Precision Hydrogen (All Colour Screen Models) - User Manual 

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Contributed by

Liam Couttie

Updated date

22 May 18

Review date

03 May 19

Title

Precision Hydrogen (All Colour Screen Models) - User Manual

Revision Number

4

Revision Details

Technical Spec Update - LC

Keywords

Precision, Hydrogen, Standard, Trace, All, Models, User, Manual, PCB

Product Range

Precision

Language

UK English

Company Brand

Peak Scientific

Public / Private

public

Reviewed on 3rd may 2017 - LC

Extracted text

Precision Hydrogen (All Colour Screen Models)
User Manual

Copyright © Peak Scientific Instruments Ltd 2018 — Precision Hydrogen (PCB) User Manual Rev 4 RSID 2322 EN —22/05/2018

Contents
Change History
4
How to use this Manual
4
Introduction 5
Health and Safety Data
6
Deioniser Resin
6
Desiccant (Applies to Precision Hydrogen only)
8
Warranties and Liabilities
10
Safety Notices
11
Symbols 11
Safety Notice to Users
11
Attention - Important Notice to All Users
12
Declaration of Conformity
13
Environmental Declaration
14
Technical Specification
15
Principle of Operation
17
General Safety
18
Generator Safety Features
19
Fittings Kit Contents
21
Unpacking Instructions
21
Transit Plug Removal
22
Installation 23
Location 23
Generator Overview
24
General Dimensions
24
Unit Controls
25
Rear Connections
25
Tubing 26
H2 Ventilation
26
Water Quality
27
Automatic Filling
27
Water Usage
30
Electrical Connection
31
Start-up Sequence
32
Liquid Leak Detectors
32
Gas Traps
32
Switching the Unit Off
33
Cleaning 33
Deioniser Column Replacement - A
34
Precision Hydrogen Trace
34
Deioniser Column Replacement - B
36
Page 2

Precision Hydrogen
Replacement of Desiccant Column
Precision Hydrogen Only
Regeneration of Desiccant
Service Requirements

36
38
38
39
40

Troubleshooting 41

Page 3

Change History
Rev

Comment

Name

Date

1

Initial Release

Liam Couttie

17/05/2016

2

Hydrogen Trace Updates

Liam Couttie

19/12/2017

3

Transit Plugs Added

Liam Couttie

22/03/2018

4

Technical Spec Update

Liam Couttie

18/05/2018

How to use this Manual
This manual is intended for end users and has been written so that it can either be read
as a step by step guide to installation and usage or as a reference document where you
can skip to the relevant information.
Users of a hard copy version can refer to the contents page to find the relevant
information. Users of the soft copy version can use the hyperlinks from the contents
page as well as the hyperlinks between sections.
Please review each of the following sections carefully.
Thank you for selecting Peak Scientific to meet your gas generation needs, and should
you require any further assistance or support please do not hesitate to contact Peak
Scientific or the Peak Partner from which you purchased your Generator.

Page 4

Introduction
The Precision Hydrogen Series has been developed to cater for the requirements of GC
instruments.
These generators, depending on model, provide a source of high purity hydrogen gas,
suitable for carrier gas and detector gas.
Other features include:
• Easy to use touch screen interface
• Status indicative lighting feature
• Stackable with other Precision units
• Purities of up to 99.9999% (6-9’s)
With the Precision Hydrogen Series based on proven technology, it produces hydrogen
by electrolysis using a Proton Exchange Membrane (PEM) cell. Moisture removal is
achieved by a desiccant drying process or by a highly efficient PSA dryer.
To ensure this generator model meets our high expectations with regards to reliability
and performance, we have tested this model extensively at our manufacturing plant and
in the field to ensure reliability and longevity of the system.

Page 5

Health and Safety Data
Deioniser Resin
This sheet to be retained by the ‘Health & Safety Officer’
The recipient of this Health & Safety Data sheet is required to ensure that all personnel
handling, using or likely to come into contact with the material are made aware of the
Health & Safety information contained herein.
General Description
Cylinder containing ion exchange resin. 60% Cation and 40% Anion by mass.
Chemical Components
Polystyrene divinylbenzene cation and ion exchange resin.
Form Solid beads
Flash Point N/A
Colour Tan
Ignition Temperature



427 °C (Estimated)

Odour None
Explosion Limits N/A
Decomposition Temperature Over 220 °C
Vapour Pressure @ 25 °C

17mm CFH @ 20 °C (Water)

Viscosity @ 25°C N/A
Solubility in Water Negligible
Specific Gravity @ 25°C
1.1-1.3
pH @ 25 °C

7-9.5 in aqueous slurry

Eye Protection

Safety Glasses (BS2092C)

Storage

Store in a cool place above 0 °C, out of direct sunlight

Fire & Explosion Hazards
Toxic combustion products may include sulphur dioxide
and sulphur trioxide
Disposal
This product can be disposed as ordinary waste if local
regulations permit
Emergency & First Aid Procedures
Spillages
Floor may be slippery. Use care to avoid falls. Wear protective glasses.
Sweep up and transfer to containers for recovery and disposal.
Extinguishing Media
Carbon Dioxide (CO2), Water Fog and Dry Powder.
Fire Fighting and Protection
Wear HSE approved, pressure demand, self-contained breathing apparatus or equivalent.
Page 6

First Aid
Skin Contact
Wash effected areas with soap and water. Consult doctor if irritation persists.
Eye Contact
Product can cause severe eye irritation. Flush eyes with large amounts of water for at
least 15 minutes. Consult a doctor if irritation persists.
Inhalation
This product should present no hazard if operated under normal conditions. If irritation
persists, move patient to fresh air.
Ingestion
If resin has been confined to the mouth, administer 250 ml. of water as a mouthwash.
Avoid swallowing. This product is considered non-hazardous if ingested in small
amounts; however, it is advisable to seek medical advice.
Toxicological Data
No toxicity data available on this product
Occupation exposure limits
STEL/TLV = None established.
Incompatible Materials (to avoid hazardous reactions)
Avoid contact with concentrated nitric acid and any other strong oxidising agents at all
times.

