IEC 62282-4-102:2022

IEC 62282-4-102 ®
Edition 2.0 2022-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fuel cell technologies –
Part 4-102: Fuel cell power systems for industrial electric trucks electrically
powered industrial trucks – Performance test methods

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IEC 62282-4-102 ®
Edition 2.0 2022-12
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Fuel cell technologies –
Part 4-102: Fuel cell power systems for industrial electric trucks electrically
powered industrial trucks – Performance test methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.070 ISBN 978-2-8322-6314-3
– 2 – IEC 62282-4-102:2022 RLV © IEC 2022
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 9
3 Terms and definitions . 10
4 Symbols . 13
5 Reference Standard conditions . 15
6 Heating value base . 15
7 Test preparation . 16
7.1 General . 16
7.2 Data acquisition plan . 16
8 Test set-up . 16
9 Instruments and measurement methods . 18
9.1 General . 18
9.2 Measurement instruments . 18
9.3 Measurement points . 19
9.4 Minimum required measurement systematic uncertainty . 20
10 Test conditions . 20
10.1 Laboratory conditions . 20
10.2 Installation and operating conditions of the system . 20
10.3 Indication of battery condition . 21
10.4 Determination of state of charge of the battery . 21
10.5 Quality of test fuel . 21
10.5.1 Hydrogen . 21
10.5.2 Methanol solution . 21
11 Fuel consumption test. 21
11.1 Hydrogen fuel consumption test . 21
11.1.1 General . 21
11.1.2 Test method . 21
11.1.3 Calculation of results . 22
11.2 Methanol fuel consumption test . 24
11.2.1 General . 24
11.2.2 Test method . 24
11.2.3 Calculation of average methanol fuel power input . 25
12 Electrical power output test. 25
12.1 General . 25
12.2 Test method . 26
12.3 Calculation of average electrical power output . 26
12.4 Computation of electrical efficiency . 26
13 Type tests on operational performance . 26
13.1 Cold start Maximum power output test . 26
13.1.1 General . 26
13.1.2 Test method . 27
13.1.3 Processing of data . 27
13.2 Power cycling electrical load test . 27

13.2.1 General . 27
13.2.2 Test method . 27
13.2.3 Processing of data . 27
13.3 Accessory load voltage spike test . 27
13.3.1 General . 27
13.3.2 Test method . 27
13.3.3 Processing of data . 28
14 Power stability under operation . 28
14.1 General . 28
14.2 Delivered power . 28
14.3 Power absorbed Regenerated power . 29
15 Type tests on environmental performance . 30
15.1 General . 30
15.2 Noise test . 30
15.2.1 General . 30
15.2.2 Test conditions . 30
15.2.3 Test method . 31
15.2.4 Processing of data . 32
15.3 Exhaust gas test . 32
15.3.1 General . 32
15.3.2 Components to be measured . 32
15.3.3 Test method . 32
15.3.4 Processing of data . 33
15.4 Discharge water test . 35
15.4.1 General . 35
15.4.2 Test method . 35
16 Test reports . 36
16.1 General . 36
16.2 Title page . 36
16.3 Table of contents . 36
16.4 Summary report . 36
16.5 Checklist for performance parameters . 36
Annex A (informative) Heating values for hydrogen and methanol at reference
standard conditions . 37
Annex B (informative) Guidelines for the contents of detailed and full reports . 38
B.1 General . 38
B.2 Detailed report . 38
B.3 Full report . 38
Annex C (informative) Checklist for performance criteria dealt with in this document . 39
Bibliography . 42

Figure 1 – Fuel cell power systems for industrial electric trucks .
Figure 1 – Fuel cell power systems for electrically powered industrial trucks . 9
Figure 2 – Example of a test set-up for hydrogen fuel . 17
Figure 3 – Example of a test set-up for methanol fuel . 18
Figure 4 – Energy flow for regenerated power and delivered power . 28
Figure 5 – Noise measurement points for fuel cell power systems . 31

– 4 – IEC 62282-4-102:2022 RLV © IEC 2022
Table 1 – Symbols and their meanings for electric and thermal performance . 14
Table 2 – Symbols and their meanings for environmental performance . 15
Table 3 – Delivered power measurements . 29
Table 4 – Power absorbed Regenerated power measurements . 30
Table 5 – Compensation of readings against Correction values corresponding to the
effect of background noise . 31
Table A.1 – Heating values for hydrogen and methanol at reference standard
conditions . 37

INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FUEL CELL TECHNOLOGIES –
Part 4-102: Fuel cell power systems for industrial electric trucks
electrically powered industrial trucks – Performance test methods

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
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9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition IEC 62282-4-102:2017. A vertical bar appears in the margin
wherever a change has been made. Additions are in green text, deletions are in
strikethrough red text.
– 6 – IEC 62282-4-102:2022 RLV © IEC 2022
IEC 62282-4-102 has been prepared by IEC technical committee 105: Fuel cell technologies.
It is an International Standard.
This second edition cancels and replaces the first edition published in 2017. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) alignment of the Scope with the second edition of IEC 62282-4-101:2022;
b) deletion of terms and definitions (previous entries 3.5, 3.10, and 3.15);
c) addition of new terms in Clause 3: "delivered power" (3.13) and "regenerated power" (3.14);
d) revision of symbols and their meanings in alignment with those of IEC 62282-3-201;
e) replacement of "reference conditions" with "standard conditions" as seen in Clause 5;
f) revision of the test method for the accessory load voltage spike test (13.3.2);
g) addition of clarifications in Clause 14 (Power stability under operation);
h) addition of a checklist for performance criteria dealt with in this document (Annex C).
The text of this International Standard is based on the following documents:
Draft Report on voting
105/947/FDIS 105/954/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
A list of all parts in the IEC 62282 series, published under the general title Fuel cell technologies,
can be found on the IEC website.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

INTRODUCTION
This part of IEC 62282-4 provides consistent and repeatable test methods for the electric,
thermal and environmental performance of fuel cell power systems for industrial electric trucks
electrically powered industrial trucks.
The IEC 62282-4 series deals with categories such as safety, performance, and
interchangeability of fuel cell power systems for propulsion other than road vehicles and
auxiliary power units (APUs). This document (IEC 62282-4-102) focuses on performance test
methods for fuel cell power systems for used to drive industrial electric trucks, which are being
manufactured and used increasingly worldwide. This is because such applications are urgently
demanded needed in the world.
This part of IEC 62282-4 describes type tests and their test methods only. No routine tests are
required or identified, and no performance targets are set in this document.
Fuel cell systems used in industrial electric trucks electrically powered industrial trucks, such
as forklift trucks, are hybrids use both batteries and fuel cells, and so operate in several different
modes. Similarly, forklift trucks operate in different modes. The purpose of this document is to
evaluate the fuel cell system in the various combinations of fuel cell modes and forklift truck
modes. This document breaks down these different modes and provides a framework for
designing and evaluating a fuel cell system for use specifically in a forklift truck.
This part of IEC 62282-4 is intended to be used by either manufacturers of fuel cell power
systems used for industrial electric trucks and/ electrically powered industrial trucks or those
who evaluate the performance of the systems used in them for certification purposes or both.
Users of this document selectively execute test items that are suitable for their purposes from
those described in this document can select and perform the tests they need from those
described. This document is not intended to exclude any other methods tests.

– 8 – IEC 62282-4-102:2022 RLV © IEC 2022
FUEL CELL TECHNOLOGIES –
Part 4-102: Fuel cell power systems for industrial electric trucks
electrically powered industrial trucks – Performance test methods

