LANDTEC GEM5000 Operating Manual

Page 1 of 70

GEM5000 Gas Analyzer

Operating Manual

QED Environmental Systems, Inc.

2355 Bishop Circle West Dexter, MI. 48130 Tel: (800) 624-2026 Fax :(734) 995-1170 Email: info@qedenv.com Website: www.landtecna.com

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 2 of 70

Table of contents

1.0 MANUAL GUIDELINES ...................................................................................... 4

1.1 Hazard warnings and safety symbols .................................................................. 4

1.2 Notes ............................................................................................................ 4

2.0 INTRODUCTION ............................................................................................... 5

2.1 Safety instructions........................................................................................... 5

2.2 Instructions for safe use ................................................................................... 6

2.3 MCERTS ......................................................................................................... 8

2.4 CIRIA ............................................................................................................ 8

3.0 THE GEM5000 GAS ANALYSER .......................................................................... 10

3.1 The GEM5000 ............................................................................................... 10

3.2 GEM5000 standard product ............................................................................. 10

4.0 GEM5000 OPTIONAL PRODUCTS AND ACCESSORIES ...................................... 11

4.1 Optional products .......................................................................................... 11

4.1.1 Pitot tube (optional) ................................................................................. 11

4.1.2 Orifice plate (optional) .............................................................................. 11

4.1.3 Temperature probe (optional) .................................................................... 11

4.1.4 Anemometer (optional) ............................................................................. 11

4.1.5 H2S filter (optional) .................................................................................. 12

4.1.6 Gas analyser manager – GAM (optional) ...................................................... 12

4.1.7 GPS (optional) ......................................................................................... 12

4.1.8 Bluetooth ................................................................................................ 12

5.0 GEM5000 INSTRUMENT FEATURES ................................................................. 13

5.1 Physical characteristics of the instrument panel ................................................. 13

5.2 Analyser features and keys ............................................................................. 13

5.3 Instrument connection points .......................................................................... 14

6.0 GENERAL OPERATIONAL INSTRUCTIONS ....................................................... 16

6.1 Switching the instrument on ........................................................................... 16

6.1.1 Power on self-test .................................................................................... 16

6.2 Switching the analyser off .............................................................................. 16

6.3 Instrument status icons .................................................................................. 17

6.4 Instrument LED power states .......................................................................... 18

6.5 Changing between parameters ........................................................................ 18

6.6 Entering data ................................................................................................ 18

6.7 Instrument main gas read screen .................................................................... 19

6.8 Storage ....................................................................................................... 19

6.9 Battery/charging ........................................................................................... 19

6.10 Cleaning instructions ................................................................................... 20

6.11 Memory .................................................................................................... 21

6.12 Warning and error codes ............................................................................. 21

7.0 OPERATOR SETTINGS ..................................................................................... 21

7.1 Menu key ..................................................................................................... 21

7.2 Operation settings ......................................................................................... 22

7.2.1 Timers ...................................................................................................... 22

7.2.2 Gas Check .............................................................................................. 23

7.2.3 View data ............................................................................................... 23

7.2.4 Set alarms .............................................................................................. 24

7.2.5 Adjust flow fail ........................................................................................ 25

7.2.6 Technician login ....................................................................................... 26

7.3 Device settings ............................................................................................. 27

7.3.1 Date and time ......................................................................................... 27

7.3.2 Bluetooth ................................................................................................ 28

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 3 of 70

7.3.3 Device information ................................................................................... 29

7.3.4 Diagnostics ............................................................................................. 29

7.3.5 Navigation (optional) ................................................................................ 30

7.4 User settings ................................................................................................ 31

7.4.1 Operating language .................................................................................. 31

7.4.2 Units of measurement .............................................................................. 32

7.4.3 ID selection ............................................................................................ 33

7.4.4 Routes ................................................................................................. 35

7.4.5 Adjust backlight ....................................................................................... 35

7.4.6 Adjust volume ......................................................................................... 36

7.4.7 User Prompts .......................................................................................... 37

7.5 Exit menu .................................................................................................... 37

8.0 TAKING READINGS ......................................................................................... 38

8.1 Preliminary checks before taking readings (best practice) .................................... 38

8.1.1 Creating an ID ........................................................................................... 39

8.2 Change screen layout ....................................................................................... 40

8.3 Answering site questions ................................................................................ 40

8.4 Answering ID questions .................................................................................... 40

8.5 Special action ............................................................................................... 41

8.5.1 Configuration of the data logging option ......................................................... 42

8.5.2 Profiling option ........................................................................................... 42

8.6 GEM analyser in GA mode .............................................................................. 43

8.7 The gas flow measurement screen ................................................................... 43

8.8 How to use an anemometer (optional) .............................................................. 44

8.9 How to use a pitot tube (optional) ................................................................... 47

8.10 How to use an H2S filter (optional) ................................................................ 48

8.8.1 Cross gas effects on chemical cells ............................................................. 48

8.9.2 Cross-gas effects on methane, carbon dioxide and oxygen ............................. 49

8.11 How to use a temperature probe (optional) .................................................... 51

8.12 How to identify a borehole using the GPS feature (optional) .............................. 52

8.13 Taking gas and flow measurement ................................................................ 55

9.0 CALIBRATION ................................................................................................ 56

9.1 Calibration introduction .................................................................................. 56

9.2 Frequency of calibration – best practice ............................................................ 56

9.3 Calibration gases ........................................................................................... 57

9.4 Calibration set-up .......................................................................................... 57

9.5 Calibration equipment .................................................................................... 58

9.6 Gas analyser ................................................................................................ 59

9.7 Calibration processes – best practice ................................................................ 59

9.7.1 Gas Check in fresh air .............................................................................. 60

9.7.2 Calibration – mixtures 1, 2, & 3 ................................................................. 61

9.8 Restore to factory ....................................................................................... 62

9.9 Calibration history ......................................................................................... 62

9.10 Calibration summary ................................................................................... 62

10.0 PROBLEM SOLVING ..................................................................................... 63

11.0 WARNING AND ERROR DISPLAY.................................................................. 63

12.0 SERVICE ...................................................................................................... 64

13.0 WARRANTY POLICY ..................................................................................... 65

14.0 GLOSSARY OF TERMS .................................................................................. 73

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 4 of 70

1.0 Manual guidelines

1.1 Hazard warnings and safety symbols

Warning

Information in this manual that may affect the safety of users

and others is preceded by the 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.

1.2 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 (800) 968-2026 or

email landtec_support@qedenv.com

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 5 of 70

2.0 Introduction

This manual explains how to use the GEM5000 landfill gas analyzer. The GEM5000 has additional functionality to the GA5000 gas analyzer. The GA5000 measures gas concentrations only, whereas the GEM5000 measures flow and gas concentrations. The GEM5000 measures flow and calculates the calorific values of the gas as well as being a useful tool for balancing the gas field. The GEM5000 gas analyzer may be used to monitor, calculate, adjust and record the flow at each monitoring point.

This instrument may also be used in GA5000 mode of operation if required. The operator may change the analyzer between a gas extraction monitor (a GEM5000 gas analyzer) or a landfill gas analyzer (a GA5000 gas analyzer). The mode of operation can be changed from the ‘Special Action’ menu. Please refer to section ‘8.0 – Taking Readings’ for further instruction.

The 5000 series of gas analyzers complies 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.

2.1 Safety instructions

Warning

The 5000 series of gas analyzers 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 analyzer 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 analyzers 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.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 6 of 70

2.2 Instructions for safe use

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.

(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 analyzer.

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 is not field replaceable and shall only be changed in a safe area by QED personnel.

 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

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 7 of 70

from being adversely affected, thus ensuring that the type of protection is not compromised.

 The relative pressure range is +/-500 mbar. Note, however, that the input pressure

should not exceed +/- 500 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)

5.0 6 7

100

1000

10.0

100

1000

 Note: This device has been investigated for electrical safety features only.

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:

Connector

Entity Parameters

Uo (V)

Io (mA)

Po (mW)

Co (uF)

Lo (mH)

Ci (uF)

Li (mH)

5.0 6 7

100

1000

0 0 C

10.0

100

1000

 Note: This device has been investigated for electrical safety features only.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 8 of 70

2.3 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.

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 analyzers have been certified to Version 3.1 of the ‘Performance Standards for Portable Emission Monitoring Systems’.

2.4 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 analyzer 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.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 9 of 70

3.0 The GEM5000 Gas Analyzer

3.1 The GEM5000

The GEM5000 gas analyzer is designed to monitor landfill gas extraction systems.

Benefits:

 Allows balancing of gas extraction site.  Maximize power generation from site.  Field proven.  Standardizes monitoring routines.  Easy transfer of data.  GPS for compliance.

Features:

 ATEX certified.  MCERTS certified.  H

compensated CO.

 Calculates flow (m

/hr) and calorific value (kW or BTU).

 Technician log-in.  Event log.  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.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 10 of 70

3.2 GEM5000 standard product

Reference:

Hard carry case

In-line water trap tubing & filter

Gas analyser instrument

H2S filter (optional – if the compensated CO cell is fitted)

5000 series safety manual

Mains battery charger and adaptors:

- UK

- Europe

- US

- Australia

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 11 of 70

4.0 GEM5000 Optional Products and Accessories

4.1 Optional products

The GEM5000 gas analyzer 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

(800) 624-2026 or email info@qedenv.com

4.1.1 Pitot tube (optional)

The GEM5000 gas analyzer 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 analyzer in m3/hr (metres cubed per hour).

4.1.2 Orifice plate (optional)

QED recommends the use of orifice plates as good practice when using the GEM5000 gas analyzer, enabling repeatability in flow measurement via a fixed method. Contact Sales at (800) 624-2026 or email info@qedenv.com if the use of Orifice plates is required.

4.1.3 Temperature probe (optional)

The GEM5000 gas analyzer 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 analyzer.

4.1.4 Anemometer (optional)

The GEM5000 gas analyzer 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 analyzer 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 Landtec Systems Gas Analyser Manager, (LSGAM), software.

 Note: The anemometer probe is ATEX certified for use in a potentially explosive

atmosphere under Ex certificate BVS 04ATEXE194.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 12 of 70

4.1.5 H2S filter (optional)

The GEM5000 gas analyzer 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.

4.1.6 Landtec Systems Gas Analyzer Manager – LSGAM (optional)

Landtec Systems Gas Analyzer Manager (LSGAM) enables the operator to maximize the operation of the gas analyzer. 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:

 Organization and transfer of borehole IDs and readings to and from the gas

analyzer.