Page 7

Desiccant (Applies to Precision Hydrogen only)
This sheet to be retained by the ‘Health & Safety Officer’
The recipient of this Health & Safety Data sheet is required to ensure that all personnel
handling, using or likely to come into contact with the material are made aware of the
Health & Safety information contained herein.
General Description
Column containing orange to green indicating silica gel.
Chemical Components
Amorphous silica 98.2%, activated colouring agent 0.2% max.
Form Beads
Flash Point N/A
Colour Dry: yellow/orange
Saturated: Green
Ignition Temperature

>1000 °C

Odour Odourless
Explosion Limits N/A
Decomposition Temperature Over 155 °C
Vapour Pressure @ 25 °C

17mm CFH @ 20 °C (Water)

Viscosity @ 25°C N/A
Solubility in Water

less 1.0% in weight

pH @ 25 °C

2-10 at 5% w/w in water

Eye Protection

Safety Glasses (BS2092C)

Storage
All containers must be closed air tight and kept in a dry
place.
Fire & Explosion Hazards N/A
Disposal
This product can be disposed as ordinary waste if local
regulations permit.
Emergency & First Aid Procedures
Spillages
Contain spillage. Collect in suitable containers for recovery or disposal. During
collection avoid creating dust.
Extinguishing Media
N/A. Inorganic compound. Not combustible.
Fire Fighting and Protection
Wear HSE approved, pressure demand, self-contained breathing apparatus or
equivalent.

Page 8

First Aid
Skin Contact
Wash spillage from skin with soap and water.
Eye Contact
Wash immediately with copious amounts of water and obtain medical attention.
Inhalation
Remove from source of exposure.
Ingestion
Wash out mouth with water. If large amount swallowed or symptoms develop obtain
medical attention.
Toxicological Data
The lethal dose for humans for synthetic amorphous silica is estimated at over 15,000
mg/kg
Occupation exposure limits
DNEL/PNEC Incompatible Materials (to avoid hazardous reactions)
None known.

Page 9

Warranties and Liabilities
1. The Company warrants that it has title to the Goods.
2. Subject to the provisions of this clause the Company warrants that the Goods
shall comply in all material respects with any specification referred to in the Order
Confirmation (as the same may be amended) and shall, subject thereto, be free
from defects in material and workmanship for the lesser of a period of twelve
months from the date of delivery or thirteen months from the date of dispatch
from the factory.
3. Subject to the provisions of this clause the Company warrants that the Hydrogen
Cell shall comply in all material respects with any specification referred to in the
Order Confirmation (as the same may be amended) and shall, subject thereto, be
free from defects in material and workmanship for the period of three years from the
date of delivery.
4. Save as provided in this clause and except where the Goods are sold to a person
dealing as a consumer (within the meaning of the Unfair Contract Terms Act
1977) all warranties, conditions or other terms implied by statute or common
law are hereby expressly excluded save to the extent they may not be lawfully
excluded. When the Goods are sold to a consumer within the meaning of the Unfair
Contract Terms Act 1977 their statutory rights are not affected by the provisions of
this clause.
5. In the event of the Customer making a claim in respect of any defect in terms of
clause 2 hereof the Customer must.
1. Reasonably satisfy the Company that the Goods have been properly installed,
commissioned, stored, serviced and used and without prejudice to the generality
of the foregoing that any defect is not the direct or indirect result of lack of repair
and/or servicing, incorrect repair and/or servicing, use of wrong materials and/or
incorrect spare parts
2. Allow the company to inspect the Goods and/or any installation and any relevant
packaging as and when reasonably required by the Company.
6. Subject to the Company being notified of any defect as is referred to in sub-
clause 2 hereof within a reasonable time of it becoming apparent and subject always
to the terms of sub-clause 4 hereof, the Company shall, in its option, replace or
repair the defective Goods or refund a proportionate part of the Price. The Company
shall have no further liability to the Customer (save as mentioned in sub-clause 6
hereof).
7. The Company shall be liable to indemnify the Customer in respect of any claim
for death or personal injury to any person in so far as such is attributable to the
negligence or breach of duty of the Company or any failure by the Company to
comply with the provisions of sub-clause 2 hereof.
8. Save as provided in sub-clause 2 hereof the Company shall not be liable in respect
of any claim by the Customer for costs, damages, loss or expenses (whether direct,
indirect, consequential or otherwise) or indemnity in any respect howsoever arising
including, but not by way of limitation, liability arising in negligence (other than
pursuant to clause 6 above) that may be suffered by the Customer or any third
party.

Page 10

Safety Notices
Peak Scientific Instruments cannot anticipate every possible circumstance which may
represent a potential hazard. The warnings detailed within this manual refer to the most
likely potential hazards, but by definition cannot be all inclusive. If the user employs
an operating procedure, item of equipment or a method of working which is not
specifically recommended by Peak Scientific, the user must ensure that the equipment
will not be damaged or become hazardous to persons or property.

Symbols
This manual uses the following symbols to highlight specific areas important to the safe
and proper use of the Generator

WARNING

A WARNING notice denotes a hazard. It calls attention to an operating procedure,
process or similar, which if not correctly performed or adhered to, could cause
personal injury or in the worst case death. Do not proceed beyond a WARNING
notice until the indicated conditions are fully understood or met.

