Geotech GEM5000 User manual

OMGEM5KN –Iss. 5.1 Copyright –Geotechnical Instruments (UK) Ltd

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Operating Manual
OMGEM5KN –Iss. 5.1 Copyright –Geotechnical Instruments (UK) Ltd
GEM5000
TABLE OF CONTENTS
Manual guidelines.................................................................................................................................................... 6
Hazard warnings and safety symbols ................................................................................................................... 6
Notes.................................................................................................................................................................... 6
Introduction............................................................................................................................................................. 7
Safety instructions ............................................................................................................................................... 7
MCERTS.............................................................................................................................................................. 10
CIRIA................................................................................................................................................................... 11
EU Declaration of conformity............................................................................................................................. 12
The GEM5000 gas analyser.................................................................................................................................... 14
The GEM5000 .................................................................................................................................................... 14
GEM5000 standard product .............................................................................................................................. 15
GEM5000 optional products and accessories........................................................................................................ 16
Pitot tube (optional)........................................................................................................................................... 16
Orifice plate (optional)....................................................................................................................................... 16
Temperature probe (optional)........................................................................................................................... 16
Anemometer (optional) ..................................................................................................................................... 16
H2S filter (optional)............................................................................................................................................ 17
Gas analyser manager –GAM (optional) ........................................................................................................... 17
GPS (optional) .................................................................................................................................................... 17
Bluetooth ........................................................................................................................................................... 17
Instrument accessory products.......................................................................................................................... 18
GEM5000 instrument features .............................................................................................................................. 20
Physical characteristics of the instrument panel ............................................................................................... 20
Analyser features and keys ................................................................................................................................ 21
General operational instructions ........................................................................................................................... 22
Switching the instrument on.............................................................................................................................. 22
Power on self-test.............................................................................................................................................. 22
Switching the analyser off.................................................................................................................................. 23

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Instrument status icons ..................................................................................................................................... 23
Instrument LED power states............................................................................................................................. 24
Changing between parameters.......................................................................................................................... 24
Entering data...................................................................................................................................................... 24
Instrument main gas read screen ...................................................................................................................... 25
Storage............................................................................................................................................................... 26
Battery/charging ................................................................................................................................................ 26
Power supply front and back drawing:............................................................................................................... 27
Cleaning instructions.......................................................................................................................................... 27
Memory ............................................................................................................................................................. 27
Warning and error codes ................................................................................................................................... 28
Remote updates................................................................................................................................................. 28
Menu key ............................................................................................................................................................... 32
Operation settings ................................................................................................................................................. 32
Timers ................................................................................................................................................................ 33
Gas Check........................................................................................................................................................... 33
View data ........................................................................................................................................................... 34
Set alarms .......................................................................................................................................................... 35
Adjust flow fail ................................................................................................................................................... 37
Technician login ................................................................................................................................................. 37
Device settings....................................................................................................................................................... 39
Date and time .................................................................................................................................................... 39
Bluetooth ........................................................................................................................................................... 40
Device information ............................................................................................................................................ 41
Diagnostics......................................................................................................................................................... 42
Navigation (optional) ......................................................................................................................................... 42
User settings .......................................................................................................................................................... 43
Operating language............................................................................................................................................ 43
Units of measurement ....................................................................................................................................... 44
ID selection ........................................................................................................................................................ 45

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Routes................................................................................................................................................................ 47
Adjust backlight.................................................................................................................................................. 47
Adjust volume.................................................................................................................................................... 48
User Prompts ..................................................................................................................................................... 49
Exit menu ........................................................................................................................................................... 49
Taking readings ...................................................................................................................................................... 50
Creating an ID .................................................................................................................................................... 51
Change screen layout......................................................................................................................................... 52
Answering site questions ................................................................................................................................... 52
Answering ID questions...................................................................................................................................... 52
Special action ..................................................................................................................................................... 53
Configuration of the data logging option........................................................................................................... 54
GEM analyser in GA mode ................................................................................................................................. 55
Flow devices....................................................................................................................................................... 55
How to use an anemometer (optional).............................................................................................................. 56
How to use a Pitot tube (optional)..................................................................................................................... 59
How to use an H2S filter (optional).................................................................................................................... 60
How to use a temperature probe (optional)...................................................................................................... 63
How to identify a borehole using the GPS feature (optional) ............................................................................ 64
Taking gas and flow measurement .................................................................................................................... 66
Calibration.............................................................................................................................................................. 68
Calibration introduction..................................................................................................................................... 68
Frequency of calibration –best practice............................................................................................................ 68
Calibration gases................................................................................................................................................ 69
Calibration set-up............................................................................................................................................... 70
Calibration equipment ....................................................................................................................................... 70
Gas analyser....................................................................................................................................................... 71
Calibration processes –best practice ................................................................................................................ 71
Gas check in fresh air ......................................................................................................................................... 73
Calibration –mixtures 1, 2 & 3........................................................................................................................... 74