 Configuration of the gas analyzer.  Flexible grouping of the IDs.  Structured organization 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 analyzers.

4.1.7 GPS (optional)

An optional GPS feature is available for the GEM5000 gas analyzer. It enables the site engineer to automatically locate borehole IDs using GPS satellite signal from predefined borehole IDs uploaded from LSGAM or set on the analyzer 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.

4.1.8 Bluetooth

The analyzers are fitted with a Bluetooth receiver which enables the operator to download readings and upload IDs without the need to connect the analyzer to a PC via a USB cable.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 13 of 70

5.0 GEM5000 Instrument Features

5.1 Physical characteristics of the instrument panel

Front view: Reference:

Back view: Reference:

Main Gas Read Screen

Soft-keys

Backlight Key

Menu Key

Pump key

LED Light

On/Off Key

Assistance key

Enter Key

Scroll up key

Scroll down key L

Key 0 – Space key

Model Number

Serial number

Part number

Certificate number Q

Recalibrated date

A B C

I K L

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 14 of 70

5.2 Analyzer features and keys

Main Gas Read Screen

Start and end screen when using the instrument.

Soft-keys

The function of the three ‘soft-keys’ on the front of the instrument panel is determined by menu options taken. Functions vary from screen to screen.

Backlight key

Enables the operator to turn the backlight on/off on the analyzer display panel.

Menu key

Press the ‘Menu’ key to view and maintain User,

Device and Operation settings.

Pump key

Press the ‘Pump’ key to start or stop the pump.

LED light

LED power light is visible on the front of the analyzer when the instrument is powered on.

On/Off key

Press the ‘On/Off’ key for 2 seconds to switch the

instrument on and off.

H Assistance key

Press for on-screen assistance and help.

Enter key

Use to accept changes, options, user inputted answers etc.

Key 2 – Page Up

Also ‘Key 2’. Press scroll up to view further

information on the instrument screen.

Key 8 – Page down

Also ‘Key 8’. Enables the operator to scroll down

to display more information.

Key 0 – Space key

Also ‘Key 0’. Press to enter a space when entering

text on the instrument screen. M

Model Number

Instrument model type identification.

N Serial Number

Unique identification for the instrument. Verification of the serial number will be required if Technical Support assistance is needed. O

Part Number

Manufacturer’s part number. P

Certification Number

Displays instrument certification information.

Q Recalibrated Date

The date displayed is the date the instrument is due to be calibrated.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 15 of 70

5.3 Instrument connection points

Top view:

Ref:

Connection Point:

Function:

Connector A

Attach the USB cable for PC-to-analyzer connectivity.

Inlet Port & Static Pressure Port (White port)

Attach the sample tube to take a gas sample. Also used to measure the static pressure.

Differential Pressure Port (Blue port)

Attach the sample tube to measure differential pressure.

Connector B

Attach the temperature probe and also used to attach the mains charger to the analyzer for charging.

Gas Outlet Port (Yellow port)

The gas outlet port is the point at which the sample gas is expelled. Tubing may also be attached to the port. F

Connector C

Attach the anemometer.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 16 of 70

6.0 General Operational Instructions

6.1 Switching the instrument on

1) To switch on the analyzer, press and hold the ‘On/Off’ key. The Landtec logo will

display followed by the instrument warm up.

2) Following the instrument warm up, the ‘Date and Time’ screen is displayed

prompting the technician to set the date and time and required format.

3) When complete, select the soft-key to ‘Exit’ and the ‘Power On Self-test’ screen is

displayed followed by instrument status. Instrument status displays the instruments service due date, serial number, options, service scheme and software version. Text will also display stating ‘Self-test complete’.

4) Select the soft-key ‘Next’ to move onto the next screen and the ‘Technician Login’

screen is displayed.

5) Use the cursor keys to move through the list of ID’s. Select either the required

‘Technician ID’ from the list followed by the soft-key ‘Accept’, or select ‘Default’’ followed by the soft-key ‘Accept’ to continue to the ‘Main Gas Read Screen’.

 Note: The selected technician ID is displayed at the top left corner of the Main

Gas Read Screen.

6.1.1 Power on self-test

When switched on, the read-out will perform a pre-determined self-test sequence. During this time many of the analyzer’s functions are tested, including:

 General operation  Gas flow measurement  Calibration  Battery charge level

During the self-test the following information is also displayed:

 Manufacturer’s service due date  The last gas check date  Software version programmed  Date format  Serial number  Operating language  The currently enabled sales option

 Note: The self-test should only be done with the analyzer sampling fresh air.

6.2 Switching the instrument off

1) To switch off the analyzer, press and hold the ‘On/Off’ key, at which point a clean air

purge will be carried out and the instrument will then switch off.

2) If for any reason the analyzer ‘locks up’ and will not switch off in this manner, press

and hold the ‘On/Off’ key for 15 seconds; this will force the instrument to switch off.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 17 of 70

6.3 Instrument status icons

The following icons may be displayed on the instrument screen:

Icon

Description

Icon

Description

Battery charge state

Gives the operator an estimation of the battery charge state. For example 100% gives about 8 hours use in the field and 50% would mean that there is approximately 4 hours battery life remaining.

Battery charge state

Indicates less than 2 hours of charge remaining.

Pump status

This icon is displayed along with a counter showing the pump runtime. This counts down where the operator has specified the pump runtime; if not it counts up; the icon turns red when stalled.

Pump stalled

This icon is displayed when the pump stalls. The instrument’s gas inlet (or outlet) may be blocked. This warning is most commonly caused by a waterlogged or dirty sample filter. Change the sample filter and check for obvious blockages in the sample tubes. Alternatively, a small amount of adjustment can be made to the low flow detection point to compensate for minor changes in the performance of the pump fitted to the instrument.

GPS signal strength

This icon shows the signal strength the analyzer’s GPS module is able to provide. Full, okay and fair strength respectively.

GPS failure

The GPS was unable to get a line of sight lock on enough satellites. Or, it may be that it hasn’t had time to get a lock.

This indicates when Bluetooth has been enabled. The color changes from gray to blue when connected.

Language

This icon indicates the currently selected operating language. This can be changed via the main menu.

Data logging

This icon indicates that the data logging feature is in operation.

Service overdue

This icon indicates that the analyzer is overdue for service

Legacy mode

This icon indicates that the analyzer is in legacy mode and hence is ready to connect to a PC.

USB disabled

This icon indicates that the analyzer has reached a battery critical state, and hence has turned off its USB connectivity.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 18 of 70

6.4 Instrument LED power states

When the instrument is powered on a LED power light is visible on the front of the analyzer, located above the ‘On/Off’ key. The following LED power light states are as follows:

Steady yellow

Unit turning on. This will extinguish when software has loaded correctly.

Flashing (rapid)

Unit is powering off.

Flashing (slow)

Power off is being delayed for purge/shutdown handling.

Flashing yellow

Unit is turning off due to power button being pressed.

Flashing red

Unit is turning off due to critically low battery.

 Note: Pressing and holding the power button for ~20s resets the analyser.

6.5 Changing between parameters

By default, the instrument displays the ‘Main Gas Read Screen’ (for gas measurement). The instrument will return to this screen after power on or when returning from the menus. The ‘Scroll’ keys can be used to switch to another measurement screen.

6.6 Entering data

During normal operation the operator may be prompted to enter data or information via the keypad, i.e. entering an ID code or setting an alarm level.

When entering data into the instrument all fields are fixed format and are populated from the left.

Text:

Entering text uses similar multi-tap functionality as a mobile phone. Key the numeric/alpha key pad the required number of times to select the appropriate letter. To key numeric data continue to press the numeric/alpha key until the required number is displayed.

Numeric data:

To enter a new date 09/15/116 the operator would type in 091516 using the numeric keypad in the following sequence:-

* 0_/__/__ * 09/__/__ * 09/1_/__ * 09/15/__ * 09/15/1_ * 09/15/16

Press the ‘Enter’ key to confirm/accept data keyed.

Any mistakes can be corrected using the soft-key ‘Delete’ which will delete the last digit

typed. Alternatively, the sequence can be retyped before the ‘Enter’ key is pressed and

the existing numbers will be pushed off the screen.

 Note: The instrument will not allow invalid data to be entered; this should be deleted

and re-entered.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 19 of 70

6.7 Instrument main gas read screen

The ‘Main Gas Read Screen’ is considered to be the normal operating screen and all

operations are carried out from this starting point.

The actual data shown on this display will depend on the version of the instrument and the options that have been selected.

Main Gas Read Screen

You can also press key 2 and access a zoomed version of the main read screen, once you have entered this mode, simply use keys 4 and 6 to switch between the gases and pressures. Examples of both screens can be seen below:

Zoomed version

6.8 Storage

The analyzer should not be exposed to extreme temperature. For example, do not keep the analyzer in a hot car. When not in use, analyzers should be kept in a clean, dry and warm environment, such as an office. Protect the analyzer with either the soft carry case or store in the hard carry case provided with the instrument.

The instrument should be discharged and fully charged at least once every four weeks, regardless of indicated charge state.

6.9 Battery/charging

The battery used in the 5000 series of gas analyzers is nickel metal hydride and manufactured as a pack from six individual cells. This type of battery is not so susceptible to the top-off charging ‘memory effects’ as nickel cadmium batteries, although it is not recommended that the unit is given small top-off charges.

 Note: To reach optimum charge, it is recommended that the instrument is

switched off when being charged and remains switched off during the charging process.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 20 of 70

A full charge will take approximately 4 hours from a fully discharged battery.

Warning

The battery charger is NOT covered by the Ex certification. The battery must be charged only in a safe area.

The battery charger is intelligent and will indicate when the unit is charging and charged.

The instrument must be charged ONLY using the battery charger supplied with the instrument. The battery charger supplied is intended for indoor use only. Please ensure adequate ventilation while charging. Typically, a fully charged battery will last 7-8 hours. A quick 30 minute charge can be used to give approximately one hours use in the field but this may shorten the battery life. Temperature can dramatically affect the battery life; please take this into account when estimating battery life.

 Note: Connect the charger to the mains attaching the appropriate adaptor.