CAUTION

A CAUTION notice denotes a hazard. It calls attention to an operating procedure,
process or similar, which if not correctly performed or adhered to, could cause
damage to the generator or the application. Do not proceed beyond a CAUTION
notice until the indicated conditions are fully understood or met.
Caution, risk of electric shock. Ensure power to the generator has been removed
before proceeding.

Safety Notice to Users

WARNING

WARNING

These instructions must be read thoroughly and understood before
installation and operation of your Peak Precision Hydrogen Generator.
Use of the generator in a manner not specified by Peak Scientific MAY
impair the SAFETY provided by the equipment.
When handling, operating or carrying out any maintenance, personnel
must employ safe engineering practices and observe all relevant local
health and safety requirements and regulations. The attention of UK
users is drawn to the Health and Safety at Work Act 1974, and the
Institute of Electrical Engineers regulations.
If the equipment is used in a manner not specified by the manufacturer,
the protection provided by the equipment maybe impaired.

WARNING

Page 11

Attention - Important Notice to All Users

WARNING

These instructions must be read thoroughly, section by section and
understood before installation and operation of your Peak Scientific
Hydrogen Generator. Please follow the appropriate safety standards
for handling hydrogen gas and other gases as determined by the laws
and regulations of your country.

Please save the product packaging for storage or future shipment of the generator.
1. For your own personal safety and to prevent accidental damage to your generator
please ensure that you read and understand our User Manual.
2. Do not store away the generator when not in operation. External water bottles must
be made of a dark coloured glass in order to prevent biological growth (available
from Peak Scientific). It is recommended that you check the water quality weekly to
prevent biological growth developing in the tank and tubing. Failure to do this will
greatly reduce the life of the generator and render the 3 year cell warranty void.
3. Do not place the external water bottle above the height of the generator. The bottle
may be placed at the same level or below the generator.
4. Use ASTM Type I or Type II water only. (1μS/cm or better). Failure to use the correct
quality water will invalidate the cell and system warranty. Do not attempt to connect
pressurised water to the generator.
5. It is recommended that you operate the generator at the lowest pressure permissible
for your particular application. Do not automatically set the pressure to maximum if
not required to avoid potentially damaging your application.
6. Failure to maintain the deioniser cartridge as recommended will reduce the
operational life of your generator and render its 3 year cell warranty void.
7. Do not attach any additional tanks or gas cylinders to your generator without first
consulting Peak Scientific.
8. Ensure your entire installation, both pipe work and analysers, are completely gas
tight. Even minor leaks will affect the operation of your generator and generally
reduce its operational life.
9. Has your generator been correctly sized for your application? If in doubt, consult
your dealer or Peak Scientific.
10. Ensure the ambient temperature inside your laboratory does not rise above
35°C/95°F. Extremes of operating temperature will reduce cell life.

Page 12

Declaration of Conformity
We

Peak Scientific Instruments Ltd.

Of

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Declare that:
Equipment: Hydrogen Generator


Models:



Precision Hydrogen (100cc, 200cc, 300cc & 450cc)
Precision Hydrogen Trace (250cc & 500cc)


To which this declaration relates, is in conformity with the applicable EC directives,
harmonized standards, and other normative requirements.
• Low Voltage Directive 2014/35/EU
EN 61010-1: 2010 Electrical Equipment for measurement, control and laboratory use.
• Electromagnetic Compatibility Directive 2014/30/EU
EN 61326-1: 2013 Electrical Equipment for measurement, control and laboratory use.
• FCC47 CFR Part 15 Class B
Unintentional radiators; Conducted and Radiated emissions limits.
All evaluation, testing and certification issued by:


CSA Group



Unit 6, Hawarden Industrial Park,

Hawarden, Deeside, UK


CH5 3US

Signed: Name: Chris Pugh
Date:

Page 13

19/12/2017

Position:

Chief Technology Officer

Environmental Declaration
We

Peak Scientific Instruments Ltd.

Of

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Declare that:
Equipment: Hydrogen Generator


Models:



Precision Hydrogen (100cc, 200cc, 300cc & 450cc)
Precision Hydrogen Trace (250cc & 500cc)

Is fully compliant with the following Directives
• 2012/19/EU

WEEE (Waste of Electrical and Electronic Equipment)

• 2011/65/EU

RoHS 2 (Restriction of Hazardous Substance)

Peak Scientific Instruments Ltd fully complies with its obligations towards the European
WEEE (Waste of Electrical and Electronic Equipment) Directive 2012/19/EU. These
obligations are being met within the B2B compliance group.
Peak Scientific Instruments Ltd has developed all reasonable ‘due diligence’ controls to
ensure that our products comply with the principles and requirements of the European
recast RoHS (Restriction of Hazardous Substances) Directive 2011/65/EU. Similar
directives in the United States and China, for example, have also been captured within
this program.
Where a specific certificate of compliance is required, this can be requested, on
a product serial number basis, directly from Peak Scientific Instruments Ltd, by
contacting us through our website on www.peakscientific.com
Signed: Name: Chris Pugh
Date:

Page 14

10/06/2015

Position:

Chief Technology Officer

Technical Specification
Precision Hydrogen Trace
Environment
250cc

Minimum Operating Ambient Temperature
Maximum Operating Ambient Temperature
Maximum Altitude
Maximum Relative Humidity
Minimum Storage Temperature*
Maximum Storage Temperature*

500cc

10°C (50°F)
35°C (95°F)
2000 m
90% Non-Condensing
10°C (50°F)
25°C (77°F)

Generator Outlets
Max Flow Rate
Purity
Gas outlet
Delivery pressure

250 cc/min

500 cc/min

99.9999%
1 x 1/8” Swagelok compression fitting
0-100 psi (0-6.9 bar)

Electrical Requirements
Voltage
Frequency
Current
Input Connection
Power Cord (Supplied)
Pollution Degree
Insulation Category

100-230VAC
50/60 Hz
6A Max.
C14 Connection
C13 socket to local connection (10A minimum)
2
II

General
Generator Dimensions cm
Generator Weight
Shipping Crate Dimensions cm
Shipping Weight
Noise Level @ 1 m
Heat Output
Water Purity Requirement

38.0 (14.9”) x 54.0 (21.2”) x 40.6 (15.9”)
32 kg
54.0 (21.2”) x 70.0 (27.5”) x 49.0 (19.2”)
40 kg
20 dB
1000 BTU / Hr
ASTM Type II ( 1Mohm)

* When taken out of storage the Generator should be allowed to acclimatize at room
temperature for a minimum of 3 hours before operation.