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Restore to factory .............................................................................................................................................. 75
Calibration history.............................................................................................................................................. 75
Calibration summary.......................................................................................................................................... 75
Problem solving...................................................................................................................................................... 76
Warning and error display ................................................................................................................................. 76
Service.................................................................................................................................................................... 77
Warranty policy...................................................................................................................................................... 78
Important notice to all customers ......................................................................................................................... 79
Appendices –safety instructions ........................................................................................................................... 80
Instructions for safe use –Italian language............................................................................................................ 80
MCERTS.......................................................................................................................................................... 83
Instructions for safe use –German language......................................................................................................... 87
MCERTS.......................................................................................................................................................... 90
Instructions for safe use –French language .......................................................................................................... 94
MCERTS.......................................................................................................................................................... 97
Instructions for safe use –Spanish language ....................................................................................................... 101
MCERTS........................................................................................................................................................ 104
Instructions for safe use –Portuguese langauge ................................................................................................. 108
Instructions for safe use - Chinese language........................................................................................................ 111
Instructions for safe use - Polish language........................................................................................................... 115
Instructions for safe use - Romanian language .................................................................................................... 118
Glossary of terms ................................................................................................................................................. 122

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GEM5000
MANUAL GUIDELINES
Hazard warnings and safety symbols
Information in this manual that may affect the safety of users and others is preceded by this
warning symbol.
Caution - Failure to follow the correct information may result in physical injury which in some cases
could be fatal. If the equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
General product label symbols are listed as follows:
CE conformity-The CE-marking is the
manufacturer's statement to the EU
authorities that the product complies
with all relevant CE-marking directives.
If the CSA mark appears with the
indicator "US" or "NRTL" it means that
the product is certified for the U.S.
market, to the applicable U.S. standards.
VDE mark is a symbol for electrical,
mechanical, thermal, toxic,
radiological and other hazards.
Separate collection, handling and
disposal for waste electrical and
electronic equipment and its
components.
Electric shock warning.
Refer to operators manual.
Double insulated construction - does
not require an Earth.
Specific marking of explosion protection
(ATEX only).
II 2G
Equipment group and category. G =
gases; the type of explosive
atmosphere.
IECEx licenced mark
(IECEx only).
Fuse
Equipment for indoor use only.
Notes
Important/useful information and instructions are shown clearly throughout the manual in a note format. For
example:
Note: For further information please contact Technical Support at Geotech on [phone] or email
[e-mail].

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GEM5000
INTRODUCTION
This manual explains how to use the GEM5000 portable gas analyser. The GEM5000 is easy to use, calibrate and
configure and enables consistent collection of data for improved analysis and accurate reporting, whilst helping
to check the digester process is running efficiently.
The 5000 series gas analysers comply with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
1) This device may not cause harmful interference.
2) This device must accept any interference received, including interference that may cause undesired
operation.
Safety instructions
The 5000 series of gas analysers can be used for measuring gases from landfill sites and other
sources as described in this manual.
The operator may be exposed to harmful gases during the use of the instrument. Inhaling these
gases may be harmful to health and in some cases may be fatal.
It is the responsibility of the user to ensure that he/she is adequately trained in the safety aspects of
the gases being used and appropriate procedures are followed. In particular, where hazardous
gases are being used the gas exhausted from the analyser must be piped to an area where it is safe
to discharge the gas.
Hazardous gas can also be expelled from the instrument when purging with clean air.
The instrument has been designed to be used in explosive atmospheres as defined by the
classification. The instrument can be configured to measure low levels of several gases, but may not
be certified for use in potentially explosive atmospheres of these gases. It is the responsibility of the
operator to determine the protection concept and classification of equipment required for a
particular application and whether these gases create a potentially explosive atmosphere.
Note: Gas analysers are a sensitive piece of scientific equipment, and should be treated as such. If the
equipment is used in a manner not specified by the manufacturer, the protection provided by the instrument
may be impaired.
For ATEX and IECEx the 5000 series of gas analysers are certified to Hazardous Area Classification
II 2G Ex ib IIA T1 Gb (Ta = -10ºC to +50ºC)
It is vital instructions are followed closely. It is the responsibility of the operator to determine the protection
concept and classification required for a particular application.

