Precision Hydrogen 1200cc - User Manual 

Resource downloads

File information File dimensions File size Options

Original PDF File

1.5 MB Download


566 × 800 pixels (0.45 MP)

4.8 cm × 6.8 cm @ 300 PPI

38 KB Download


Full screen preview

38 KB View
Resource details

Resource ID




Contributed by

Liam Couttie

Updated date

24 September 18

Review date

24 September 20


Precision Hydrogen 1200cc - User Manual

Revision Number


Revision Details

Trace Model Information Added - LC


Precision, Hydrogen, 1200cc, User, Manual, Guide

Product Range



UK English

Company Brand

Peak Scientific

Public / Private


Extracted text

Precision Hydrogen 1200cc (All Models)
User Manual

Copyright © Peak Scientific Instruments Ltd 2018 — Precision Hydrogen 1200cc User Manual Rev 4 RSID 2379 EN —24/09/2018

Change History
How to use this Manual
Introduction 4
Health and Safety Data
Deioniser Resin
Warranties and Liabilities
Safety Notices
Symbols 8
Safety Notice to Users
Attention - Important Notice to All Users
Declaration of Conformity
Environmental Declaration
Technical Specification
Principle of Operation
General Safety
Generator Safety Features
Unpacking 16
Fittings Kit Contents
Unpacking Instructions
Transit Plug Removal
Installation 19
Location 19
Generator Overview
General Dimensions
Unit Controls
Rear Connections
Tubing 22
H2 Ventilation
Water Quality
Automatic Filling
Water Usage
Electrical Connection
Start-up Sequence
Liquid Leak Detectors
Gas Traps
H2 Detector Option
Expanding Capacity
Rear Connections
Switching the Unit Off
Cleaning 31
Deioniser Column Replacement
Service Requirements
Troubleshooting 35

Page 2

Change History





Initial Release

Liam Couttie



Transit Plugs Added

Liam Couttie



Trace Model Information Added

Liam Couttie



Cell Warranty Update

Liam Couttie


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 can refer to the contents page to find the relevant information.
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 Peak Partner from which you purchased your Generator.

Page 3

The Precision Hydrogen 1200cc has been developed to cater for the requirements of
GC instruments.
This generator provides a source of high purity hydrogen gas, suitable for carrier gas if
used in conjunction with carrier gas traps 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 99.9995% (Standard) and 99.9999% (Trace).
The Precision Hydrogen 1200cc is based on proven technology, it produces hydrogen
by electrolysis using a Proton Exchange Membrane (PEM) cell. Moisture removal is
achieved by a maintenance free Pressure Swing Adsorption (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 4

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
Bag 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)


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
This product can be disposed as ordinary waste if local
regulations permit
Emergency & First Aid Procedures
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 5

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.
This product should present no hazard if operated under normal conditions. If irritation
persists, move patient to fresh air.
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

Page 6

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
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

Page 7

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.

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


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.


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



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.


Page 8

Attention - Important Notice to All Users


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 material 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 only high grade de-ionised water (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. Failure to maintain the Deioniser Cartridge as recommended will reduce the
operational life of your generator and render its 3 year cell warranty void.
6. Do not attach any additional tanks or gas cylinders to your generator without first
consulting Peak Scientific.
7. 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.
8. Has your generator been correctly sized for your application? If in doubt, consult
your dealer or Peak Scientific.
9. Ensure the ambient temperature inside your laboratory does not rise above
35°C/95°F. Extremes of operating temperature will reduce cell life.

Page 9

Declaration of Conformity

Peak Scientific Instruments Ltd.


Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Declare that:
Equipment: Hydrogen Generator


Precision Hydrogen 1200cc (All Models)

To which this declaration relates, is in conformity with the applicable EC directives,
harmonized standards, and other normative requirements.
• Low Voltage Directive 2006/95/EC
EN 61010-1: 2010 Electrical Equipment for measurement, control and laboratory use.
• Electromagnetic Compatibility Directive 2004/108/EC
EN 61326-1: 2013 Electrical Equipment for measurement, control and laboratory use.
All evaluation, testing and certification issued by:

York EMC Services Ltd

Unit 1, Grangemouth Technology Park,

Earls Road, Grangemouth


Signed: Name: Chris Pugh

Page 10



Chief Technology Officer

Environmental Declaration

Peak Scientific Instruments Ltd.


Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Declare that:
Equipment: Hydrogen Generator


Precision Hydrogen 1200cc (All Models)

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
Signed: Name: Chris Pugh

Page 11



Chief Technology Officer

Technical Specification
Precision Hydrogen

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

1200cc Trace

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
Gas outlet
Delivery pressure

1200 cc/min
1 x 1/8” Swagelok compression fitting
0-100 psi (0-6.9 bar)

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

50/60 Hz
10A Max
C14 Connection
C13 socket to local connection (10A minimum)

Generator Dimensions cm (W x D x H)
Generator Weight
Shipping Crate Dimensions cm (W x D x H)
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”)
31.5Kg (69.5 lbs)
54.0 (21.2”) x 70.0 (27.5”) x 49.0 (19.2”)
38 kg (83.8 lbs)
20 dB
1000 BTU / Hr
1 Mohm-cm

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

Page 12

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 state of the art in water electrolysis is the Proton Exchange Membrane (PEM)
electrolyser. This technology was first described in the mid-1960s by General Electric as
a method for producing electricity for the Gemini Space Program and later adapted for
electrolysis. This process has been continually developed ever since. All Peak Scientific
hydrogen generators utilise PEM technology .
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:

Cathode 2H+(aq) + 2e- = H2(g)

Anode H2O(l) = ½O2(g) + 2H+(aq) + 2e-

Deionised water is critical to the operation of the system and must have a purity of
1 µS/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 the 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 is lost as heat and this is removed from the
generator by the ventilation system.
The Peak Scientific hydrogen generator produces 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 13

General Safety
The generator only 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 350cc
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.
All of the Precision Hydrogen 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 14

Generator Safety Features
The Precision Hydrogen range have the following safety features to ensure safe and
reliable operation:
1. To avoid any build up of hydrogen from leaks inside the unit; the generator features
forced air ventilation. This ensures that a hydrogen / oxygen mixture cannot form
inside the generator.
2. On power-up the generator self checks for internal leaks and if required it will
shutdown at the end of the System Check informing the operator with a visual and
audible alarm.
3. The generator will detect any hydrogen leaks that occur within the generator, the
user’s application and gas lines. In the event of a major leak the generator will
automatically shut down within 20 minutes.
4. The hydrogen pressure inside the generator should only reach a maximum of 7.5 bar
(110psi) and this is controlled in two ways:
a. Gas pressure is monitored and controlled electronically by a pressure sensor
b. A mechanical pressure switch (Fail Safe) will electrically isolate the hydrogen cell
should the internal pressure reach 9 bar (130psi).
5. When the generator is in alarm status the following occurs:
a. The current to the cell is stopped so no hydrogen is generated therefore
preventing a hazardous situation.
b. The over pressure relief valve opens allowing the unit to depressurise.
c. An audible alarm sounds and a visual alarm, relevant to the fault condition, is
displayed. The generator can sense for internal and external leaks, excessive gas
demand and lack of water.