Page 15

Technical Specification
Precision Hydrogen
Environment
100cc

Minimum Operating Ambient Temperature
Maximum Operating Ambient Temperature
Maximum Altitude
Maximum Relative Humidity
Minimum Storage Temperature*
Maximum Storage Temperature*

200cc

300cc

450cc

10°C (50°F)
35°C (95°F)
2000 m
90% Non-Condensing
10°C (50°F)
25°C (77°F)

Generator Outlets
Max Flow Rate
Purity
Gas outlet
Delivery pressure

100 cc/min 200 cc/min 300 cc/min 450 cc/min
99.9995%
1 x 1/8” Swagelok compression fitting
0-100 psi (0-6.9 bar)

Electrical Requirements
Voltage
Frequency
Current
Input Connection
Power Cord (Supplied)
Pollution Degree
Insulation Category

100-230VAC
50/60 Hz
6A Max.
C14 Connection
C13 socket to local connection (10A minimum)
2
II

General
Generator Dimensions cm
Generator Weight
Shipping Crate Dimensions cm
Shipping Weight
Noise Level @ 1 m
Heat Output
Water Purity Requirement

38.0 (14.9”) x 54.0 (21.2”) x 40.6 (15.9”)
31 kg (68 lbs)
54.0 (21.2”) x 70.0 (27.5”) x 49.0 (19.2”)
39 kg (86 lbs)
20 dB
1000 BTU / Hr
ASTM Type II ( 1Mohm)

* When taken out of storage the Generator should be allowed to acclimatize at room
temperature for a minimum of 3 hours before operation.

Page 16

Principle of Operation
The Peak Scientific hydrogen generator produces high purity hydrogen gas, H2.
Hydrogen does not occur naturally on earth and must be formed via the decomposition
of other molecules, in this case via the splitting of water molecules into hydrogen and
oxygen in a process known as electrolysis.
The electrolyser used in the Peak Scientific hydrogen generator is known as a Proton
Exchange Membrane (PEM) electrolyser. This type of electrolyser was first described
in the mid-1960’s by General Electric as a method for producing oxygen for the Gemini
space program. PEM electrolysis has been continually developed since its introduction
and has remained the state-of-the-art technology for water electrolysis and the
production of high purity hydrogen ever since.
The most important element of the generator is the electrolyser cell where the
electrolysis reaction takes place. This consists of two electrodes (an anode and a
cathode), which are separated by the proton exchange membrane which gives the
technology its name. During operation deionised water is fed to the anode of the
electrolysis cell where it is split into oxygen, protons and electrons with the aid of a
precious metal catalyst. The oxygen is vented to atmosphere from the generator. The
protons travel across the membrane and simultaneously the electrons travel around
the external electrical circuit. These protons and electrons then recombine at the
cathode of the electrolyser, again with the aid of a precious metal catalyst to produce
the hydrogen gas. The high purity of the hydrogen is assured by the membrane which
completely separates the hydrogen produced at the cathode from the oxygen being
produced at the anode. These processes are described by the following equations:
Anode Reaction
H2O(l) ½O2(g) + 2H+(aq) + 2eCathode Reaction
2H+(aq) + 2e- H2(g)
Deionised water is critical to the operation of the system and must have a purity of
1μS/cm or better to prevent damage to the membrane. Failure to use this grade of
deionised water will invalidate the 3 year cell warranty of your generator. The water is
automatically loaded (either at power up or periodically during operation) and the rate
at which the water is consumed depends on the amount of hydrogen being produced.
A small amount of the electrical energy input is lost as heat and this is removed from
the generator by the ventilation system.
The Peak Scientific hydrogen generator generates hydrogen on demand. By
maintaining the user’s pre-set pressure and using this as a reference value, the
generator will produce the precise amount of hydrogen required. As soon as the
demand ceases, no further hydrogen will be sent to the user’s application. During this
time bubbles may still be observed in the separating tank. This is due to the generator
maintaining its internal pressure and ensuring that clean, dry hydrogen is available
immediately on demand when the user requires it.

Page 17

General Safety
The generator produces gas when the application places a demand on the unit. The
maximum quantity of hydrogen stored in the generator at any one time is 300cc for
Precision Hydrogen and 350cc for Precision Hydrogen Trace, at a pressure of 6.9bar
(100psi). The unit also meets the European Electromagnetic Compatibility and Low
Voltage Directives. The Generator is CE approved and has the CE mark attached.
The Precision Hydrogen range has been tested according to EN60079-2 as part of Peak
Scientific’s risk assessment evidence provided as part of the CSA Accreditation process.
This means that the Hydrogen Generator can be safely installed in your laboratory and
does not classify the surrounding area as dangerous.
All of the Precision Hydrogen Series generators have the necessary control circuitry,
both electrical and mechanical, to ensure the shutdown of the instrument in the event
of a fault or faults occurring.

Page 18

Generator Safety Features
The Precision Hydrogen range have the following safety features to ensure safe and
reliable operation:
• Overpressure sensor.
• Safe and accurate control of pressure.
• Capacity excess for leak detection.
• Cell shut down in critical alarm status.