Power supply front and back drawing:

Charger: Input voltage: 100-240V AC +/- 10% Input frequency: 50-60Hz +/- 10% Input current: 0.4A@100VAC .. 0.2A@240VAC

Output voltage: 10.1VDC max Output current: 1.5A max

 Note: This charger has been internally restricted to 1.5A

6.10 Cleaning instructions

Do NOT use any cleaning agents to clean the analyzer or battery charger as they may

have an adverse effect on the safe use of these devices.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 21 of 70

6.11 Memory

The analyzer's memory is stored in a readings and configuration database. The analyzer

will prompt when its memory is full, and you will not be able to store any further readings.

Please download your readings via LSGAM or the Basic Download Software and then clear

the memory.

 Note: The analyzer should never be stored for prolonged periods with valuable data in

its memory. It is advisable to download all readings to LSGAM at the end of each day’s monitoring. To clear the memory, please refer to the LSGAM operating manual.

6.12 Warning and error codes

When switched on the instrument will perform a predetermined self-test sequence taking

approximately ten seconds. During this time many of the instrument’s working parameters

and settings are checked. If any operational parameters are out of specification or if the

pre-programmed recommended calibration/service date has passed, errors or warnings

may be displayed.

 Note: For further information please refer to section ‘10.0 Problem Solving’.

7.0 Operator Settings

7.1 Menu key

The ‘Menu’ key enables the operator to select options to set up specific parameters and perform operational tasks prior to sample readings being taken or to view data and information stored in the instrument.

1) Select the ‘Menu’ key on the front of the analyzer and the following screen is

displayed:

2) Press the relevant numeric key on the analyzer keypad to select the required option.

3) To exit this menu, select the soft-key ‘Exit’ on the front of the analyzer and the

operator is returned to Main Gas Read Screen.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 22 of 70

7.2 Operation settings

To access the ‘Operation settings’ menu, select the ‘Menu’ key on the front of the analyzer.

The following menu is displayed:

7.2.1 Timers

The timers function enables the operator to set standard purge times and set auto-power off if the unit is untouched for the period of time specified.

1) Select ‘Key 1 – Timers’ and the following screen is displayed:

1) Select ‘Key 1’ to edit the purge time. Enter the ‘Pump Running Time’ in seconds;

this is the length of time you wish to run the pump to draw the sample, e.g. key in 030 then press the ‘Enter’ key to accept.

2) Select ‘Key 2’ to edit the auto power off time. Enter the ‘Auto power off’ in

minutes; the instrument will automatically power off to preserve the battery life after the specified time if no activity has occurred on the instrument. Press the ‘Enter’ key to accept.

3) Select the soft-key ‘Exit’ key to exit the screen and return to the ‘Operation

settings’ menu.

 Note: Setting the purge time and auto power off functions to zero, disables the

option. It is not recommended to reduce the purge time to below 30 seconds.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 23 of 70

7.2.2 Gas Check

This option displays the ‘Gas Check’ menu and enables the operator to zero

and span the gas channels on the instrument. Historical/previous gas checks data can also be viewed and factory settings can be restored.

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft key to display ‘Operation Settings’.

2) Select ‘Key 2 – Gas Check’ and the following menu is displayed:

3) For more information about the Gas Check Menu please refer to section 9.0 –

Calibration.

4) Select soft-key ‘Exit’ to exit operation settings and return to the main screen.

7.2.3 View data

This option enables the operator to view the readings collected and stored on the instrument. Readings many be downloaded to the optional LSGAM software if further analysis is required.

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft-key to display ‘Operation Settings’.

2) Select ‘Key 3 – View Data’ and the following screen is displayed:

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 24 of 70

3) Toggle through the reading by selecting ‘Key 4 – Scroll left’ and ‘Key 6 – Scroll right’

on the analyzer. Select ‘Key 2 – Page up’ and ‘Key 8 – Page down’ to page through the auxiliary channels listed.

4) Select the soft-key ‘Filter’ to filter the data by sample point ID, or specify before or

after date. Press the soft-key ‘Exit’ to exit the filter menu and return to the ‘View Data’ screen.

5) Select the soft-key ‘Delete’ followed by the appropriate soft-key to delete a single

reading or all filtered readings. Press soft-key ‘Cancel’ to cancel the deletion request.

6) Select the soft-key ‘Exit’ to exit the view data screen.

7.2.4 Set alarms

This option enables the operator to define the conditions for which an alarm/target will be triggered. These conditions apply to the general operation of the instrument and are not ID specific. A summary of the alarm settings can be found in ‘Key 3 – Summary’.

Types of alarms Common Alarms – Are non-ID specific alarms which apply to all the readings taken with the analyzer.

ID specific alarms – Are ID specific, i.e. they will only trigger when a certain Id is being used.

Tuning/targets – You can also set targets for your gas channels; these will highlight gas channels green as oppose to when they alarm (yellow). These can be common or ID specific.

Setting up alarms/targets

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft key to display ‘Operation Settings’.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 25 of 70

2) Select ‘Key 4 – Set Alarms’ and the following menu is displayed:

3) Select the corresponding key to select the gas for which you wish to set an

alarm/target trigger for, followed by ‘Key 1’ to change the trigger condition of an

alarm.

4) To manually adjust the alarm/target set press (<) ‘Key 4 – Scroll left’ or ‘Key 6 –

Scroll right’ (>) and enter the trigger value. Once you are happy, press the middle soft key for ‘save’.

5) For pressure, temperature and flow alarms, press the left soft key for ‘Secondary’ and

then select the corresponding key to select the channel for which you wish to set an

alarm trigger for, followed by ‘Key 1’ to change the trigger condition of an alarm/target. Once you are happy, press the middle soft key for ‘save’.

6) To disable all alarm settings select key 0 – ‘Disable All’

 Note: ID specific alarms cannot be added/edited on the analyzer, to add/edit

ID specific alarms, please use the optional LSGAM Software.

7.2.5 Adjust flow fail

This option enables the operator to adjust the flow fail tolerance of the instrument, i.e. the operator can adjust the sensitivity for when the pump will stop operating on the presence of a blockage or low flow.

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft-key to display ‘Operation Settings’.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 26 of 70

2) Select ‘Key 5 – Adjust Flow Fail’ and the following screen is displayed:

3) Manual adjustment of the flow fail is available via this option and can be carried out

with use of ‘Key 4 – Scroll left’ () less sensitive and ‘Key 6 – Scroll right’ (>) more sensitive.

4) Select the soft-key ‘Save’ to store the setting or select soft-key ‘Exit’ to exit the screen

without saving the change.

5) The operator will return to the ‘Operation settings’ menu.

 Note: The default setting displays the bar in the centre. BEFORE altering this

setting, please contact Technical Support at (800) 968-2026 or email

landtec_support@qedenv.com

7.2.6 Technician login

This option enables the operator to select or change a pre-defined technician login and all subsequent readings will be tagged with this Technician Login ID. The technician ID must already have been created using the LSGAM software and uploaded to the instrument.

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft key to display ‘User Settings’.

2) Select ‘Key 6 – Technician login’ and the following screen is displayed:

3) Use the cursor keys to move throughout the list of IDs displayed; select the ‘Enter’

key to select choice of ID, default if no IDs are listed or soft-key ‘Skip’ to skip the selection.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 27 of 70

4) The operator will return to the ‘User settings’ menu.

 Note: If no technicians are loaded via LSGAM, this section is skipped during

start up and the ‘Technician ID’ icon is removed from the menu.

7.3 Device settings

To access the ‘Device Settings’ menu, select the ‘Menu’ key on the front of the analyzer to

display the ‘Operating Settings’ menu followed by the soft-key to display ‘Device Settings’

menu. The following menu is displayed:

7.3.1 Date and time

This option enables the operator to set the instrument date and time or to receive and update the settings automatically from satellite signal.

1) Select the ‘Menu’ key on the front of the analyzer to display the ‘Device Settings’

menu followed by ‘Key 1 – Date and Time’ and the following screen is displayed:

2) Select ‘Key 1 – Set Date’ and key in the required date. Type the date using the

numeric keypad. Press the soft-key ‘Date Format’ to toggle and select the required

date format i.e. dd/mm/yy. Press the ‘Enter’ key to confirm and update the date

setting.

3) Select ‘Key 2 – Set Time’ and key in the required time (hh:mm). Type the time

using the numeric keypad and press the ‘Enter’ key to confirm the update.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 28 of 70

4) The operator may also change the default time zone. Selecting the ‘Key 4 Scroll-

left’ or ‘Key 6 – Scroll right’ to move through the different time zones. Press the ‘Enter’ key to confirm your default setting.

5) Select ‘Key 3’ to toggle between ‘Manual Update’ and ‘Automatic Update’ in order to

choose how the date and time is set if updating from satellite signal.

Manual

Used to manually obtain and update the date and time from the satellite signal when requested. Select soft-key ‘Set now’ to set date and time from satellite when available.

Automatic

Used to automatically update the date and time received from the satellite signal when available. This option is only available when the GPS option is fitted to the analyser at the time of manufacture.

6) Select the soft-key ‘Exit’ to exit and return to the ‘Device Settings’ menu.

7.3.2 Bluetooth

This option enables the operator to set and utilize Bluetooth technology. This may be useful when downloading gas readings from the analyzer to the PC instead of connecting the analyzer to a PC via a USB cable. Bluetooth may also be used to transfer Site IDs to other 5000 series gas analyzers if required.

1) Select the ‘Menu’ key on the front of the analyzer to display the ‘Device Settings’

menu.

2) Select ‘Key 2 – Bluetooth’ and the following screen is displayed:

3) Enter the ‘Pairing PIN’ value when prompted by your computer for the device’s

pairing code.

4) Select soft-key ‘Exit’ to exit the screen and return to the ‘Device Settings’ menu.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 29 of 70

7.3.3 Device information

This option displays default instrument information and settings such as serial number, service due date, last zero calibration date and last span calibration date.

1) Select the ‘Menu’ key on the front of the analyser to display the ‘Device Settings’

menu.

2) Select ‘Key 3 – Device Information’ and the following screen is displayed:

3) The information displayed on this screen is informational only and cannot be edited

by the operator. The operator may be asked serial number, service due date and version number information when contacting QED.

 Note: The communications setting ‘Legacy’ mode is for use with GAM >=v1.5.

GA5K mode is reserved for future applications – use with 5000 series updater tool

4) Select soft-key ‘Exit’ to exit the screen and return to the ‘Device Settings’ menu.

7.3.4 Diagnostics

This option enables the Technical Support Team to identify and resolve issues with the instrument and settings. If required, the operator may be asked to confirm the diagnostics displayed.

