Precision Hydrogen (All B&W Screen Models)
User Manual

Copyright © Peak Scientific Instruments Ltd 2022 — Precision Hydrogen User Manual Rev 12 PN UM-PrecisionHydrogen RSID 1076 EN —29/04/2022

Contents
Change History
How to use this Manual
Introduction
Health and Safety Data
Deioniser Resin
Desiccant (Applies to Precision Hydrogen only)
Warranties and Liabilities
Safety Notices
Symbols
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
Fittings Kit Contents
Unpacking Instructions
Transit Plug Removal
Installation
Location
Generator Overview
General Dimensions
Unit Controls
Rear Connections
Tubing
H2 Ventilation
Water Quality
Automatic Filling
Water Usage
Electrical Connection
Start-up Sequence
Liquid Leak Detectors
Gas Traps
Switching the Unit Off
Cleaning
Deioniser Column Replacement - A
Precision Hydrogen Trace
Deioniser Column Replacement - B
Page 2

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Precision Hydrogen
Replacement of Desiccant Column
Precision Hydrogen Only
Regeneration of DesiccantService Requirements
Troubleshooting

Page 3

36
38
38
39
40
41

Change History
Rev
5
6
7
8
9
10
11
12

Comment
Units added to Dimensions
Fittings Kit Update
Transit Plugs Added
Declarations Update
Hydrogen Trace Purity Update
Hydrogen Trace Purity Update
Declarations Updates
Fittings Kit Updates

Name
LC
LC
LC
LC
LC
LC
CD
LC

Date
30/10/2017
02/11/2017
22/03/2018
24/04/2018
03/11/2020
04/05/2021
30/08/2021
29/04/2022

How to use this ManualThis manual is intended for end users and has been written so that it can either be readas 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 4

Introduction
The Precision Hydrogen 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 99.99999% (7-9’s)With the Precision Hydrogen based on proven technology, it produces Hydrogen byelectrolysis using a Proton exchange membrane (PEM) cell. Moisture removal is achievedby 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 andin 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
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/AColour				TanIgnition Temperature

427 °C (Estimated)

Odour				None
Explosion Limits 		N/ADecomposition 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 sunlightFire & 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 atleast 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
Bag containing orange to green indicating silica gel.
Chemical Components
Amorphous silica 98.2%, activated colouring agent 0.2% max.
Form 				Beads				Flash Point 			N/AColour				Dry: yellow/orange
Ignition Temperature		

Saturated: Green>1000 °C

Odour				Odourless
Explosion Limits 		N/ADecomposition 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 orequivalent.

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 < 1 = No immediate concern.
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 fromdefects in material and workmanship for the period of three years from the date ofdelivery.
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 generalityof 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 shallhave 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 thenegligence or breach of duty of the Company or any failure by the Company tocomply with the provisions of sub-clause 2 hereof.
8. Save as provided in sub-clause 2 hereof the Company shall not be liable in respectof 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 thanpursuant 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 anoperating 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 bedamaged or become hazardous to persons or property.

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

WARNINGCAUTION

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

WARNINGWARNING

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 theInstitute 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 andunderstood before installation and operation of your Peak ScientificHydrogen Generator. Please follow the appropriate safety standards forhandling Hydrogen gas and other gases as determined by the laws andregulations 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 Directions for Use 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 toprevent 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. External water bottles must
be made of a dark coloured glass or high density polyethylene in order to prevent
biological growth.
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 connectpressurised 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 theoperational 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

EU Declaration of Conformity
We			

Peak Scientific Instruments Ltd.

Of			

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Hereby declare that, this declaration of conformity is issued under the sole
responsibility of the manufacturer.
Equipment Type:		

Hydrogen Generator

Model Designator:

Precision Hydrogen (100cc, 200cc, 300cc & 450cc)

					Precision Hydrogen Trace (250cc & 500cc)

To which this declaration relates, is in conformity with the following applicable EU
Directives, harmonized standards, and other normative requirements.
•

Low Voltage Directive 2014/35/EU
EN 61010-1: 2010 Safety Requirements for 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– EMC Requirements. (Class A)•

Restriction on the use of certain hazardous substances in electronic equipment(RoHS) Directive 2011/65/EU as amended by EU 2015/863.

•

FCC 47 CFR Part 15 class A
Unintentional radiators; Conducted and Radiated emissions limits.

Signed for and on behalf of Peak Scientific by		
Signed:				
Name:

Fraser Dunn

Position:

Design Engineering Manager

		Peak Scientific Instruments ltd,
		Inchinnan, Renfrew, Scotland, PA4 9RE, UK.
Date:		

Page 1330th August 2021

UK Declaration of Conformity
We			

Peak Scientific Instruments Ltd.