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(Reference European ATEX directive 2014/34/EU)
The following instructions apply to equipment covered by certificate numbers SIRA 11ATEX2197X and IECEx SIR
11.0089X:
The equipment may be used with flammable gases and vapours with apparatus group IIA and temperature
class T1.
The equipment can contain gas sensing heads for the detection of particular gases. The inclusion of a
sensor does not infer that the equipment is suitable for the use of gases with a temperature class of less
than T1.
The equipment is only certified for use in ambient temperatures in the range -10ºC to +50ºC and should
not be used outside this range.
The equipment must not be used in an atmosphere of greater than 21% oxygen.
Repair of this equipment shall be carried out in accordance with the applicable code of practice.
When used in a hazardous area only use GF5.2 temperature probe (SIRA 11ATEX2197X and IECEx
SIR11.0089X). For connector C, the GF5.4 anemometer (BVS 04ATEXE194) for use with ATEX only. The
analyser should not be connected to any other devices in the hazardous area including the GF-USB lead
(connector A) or GF3.9 battery charger (connector B) supplied with the analyser.
Do not charge, recharge or open in a potentially explosive atmosphere.
In hazardous area only use “Temperature Probe GF5.2” in Connector B.
Connector C (Uo=10V,lo=5mA,Po=50mW,Ci=0,Li=0,Co=100uF,Lo=1000mH),
Connector B (Uo=5V,lo=6mA,Po=7mW,Ci=0,Li=0,Co=100uF,Lo=1000mH)
MAXIMUM NON-HAZARDOUS SUPPLIES:
Connector A - Um=6V Connector B - Um=10.1V
The safe area apparatus that is to be connected to the USB Port shall be a Safety Extra Low Voltage (SELV)
or Protective Extra Low Voltage (PELV) circuit.
Only a Geotechnical Instrument battery pack part number 20087 or 2011113 is permitted as a
replacement. This battery pack shall only be changed in a safe area by Geotech personnel or authorised
distributors.
Only Battery Charger type GF3.9 shall be used to recharge the batteries via Connector ‘B’.
If the equipment is likely to come into contact with aggressive substances, e.g. acidic liquids or gases that
may attack metals, or solvents that may affect polymeric materials, then it is the responsibility of the user
to take suitable precautions, e.g. regular checks as part of routine inspections or establishing from the
material’s data sheet that it is resistant to specific chemicals that prevent it from being adversely affected,
thus ensuring that the type of protection is not compromised.

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GEM5000
The relative pressure range is +/-250 mbar. Note, however, that the input pressure should not exceed +/-
250 mbar relative to atmospheric pressure and the output pressure should not exceed +/- 100 mbar
relative to atmospheric pressure.
For CSA (Canada) the 5000 series of gas analysers are certified to Hazardous Area Classification
CLASS 2258 03 - PROCESS CONTROL EQUIPMENT - Intrinsically Safe and Non-Incendive Systems - For Hazardous
Locations
Ex ib IIA:
Model GA 5000, GEM 5000 and BIOGAS 5000 Methane Detectors; portable, battery powered with non-field-
replaceable Battery Pack P/N 20087 or 2011113; intrinsically safe and providing intrinsically safe circuits (“[ib]”
for Zone 1) to Model GF5.2 Temperature Probe (Connector B) and with entity output parameters as tabulated
below; Temperature Code T1; -10 ºC Tamb. +50ºC.
Connector
Entity Parameters
Uo (V)
Io (mA)
Po (mW)
Co (uF)
Lo (mH)
Ci (uF)
Li (mH)
B
5.0
6
7
100
1000
0
0
C
10.0
5
50
100
1000
0
0
Note: This device has been investigated for electrical safety features only.