1) Select the ‘Menu’ key on the front of the analyser to display the ‘Device Settings’

menu.

2) Select ‘Key 4 – Diagnostics’ and the following screen is displayed:

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 30 of 70

3) Select soft-key ‘Next’ to display the next screen, ‘Previous’ to return to the previous

screen, or select soft-key ‘Exit’ to exit this screen and return to the ‘Device Settings’ menu.

 Note: For further information please contact Technical Support at (800) 968-

2026 or email landtec_support@qedenv.com

7.3.5 Navigation (optional)

This option enables the operator to switch the ‘GPS Navigation’

functionality on or off. (This is optional and dependent upon purchasing the navigation option).

1) Select the ‘Menu’ key and the ‘Device Settings’ menu is displayed.

2) Select ‘Key 5 – Navigation On’ to switch on the GPS navigation functionality or ‘Key

5 – Navigation Off’ to switch the GPS navigation functionality off.

 Note: For further information please refer to section ‘8.0 – Taking Readings’.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 31 of 70

7.4 User settings

To access the ‘User settings’ menu, select the ‘Menu’ key on the front of the analyzer to

display the ‘Operating Settings’ menu followed by the soft-key to display ‘User Settings’

menu. The following menu is displayed:

To exit the user settings menu select the soft-key ‘Exit’.

7.4.1 Operating language

This option enables the operator to specify the operating language displayed for the instrument.

1) Select ‘Key 1 – Operating Language’ and the following screen is displayed:

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 32 of 70

Set the required language for the gas analyser by selecting the appropriate function key. Choose from, on the first page:

Key 1

English

Key 2

Spanish

Key 3

French

Key 4

German

Key 5

Italian

Key 6

Portuguese

Use the soft-keys to move to the next page for further language options, including simplified Chinese

2) To exit this option, select the soft-key ‘Exit’ and the operator is returned to the

‘User Settings’ menu.

7.4.2 Units of measurement

This option enables the operator to specify the default units of measurement for the instrument.

1) Select ‘Key 2 – Units of Measurement’ and the following screen is displayed:

2) To set the required units of measurement toggle and choose from the following:

Key 1

Temperature

Key 2

Flow

scfm m3/hr

Key 3

Measurement

Inches Millimetres

Key 4

Pressure

mb “H2O

Key 5

Balance

Balance Residual N2

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 33 of 70

3) Select soft-key ‘Exit’ to exit this screen and return to the ‘User Settings’ menu.

7.4.3 ID selection

The ID selection screen allows the operator to scroll through all IDs, including those uploaded from LSGAM and added directly onto the instrument, and then make a selection. Detailed information regarding the currently selected ID, such as flow device type and pump runtime,

are displayed below:-

By selecting ‘Key 5’ the operator can toggle between showing 30 IDs and showing 5 IDs with

more detailed information relating to the chosen ID.

The technician can scroll between the IDs using the following keys on the instrument keypad:

Two (2) and eight (8) move the selection up/down Four (4) and six (6) move the selection left/right on the list view One (1) and three (3) move the selection left/right a page in the list view only Seven (7) and nine (9) move the selection to first/last ID

Five (5) toggles between the 'ID with information' and 'ID list' Return/enter key selects the desired ID and proceeds to the navigation or reading screen.

If there are no IDs present the technician can either add a new ID or press the enter key on the instrument keypad to return to the previous screen.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 34 of 70

Soft keys:

Left - Select 'No ID' and go to the purge/reading screen. Center - Enabled when there is a list of IDs, allowing the technician to dynamically

filter the IDs displayed in the list.

Right - Allows the technician to add a new ID to the instrument 'in the field'.

 Note: If your analyzer has firmware version v1.12 or greater, used IDs will have a

strikethrough.

Changing the sort order

By default the IDs are sorted in the order in which they were transferred to the instrument. To change the sort order between unsorted, sort by name or sorted by distance to travel press Key 0.

Sorted by original order (not sorted)

Sorted alphabetically

Sorted by distance to travel

 Note: Only available when GPS is enabled

For analyzers with firmware v1.12 and above:

1) Press the menu key

2) Press the middle soft key for ‘User Settings’

3) Press key 3 – ‘ID options a. Key 1 to change the sort order

b. Key 2 to change how the IDs are displayed c. Key 3 to clear the line through on the current ID being used d. Key 4 to remove the line through on all IDs

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 35 of 70

7.4.4 Routes

Using the optional LSGAM Software, you can upload a route. This is a predefined list of IDs that you can go through in an order. This feature is useful if you have a certain order to complete your IDS in.

Furthermore if your GA5000 has v1.12 or higher firmware it will strike through your IDs once you have used them.

 Note: If the analyzer is set to “route mode” (v1.12 and above), the filter box

will no longer be there, as you cannot filter in this mode. It will be replaced by “Route” and the route name.

7.4.5 Adjust backlight

This option enables the operator to adjust the backlight (brightness). Having this set to a darker setting will help preserve the battery power

1) Select ‘Key 4 – Adjust Backlight’ and the following screen is displayed:

2) Keys 4 and 6 can be used to adjust the brightness of the display screen.

‘Manual’ disables the backlight timeout.

3) Select the soft-key ‘Save’ to store the setting or select soft-key ‘Exit’ to exit the screen

without saving the change.

4) The operator will return to the ‘User settings’ menu.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 36 of 70

Selecting ‘Key 1’ allows the operator to configure the dimmer settings from ‘Auto Dim’ to ‘Auto Off’ in order to help preserve power consumption when data logging.

This icon represents ‘Auto Dim’ – this enables the backlight idle timeout, which means

the backlight will go dim after a specified period of inactivity. This will help save battery life.

This icon represents ‘Auto Off’ – this switches the backlight off, saving power.

 Note: The manually set contrast setting is retained when the read-out is

switched off and may require resetting when next switched on.

7.4.6 Adjust volume

This option enables the operator to adjust the volume for the internal speaker, for example the alarm tone. A lower setting will help preserve the battery power.

1) Select the ‘Menu’ button on the front of the analyzer to display the ‘Device Settings’

menu. Press the soft-key to display ‘User Settings’.

2) Select ‘Key 5 – Adjust Volume’ and the following screen is displayed:

3) Manual adjustment of the volume is available via this option and can be carried out

with use of ‘Key 4 - Scroll left’ () volume down and ‘Key 6 - Scroll right’ (>) volume up.

4) Select the soft-key ‘Save’ to store the setting or select soft-key ‘Exit’ to exit the screen

without saving the change.

5) The operator will return to the ‘User settings’ menu.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 37 of 70

7.4.7 User Prompts

This option enables the operator to either turn on or off the context-sensitive user prompts which are displayed during the gas sample process. The analyzer will have the user prompts on when it is first used, so if they are no required

they can be switched off by selecting soft-key ‘6’ and this will now be its default setting. Prompts can be switched back on at any time by returning to this menu and selecting soft-key ‘6’.

7.5 Exit menu

1) Press the ‘Menu’ button on the front of the analyzer to exit settings.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 38 of 70

8.0 Taking Readings

8.1 Preliminary checks before taking readings (best practice)

Prior to use, it is good practice to ensure that:

Step 1 If using LSGAM - all necessary ID

codes and information have been uploaded from LSGAM to the analyzer. Please see section 8.1.1 for more information on this.

Step 2 Check the ‘Mode of Operation’ is

correct. Choose either GEM5000 for gas extraction monitoring analyzer or GA5000 for landfill gas

analyzer. Change using ‘Special Actions’.

Step 3 The instrument has the correct

time and date set.

Step 4 The water trap filter is fitted and

is clean and dry.

Step 5 The battery has a good charge

(minimum 25% charge, even if only a few readings are required).

Step 6 The gas channels have been

zeroed, without gas concentration present.

Step 7 If necessary check the span

calibration with a known concentration calibration gas.

Step 8 Take readings.

Start

ID codes and

information

uploaded

Battery has

good charge

Check span

calibration

Take readings

Step 1

Step 2

Step 6

Analyser

has correct time

and date set

Check mode of

operation is correct

(GEM /GA)

Water trap filter is

clean and dry

Gases

zeroed

Step 3

Step 4

Step 5

Step 7

Step 8

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 39 of 70

Warning

Inhaling hydrogen sulphide gas (H2S) or other harmful gases can cause death. It is the responsibility of the user to ensure that he/she is adequately trained in the safety aspects of using H2S and other harmful gases. 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.

Good practice

 Travel to site with the gas analyzer in the vehicle's interior - not in the trunk or truck

bed, where it may be subjected to extremes of temperature and possible shock damage. Do not place the gas analyzer against anything hot (e.g. gas extraction pipe, car body or in an unattended car during the summer) as this will cause a temperature increase in the gas analyzer and may cause erroneous readings.

 When moving around a site, protect the gas analyzer from strong direct sunlight and

heavy rain.

 Always use the water trap! If the water trap becomes flooded, change the filter and

ensure all tubes are clear of moisture before re-use.

 Note: If the exhaust of a 5000 series gas analyzer is connected to a

pressurized system then this results in a flow of gas out of the inlet flow port.

8.1.1 Creating an ID

There are two different methods to creating an ID, either via LSGAM or via the instrument.

If created on the analyzer, you can only fill out basic information, such as ID code, description and ID type. Whereas on LSGAM, you can assign site and ID questions (please see below), assign flow devices, input GPS coordiantes etc.

To create an ID on LSGAM please consult the LSGAM operating manual. To create an ID on the instrument:

1) Press the left blue arrow key for ‘Next ID’

2) Press the right blue arrow key for ‘Add’

3) Input an ID code using the keypad

4) Press enter

5) Using the corresponding number to input different properties of the ID

6) Once you are happy, press the middle key for ‘add’

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 40 of 70

8.2 Change screen layout

Use key 2 to toggle between 2 different ways of viewing the gas reading screen:

Default view

You can use key 4 and key 6 to switch between the gases page and the pressure & flow page. This feature is only available on analyzers running on firmware version 1.11 or later.

8.3 Answering site questions

Prior to taking the readings at a particular site, the site questions should be populated, this is only necessary when using site questions, if not, please proceed with the reading as

normal. This is accessed via the ‘Special Action’ menu. The answers to these questions

are then stored and appended to each reading stored thereafter, until the site questions are updated for another site. You will need LSGAM software to create site questions and if you are using LSGAM, this data will be uploaded to LSGAM along with the reading data.