Of			

Fountain Crescent, Inchinnan, Renfrewshire, PA4 9RE

Hereby declare that, this declaration of conformity is issued under the sole
responsibility of the manufacturer.
Equipment Type:		

Hydrogen Generator

Model Designator:

Precision Hydrogen (100cc, 200cc, 300cc & 450cc)

					Precision Hydrogen Trace (250cc & 500cc)

To which this declaration relates, is in conformity with the following applicable UK
Statutory Instruments, Standards and other normative requirements.
•

The Electrical Equipment (Safety) Regulations 2016 (SI 2016 / 1101) as amended.
BS61010-1:2010 Safety Requirements for Electrical Equipment for Measurement
Control and Laboratory Use.

•

The Electromagnetic Compatibility Regulations 2016 (SI 2016 / 1091) as amended.
BS61326-1:2013 Electrical Equipment for Measurement , Control and Laboratory Use– EMC Requirements.

•

The Restriction of the Use of Certain Hazardous Substances in Electrical andElectronic Equipment Regulations 2012 (SI 2012 / 3032) as amended.

Signed for and on behalf of Peak Scientific by		
Signed:				
Name:

Fraser Dunn

Position:

Design Engineering Manager

		Peak Scientific Instruments ltd,
		Inchinnan, Renfrew, Scotland, PA4 9RE, UK.
Date:		

Page 1430th August 2021

WEEE Compliance Statement
The Waste Electrical and Electronic Equipment (WEEE) Regulations SI 2013 No 3113
and or the Waste Electrical and Electronic Equipment (WEEE) Directive 2012/19/EU
apply to all electrical and electronic equipment placed on the market in the UK and EU
covered by the scope of regulations which can be found in the Government GuidanceNotes (PDF) produced by the Department for Business Innovation and skills for the UK
and here for Europe.
All PEAK products that are subject to the WEEE directive are compliant with the
WEEE marking requirement. Such products are marked with the “crossed-out wheeliebin” symbol (shown below) in accordance with European standard EN50419. All
old electrical equipment can be recycled. Please do not dispose of any electricalequipment (including those marked with this symbol) in general rubbish bins. Pleasecontact your dealer or distributor for clarity.

Page 15

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 **PurityGas outlet
Delivery pressure

250 cc/min

500 cc/min

99.99999%***1 x 1/8” Swagelok compression fitting
0-100 psi (0-6.9 bar)

Electrical Requirements
VoltageFrequency
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

GeneralGenerator 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”)
29 kg (64 lbs)
54.0 (21.2”) x 70.0 (27.5”) x 49.0 (19.2”)
54 kg (119 lbs)
20 dB
1000 BTU / Hr
<1.0µ Siemens/cm OR >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.
** All flow rates are stated in sccm at 273.15K and 1.01bar*** Based on O2 content independently verified by National Physical Laboratory, UK

Page 16

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 **PurityGas 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
VoltageFrequency
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

GeneralGenerator 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”)
29 kg (64 lbs)
54.0 (21.2”) x 70.0 (27.5”) x 49.0 (19.2”)
54 kg (119 lbs)
20 dB
1000 BTU / Hr
<1.0µ Siemens/cm OR >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.
** All flow rates are stated in sccm at 273.15K and 1.01bar

Page 17

Principle of Operation
The Peak Scientific Hydrogen Generator uses a proton exchange membrane (PEM) thatis extensively used in industrial and laboratory applications. The reliability of this typeof membrane is assured as it was originally developed for NASA. To produce the highest
purity of Hydrogen that an analytical laboratory requires, Peak Scientific employs theservices of a platinum catalyst in the electrode area.
Electrolysis of water is the best method of producing high purity Hydrogen on
demand. 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 acathode), which are separated by the ion exchange membrane.
When a continuous voltage is applied to the electrodes on the electrolyser cell, thefollowing reactions take place: At the anode (the positively charged electrode), the water molecules lose two electrons
forming an Oxygen molecule and four Hydrogen ions.
Anode		

2 H2O - 4e = O2 + 4 H+

The Oxygen that is produced in this half of the reaction is safely vented to atmosphereat the back of the generator. The four Hydrogen ions that have been produced then passthrough the ion exchange membrane (attracted by the negatively charged cathode) andcollect four electrons reducing them to two Hydrogen molecules.
Cathode4 H+ + 4e = 2H2

The Hydrogen produced is separated from the Oxygen by the ion exchange membrane,
which is impervious to molecular Oxygen. Deionised water is the raw material of thesystem 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 ofyour 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 Hydrogenused - 1cc of water produces 1244cc of Hydrogen. Some electrical energy is lost as heat,
which is removed from the generator by the ventilation system.
Hydrogen is generated on demand. By maintaining the user’s pre-set pressure and using
this as a reference value, the generator will produce the exact amount of Hydrogenrequired. As soon as the demand from the consuming application stops, then no gas is
generated and the generator will maintain the supply lines at the pre-set pressure.