1 Scope
This part of IEC 62282 specifies the performance test methods of fuel cell power systems for
propulsion and auxiliary power units (APU). This document covers fuel cell power systems for
propulsion other than those for road vehicles.
The scope of this document is limited to electrically powered industrial trucks. Hybrid trucks
that include an internal combustion engine are not included in the scope. The scope of this
standard will be applicable to material-handling equipment, e.g. forklifts.
This document covers the performance test methods of fuel cell power systems intended to be
used for electrically powered industrial trucks as defined in ISO 5053-1, except for:
– rough-terrain trucks;
– non-stacking low-lift straddle carrier;
– stacking high-lift straddle carrier;
– rough-terrain variable-reach truck;
– slewing rough-terrain variable-reach truck;
– variable-reach container handler;
– pedestrian propelled trucks.
This document applies to gaseous hydrogen-fuelled fuel cell power systems and direct methanol
fuel cell power systems for electrically powered industrial trucks. The following fuels are
considered within the scope of this document:
– gaseous hydrogen, and
– methanol.
This document does not apply to reformer-equipped fuel cell power systems.
This document covers the fuel cell power system as defined in 3.7 and Figure 1.
This document applies to DC type fuel cell power systems, with a rated output voltage not
exceeding DC 150 V for indoor and outdoor use.
This document covers fuel cell power systems whose fuel source container is permanently
attached to either the industrial truck or the fuel cell power system. A fuel source container of
the detachable type is not permitted.
Fuel cell power systems intended for operation in potentially explosive atmospheres are
excluded from the scope of this document.
This document does not cover the fuel storage systems using liquid hydrogen.
All systems with integrated energy storage systems are covered by this document. This includes
systems such as batteries for internal recharges or recharged from an external source.

The following are not included in the scope of this document:
– detachable type fuel source containers;
– hybrid trucks that include an internal combustion engine;
– reformer-equipped fuel cell power systems;
– fuel cell power systems intended for operation in potentially explosive atmospheres;
– fuel storage systems using liquid hydrogen.

Key
EMD electromagnetic disturbance
EMI electromagnetic interference
NOTE A fuel cell power system can contain all or some of the above components.
Figure 1 – Fuel cell power systems for electrically powered industrial trucks
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies.
For undated references, the latest edition of the referenced document (including any
amendments) applies.
IEC 61672-1, Electroacoustics – Sound level meters – Part 1: Specifications
IEC 62282-3-201, Fuel cell technologies – Part 3-201: Small stationary fuel cell power systems
– Performance test methods for small fuel cell power systems
IEC 62282-6-300:2012, Fuel cell technologies – Part 6-300: Micro fuel cell power systems –
Fuel cartridge interchangeability
ISO 9000, Quality management series of standards
ISO 6798-1, Reciprocating internal combustion engines – Measurement of sound power level
using sound pressure – Part 1: Engineering method

– 10 – IEC 62282-4-102:2022 RLV © IEC 2022
ISO 6798-2, Reciprocating internal combustion engines – Measurement of sound power level
using sound pressure – Part 2: Survey method
ISO 14687, Hydrogen fuel quality – Product specification
ISO 14687-2, Hydrogen fuel – Product specification – Part 2: Proton exchange membrane (PEM)
fuel cell applications for road vehicles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following
addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
3.1
noise level
sound pressure level produced by the fuel cell power system measured at a specified distance
in all operation modes
Note 1 to entry: Noise level is expressed in decibels (dB) and measured as described in 15.2.
3.2
background noise level
sound pressure level of ambient noise at the measurement point
Note 1 to entry: This measurement is taken as described in 15.2 with the fuel cell power system in the cold state.
3.3
battery
electrochemical energy storage device that either provides energy input to support parasitic
loads and/or provides electrical energy output or both
Note 1 to entry: Back-up batteries for control software memory and similar applications are not included.
3.4
cold state
state of a fuel cell power system at ambient temperature with no power input or output
[SOURCE: IEC/TS 62282-1:2013, 3.110.1 IEC 60050-485:2020, 485-21-01]
3.5
discharge rate
mass of discharged exhaust gas component per unit of time
3.5
discharge water
water discharged from the fuel cell power system including waste water and condensate
Note 1 to entry: Discharge water does not constitute part of a thermal recovery system.
[SOURCE: IEC/TS 62282-1:2013, 2.2, modified – Note 1 to entry added.]

3.6
fuel cell system electrical efficiency
ratio of the average electric power output of a fuel cell power system at for a given duration to
the average fuel power fed to the same fuel cell power system at for the same duration
3.7
fuel cell power system
generator system that uses one or more fuel cell modules to generate electric power and heat
Note 1 to entry: See Figure 1 for a block diagram of a fuel cell power system.
Note 2 to entry: A fuel cell power system may contain all or some of the components shown in Figure 1. The fuel
cell power system for use with industrial trucks will be in one of the forms as outlined in 3.9 and 3.10 of IEC 62282-
4-101.
[SOURCE: IEC/TS 62282-1:2013, 3.49, modified – New Note 1 to entry has been added, and
existing Note 1 to entry has become Note 2 to entry with the addition of the second sentence.]
Note 1 to entry: The fuel cell power system for use with industrial trucks will be in one of the forms as outlined in
IEC 62282-4-101:2022, 3.9 and 3.10.
[SOURCE: IEC 60050-485:2020, 485-09-01, modified – Note 1 to entry has been added.]