8.4 Answering ID questions

Prior to, or after, you have taken the reading, the ID questions should be populated, this is only necessary when using ID questions, if not, please proceed with the reading as normal. When you have uploaded IDs with ID questions assigned to them (LSGAM software required), you will be prompted to answer these questions at the end of the reading, this means that the answer only equates to that reading.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 41 of 70

8.5 Special action

This menu enables the operator to perform the additional following functions out of sequence if so desired.

1) From the ‘Main Gas Read Screen’ select the soft-key ‘Special Action’ and the

following menu is displayed:

 Note: The list of special action options displayed on the special action menu is

dependent upon device type and sequence.

The following actions may be available:

Action

Function

Key 1 – Simple Gas

This action enables the operator to take a quick gas reading. The pump will start running automatically when this key is selected. The operator can stop the pump by pressing the pump key on the keypad at any time and the reading can then be stored by selecting soft-key ‘Store’.

Key 2 – Site Questions

This action enables the operator to update site questions prior to taking a reading.

Key 3 – ID Questions

This action enables the operator to update ID questions specific to sample points prior to taking a reading.

Key 4 – Flow

This action enables the operator to measure internal flow first when taking a reading. Connect the blue hose to the sample point. The yellow hose can be vented a safe distance from the sample point or re-circulated back into the system. Select either soft-key ‘Zero Flow’,’ Flow

Options’ or ‘Start’ to commence internal flow. Select

soft-key ‘Store’ to store and record the reading.

Key 5 – Enter Temperature

This action enables the operator to manually enter a temperature reading if not using a temperature probe prior to taking a gas measurement.

Key 6 – Start Logging

This action enables the operator to leave the analyzer unattended to take samples at a predetermined time. The reading interval and pump run times may be edited prior to commencing the logging cycle.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 42 of 70

8.5.1 Configuration of the data logging option

1) Connect the gas inlet (white port) to the sample point. The yellow exhaust hose can

be vented a safe distance from the sample point; do NOT re-circulate back into the system.

2) By selecting ‘Next ID’ the operator can select the ID which is being sampled at

present.

3) Once the ID has been chosen the analyzer will commence and complete its clean air

purge cycle.

4) To gain access to the data logging option the operator will be required to select the

’Special Action’ key to obtain the special user options. The data logging option can then be selected via ‘Key 6’ to configure the logging parameters.

5) Once the operator has confirmed the logging parameters, select soft-key ‘Start

Logging’.

6) Once the logging function has been activated the analyzer will carry out a 30 second

warm-up (displayed below the temperature read out at the right of the main gas read screen) and begin the first sample.

7) If for any reason during the logging cycle the inlet port becomes blocked, the

analyzer will sense this as a ‘Flow Fail’ and the pump will automatically retry until the reading can be obtained. As such care must be taken when positioning the sample tubing to ensure water/moisture ingress does not occur.

8) Select soft-key ‘Stop Logging’ to stop logging if required.

8.5.2 Profiling option

1) The ‘Logging Mode’ center soft-key toggles between ‘Logging Mode’ and ‘Profiling

Mode’ and pressing it will change the mode to the one the soft-key describes. For example, when on the profiling page the key will display as ‘Logging Mode’ and when on the logging page the key will display as ‘Profiling Mode’.

2) To edit the parameter the operator will be required to select ‘Key 3’ to select the

number of reading required. Once the number of readings has been updated press the return key to confirm parameter setting.

3) By selecting ‘Key 2’ the operator can edit the logging interval of their logging

preferences and then confirm the amendments by pressing the return key.

4) Once the logging parameters are confirmed, commence the logging by selecting

the ‘Start Logging’ key.

5) If for any reason during the logging cycle the inlet port becomes blocked, the

6) Select soft-key ‘Stop Logging’ to stop logging if required.

Select the soft-key ‘Exit’ to exit this menu and return to the ‘Main Gas Read Screen’.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 43 of 70

8.6 GEM analyzer in GA mode

The operator may toggle between GEM (a gas extraction monitor) and GA (a landfill gas analyzer) mode of operation if required. From the ‘Special Action’ menu, select the middle soft-key to toggle between GEM and GA Mode.

 Note: For operating instructions on how to use the GA5000 mode of operation,

please refer to the GA5000 gas analyzer operating manual.

8.7 The gas flow measurement screen

The GEM5000 gas analyzer enables gas and flow measurements to be recorded by using:

 A flow device i.e. a PITOT tube, Orifice plate, Accu-Flo or anemometer.  A temperature probe.

The GEM5000 instrument has the extra functionality to measure the calculated calorific value of the gas. The site engineer uses the information recorded by the analyzer to make adjustments to the gas flow for specific boreholes. The initial and adjusted flow rates are recorded.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 44 of 70

8.8 How to use an anemometer (optional)

The GEM5000 gas analyzer has the facility to attach an anemometer device enabling the site engineer to measure the flow of gas within an extraction system. The anemometer can be set to display two values; m/s (meters per second) and m3/hr (metres cubed per hour).

It is best practice to take the gas reading first before taking the flow reading with the anemometer attached.

If using a ‘borehole ID’ the internal pipe diameter can be predetermined in the optional

LSGAM software. Once set, the site engineer cannot edit the pipe diameter setting.

If the site engineer is not using a borehole ID or the pipe diameter is not set in LSGAM the operator will be prompted to enter a pipe diameter with a new ID on the analyzer. Select soft-key ‘Next ID’ from the Main Gas Read screen, followed by soft-key ‘Add’ and add a new borehole location.

In order to use the anemometer it is important to know the internal diameter (ID) of the pipe if you want to calculate the flow in m3/hr (metres cubed per hour). This must be the internal diameter not the outer diameter (OD) i.e. pipe outer diameter minus twice the pipe wall thickness.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 45 of 70

For example:

If you do not have any suitable monitoring points you will need to drill (tap of ¾” BSP pipe thread) a hole in the piping of between 25mm and 30mm in diameter to seat the conical fitting on the anemometer (which is roughly between 20mm to 34mm). When not in use the hole can be re-sealed with a ¾” BSP male bung.

 Note: When the anemometer is not in use the conical fitting should be placed over

the probe to protect it.

The anemometer must fit centrally (the conical fitting must be set on the probe to half the pipe ID before insertion). The arrow on the tip of the probe must point in the direction of the gas flow.

 Note: Use the thumb screw to help align the direction of the probe into the gas

stream.

Flow readings are most accurate when there is laminar flow (not turbulent). Turbulence can be caused by a change in pipe direction or restriction. Ideally, upstream you want at least 20 times the pipe ID along the length of the pipe without restriction or bend. Downstream, you want at least five times the pipe ID along the length of the pipe i.e. for a 100mm ID you need 2000mm of clear pipe upstream, 500mm downstream.

Example to show anemometer fitting into the sample point:

Pipe ID

Pipe OD

Wall Thickness

Conical Fitting

Pipe Centre Line

Pipe

Head

Flow Direction

Thumb Screw

Anemometer

Conical Fitting

Pipe Centre Line

Pipe

Head

Direction of the arrow must be in the same direction as the flow

Flow Direction

Thumb Screw

Anemometer

Conical Fitting

Pipe Centre Line

Pipe

Head

Flow Direction

Thumb Screw

Anemometer

Conical Fitting

Pipe Centre Line

Pipe

Head

Direction of the arrow must be in the same direction as the flow

Flow Direction

Thumb Screw

Anemometer

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 46 of 70

Instructions for use:

1) Attach the anemometer to ‘Connector C’ (refer to section 5.3 – Instrument

connection points).

2) Place the anemometer into the pipe (sample point) ready to take the reading.

3) To take a flow measurement when using an anemometer, follow the instructions

displayed on the analyzer. When the reading has stabilized press the ‘Enter’ key to store the reading.

Anemometer cleaning instructions:

General handling tips:

 Protect the probes against severe vibration.  Do not kink the connector cable (risk of cable breakage).  Never allow hard objects to contact rotating impellers.  Always carry out probe cleaning according to the cleaning instructions.  Never immerse probes in solvent.  Never blow probes through with compressed air.  Allow hot probes to cool slowly, never cool by plunging them in cold water etc.

Cleaning instructions:

 Instrument and probe must be switched off or disconnected prior to cleaning.

Vane probes:

 As the probes are highly sensitive measuring instruments, they must be cleaned with

great care.

 Fibres or other foreign bodies can be carefully removed with fine tweezers. When

doing so, take care not to bend or otherwise damage the vanes or the spindle.

 The adjustment of the bearing screws must never be changed. This can result in an

erroneous measurement.

 Never allow hard objects to contact rotating impellers.  Cleaning agents that extract the plasticizer from the plastic are never to be used for

plastic probes (practically all solvents).

Cleaning the probes – best practice:

 Note: Use soapy water.

Cleaning example:

1) Carefully, swish the top part of the impeller back and forth in clean soapy water for

approximately 10 minutes. Then swish the top part of the impeller back and forth in clean soapy water. If soapy water is used as a cleaning agent it is advisable to wash out the soap solution thoroughly with distilled water.

2) After cleaning the probe, rub it dry with a clean, dry cloth.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 47 of 70

8.9 How to use a pitot tube (optional)

The GEM5000 gas analyzer enables the site engineer to take gas measurements using a pitot tube. The pitot tube is used for gas extraction systems and the pressure readings are taken in mbar. Gas flow is calculated in the analyzer in m3/hr (metres cubed per hour).

Example of a pitot tube

Fitting a pitot tube to the analyzer:

1) It is important to seat the pitot tube into the monitoring point with the tip facing into

the gas flow. The pitot tube should also be housed half way down the monitoring pipe. (Please refer to the anemometer instructions, which detail how to calculate the pipe diameter correctly).

2) Make sure that the sample tubing attached to the pitot tube fits correctly.

3) Attach the sample tube from the top connection of the pitot tube to the ‘blue port’

(the differential port) on the analyser making sure that the gas port connector secure into place.

4) Attach the sample tube from the side of the pitot tube to the ‘white port’ (inlet

port/static pressure port) on the analyser making sure that the gas port connector secures into place.

5) House the pitot gland correctly onto the monitoring point.

6) When taking a gas reading and flow measurement follow the instruction as displayed

on the front of the instrument.