Page 19

Unpacking
Although Peak Scientific takes every precaution with safe transit and packaging, it is
advisable to fully inspect the unit for any sign of transit damage.
Check ‘SHOCKWATCH’ and ‘TIP-N-TELL’ labels for signs of rough handling prior to
unpacking.

Any damage should be reported immediately to the carrier and Peak Scientific or the
Peak Partner from where the unit was purchased.
Follow the unpacking instructions posted on the side of the crate. It will require two
people to remove the unit from the shipping crate and to manoeuvre the generator
onto the bench.
Please save the product packaging for storage or future shipment of the generator.
Note: Included with the Generator is a “Fittings Kit” containing mains power leads for
UK, EU & US and also all the required fittings and warranty registration card. Be careful
not to discard these with the packaging. 

Page 20

Fittings Kit Contents
Supplied in the Fittings Kit are all the fittings required to connect the generator to the
application. The contents of the Fittings Kit are as follows:
1. Tygon Tubing x 1m
2. Deioniser Column Resin Refill

x1

3. Barbed Hose Fitting x 1
4. UK Mains Power Cable x 1
5. EU Mains Power Cable x 1
6. US Mains Power Cable 110V

x1

7. US Mains Power Cable 230V

x1

8. Installation Guide– Precision Hydrogen

x 1

9. 4 Litre Water Bottle** x 1
10. Transit Plugs x 2
*Optional Extra, Includes additional Barbed Hose Fitting
All of the generator output ports are located on the output panel at the rear of the
generator.

Unpacking Instructions
The generator weight constitutes a two person lift and as such, safe lifting practices
should be employed; do not attempt to lift on your own, as you will significantly
increase the chance of injury & damage to yourself and others around you.
1. Cut the plastic strapping and remove the cardboard lid, protective foam packaging
and cardboard sleeve. Finally remove the plastic covering the generator.
2. Next, with someone on either side of the unit, position your hands underneath the
unit ready to lift.
3. Ensuring your knees are bent and your back is straight, lift the unit to the desired
location.

Page 21

Transit Plug Removal
All hydrogen generators should be fitted with two Transit Plugs 3301437 during the
packaging process. These plugs are fitted to the H2 vent and O2 vent of all hydrogen
units and ensure no water from the internal water bottle can escape during transit.
Plugs should be removed during the installation of the generator.
These plugs require very little force to remove and will self-remove if left in the vents

3301437

Page 22

Installation
Location
The generator should be located on a flat, level surface for operation - this will ensure
that the water level sensors within the unit operate correctly. Some components in the
generator produce heat during operation and therefore an adequate airflow must be
maintained around the generator to allow the ventilation system to perform efficiently.
If the generator is stored in an enclosed space the environment must be controlled via
an air conditioner or extraction fan. The provision must be made to allow the volume
of air in the room to be changed 5 times per hour. The risk with hydrogen is a leak into
the environment raising the hydrogen content to the explosive limit. The rear of the
generator will become warm to the touch during operation - a minimum clearance of 15
cm (6”) from other bodies is recommended.
Do not obstruct or connect the vents to any application. Failing to observe this could
lead to permanent damage of the generator.
Do not expose the unit to freezing conditions. Please adhere to the operating
temperatures below:
Do not position the equipment so that it is difficult to disconnect the mains plug.
Minimum Operating Ambient Temperature:

10 °C (50 °F)

Maximum Operating Ambient Temperature:

35 °C (95 °F)

Note: It is recommended that any Precision Trace unit is left to run for 24 hours
before utilisation.

Page 23

Generator Overview
General Dimensions
380 mm / 14.9”

406mm / 15.9”

540 mm / 21.2”

WARNING

Page 24

The Generator must always be placed on a flat, level surface. Failure to
do so will affect the performance of the Generator.

Unit Controls

Touch Screen

Rear Connections

Hydrogen

Page 25

O2 Vent
H2 Vent

Master Connection
Slave Connection
Power Inlet
Power Switch
H2 Detector Connection
Water Supply Fill
H2 Exhaust
Drain
H2 Delivery

Hydrogen Trace

Tubing
For the hydrogen supply line, it is recommended that only clean grade copper or
stainless steel tubing should be used.
Plastic tubing material such as Teflon®, polyvinyl chloride, or Tygon® should not be used
when plumbing GCs since these materials will allow air and water to diffuse into the gas
lines. In addition, plastic tubing can give off organic impurities which can cause ghost
peaks and baseline instability.
Furthermore Peak Scientific recommend that compression fittings are used, and that
the fittings are free from Teflon® tape.

H2 Ventilation
Peak Scientific recommends that both the H2 Exhaust and H2 Vent ports at the rear of
the unit should be connected to an exhaust hood, or other ventilation system, to ensure
safe disposal of vented gasses. Tubing sizes for the vent ports are 6mm OD for the H2
Exhaust and 6mm OD for the H2 Vent.

Page 26

Water Quality
Use only High Grade Deionised water, which must have a conductivity of less than or
equal to 1μS/cm @ 20°C and should be replaced as required. Water quality should be
checked prior to being used to supply the Precision Hydrogen (Trace) Generator.
Use of water in the Precision Hydrogen (Trace) Generator with a purity not specified
above will result in a reduced efficiency of hydrogen production, failure of the generator
and loss of warranty.
Water should be stored in a UV protected dark container away from direct sunlight. The
bottle should have a vented lid to minimise any dust or debris contaminating the water
supply. A suitable external water bottle is available from Peak Scientific.
Note: Customers should check the water quality of the external water supply once a
week to maintain the health of the generator.