– 12 – IEC 62282-4-102:2022 RLV © IEC 2022
Coolant
Fuel (Hydrogen, Methanol)
System boundary
Excess/released fuel
Fuel storage
Thermal
(Hydrogen, Waste heat
Methanol)
Internal power needs
Fuel regulating
Power
Fuel cell
Electrical power output
and piping
conditioning
system
Oxidant (air) module
Energy
t
Ventilation Exhaust gases
Ventilation air
system
Water
Waste water
Water
treatment and
Control
ti t
EMD
EMI
Vibration,
Noise,
IEC
id i
Key
Fuel cell power system including subsystems. The interface is defined as a conceptual or functional
one instead of hardware such as a power package.

Subsystems; fuel cell module, fuel processor, etc. These subsystem configurations depend on the
kind of fuel, type of fuel cell or system.
The interface points in the boundary to be measured for calculation data.

EMD electromagnetic disturbance
EMI electromagnetic interference
Figure 1 – Fuel cell power systems for industrial electric trucks
3.8
fuel input
amount of hydrogen or methanol supplied to the fuel cell power system
3.9
fuel consumption
volume or mass of fuel consumed by the fuel cell power system under specified operating
conditions
3.10
fuel power consumption
amount of energy per time unit contained in the fuel consumed by the fuel cell power system
3.10
minimum electric power output
minimum power output, at which a fuel cell power system is able to operate continuously at a
steady state
3.11
rated power
maximum continuous electric power output power that a fuel cell power system is designed to
achieve under normal operating conditions specified by the manufacturer
[SOURCE: IEC/TS 62282-1:2013, 3.85.4, modified – Note 1 to entry deleted IEC 60050-
485:2020, 485-14-04, modified – Note 1 to entry has been deleted.]
3.14
auxiliary load
power consumed by auxiliary machines and equipment such as balance of plant (BOP)
necessary to operate a fuel cell power system
3.15
storage state
condition of a fuel cell power system that is non-operational and possibly requiring, under
conditions specified by the manufacturer, the input of thermal or electric energy in order to
prevent deterioration of the components and/or energize the control systems and other
components, and is ready for start-up
[SOURCE: IEC/TS 62282-1:2013, 3.110.6, modified – Reference to an inert atmosphere has
been deleted, "and/or energize control systems and other components, and is ready for start-
up" has been added.]
3.12
test duration
time interval in which data points required for the computation of test results are recorded
3.13
delivered power
current and voltage delivery requirements of the industrial truck at various intervals as
necessary in order to maintain acceptable truck performance
3.14
regenerated power
electro-dynamic power in which the energy produced by the motors is fed into the contact line
or into energy storage on-board devices
Note 1 to entry: Examples of storage devices: batteries, flywheels.
[SOURCE: IEC 60050-811:2017, 811-06-25, modified – The term "regenerative braking" has
been replaced with "regenerated power" and in the definition "braking" has been replaced with
"power".]
4 Symbols
The symbols and their meanings used in this document are given in Table 1 for electric and
thermal performance and in Table 2 for environmental performance, with the appropriate units.