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GEM5000
For CSA (USA) the 5000 series of gas analysers are certified to Hazardous Area Classification
CLASS 2258 83 - PROCESS CONTROL EQUIPMENT - Intrinsically Safe and Non-Incendive Systems –For Hazardous
Locations - CERTIFIED TO U.S. STANDARDS
AEx ib IIA:
Model GA 5000, GEM 5000 and BIOGAS 5000 Methane Detectors; portable, battery powered with non-field-
replaceable Battery Pack P/N 20087 or 2011113; intrinsically safe and providing intrinsically safe circuits (“[ib]”
for Zone 1) to Model GF5.2 Temperature Probe (Connector B) and with entity output parameters as tabulated
below; Temperature Code T1; -10 ºC ≤Tamb. ≤ +50ºC.
Connector
Entity Parameters
Uo (V)
Io (mA)
Po (mW)
Co (uF)
Lo (mH)
Ci (uF)
Li (mH)
B
5.0
6
7
100
1000
0
0
C
10.0
5
50
100
1000
0
0
Note: This device has been investigated for electrical safety features only.
MCERTS
MCERTS is the UK Environment Agency's Monitoring Certification Scheme. The scheme provides a framework
within which environmental measurements can be made in accordance with the Agency's quality requirements.
The scheme covers a range of monitoring, sampling and inspection activities.
Note: MCERTS - Cross sensitivity tests using hydrogen sulphide were not carried out on this instrument,
therefore, users should be aware if H2S is present on sites, as there may be an interferential effect.
MCERTS promotes public confidence in monitoring data and provides industry with a proven framework for
choosing monitoring systems and services that meet the Environment Agency's performance requirements.
The Environment Agency has established its Monitoring Certification Scheme (MCERTS) to deliver quality
environmental measurements. The MCERTS product certification scheme provides for the certification of
products according to Environment Agency performance standards, based on relevant CEN, ISO and national
standards.
MCERTS certified instruments have been tested by an independent body to ensure that they meet certain
performance requirements. In addition, the manufacturer of an MCERTS product is regularly audited to ensure
that the performance requirements of the certification are being continually met.
The 5000 series of gas analysers have been certified to Version 3.1 of the ‘Performance Standards for Portable
Emission Monitoring Systems’.

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CIRIA
The CIRIA guideline ‘Assessing the risks posed by hazardous ground gases to buildings’ proposes that gas
concentrations and flow rates should be monitored.
As an example methodology, they suggest using a gas analyser to first measure flow and pressure and then
afterwards to measure gas concentration.
The logging profile option offers frequency of data to be collected within a timed period which, in return,
identifies a gas profile of the sample point being monitored, information about whether the sample point is
performing correctly, when the peaks occur and whether air is drawn in after a certain period. This logging
option is available on firmware software version 1.6.5
Versions of the GA5000 analyser range with internal flow on firmware version 1.6.5 and above have the ability to
take measurements according to the CIRIA guidelines, while still allowing other users to take the measurements
as before.

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EU Declaration of conformity

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THE GEM5000 GAS ANALYSER
The GEM5000
GEM5000 gas analyser
The GEM5000 gas analyser is designed for anaerobic digestion.
Benefits:
Allows balancing of gas extraction site.
Maximise power generation from site.
Field proven.
Standardises monitoring routines.
Easy transfer of data.
GPS for compliance.
Features:
ATEX certified.
MCERTS certified.
H2 compensated CO.
Calculates flow (m3/hr) and calorific value (kW or BTU).
Technician log-in.
Event log.

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Two instruments in one (GA and GEM mode).
Measures static and differential pressure.
Simultaneous display of gases.
Storage of changes in set-up of gas field.
Data logging.
Applications:
Gas extraction fields.
Flare monitoring.
Landfill sites.
GEM5000 standard product
Refrence
A
Hard carry case
D
H2S filter (optional –if the compensated
CO cell is fitted)
B
In-line water trap tubing & filter
E
Safety manual
C
Gas analyser instrument
F
Charger with adapters
A
B
C
D
E
F