Automatic Filling
The Precision Hydrogen generator uses an automatic water filling system, whereby
sensors in the unit’s internal water tank detect when the water level reaches a minimum.
This then refills the tank using a rear connection to an external DI water supply.
The unit should be connected to the water supply as shown on the next page.
Using the length of FEP tubing and the hose barb fitting from the fittings kit, attach the
barb to the tubing. Then connect one end to the water supply and the other to the Fill
port at the rear of the Precision Hydrogen.
For efficient water filling the external supply should be no more than 2 metres away
from the connection on the generator.
The DI Water Supply source MUST NOT be located higher than
the height of the surface that the Precision Hydrogen generator is
placed upon. A supply located higher than specified will result in the
generator’s internal water bottle over filling.
WARNING

A pressurized DI Water Supply Source will also result in the internal
water bottle over filling, and also MUST NOT be used.
WARNING

Page 27

/
×

×

If the generator cannot load enough water to switch the sensors in the water bottle the
generator will alarm providing the user with the screen below.

Water Level Fault

Unable to load water!
Please check the water supply.
Confirm
Start

Mute
Menu

The external water supply should be checked prior to pushing the Confirm button
which will then re-engage the load pump and will allow the generator to continue to fill
with water. If the generator again fails to load water the below screen will be displayed.

Water Level Fault

A problem with the water
sensors has been detected.
Start

Page 28

Menu

When the system detects a low water level it starts a 3 hour timer, should the system
not receive enough water to switch the low level sensor it will then stop the generator
from producing hydrogen. This happens to prevent damage to the hydrogen cell and
ensure that your Precision Hydrogen Generator remains in its optimum operating
condition.
If the generator has reached this point the screen below will be shown on the Human
Machine Interface (HMI).

Water Level Fault

There is no water in the generator.
The generator has been shut down to
prevent damage to the cell.
Start

Menu

To resolve this, check your external supply before cycling the power on the generator.
Once the low level water sensor disengages the generator will then begin producing
hydrogen as before.
Four and eight litre water storage bottles can be purchased from Peak Scientific, please
contact your Sales Representative for more information.

Page 29

Water Usage
The water consumption rate of the Precision Hydrogen Generator is completely
dependent on the rate at which the hydrogen is produced.
The graphs below show an estimation of the water consumption from the generator in
Stand-by mode through to maximum Hydrogen output.

Water Consumpu�on:
Precision Hydrogen Standard
0.05

Water Consump�on (L/h)

0.04

0.03

0.02

0.01

0

Stand-by

100cc

200cc

300cc

450cc

Output Flowrate (/min)

Water Consumpu�on:
Precision Hydrogen Trace
0.05

Water Consump�on (L/h)

0.04

0.03

0.02

0.01

0

Stand-by

100cc

200cc

300cc

Output Flowrate (/min)

Page 30

400cc

500cc

Electrical Connection
Connect the generator into an appropriate electricity supply, between 100-230VAC.
Refer to the generator serial plate for input specification and ensure your supply
matches the requirements.
If the appropriate power cord is not supplied; a new CSA, UL approved power cord,
rated to at least 10 amps, can be fitted by a qualified electrician.

WARNING

This unit is classified as SAFETY CLASS 1. THIS UNIT MUST BE
EARTHED. Before connecting the unit to the mains supply, please
check the information on the serial plate. The mains supply must be of
the stated AC voltage and frequency.

EARTH/GROUND (E):-

Green & Yellow or

Green

LIVE (L):-

Brown

or

Black

Neutral (N):-

Blue

or

White

Page 31



Start-up Sequence
CHECK:
1. H2 Outlet is connected to application
2.

Mains power is connected

Turn the power switch ON. The digital display will light up, the cooling fan will rotate.
On power up the generator will check the water level, once the water level is at the
minimum level required the generator will perform a diagnostic check including a leak
test, this should take approximately six minutes.
Upon successful completion of the leak test, the operator is presented with the main
screen and the generator is ready to deliver hydrogen.
The main screen has two options available, Start and Menu. The first time the unit is
switched on the user should select the Menu option which allows the desired unit of
measure and delivery pressure to be selected.
Also displayed on the Menu screen are the Shutdown and Back buttons. Shutdown will
depressurize the generator. This should be selected before turning the unit off using
the Power switch at the rear of the unit. The Back button returns the user to the home
screen where the Start option will allow the flow of hydrogen to the application.
If the unit has been used previously the Start button will initiate the supply of hydrogen
to the application at the last used pressure.
Note: If leak test is unsuccessful, and alarm will sound and a Yellow failure screen will be
displayed complete with a mute button. The user is prompted at this point to contact
their Peak service provider.

Liquid Leak Detectors
Liquid leak detectors should not be used on the Precision Hydrogen. These solutions
are easily drawn into the high purity hydrogen gas system and can cause irreparable
damage to a GC column. If a liquid solution has to be used, then it should be IPA based,
or a portable hydrogen detector should be used.

Gas Traps
It is recommended that moisture, oxygen and hydrocarbon traps are used on the
gas supply line between the Peak generator and the instrument to provide back-up
contaminant protection for your instrument.
The hydrogen gas produced by the Precision Hydrogen will be sufficiently pure for
these contaminant traps to last a long time, but should a leak ever occur on the gas
line, the traps will ensure that any harmful contaminants are caught, thereby preventing
potential damage to the instrument.

Page 32

Switching the Unit Off
The unit can be switched off at any time using the following procedure.
Press the Stop button on the Home screen, then press Menu and select Shut Down.
The unit will take a few moments to depressurize after which the power switch at the
rear of the generator can be switched off.

Cleaning
Clean the outside of the Generator, with the exception of the HMI screen, using only
warm soapy water and a clean damp cloth. Ensure the cloth is thoroughly rung out to
remove excess fluid prior to use.
Cleaning should only be undertaken with the power switched off and
the power cord removed from the rear of the Generator.