– 14 – IEC 62282-4-102:2022 RLV © IEC 2022
Table 1 – Symbols and their meanings for electric and thermal performance
Symbol Definition Unit
M, m Molar mass, mass
M M
Molar mass of fuel kg/mol
mf f
m
Fuel mass measured over the test duration kg
f
p Pressure
p p Reference Standard pressure (101,325 kPa (abs))
kPa (abs)
0 s
p Average fuel pressure
kPa (abs)
f
P, dP Power, power change rate
P Average net electric power output
kW
n
P P Average fuel power input
kJ/s
inf fin
E Input energy
E Input energy of fuel per mass
kJ/kg
mf
E E Input energy of fuel (mass and volume) per volume
kJ/kgl
fm vf
E E
Total fuel input energy
kJ
inf fin
q
Mass flow rate
m
q Average mass flow rate of fuel under the test conditions
kg/s
mf
q
Volumetric flow rate
V
q
Average volumetric flow rate of fuel under the test conditions l/min
Vf
q q Average volumetric flow rate of fuel under reference standard conditions l/min
Vf0 Vfs
H Heating value
H H
Heating value of fuel on a molar basis under reference standard conditions kJ/mol
f0 fs
H
Heating value of liquid mass kJ/kg
fl
t Time
Δt Test duration s, min
T Temperature
T T Reference Standard temperature (273,15 K)
K
0 s
T
Average fuel temperature
K
f
ΔT Temperature difference between heat recovery fluid output and input K
V, V
Volume, molar volume
m
V
Total fuel volume measured over the test duration l
f
Reference Standard molar volume of ideal gas (22,414 l/mol) (at reference standard
V V
m l/mol
m0 ms
temperature T = 273,15 K and pressure p = 101,325 kPa)
0 0
W Electric energy
W
Electric energy output kW · h
out
η Efficiency
η η Electric efficiency %
e el
η Heat recovery efficiency %
th
η Overall energy efficiency %
total
Table 2 – Symbols and their meanings for environmental performance
Symbol Definition Unit
φ Volume fraction
vol % or
φ
measured volume fraction of each the component B
B,meas
ml/m
vol % or
φ
corrected volume fraction of each the component B
B,corr
ml/m
φ (O ) measured O (oxygen) volume fraction in atmosphere at air inlet in dry state
vol %
at 2 2
φ (O ) measured O volume fraction in dry exhaust gas
vol %
ex 2 2
φ (CO)
ex corr
corrected CO volume fraction in dry exhaust gas
ml/m
φ (CO)
ex,corr
ml/m
φ (THC)
corrected total hydrocarbon (THC) volume fraction in dry exhaust gas (carbon
ex corr
C
φ (THC) equivalent)
ex,corr
equivalent
γ Mass concentration
γ (CO)
CO mass concentration in dry exhaust gas
mg/m
ex
γ (THC)
THC mass concentration in dry exhaust gas mg/m
ex
ε Emission
ε(CO) mass of CO emission per unit energy of input fuel mg/kW · h

ε(THC) mass of THC emission per unit energy of fuel input mg/kW · h

α Atom ratio
hydrogen to carbon atom ratio of the THC in the exhaust gas
α(THC)
H Heating value
ω Mass fraction
ω
mass fraction of methanol
B
5 Reference Standard conditions
The reference standard conditions are specified as follows:
– reference standard temperature: T T = 273,15 K (0 °C);
0 s
– reference standard pressure: p p = 101,325 kPa (abs).
0 s
6 Heating value base
Except if otherwise specified, the given heating value of fuel shall be the low heating value
(LHV) or similar.
NOTE The heating values of hydrogen and methanol (LHV and HHV) are given in Annex A.
In cases where the LHV is applied for the calculation of energy efficiency, it is not necessary to
add the initialism LHV, as shown below:
η η , η , or η = XX %
e el th total
If the higher heating value (HHV) is applied, the initialism HHV shall be added to the value of
energy efficiency as follows:
– 16 – IEC 62282-4-102:2022 RLV © IEC 2022
η η , η , or η = XX % (HHV)
e el th total
7 Test preparation
7.1 General
Clause 7 describes typical items that shall be considered prior to the implementation of a test.
For each test, an effort shall be made to minimize uncertainty by selecting high-precision
instruments and planning the tests with attention to detail. Detailed test plans shall be prepared
by the parties to the test using this document as their basis. A written test plan shall be prepared.
The following items shall be considered for the test plan:
1) objective;
2) test specifications;
3) test personnel qualifications;
4) quality assurance management standards (ISO 9000, ISO 9001 and ISO 9004, collectively
known as the ISO 9000 family, or other equivalent standards);
5) target uncertainty;
6) identification of measurement instruments (refer to Clause 9);
7) estimated range of test parameters;
8) data acquisition plan.
7.2 Data acquisition plan
In order to meet the target uncertainty, proper duration and frequency of readings shall be
defined and data recording equipment shall be prepared before the performance test.
Automatic data acquisition using a personal computer or similar is preferable.
8 Test set-up
Figure 2 and Figure 3 illustrate examples of test set-ups that are required to conduct fuel cell
power system testing with hydrogen fuel and methanol fuel, respectively, which are described
in this document. An electric load is connected to a fuel cell power system.