Page 18

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, 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 anddoes not classify the surrounding area as dangerous.
All of the Precision Hydrogen generators have the necessary control circuitry, bothelectrical and mechanical, to ensure the shutdown of the instrument in the event of a
fault or faults occurring.

Page 19

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 alarm.
3. The generator will detect any Hydrogen leaks that occur within the generator, theuser’s application and gas lines. In the event of a major leak the generator willautomatically 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 cellshould the internal pressure reach 8.6 bar (125psi).
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 and visual alarm relevant to the fault condition is displayed. The
generator can sense for internal and external leaks, excessive gas demand and lack ofwater.

Page 20

Unpacking
Although Peak Scientific takes every precaution with safe transit and packaging, it isadvisable 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 thePeak 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 21

Fittings Kit Contents
Supplied in the Fittings Kit are all the fittings required to connect the generator to theapplication. The contents of the Fittings Kit are as follows:
1. Tygon Tubing								x 1m
2. Teflon Tubing*								x 1m
3. Barbed Hose Fitting							x 14. UK Mains Power Cable						x 15. EU Mains Power Cable						x 16. US Mains Power Cable 110v						

x17. US Mains Power Cable 230v					

x18. Installation Guide– Precision Hydrogen				x1

9. 4 Litre Water Bottle**						x 110. Transit Plugs								x 2
*Precision Hydrogen Trace Only**Optional Extra, Includes additional Barbed Hose Fitting
All of the generator output ports are located on the output panel at the rear of thegenerator.

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 screws encircled in red around the bottom of the crate lid and lift
upwards.
2. Next, with someone on either side of the unit, position your hands underneath theunit ready to lift.
3. Ensuring your knees are bent and your back is straight, lift the unit to the desired
location.

Page 22

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 23

Installation
Location
The generator should be located on a flat, level surface for operation - this will ensurethat the water level sensors within the unit operate correctly. Some components in thegenerator 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 thegenerator will become warm to the touch during operation - a minimum clearance of 15
cm (6”) from other bodies is recommended.
Do not locate the generator in a sealed or unventilated room, or in close proximity to any
ignition sources. If the generator is to be stored in an enclosed space the environment
must be controlled via an air conditioner or extraction fan. The risk with Hydrogen is aleak into the environment raising the Hydrogen content to the explosive limit.
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:
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 24

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.
WARNING

Page 25

Unit Controls
Touch Screen

Rear Connections

Hydrogen Trace

Page 26

HydrogenTubing
For the Hydrogen supply line, it is recommended that only clean grade copper orstainless 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 gaslines. 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 thefittings 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 H2Vent.

Page 27

Water Quality
Use only High Grade Deionised water, which must have a conductivity of less than orequal to 1μS/cm @ 20°C and should be replaced as required. Water quality should bechecked 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 watersupply. A suitable external water bottle is available from Peak Scientific.
Note: Customers should check the water quality of the external water supply once aweek 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 aminimum.
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 thebarb to the tubing. Then connect one end to the water supply and the other to the Fillport at the rear of the Precision Hydrogen.
For efficient water filling the external supply should be no more than 2 metres awayfrom the connection on the generator.

WARNINGThe DI Water Supply source MUST NOT be located higher thanthe height of the surface that the Precision Hydrogen generator isplaced upon. A supply located higher than specified will result in thegenerators internal water bottle over filling.
A pressurized DI Water Supply Source will also result in the internal
water bottle over filling, and also MUST NOT be used.

WARNING

Page 28

If the generator cannot load enough water to switch the sensors in the water bottle thegenerator 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 fillwith water.
When the system detects a low water level it starts a 3 hour timer, should the system notreceive enough water to switch the low level sensor it will then stop the generator fromproducing 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 29

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, pleasecontact your Sales Representative for more information.

Page 30

Water Usage
The water consumption rate of the Precision Hydrogen Generator is completelydependent on the rate at which the Hydrogen produced is consumed.
The graphs below show a rough estimation of the water consumption rate for eachmodel with the Precision Hydrogen Family, this shows the water consumption fromthe generator in Stand-by mode and through to the maximum Hydrogen output of thePrecision Hydrogen Generator selected. The Precision Hydrogen does not consume
water while in standby.