Page 15

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

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 16

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. Teflon Tubing x 1m
3. Deioniser Column Resin Refill


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


8. US Mains Power Cable 230v


9. Installation Guide– Precision Hydrogen

x 1

10. 4 or 8 Litre Water Bottle**


11. Transit Plugs x 2
**Optional Extra, Includes additional Barbed Hose Fitting
All of the generator output ports are located on 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. Remove the packing straps and lift the lid upwards.
2. Next remove the fittings kit tray and the outer cover that makes up the main box of
the packaging.
3. Next, with someone on either side of the unit, position your hands underneath the
unit ready to lift.
4. Ensuring your knees are bent and your back is straight, lift the unit to the desired

Page 17

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


Page 18

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 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.
Please ensure generator is positioned so as to permit easy disconnection if required.
Do not expose the unit to freezing conditions. Please adhere to the operating
temperatures below:
Minimum Operating Ambient Temperature:

10 °C (50 °F)

Maximum Operating Ambient Temperature:

35 °C (95 °F)

Note: It is recommended that the Precision Hydrogen 1200cc unit is left to run for 3
hours, and the Precision Hydrogen Trace 1200cc unit is left to run for 24 hours before

Page 19

Generator Overview
General Dimensions
380 mm / 14.9”

406mm / 15.9”

540 mm / 21.2”

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

Page 20

Unit Controls
Touch Screen

Rear Connections

O2 vent
H2 vent
Power Switch
Master Connection*
Slave Connection*
Power Inlet
H2 Detector**
Water Supply Fill
H2 Exhaust
H2 Delivery

Refer to page 29 for information on using Master and Slave connections.


Refer to page 28 for information on using the optional H2 Detector.

Page 21

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 4mm OD for the H2
Exhaust and 6mm OD for the H2 Vent.

Page 22

Water Quality
Use only ASTM Type II, or better, deionised water, which must have a conductivity
of less than or equal to 1μS/cm (greater than 1 MΩ resistivity) @ 20°C and should be
replaced as required. Water quality should be checked prior to being used to supply the
Precision Hydrogen Generator.
Use of water in the Precision Hydrogen 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 tanks detect when the water level reaches a
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 Tygon 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.



Page 23

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

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.

The external water supply should be checked prior to pushing the recovery button
which will then re-engage the load pump and will allow the generator to continue to fill
with water.
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 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 HMI.

Page 24

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 25

Water Usage
The water consumption rate of the Precision Hydrogen 1200cc and Hydrogen Trace
1200cc Generator is shown in the below graph.

Page 26

Electrical Connection
Connect the generator into an appropriate voltage supply between 100-230VAC, refer
to the generator serial plate for input specification and ensure your supply matches the
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.


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.


Green & Yellow or


LIVE (L):-




Neutral (N):-




Electrical requirements are 100-230VAC nominal. However, running continuously at
voltages outwith this is not recommended. Extended periods at extremes can have a
detrimental effect on the operation and life of the generator.
If a substitute main supply cord is used, ensure that it has adequate rating. Failure to do
so could cause damage to the generator.

Page 27

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

Mains power is connected

Turn the power switch ON. The digital display will light up, the cooling fans will rotate and
the internal pumps may automatically run to load water if the internal tanks are not full.
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 next screen displayed to the user will be the Home screen, where two options will
be 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
Also displayed on this screen are the Shutdown and Back options. Shutdown will
depressurize the generator. This should be selected before turning the unit off using the
Power switch at the rear of the unit. Finally, the Back option returns the user to the home
screen where the Start option will allow the flow of hydrogen to the application.
Upon selection the unit will take a few moments to adjust to the desired delivery
pressure. 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, an alarm will sound and a red 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 Precision Hydrogen generators. 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, therewith preventing
potential damage to the instrument.
Page 28

H2 Detector Option


These are not standard serial ports, damage to serial equipment is
highly likely if connected. 24Vdc signal level exists on certain pins with
a maximum power rating of 5W.