 Note: Please refer to the following section for a diagram showing how to fit the

tubing to the pitot tube.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 48 of 70

8.10 How to use an H2S filter (optional)

8.8.1 Cross gas effects on chemical cells

Measurements of CO are important in landfill management. The GEM5000 analyzer incorporates an improved CO measurement. Measurements of CO can be affected by two other gases that can be found in landfill gas – hydrogen and hydrogen sulphide.

To reduce the effect of hydrogen, the GEM5000 analyzer uses a technique that is hydrogen compensated. Hydrogen compensation is achievable up to a level of around 2000ppm. Above this level the CO reading will not be compensated for.

In order to assist the operator the GEM5000 instrument also indicates the level of hydrogen present as low, medium or high. If a high hydrogen reading is present then the CO reading may be affected.

The effect of hydrogen sulphide is eliminated by the use of a H2S filter.

CO measurement

The CO measurement is sensitive to hydrogen sulphide. The presence of hydrogen sulphide can cause the CO reading to elevate (not to be the true value due to the interfering gas). If the presence of hydrogen sulphide is suspected to be causing false CO readings, then it is recommended that the external hydrogen sulphide filter is used while obtaining the CO measurement.

The H2S filter only needs to be used when you are trying to remove of any possible cross

gas effects H2S might have on other gas channels. Do not use the filter on all boreholes.

When using the H2S filter you will need to increase the gas sample and clean air purge run-time, as using an H2S filter decreases the response time of the analyzer.

 Note: There is an internal H

S filter incorporated in the chemical cell that removes

the H2S; however this has a limited life span.

The electrochemical cells used to measure H2S and CO do suffer from cross-gas effects. Such effects are not accurately specified. However, the following table may be useful as a guide; it represents how many ppm would be read by a cell if 100 ppm of the interfering gas were applied, with no other cross-contaminates being present in the sample.

GEM5000

Interfering Gas

H2S

SO2

NO2

Chemical Cell

CO (H2 compensated

100

0 / ~300*

0 0 <1

100

<4 /~300*

-20 to +5

<60

H2S

100

<-25

<0.2

*after internal filter depleted.

 Note: Other gases could cause cross-gas effects. If you suspect a cross sensitivity

problem please contact Technical Support (800) 968-2026 or email

landtec_support@qedenv.com

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 49 of 70

8.9.2 Cross-gas effects on methane, carbon dioxide and oxygen

Methane is measured using dual beam infrared absorption. Analyzers are calibrated using certified methane mixtures and will give correct readings provided there are no other hydrocarbon gases present within the sample (e.g. ethane, propane, butane, etc.). If there are other hydrocarbons present, the methane reading will be elevated (never lower) than the actual methane concentration being monitored.

The extent to which the methane reading is affected depends upon the concentration of the methane in the sample and the concentration of the other hydrocarbons. The effect is totally non-linear and difficult to predict.

 Note: The effect can be reduced by using an H

S filter as it can reduce higher order hydrocarbons. When using the H2S filter you will need to increase the gas sample and clean air purge run-time, as using an H2S filter increases the response time of the analyzer.

Carbon dioxide is measured by infrared absorption at a wavelength specific to carbon dioxide. Therefore, the carbon dioxide reading will not be affected by any other gases usually found on landfill sites.

The oxygen sensor is a galvanic cell type and suffers virtually no influence from CO2, CO, H2S, NO2, SO2 or H2, unlike many other types of oxygen cell.

The infrared sensors will not be ‘poisoned’ by other hydrocarbons and will revert to normal operation as soon as the gas sample has been ‘purged’.

H2S filter:

Instructions for use:

The following diagram shows how to modify the standard water trap and sample tubing to fit the H2S filter.

Sample Point

Sample Tubing

Cut the

Sample

Tubing

Water Trap

Insert

H2S Filter

Gas Port Connector

Standard Water Trap and Sample Tubing

Modified Water Trap and Sample Tubing with H2S Filter

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 50 of 70

 Note: When onsite the site engineer must have an unmodified water trap assembly

in addition to the modified water trap with a H2S filter in order to take readings with and without a filter.

1) Once the H

S filter is fitted follow the instructions as detailed on the front of the gas

analyser displayed when taking readings using a H2S filter.

 Note: This is only for analysers fitted with the CO compensated cell.

Fitting a pitot tube to a sample point when using an H2S filter:

2) Make sure the water trap filter is fitted as close as possible to the pitot tube. This

will help protect and trap moisture before it reaches the H2S filter. Make sure that the water trap filter is clean and dry.

3) Attach the sample tubing into the analyzer.

4) To take flow readings using a pitot tube, please follow the instructions displayed on

the front of the instrument. The user will be prompted to complete each step and should follow the instructions on screen.

 Note: It is important to fit the pitot tube central and parallel with the pipe.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 51 of 70

8.11 How to use a temperature probe (optional)

The temperature probe enables the site engineer to measure the temperature of the gas within a sample point. The GEM5000 gas analyzer uses the temperature of the gas to give more accurate flow measurement readings as part of the instrument calculation.

Instructions for use:

1) The temperature probe reading is taken along with the gas measurement reading.

2) The analyzer must be at the ‘Main Gas Read Screen’.

3) Attach the temperature probe to ‘connector B’ (refer to section 5.3 – Instrument

connections points).

4) Insert the temperature probe into the sample point (borehole) at the same time as

you attach the sample tube to the sample point (two sample points are required for the borehole).

5) Follow the instructions on the front of the instrument when taking your gas and

measurement reading.

6) At the point in which the operator presses ‘Enter’ to store the gas reading the

temperature is recorded.

 Note: Temperature probe readings can be analysed further when downloaded

to LSGAM.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 52 of 70

8.12 How to identify a borehole using the GPS feature (optional)

 Note: Borehole IDs may be uploaded from LSGAM with or without location

information. If location details are not uploaded the location longitude and latitude coordinates can be stored when the borehole is located and downloaded to LSGAM with the reading measurements.

Screen navigation:

1) Switch on the analyzer and wait for the self-test warm-up to complete and the

analyser will display the ‘Main Gas Read Screen’.

2) In order to use the navigation function if configured, you must switch ‘Navigation -

On’ on the analyzer. Select the ‘Menu’ key followed by ‘Key 5’ to toggle navigation to on. Select the ‘Menu’ key to exit and return to the ‘Main Gas Read Screen’.

3) Select the soft-key ‘Next ID’, then select a borehole ID from the list displayed and

press the ‘Enter ‘key to continue.

Warning

Before entering the GPS Navigation Screen for the first time the following health and safety message will be displayed.

“Please be aware of the terrain when using this screen. You are responsible for your own safety whilst walking onsite!”

4) After reading the user warning message, select the soft-key ‘Dismiss’. Use the

tracking display to locate the borehole

 Note: There is often a wait time frame of between 30 seconds to two minutes

while getting a satellite signal. Be aware that heavy rain, trees overhead etc. will give a bad fix.

5) Once the operator selects a borehole ID the ‘GPS Navigation’ screen is displayed.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 53 of 70

6) If required, select soft-key ‘Options’ to go to the ‘Navigation Options’ menu and the

following screen is displayed:

Navigation options

Key 1

Key 1 to toggle between ‘Meters’, ‘Feet’ or ‘Yards’ to

define the unit of measurement.

Key 2

Key 2 to toggle between ‘Manual Scaling’ and ‘Automatic Scaling’ to locate a sample point using a satellite signal.

Key 3

Key 3 to display sample point information:

Bearing:

Direction.

UTC time:

‘Universal Time Code’ received from the satellite and

displays GMT.

Latitude:

Latitude displays as degrees, minutes, seconds and decimal seconds. The equator is 0.

Longitude:

E (East) or W (West) displays the longitude as degrees, minutes, seconds and decimal seconds. The Greenwich meridian defines the zero point.

Altitude:

Altitude displays in meters, feet or yards.

Satellite:

This is the number of satellites that the system can select. Four satellites will give reasonable position accuracy; eight or more satellites will increase accuracy.

Horizontal:

Estimate of horizontal error on the indicated position. The location is accurate to horizontal error 1.6m.

Vertical:

Estimate of vertical error on the indicated position.

HDOP:

‘Horizontal Dilution of Precision’ which measures the

accuracy of the indicated position.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 54 of 70

Changing the selected ID

It is possible to change the currently selected ID (identified by green icon ) by pressing the 2 and 8 and keys to move the cursor up and down the list of visible Ids. To change the selection press Enter. Notice that the selected ID moves to the top of the list and its icon turns green.

Changing the scale

You can change the display’s scale by using the 4 and 6 keys to zoom in and out.

GPS signal strength:

This icon shows the signal strength the analyzer’s GPS module is able to provide. Full, okay and fair strength respectively.

GPS failure - the GPS was unable to get a line of sight lock on enough satellites. Or, it may be that it hasn’t had time to get a lock.

7) Select soft-key ‘Continue’ and the operator is returned to the ‘Main Gas Read Screen’.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 55 of 70

8.13 Taking gas and flow measurement

START

END

If using GAM

Set up GAM &

UPLOAD to

analyser

Air Purge

Instrument screen

Disconnect all tubing and allow analyser to

purge with fresh air.

Select soft-key ‘Next’

If using GAM

Download

readings to GAM

Select

soft-key

‘Next’

GO TO select or

add borehole ID

YES

Zero Transducers

screen

Select Technician

ID if required or

soft-key ‘Skip’

Select

soft-key

‘Next ID’

Main Gas Read

Screen

Instrument

warm up

Disconnect all tubing from the

sample points and wait for

readings to stabilise. Select

soft-key ‘Next’ to continue

if readings return to zero,

otherwise to remove an offset

perform a zero

Connect the clear tubing to the static pressure

sample point. The blue tubing should be

connected to the differential pressure sample

point. The yellow exhaust tube must be vented to

atmosphere, a safe distance from the user. DO NOT re-circulate back into the system.

Select

soft-key

‘Next’

Are you

using a

temperature

probe?

Wait for

Pump to run

(i)

Attach

temperature

probe

Insert temperature

probe into the

sample point

Measure initial gas

flow reading displayed

in the Main Gas Read

Screen

Attach temperature

probe or key in

temperature manually

and press ‘Enter’

Adjusted Flow

Readings Fixed

NO Select soft-key

‘Temperature’

Take another

reading?