Page 31Electrical Connection
Connect the generator into an appropriate voltage supply between 100-230VAC, referto the generator serial plate for input specification and ensure your supply matches therequirements.
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, pleasecheck 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

		

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.

Page 32

Start-up Sequence
CHECK:
1.

H2 Outlet is connected to application2.

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 notfull.
On power up the generator will check the water level, once the water level is at theminimum 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 selectthe Menu option which allows the desired Unit of measure and delivery pressure to be
selected.
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 thehome 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 deliverypressure. 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 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 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 thegas 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 forthese 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 33

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 selectShut Down.
The unit will take a few moments to depressurize after which the power switch at therear of the generator can be switched off.

Cleaning
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 andthe power cord removed from the rear of the Generator.

CAUTION

Page 34

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 - A
Precision Hydrogen Trace
The Deioniser column maintains the water quality of the water as it is circulated throughthe system and to ensure the optimum health of the generator, the resin in the Deioniser
column should be replaced every 12 months.
Listed below are the instructions for replacing the Deioniser column. The user will beprompted to do this by the HMI screen displaying ‘Change DI Column’. However in theevent of a change being required out with the 12 month schedule, this screen can also beaccessed 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 35

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

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 36

Deioniser Column Replacement - B
Precision Hydrogen
The Deioniser column maintains the water quality of the water as it is circulated throughthe system and to ensure the optimum health of the generator, the resin in the Deioniser
column should be replaced every 12 months.
Listed below are the instructions for replacing the Deioniser column. The user will beprompted to do this by the HMI screen displaying ‘Change DI Column’. However in theevent of a change being required out with the 12 month schedule, this screen can also beaccessed 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 37

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

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 38

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 31.
The HMI screen prompts the user to do this.
Instructions are listed below on how to do this.
1. The HMI screen will display CHANGE GEL COLUMN, press CHANGE. The screen willthen warn the user that the system will depressurise, press CONTINUE

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 gel OR regenerated.

Page 39

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 COLUMNCHANGED? screen. This will bring the generator back up to pressure.

Regeneration of Desiccant
When reactivating the desiccant it is vital that the activity indicator is not used tocontrol the process.
1. As a general rule saturated desiccant will require a minimum of 4-6 hours at atemperature of between 105-110°C throughout the entire desiccant bed for thereactivation 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 ovenwill limit the moisture liberated and prevent efficient reactivation. Gas Ovens andmicrowave 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 andallowed to cool. The reactivated desiccant should not be stored in a warm ovenat 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 40

Service Requirements
Service Schedule
Purchase Interval

Component

Visit

Precision Hydrogen Trace Annual
Service Kit
12 Months

Qty.
1

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

1Service 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 yourinstrument can run with the maximum uptime and performance, please contact us atprotected@peakscientific.com

Page 41

Troubleshooting
Problem

The Generator will not switch on and thepower switch does not illuminate

Possible Solution• Ensure power cord is plugged into theGenerator and that the power socket isturned on.
•

Check the fuse in the power cord
plug.

•

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.

•

Check external pipework for leaks.

•

Contact your service provider.

•Contact your service provider.

•

Check Water Supply level, and fill ifnecessary.

•

Contact your service provider.

•

Check for external leaks.

•

Check the Customer Set Pressure is higher
than 1PSI•

Contact your service provider.

•

Check the water quality of the external
supply.

•Contact your service provider.

Capacity Excess Alarm

Water Level Fault

Low Water Supply Alarm

Hydrogen Detected*

The generator is not producing Hydrogen

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

* If Hydrogen Detector is fitted.

Page 42Go Online or Complete and Return
You can register for your FREE 12 month Warranty with ease online atwww.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 atwww.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 addressCompany
Address
City/town
PostcodeCountry
Telephone
Generator serial #Model typeInstallation date
Do you still use analternative gas solution i.e.
cylinders or bulk liquid?

Yes

What gas requirements do
you have in your lab?

HydrogenNo

NitrogenZero Air

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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 yourgenerator, 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 beconsidered active from the date of factory dispatch.
* Complete Plan only

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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 12months. 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, thewarranty will be considered active from the date of factory dispatch.

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
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Peak Scientific
Fountain Crescent
Inchinnan Business Park
Inchinnan
PA4 9RE
Scotland, UK
Tel: +44 141 812 8100
Fax: +44 141 812 8200
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Copyright © Peak Scientific Instruments Ltd 2022 — Precision Hydrogen User Manual Rev 12 PN UM-PrecisionHydrogen RSID 1076 EN —29/04/2022