The Precision Hydrogen 1200cc models can be purchased along with a H2 detector unit.
The detector is intended for use with a GC, it is recommended that the detector unit is
placed above the height of the GC outlet. The detector can be wall mounted.
This unit is plugged, from the ‘In’ port at the rear on the detector, into the ‘H2 Detector’
port at the rear of the generator, as shown below. This connection will provide the detector unit with power and allows communication between the generator and the detector
The detector will take samples continuously and both the detector and the Precision Hydrogen Trace will alarm if dangerous levels of Hydrogen are detected, the Precision Hydrogen Trace will then shut down.
Multiple detectors can be connected to one generator, up to 4 in number. If this is desired, connect the first detectors ‘Out’ port to the second detectors ‘In’ port, as illustrated
Contact your local Peak Sales rep or distributor for ordering information on the H2 Detector.
Precision Hydrogen (Trace)

H2 Detector



Page 29


Expanding Capacity


These are not standard serial ports, damage to serial equipment is
highly likely if connected. 24Vdc signal level exists on certain pins with
a maximum power rating of 5W.

The Precision Hydrogen (Trace) 1200cc has an expandable feature, where the flow capacity of the unit is increased, by connecting up to 16 units in a Master-Slave format.

Rear Connections
In order to use this feature the units must be connected together via the ‘Master’ port
on the first Precision Hydrogen (Trace) 1200cc, and the ‘Slave’ port at the rear of the
next Precision Hydrogen (Trace) 1200cc unit.
The first Precision Hydrogen (Trace) 1200cc unit is automatically defined as the Master,
and before the connections are made and H2 is supplied, the desired pressure must be
set on all units. This must be the same pressure for all.
The user can now press Start on the Master unit to begin the flow of H2. The Master will
now manage all the other units.
The Data Cables (08-8902) used to connect units together can be purchased from
Peak Scientific.

Master Port
Slave Port


Page 30



Switching the Unit Off
The unit can be switched off at any time using the following procedure.
Firstly, press the Stop button on the Touch screen, then press Menu, and finally 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.

Clean the outside of the Generator only using 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.


Page 31

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

Deioniser Column Replacement
Precision Hydrogen 1200cc
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. Only Peak Scientific approved components should be
used with the Precision Hydrogen (Trace) 1200cc, please refer to page 31 for details on
ordering the required service kits.
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 a menu screen with an option
called COLUMN, this option should now be selected. If this is a scheduled change,
the screen will already display CHANGE D.I. COLUMN. The user should select the
CONTINUE option.

2. The two screens below will now be shown for Manual and Scheduled changes
respectively. The CHANGE button on both screens should now be selected.

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 32

4. The deioniser column is held in place by two Velcro straps, these must be
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

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.

Page 33

Service Requirements
Service Schedule
Purchase Interval


12 Months

Precision Hydrogen 1200cc Annual
Maintenance Kit

24 Months

Page 34

Precision Hydrogen 1200cc 24 Month Interval
Maintenance Kit


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
• Contact your service provider.

Diagnostics Failed Alarm

• Contact your service provider.

Cell Over Voltage Alarm

• Contact your service provider.

Over Pressure Alarm

• Contact your service provider.

Capacity Excess Alarm

• Check external pipework for leaks.
• Contact your service provider.

Water Level Fault

• Contact your service provider.

Low Water Supply Alarm

• Check water supply level and fill if
• Contact your service provider.

Hydrogen detected*

• Check for external leaks.

The generator is not producing hydrogen

• Check the Customer Set Pressure is higher
than 1PSI
• Contact your service provider.

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

* If Hydrogen Detector is fitted.

Page 35

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

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

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

Product Warranty Registration
Contact name
Email address
Generator serial #
Model type
Installation date
Do you still use an
alternative gas solution i.e.
cylinders or bulk liquid?


What gas requirements do
you have in your lab?




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.
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
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

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 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 36

Page 37

Page 38

Page 39

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
To discuss Peak Protected generator cover and payment options speak to your local Peak
Representative or for further information contact:

Peak Scientific
Fountain Crescent
Inchinnan Business Park
Scotland, UK
Tel: +44 141 812 8100
Fax: +44 141 812 8200
For further information on any of our
generator products please contact

Copyright © Peak Scientific Instruments Ltd 2018 — Precision Hydrogen 1200cc User Manual Rev 4 RSID 2379 EN —24/09/2018

Search for similar resources