CAUTION

Under no circumstances should any solvents or abrasive cleaning
solutions be used as these can contain fumes that could be harmful to
the Generator.

To clean the HMI Screen, moisten a cloth with either isopropyl or ethyl alcohol.

CAUTION

Page 33

Do not use water, ketone or aromatic solvent to clean the HMI Screen.
Ensure that saliva or water drops are wiped off immediately and avoid
contacting with oil or fats.

Deioniser Column Replacement - A
Precision Hydrogen Trace
The deioniser column maintains the water quality of the water as it is circulated through
the system and to ensure the optimum health of the generator, the resin in the deioniser
column should be replaced every 6 months.
Listed below are the instructions for replacing the deioniser column. The user will be
prompted to do this by the HMI screen displaying ‘Change DI Column’. However in the
event of a change being required out with the 6 month schedule, this screen can also
be accessed manually.
1. From the main screen pressing MENU will bring up the system screen, the NEXT
option should now be selected. If this is a scheduled change, the screen will already
display CHANGE D.I. COLUMN.

System
Display units in
Set pressure

System State: Standby
Pressure:

Target

Current
26.39

psi

25

Units

25.00

psi

Start

Menu

Save

Shutdown

Back

Home

Next

2. The user should now select CHANGE, the next screen shown will ask the user to
confirm this by pressing CONTINUE.

Column

Column

Change DI Column?
Change DI column?

Change DI column?

ChangeChange
DI Column?

Change

Later

Back

Home

Next

Start
Back

Continue

Home

Menu
Next

3. Remove the Fascia by first pulling it forwards and then sliding it up, ensuring that
the HMI screen is disconnected from the unit.

Page 34

4. The deioniser column is held in place by two Velcro straps, these must be
unfastened.
5. Next disconnect the deioniser column by pressing the silver tabs on the fittings at
the top and bottom of the column.

6. Remove the used column by pulling it towards you.
7. Fit a new deioniser column (05-7062) into the generator and reconnect the tubing

05-7062

8. Refasten the velcro straps and re-attach the front fascia, making sure to connect the
HMI screen to the unit again.
9. Finally, the HMI screen will display D.I. COLUMN CHANGED? The CONFIRM button
should now be selected, to resume normal operation.

Column
DI Changed?

Change DI column?
Change
DI Column Changed?

Confirm
Start
Back

Page 35

Home

Menu
Next

Deioniser Column Replacement - B
Precision Hydrogen
The deioniser column maintains the water quality of the water as it is circulated through
the system and to ensure the optimum health of the generator, the resin in the deioniser
column should be replaced every 6 months.
Listed below are the instructions for replacing the deioniser column. The user will be
prompted to do this by the HMI screen displaying ‘Change DI Column’. However in the
event of a change being required out with the 6 month schedule, this screen can also
be accessed manually.
1. From the main screen pressing MENU will bring up the system screen, the NEXT
option should now be selected. If this is a scheduled change, the screen will already
display CHANGE D.I. COLUMN.

System
Display units in
Set pressure

System State: Standby
Pressure:

Target

Current
26.39

psi

25

Units

25.00

psi

Start

Menu

Save

Shutdown

Back

Home

Next

2. The user should now select CHANGE, the next screen shown will ask the user to
confirm this by pressing CONTINUE.

Column

Column

Change DI Column?
Change DI column?

Change DI column?
Change

ChangeChange
DI Column?

Change Gel column?

Later

Change
Back

Home

Next

Start
Back

Continue

Home

Menu
Next

3. Remove the fascia by first pulling it forwards and then sliding it up, ensuring that the
HMI screen is disconnected from the unit.

Page 36

4. The deioniser column is held in place by two Velcro straps, these must be
unfastened.
5. Next disconnect the deioniser column by pressing the silver tabs on the fittings at
the top and bottom of the column.

6. Remove the used column by pulling it towards you.
7. Fit a new deioniser column (05-7062) into the generator and reconnect the tubing

05-7062

8. Refasten the velcro straps and re-attach the front fascia, making sure to connect the
HMI screen to the unit again.
9. Finally, the HMI screen will display D.I. COLUMN CHANGED? The CONFIRM button
should now be selected, to resume normal operation.

Column
DI Changed?

Change DI column?
Change
DI Column Changed?

Confirm
Start
Back

Page 37

Home

Menu
Next

Replacement of Desiccant Column
Precision Hydrogen Only
The silica gel in the desiccant column must be removed and either regenerated or
replaced once it becomes saturated.
The silica gel can be regenerated by tipping the gel into a suitable container and placed
into an oven in accordance with the guidelines on page 39.
The HMI screen prompts the user to do this.
Instructions are listed below on how to do this.
1. From the previously used column screen select CHANGE below change gel column.
Next press CONTINUE. The screen will then warn the user that the system will
depressurise, press CONTINUE

Column

Column

Column

Warning!

Change Gel Column?
Change DI column?

Change DI column?
Change
Change Gel column?

Later

Change
Back

Home

Next

Start
Back

Continue

Continue

Home

Menu
Next

Change DI column?

SYSTEM WILL
Change
DEPRESSURISE

Change Change
Gel Column?

Start
Back

Home

Menu
Next

2. Now that the unit is depressurised, remove the front fascia and disconnect the
tubing connected to the desiccant column. Next unscrew the column by turning to
the left, this should be hand tight.

3. Remove the column from the generator and unscrew the cap. The gel inside should
now be removed and replaced with new OR regenerated gel.

Page 38

4. The column should now be reassembled, and then screwed back into the generator,
again this must only be hand tight.
5. Next reconnect the tubing to the push fit fitting on the cap of the column.
6. Now replace the fascia of the hydrogen generator.
7. Finally press CONFIRM on the HMI screen which will display a GEL COLUMN
CHANGED? screen. This will bring the generator back up to pressure.
Column
Gel Changed?