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GEM5000
GEM5000 OPTIONAL PRODUCTS AND ACCESSORIES
The GEM5000 gas analyser has a number of optional products for purchase which enhance the usability and
enable further analysis of data and reading information.
Note: For more information on the features listed in this section please contact Sales at Geotech on
[phone] or email [e-mail].
Pitot tube (optional)
The GEM5000 gas analyser enables the use of a pitot tube to aid accurate flow measurement. The pitot tube is
used for gas extraction systems and the pressure readings are taken in mbar. High gas flow is calculated in the
analyser in m3/hr (metres cubed per hour).
Orifice plate (optional)
Geotech recommends the use of orifice plates as good practice when using the GEM5000 gas analyser, enabling
repeatability in flow measurement via a fixed method. Orifice plates are a specialised product and configuration
and Geotech does not currently manufacture or sell spare parts for this product. Please refer to a specialist
supplier if the use of Orifice plates is required.
Temperature probe (optional)
The GEM5000 gas analyser has the facility to automatically display and record the borehole temperature via an
optional temperature probe.
When a temperature probe is fitted the temperature reading will be displayed on the ‘Main Gas Read Screen’
and recorded with all other data.
Note: Temperature probes with an Ex label are part of the GEM5000 Ex certification SIRA 11ATEX2197X and
IECEx SIR11.0089X, and therefore certified for use under the same conditions as the analyser.
Anemometer (optional)
The GEM5000 gas analyser has the facility to automatically display and record high flow via an optional
anemometer probe. It is designed to plug into the instrument and instantly provide a flow indication. An
anemometer probe adds flow measurements to the professional reporting ability of the GEM5000 range along
with gas concentrations, pressure and temperature.
The anemometer has a simple connection, a narrow diameter measurement head (11mm), a wide temperature
operating range (up to 80oC) and indicates flows up to 40 m/sec.
When an anemometer probe is fitted to the analyser the flow will be displayed in the ‘Main Gas Read Screen’
and recorded with all other data.
Flow can be measured in either m/s (gas velocity) or m3/hr (volume flow rate). In order to calculate the volume
flow rate the pipe diameter will need to be entered into the instrument, either manually or via the Gas Analyser
Manager software.

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Note: The anemometer probe is ATEX certified for use in a potentially explosive atmosphere under Ex
certificate BVS 04ATEXE194.
H2S filter (optional)
The GEM5000 gas analyser has the capability to use an H2S filter and is required as standard if the compensated
CO cell is fitted and configured at the time the instrument is manufactured. H2S gas can have a cross-gas effect
on the CO reading. By using a filter, the H2S is removed from the gas sample, therefore providing a more
accurate CO reading.
The filter only needs to be used when you are trying to get rid of any possible cross gas effects H2S might have
on other gases. Do not use the filter on all boreholes.
Gas analyser manager –GAM (optional)
Gas Analyser Manager (GAM) enables the operator to maximise the operation of the gas analyser. It enables
direct communication with the unit, features a simple upload and download facility and is fully compatible with
the latest Microsoft™ operating systems.
Features:
Organisation and transfer of borehole IDs and readings to and from the gas analyser.
Configuration of the gas analyser.
Flexible grouping of the IDs.
Structured organisation of transferred data.
Automatic detection of instrument type and available options.
Secure data mode to prevent tampering.
First time set-up wizard.
Enable flow measurements for GEM5000 gas analysers.
GPS (optional)
An optional GPS feature is available for the GEM5000 gas analyser. It enables the site engineer to automatically
locate borehole IDs using GPS satellite signal from predefined borehole IDs uploaded from Gas Analyser
Manager or set on the analyser when out in the field prior to taking a reading. The GPS reading data is stored for
each measurement reading providing an audit trail confirming that a reading was taken.
Bluetooth
The analysers are fitted with a Bluetooth receiver which enables the operator to download readings and upload
IDs without the need to connect the analyser to a PC via a USB lead.

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Instrument accessory products
Optional accessory and replacement parts must ONLY be purchased for the GEM5000 gas analyser direct from
Geotech or your agent. Please contact sale[email protected] for further details on pricing and how to order.
Description
Order
Code
Hard carry case
GF2.5
Soft carry case
GF5.1
Battery charger and adaptors
GF3.9
Anemometer (ATEX certified)
GF5.4
H2S/Hydrocarbon filters
GA6.4
GA6.5
Temperature probe (ATEX certified)
GF5.2
Check gas regulator and tubing for calibration gas.
Calibration gas canister.
Please contact [e-mail] for gas canister
concentrations
GA6.8
In-line water trap filter & tubing
GF1.8

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Water trap with barbed filters (pack of 10)
Water trap with barbed filters (pack of 30)
GA4.9
GA4.9(30)
Gas ports connectors (pack of 10)
MC10
Sampling tube 5m length flexible PVC tubing
(3/16”id)
GA2.3
Spare window for the soft carry case
GF5.3
Gas Analyser Manager (GAM)
GAM
USB lead
GFUSB

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GEM5000 INSTRUMENT FEATURES
Physical characteristics of the instrument panel
FRONT
REAR
TOP
A
On / Off key
J
Charger/temperature port
B
Backlight key
K
Flow inlet
C
Menu key
L
Gas inlet
D
Assistance key
M
USB port
E
Soft-keys
N
Rear label
F
Enter key
G
Pump key
H
Accessory port
I
Gas outlet
H
I
J
K
L
M
E
F
A
B
C
D
G
N