Key
AA
ammeter
VV
voltmeter
T
thermometer
pp
pressure gauge
qq
flowmeter
FF
integrating flowmeter
PP
electric power meter
WW
integrating electric power meter (electric energy meter)

a
To collecting device to measure volume (or weight), pH, biochemical oxygen demand (BOD), chemical oxygen
demand (COD).
b
To collecting device to analyse components.
Figure 2 – Example of a test set-up for hydrogen fuel

– 18 – IEC 62282-4-102:2022 RLV © IEC 2022

NOTE See explanations of the symbols in Figure 2.
a
To collecting device to measure volume (or weight), pH, biochemical oxygen demand (BOD), chemical oxygen
demand (COD).
b
To collecting device to analyse components.
Figure 3 – Example of a test set-up for methanol fuel
9 Instruments and measurement methods
9.1 General
Measurement instruments and measurement methods shall conform to the relevant
international standards. They shall be selected to meet the measurement range specified by
the manufacturer and the required accuracy of measurements.
9.2 Measurement instruments
Measurement instruments are listed according to their intended use:
a) apparatus for measuring voltage spikes: oscilloscope, high-frequency analysers;
b) apparatus for measuring the electric power input and output, and electric energy input and
output:
– electric power meters, electric energy meters, voltmeters, ammeters;
c) apparatus for measuring fuel input:
– flowmeters, integrating flowmeters, weight meters, pressure sensors, temperature
sensors;
d) apparatus for measuring ambient conditions:
– barometers, hygrometers, and temperature sensors;
e) apparatus for measuring the noise level:
– sound level meters as specified in IEC 61672-1 or other measuring instruments of
equivalent or better accuracy;
f) apparatus for measuring concentrations of the exhaust gas components:
– oxygen analyser (e.g. based on paramagnetic, electrochemical or zirconium oxide
sensors);
– carbon dioxide analyser (e.g. GC-MS or based on infrared absorption sensor);

– carbon monoxide analyser (e.g. based on nondispersive infrared or electrochemical
sensor);
g) apparatus for determining the discharge water:
– graduated cylinder (for volume measurement), temperature sensor, pH meters, BOD
probes.
NOTE 1 BOD means Biochemical Oxygen Demand, COD stands for Chemical Oxygen Demand, and THC is Total
Hydrocarbon.
9.3 Measurement points
Measurement points for the different parameters are described below.
a) Hydrogen fuel flow rate:
Place a flowmeter for fuel on the fuel supply line to the fuel cell power system to measure
the fuel flow rate.
b) Hydrogen integrated fuel input:
Place an integrating flowmeter for fuel on the fuel supply line to the fuel cell power system
to measure the fuel input. The integrating flowmeter shall combine a flowmeter that
measures the fuel flow rate.
c) Methanol fuel input weight:
Place a weight meter under the fuel tank to measure the weight of fuel and tank together.
Methanol fuel input weight is measured by subtracting the weight after the test from that
before the test.
d) Fuel temperature:
Connect a thermometer or a thermocouple immediately downstream of the fuel flowmeter.
e) Fuel pressure:
Place a pressure meter immediately downstream of the fuel flowmeter to measure the gauge
pressure of fuel.
f) Electric power output:
Connect an electrical power meter to the electrical power output terminal of the fuel cell
power system and close to the system boundary.
g) Electric energy output:
Connect an electrical energy meter to the electrical power output terminal of the fuel cell
power system and close to the system boundary. The electrical energy meter shall
incorporate an electrical power meter that indicates electrical power output.
h) Fuel composition:
The fuel used for the tests shall be sampled and analysed for its composition for each test
run.
i) Atmospheric pressure:
Place an absolute pressure meter adjacent to the fuel cell power system where it will not be
affected by ventilation, air intake or exhaust of the fuel cell power system.
j) Atmospheric temperature:
Place a thermometer adjacent to the fuel cell power system where the thermometer will not
be affected by ventilation, air intake or exhaust of the fuel cell power system.
k) Atmospheric humidity:
Place a hygrometer adjacent to the fuel cell power system where the hygrometer will not be
affected by v
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