Select

soft-key

‘Next’

Select or Add

Borehole Id and

press the ‘Enter’

key

If configured -

operator may locate

sample point using

GPS

Wait then

select

soft-key

‘Continue’

If required select soft-

key ‘Special Action’ to

update site & ID

question (ii)

Select

soft-key

‘Exit’

Main Gas Read

Screen

Gas Measurement

screen

Select

soft-key

‘Start’

Connect the clear sample tube to

the sample point. The yellow

exhaust tube should be vented a

safe distance from the user or

re-circulated back into the

system.

Wait for the initial

readings to

stabilise

Select

soft-key ‘Next’

Initial Gas

Readings Fixed

Select

soft-key

‘Next’

Select

soft-key

‘Next’

Wait for adjusted

readings to stabilise

on the Main Gas

Read Screen

System Pressure

Screen (iii)

Disconnect all

tubing from the

sample points and

wait for readings

to stabilise. Select

soft-key ‘Next’

if readings return

to zero, otherwise

to remove an

offset perform a

zero

Connect the clear sample tube to

the sample point. The yellow

exhaust hose should be vented a

safe distance from the sample point or re-circulated back into

the system.

Pressure Readings

Fixed

Select

soft-key

‘Next’

Readings stored

successfully

Select

soft-key

‘Store’

Select

soft-key

‘Dismiss’

Wait for initial

readings to stabilise

on the Main Gas Read

Screen

Initial Flow

Readings Fixed

KEY:

(i) If GPS configured the first reading will display a warning message. Select soft-key ‘Dismiss’ to continue. (ii) Special action – if required change the analyser into GA mode of operation. (iii) System pressure reading only available if set up on GAM. NOTE: To restart a reading select soft-

key ‘Special Action’ followed by key 1 ‘Restart Process’.

Are you

using an

anemometer?

Attach anemometer

& insert into the

sample point

YES

Select soft-key

‘System Pressure’

Select

Soft-key

‘Next’

Select

soft-key

‘Next’

Select

Soft-key

‘Next’

Taking a system pressure reading

Taking a flow reading

Taking a gas measurement reading

Select

soft-key

‘Next’

Input the temperature

on the Main Gas

Read Screen and

press the ‘Enter’ key

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 56 of 70

9.0 Calibration

9.1 Calibration introduction

The GEM5000 gas analyzer is carefully calibrated at manufacture and when returned for service. However, it is sometimes desirable to be able to carry out a calibration process between services.

This section outlines the correct procedures to enable the site engineer to field calibrate the gas analyzer.

 Note: This does not replace the factory service and calibration. If this calibration is

completed incorrectly it may decrease the accuracy of the gas analyzer.

4, CO2

and O2 can be measured by GEM5000 gas analyzer as standard; these channels can be user calibrated. The analyzers have other gas channel options that are specified at manufacture; these too can be calibrated. This section will describe in detail how to calibrate the three standard gas channels plus the CO channel.

The GEM5000 instrument can have a H2 compensated CO channel. This option requires that H2 is used in the calibration process and is also set out within this section.

For the other gas channel options contact QED for advice.

Two important terms that are used within this section are ‘Zero’ and ‘Span’.

Zero: The point at which the gas analyzer is calibrated when there is none of the target

gases present.

Span: The point at which the gas analyzer is calibrated when a known quantity of the

target gas is present.

9.2 Frequency of calibration – best practice

The GEM5000 gas analyzers can be checked against a known concentration of gas, to give confidence that the analyzer is operating as expected at the time and conditions in which it is being used.

It is recommended that the instrument is regularly serviced and calibrated by QED in accordance with the due date on the instrument.

When defining the frequency of user calibration, the following are factors to be considered:

 The frequency of use of the analyzer. (daily?/monthly?)  The level of confidence and accuracy required for readings to be taken.  Historical user calibration data.  Site specific requirements or conditions.  Historical understanding of expected readings on site.

Zeroing of the gas analyzer should be undertaken at the start of each day’s monitoring.

Use historical data to drive your frequency of calibration. If there is no historical data a good starting point for a daily monitoring round is performing a calibration once every week or every other week.

The results of the calibrations will need to be recorded to monitor over time whether the frequency of calibration needs to be increased or decreased relative to the confidence required.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 57 of 70

The confidence required will be driven by the site specific / user requirements.

When undertaking the monitoring with an understanding of the history of the gas levels of that site, a calibration check could be triggered if the readings measured are different to what is expected.

 Note: For assistance please contact Technical Support at (800) 968-2026 or email

landtec_support@qedenv.com

9.3 Calibration gases

User calibration of a gas analyzer will greatly improve the data accuracy in the range of the calibration gases used. This may cause less accurate readings of concentrations outside this calibrated range. Users should select the correct calibration gas for the expected gas levels on their particular application.

 To improve calibration at lower levels requires the use of gas mixtures 1 and 2.  To improve higher levels use gas mixture 3.  For standard CO only 100ppm CO gas is needed.  For CO (H

compensated) both CO 100ppm and H2 1000ppm gases are needed.

The following table indicates the different gas mixture canisters used for calibration:

Calibration gas

CH4

CO2

Mixture 1

Mixture 2

10%

Mixture 3

60%

40%

Calibration targets for gas cells are dependent on the gas/range and type of cell fitted. Contact Technical Support for assistance.

These are for general use but other gas concentrations can be used.

 Note: The above gases and most other gas concentrations can be supplied by QED.

For further information please contact Sales at (800) 624-2026 or email

info@qedenv.com

Warning

Calibration gases can be dangerous.

For each gas used the appropriate material safety data sheet must be read and understood before proceeding.

9.4 Calibration set-up

Warning

Do NOT attach the gas supply to the gas analyzer before putting the analyzer into the ‘Gas Check’ screen. Select ‘Check Spans’ from the ‘Operation Settings’ menu.

The regulator supplied with the calibration kit has been configured to deliver a fixed flow.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 58 of 70

As the regulator’s flow is factory set, it only requires a few turns to open, no adjustment is necessary.

Warning

Exhaust port

When the gas analyzer is being calibrated, there are two possible exits for the gas, via the usual manner out of the exhaust (yellow) port of the analyzer or in cases of overpressurisation the 1/16” port on the red pressure relief valve located on the regulator.

It is recommended that both ports have exhaust tubing attached.

The exhaust tubing must emerge in a well-ventilated area. Ensure there are no leaks in the tubing and connections.

The calibration of the gas analyzer should be carried out in a safe area with all necessary precautions taken when using potentially dangerous, explosive or toxic gases.

 Note: There is also potential for gas to expel from the internal flow (blue) port of the

gas analyzer (applies to the GA5000 only).

9.5 Calibration equipment

The diagram below displays the regulator and tubing equipment for user calibration:

 Certified calibration gas, available in either 29 liter, 34 liter or 58 liter gas canisters

are supplied with the Landtec calibration kit. Please refer to the Landtec website

www.landtecna.com for further information.

 The regulator supplied with the calibration kit is pre-set for flow and pressure rates

that are factory set.

 If you are using a non Landtec supplied regulator, please ensure that it does not

supply any greater than 200 mbar pressure.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 59 of 70

9.6 Gas analyzer

For the GEM5000 gas analyzer the calibration options can be found by selecting the ‘Menu’ key followed by soft-key ‘Operation Settings’. Select ‘Key 2 – Gas Check’ then follow the instructions on the analyzer screen by selecting ‘Key 2 – Gas Check’.

9.7 Calibration processes – best practice

The following process diagrams outline the calibration steps.

 Ensure that you are regulating calibration gas down to below 200 mbar pressure, if

you’re not using a Landtec regulator. The use of a pressure relief valve is also highly recommended.

 When calibrating, it is recommended to use a calibration mixture close to the levels

you are trying to measure, i.e. if you are trying to measure gas migration on a closed landfill, we’d recommend calibrating with CH4 5%/CO2 5%.

 In regards to frequency, we would recommend that you perform a fresh air calibration

before each monitoring session, and a span calibration typical every 4 – 6 weeks.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 60 of 70

9.7.1 Gas Check in fresh air

START

Switch on the

instrument and

complete the

instrument warm up.

Main Gas Read

Screen select the

‘Menu’ key

Select key 2

‘Gas Check’

Select key 1

‘Gas check’

Message will display

‘Please wait for timer

to reach zero’

When complete a

message will

display ‘Check

complete’

Read status field on the right hand

side of the screen

Retry

Calibrate

Record

Result saved

END

Record

Select

soft-key

‘Exit’

Calibrate

Select ‘Fresh Air’ by using

the enter key

This feature records

that a gas check has

been completed but

does not calibrate

the analyser

Please see the section

9.11 – Calibration troubleshooting

Disconnect all

tubing

Let the pump run for 90 seconds

and select soft key ‘check’

Was the

calibration

successful?

Successful

Unsuccessful

Select

soft-key

‘Exit’

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 61 of 70

9.7.2 Calibration – mixtures 1, 2, & 3

START

Switch on the

instrument and

complete the

instrument warm up.

Main Gas Read

Screen select the

‘Menu’ key

Select key 1

“Gas check”

Connect the flow

regulator to the

white port on the

analyser

Flow certified gas mixture using the

gas regulator

supplied

Wait for the readings

to stabilise. Wait for

the analyser to

check spans for

approx. 1 minute.

Message will

display ‘Please

wait for timer to

reach zero’

When complete a

message will

display ‘Check

complete’

Read status field

in the right hand

corner of the

screen

Read status field

in the right hand

corner of the

screen

Retry

Calibrate

Record

END

Select

soft-key

‘Check’

Record

Calibrate

Successful

Select correct gas mixture:

1, 2, or 3, or add User-

selectable gas mixture

Press

‘Enter’

to confirm

Gas mixture

This feature records

that a gas check has

been completed but

does not calibrate the

analyser

Please see section

9.11 – Calibration troubleshooting

Select

soft-key

‘Exit’

Unsuccessful

Select key 2

‘Gas check ’

Was the

calibration

successful?

Select

soft-key

‘Exit’

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 62 of 70

9.8 Restore to factory settings

This option will reset the gas analyzer to all of its factory programmed calibration settings and will clear ALL the user defined calibration points. It will not affect or remove ID’s or readings from the analyzer.

1) Select ‘Key 2 - Restore to factory’ followed by the soft-key ‘Confirm’ or ‘Cancel’.

2) A validation message is displayed ‘Reset user calibration?’ Press the soft-key ‘Confirm’

to continue with the factory settings or soft-key ‘Cancel’ to cancel the operation and return to the Gas Check menu.