Change DI column?
Change
Gel Column Changed?

Confirm
Start
Back

Home

Menu
Next

Regeneration of Desiccant
When reactivating the desiccant it is vital that the activity indicator is not used to
control the process.
1. As a general rule saturated desiccant will require a minimum of 4-6 hours at a
temperature of between 105-110°C throughout the entire desiccant bed for the
reactivation process to be effective and reduce the adsorbed moisture to less than
2% by weight.
2. Reactivation should be carried out in a ventilated electric oven. A sealed oven
will limit the moisture liberated and prevent efficient reactivation. Gas ovens and
microwave cookers are also not suitable for reactivation.
3. Devices that pass warm air through the desiccant bed changing the activity
indicator to blue should be avoided.
4. Ideally after reactivation the desiccant must be placed in a sealed container and
allowed to cool. The reactivated desiccant should not be stored in a warm oven
at 60°C as this will cause partial saturation of the desiccant although the activity
indicator will remain stable.
5. To validate the reactivation efficiency a fundamental weight loss test conducted
before and after processing will provide the amount of moisture loss data.
6. A supply of pre-heated air is an integral requirement for an efficient reactivation
process. For saturated desiccant a minimum air flow of between 5-10 cubic feet per
minute.

Page 39

Service Requirements
Service Schedule
Purchase Interval

Component

Visit

Precision Hydrogen Trace Annual Service Kit
12 Months

www.peakscientific.com/ordering
Precision Hydrogen Annual Service Kit

Service Plans
Peak Scientific offer two service plans. The Complete Service Plan, specifically designed
for generators operated in critical environments, also includes full breakdown cover,
guaranteed response times and generator upgrades if available. Our Standard Service
Plan, covering the basic needs of our generators, features special deals on spare parts
and breakdowns.
If you want to know more about our Service Plan options and how we ensure that your
instrument can run with the maximum uptime and performance, please contact us at
maintenance@peakscientific.com

Page 40

Troubleshooting
Problem

The generator will not switch on and the
power switch does not illuminate

Possible Solution
• Ensure power cord is plugged into the
Generator and that the power socket is
turned on.
• Check the fuse in the power cord
plug, if fitted.
• Contact your service provider.

Diagnostics Failed Alarm

• Contact your service provider.

Over Pressure Alarm

• Contact your service provider.
• Check demand flow, ensure that it does
not exceed maximum capacity of the
generator.

Capacity Excess Alarm

• Check external pipework for leaks.
• Restart generator to run self test and
check for internal leaks.
• Contact your service provider.

Water Level Fault

• Contact your service provider.

Low Water Supply Alarm

• Check Water Supply level, and fill if
necessary.
• Contact your service provider.

Hydrogen Detected*

• Check for external leaks.

The generator is not producing hydrogen

• Check the Customer Set Pressure is at
least 1 PSI or greater.
• Contact your service provider.

The generator is not producing the required
amount of hydrogen at the set pressure.

• Check the water quality of the external
supply.
• Contact your service provider.
• Check for external leaks.

* If Hydrogen Detector is fitted.

Page 41

Go Online or Complete and Return
You can register for your FREE 12 month Warranty with ease online at
www.peakscientific.com/protected.
Alternatively, you can send the completed form to Peak Scientific by post or
email at warranty@peakscientific.com.

Go Online or Complete and Return
You can register for your FREE 12 month Warranty with ease online at
www.peakscientific/protected.
Alternatively, you can send the completed form to Peak Scientific by post or
email at warranty@peakscientific.com.

Product Warranty Registration
Contact name
Email address
Company
Address
City/town
Postcode
Country
Telephone
Generator serial #
Model type
Installation date
Do you still use an
alternative gas solution i.e.
cylinders or bulk liquid?

Yes

What gas requirements do
you have in your lab?

Hydrogen

No

Nitrogen

Zero Air

Extend your cover with
Peak Scientific offer comprehensive gas generator after sales support packages.
Peak [Protected] aftercare support can guarantee an on-site response within
72 hours*, genuine parts from our ISO9001 approved factory and a 95% first-time
fix rate. See our enclosed Peak [Protected] leaflet for further information.
Important!
You have 1 month to register your Peak Scientific product from the date of installation. Once registered
the warranty will be honoured for a period of 12 months. If you wish to defer the installation of your
generator, you must notify Peak Scientific immediately by emailing warranty@peakscientific.com.
For generators that remain unregistered after 1 month from the shipment date, the warranty will be
considered active from the date of factory dispatch.
* Complete Plan only






Important!
You have 1 month to register your Peak Scientific product from the date of
installation. Once registered the warranty will be honoured for a period of 12
months. If you wish to defer the installation of your generator, you must notify
Peak Scientific immediately by emailing warranty@peakscientific.com. For
generators that remain unregistered after 1 month from the shipment date, the
warranty will be considered active from the date of factory dispatch.

Page 42

Page 43

Peak Scientific has highly trained, fully certified Field Service Engineers located in over 20 countries
across every continent around the world. This allows us to provide an industry-leading rapid response
service to our customers. With [Peak Protected], your laboratory’s productivity becomes our top
priority.
To discuss Peak Protected generator cover and payment options speak to your local Peak
Representative or for further information contact: protected@peakscientific.com

Peak Scientific
Fountain Crescent
Inchinnan Business Park
Inchinnan
PA4 9RE
Scotland, UK
Tel: +44 141 812 8100
Fax: +44 141 812 8200
For further information on any of our
generator products please contact
marketing@peakscientific.com
Precision Hydrogen (PCB) User Manual Rev 4 RSID 2322 EN 22/05/18

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