9.9 Calibration history

The GEM5000 gas analyzer logs user calibrations in ‘History’ application. This can be used as an aid to ensuring that gas measurements are valid and accurate. Both good and failed calibration results are recorded for each channel calibrated.

1) Select ‘Key 3 – History’.

2) The operator may view the calibration data stored. Use the soft-key ‘Filter’ to add a

sort filter to the history enquiry.

9.10 Calibration summary

The GEM5000 gas analyzer has the facility to log the history of user calibrations.

1) Select ‘Key 4 – Summary’.

2) The operator may view the calibration data history stored by ID, technician,

timestamp, type and calibration result. Use the soft-key ‘Exit’ to exit and return to the ‘Gas Check’ menu.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 63 of 70

10.0 Problem Solving

This section outlines various warning and error messages which the operator may receive during general operation of the instrument. For further assistance please contact Technical Support at (800) 968-2026 or email landtec_support@qedenv.com

11.0 Warning and error display

When switched on, the instrument will perform a pre-determined self-test sequence taking

approximately 15 seconds. During this time many of the instrument’s working parameters

and settings are checked.

If any operational parameters are out of specification or the pre-programmed recommended calibration/service date has passed, errors or warnings may be displayed.

Use the ‘Scroll up’ and ‘Scroll down’ keys to move through the list if required.

Only three warnings/errors can be displayed at any time.

To ascertain if more errors have occurred use ‘Key 8’ – Scroll down’ and ‘Key 2’ - Scroll up’ through the list.

Warnings displayed:

All warnings displayed will be prefixed by the word WARNING followed by a relevant description.

There are two types of warning that may be displayed:

1. General warnings that may not affect the instrument’s function and those where the

self-test has detected a function that is outside the usual programmed operating criteria, e.g. battery charge low, memory nearly full.

2. Operational parameters that could affect the performance of the analyzer: Cell out of

calibration, CH4 out of calibration, CO2 out of calibration.

The most likely reason for the errors is either an incorrect user calibration or sensor failure. If an incorrect user calibration has caused the warning it should be correctable by way of returning the instrument to factory settings, zeroing or carrying out a user calibration as necessary for the relevant function.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 64 of 70

12.0 Service

The GEM5000 gas analyzer should be regularly serviced to ensure correct and accurate operation. QED recommends a service and recalibration every 12 months.

The GEM5000 range is ATEX certified for use in potentially explosive areas. As such it should be serviced only by qualified engineers. Failure to observe this will result in the warranty becoming invalid and could invalidate the ATEX certification.

Warning

If the GEM5000 is serviced by unqualified engineers the ATEX certification may be invalidated and the instrument may be unsafe for use in a potentially explosive atmosphere.

User serviceable parts:

There are no user serviceable parts inside the instrument.

The following parts can be user serviced:

In-line water filter

This should be regularly inspected for obstructions, moisture or damage and changed if needed. The instrument should never be operated without the in-line water filter as this may result in water entering the instrument.

Sample tubing

Always ensure that sample tubes are not contaminated or damaged.

Gas port connectors

Periodically check that the O-rings on the gas port connectors are not damaged. A damaged O-ring can let air into the sample gas and result in incorrect readings. If the O-ring is damaged the complete gas port connector should be replaced.

H2S filter material

When the filter material changes color to a light gray color the filter should be replaced.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 65 of 70

13.0 Warranty policy

This instrument is guaranteed, to the original end user purchaser, against defect in materials and workmanship for a period of 3 years from the date of the shipment to the user.

During this period QED will repair or replace defective parts on an exchange basis.

The decision to repair or replace will be determined by QED.

To maintain this warranty, the purchaser must perform maintenance and calibration as prescribed in the operating manual.

Normal wear and tear, and parts damaged by abuse, misuse, negligence or accidents are specifically excluded from the warranty.

 Note: Please contact Technical Support at (800) 968-2026 or email

landtec_support@qedenv.com for further information.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 66 of 70

14.0 Glossary of terms

5000 series

The 5000 series refers to the GA5000, GEM5000 and the Biogas5000 gas analyzers.

Accu-Flo

A flow device used to aid accurate flow measurement.

Analyzer error messages

Operational errors are prefixed on the analyzer by the word ERROR followed by an error code.

Refer to the list of standard error codes for more information.

Analyzer warning

Analyzer warnings are prefixed by the word WARNING followed by a relevant description. There are two types of warning messages displayed; general warnings that may not necessarily affect the instrument’s function (for example, battery power low) and operational parameters that could affect the performance of the analyser (for example, CH

out of

calibration).

Anemometer probe

Device for measuring velocity of gas in the pipe. The GEM5000 analyzer can be set to convert into a flow. See also flow measurement.

ATEX certification

The GEM5000 is ATEX certified to zone 1 & 2 areas above ground not in mines.

Auxiliary channel

This refers to the channels where external devices will be connected or displayed.

Backlight

The analyser has a built-in backlight for low ambient light conditions. This can be toggled on/off using the backlight key.

Barometric pressure

The atmospheric pressure at the given location.

Borehole

Typical location from which a gas sample is obtained.

Calibration

The gas analyzer is carefully calibrated against known standards.

Calibration record

The GEM5000 instrument has the facility to log user calibrations as a validation tool.

CH4

Methane

Chemical cells

A method of gas detection that works on the basis of a chemical reaction with the target gas.

Clean air purge

Process used to clear out gas from the sample tube and analyser prior to taking a new reading.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 67 of 70

CO Carbon monoxide

Data logging

Carbon dioxide

Data logging enables the operator to leave the analyzer unattended to take samples at predetermined intervals for a set period of time

Download

Terminology used for the movement of data from the analyzer to the LSGAM application on the PC.

Dual beam infrared absorption

Method of gas detection by measuring how much infrared is absorbed by the target gas.

Event log

Used as an aid to monitoring the use of the analyser. It can also be used as a diagnostic tool.

The event log can be viewed via LSGAM. It cannot be viewed on the analyzer screen.

Exhaust port

The usual manner for the gas to exit the analyzer is via the exhaust port located on the top side of the analyzer. This port should have an exhaust tube attached.

Exhaust tube

Clear plastic tubing used to expel gases from the exhaust port.

Factory settings

Default settings preset at time of manufacture or service.

Firmware

Firmware is the term by which the internal analyzer software is known and is not accessible by the client. This firmware is updated to the latest version when the analyzer is returned for servicing.

Flow measurement

Flow can be measured by either gas velocity m/s or volume flow rate m3/hr. This measurement of flow relates to the use of the anemometer and not the internal flow measurement technique.

Flow port

For the measurement of gas flow at the sample point.

Landtec Systems Gas Analyser Manager

Also referred to as LSGAM. PC based software which enables the operator to upload and download information to/from the analyser.

LSGAM enables operators to maximise the operation of their gas analyzer. It features a simple upload and download facility and is fully

compatible with the latest Microsoft™ operating

systems.

This is optional.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 68 of 70

Gas channels

The gases that are analyzed by the instrument.

Gas velocity

The positional rate of change of the gas. Measured using the optional anemometer.

General warnings

Displayed throughout the documentation with a warning symbol. Warning information may affect the safety of operators.

H2 Hydrogen

H2S

Hydrogen sulphide

H2S filter

Filter required for removal of H2S.

When the filter material changes color to a light gray color or if H2S values are displayed, then the filter should be replaced.

Hydro-carbons

Organic compound consisting of only hydrogen and carbon.

In-line water filter

The component used to help protect the instrument from water ingress.

LCD display

Liquid Crystal Display

LEL

Lower Explosive Limit. Lower explosive limit of methane in air. 5% methane in air is the point at which it becomes explosive. 100% LEL equates to 5% methane.

m/s

Meters per second – measurement of gas velocity.

m3/hr

Meters cubed per hour – volumetric flow rate measurement.

Main Gas Read Screen

The main analyzer screen for normal operations and all operations are carried out from this screen.

Material data sheet

Document from which information about a certain substance can be obtained.

MCERTS certification

Memory

Location where data and ID information is stored. The analyzer memory should not be used as a permanent storage medium. Stored data should be regularly transferred using the LSGAM download software.

GEM5000 Gas Analyzer OMGEM5KN4.7.1

Page 69 of 70

NO2

Nitrogen dioxide

Operating language

The operator can choose the default operating language for the analyzer. Choices are English, German, Spanish, French and Italian.

PPM

Parts per million

Pump

Used to draw the gas sample from the sample point to the analyzer.

Select the pump key on the analyzer to activate.

ID The user definable identification tag allocated to

a sample point.

Relative pressure

The pressure at the sample point ‘relative’ to

atmospheric (barometric) pressure.

Relative pressure transducer

The internal component used to measure the relative pressure.

Residual N2

The calculation for the residual N2 used on the latest version of the GEM5000 platform is as follows:

Residual N2 = Balance – (O2% x 3.76)

Where, Balance = 100% - (CH4% + CO2% + O2%) and 3.76 is the ratio of O2 to N2 in

ambient air (79/21)

Sample tube

The tube used to obtain a sample of gas from the sample point to the analyzer.

Span

The point at which the gas analyzer is calibrated when a known quantity of the target gas is present.

Span multi gas

Term by which the span calibration of the three main gas channels is known. This option must only be used when the calibration gas being used is a combination of CH

4 CO2 O2

Technician ID

An alpha-numeric code tagged to each gas reading. Facility only available via LSGAM. This is an optional feature.

Temperature probe

External device used to measure the gas temperature at the sample point. This is optional.

Update site data

Enables the operator to answer pre-defined questions relating to the site, environment etc. These questions are defined via LSGAM software.

OMGEM5KN4.7.1 GEM5000 Gas Analyzer

Page 70 of 70

Upload

Terminology used for the movement of data from the PC via LSGAM software application to the analyzer.

Volume flow rate

The volume of a gas that passes through a given surface per unit of time e.g. m3/hr

Warm-up self-test

Pre-determined self-test sequence to test the analyser functions which takes place after the analyzer is switched on.

Warranty

The instrument is under guarantee against defect in materials and workmanship for a period of 3 years from the date of shipment to the operator and is subject to the recommended service and recalibration requirements.

Water trap

Device used to protect the instrument from water or moisture ingress.

Zero

The point at which the gas analyzer is calibrated when there is none of the target gas present.

Zero transducers

This option allows the relative pressure transducer to be zeroed.

LANDTEC GEM5000 Operating Manual

Specifications and Main Features

Frequently Asked Questions

User Manual