LANDTEC Geotech G200 User manual

©Copyright 2010 Geotechnical Instruments (UK) Limited
G200 Analyser Range
Operating Manual
G200 N20 0-1,000ppm
G210 N20 0-100%
Geotechnical Instruments (UK) Ltd
Sovereign House
Queensway
Leamington Spa
Warwickshire
CV31 3JR
England
Tel: [phone]
Fax: [phone]
Email: [email protected]
Website: www.geotech.co.uk

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Table of Contents
1.0 MANUAL GUIDELINES ......................................................................................5
1.1 Document History ...........................................................................................5
1.2 Safety Related Information...............................................................................5
1.3 Notes ............................................................................................................5
2.0 INTRODUCTION ...............................................................................................6
2.1 The G200 Analyser..........................................................................................6
2.2 The G210 Analyser..........................................................................................7
2.3 Instrument Components - Standard Product........................................................8
3.0 G200 RANGE OPTIONAL PRODUCTS AND ACCESSORIES ..................................9
3.1 Optional Products............................................................................................9
3.1.1 Analyser Data Manager (Optional)................................................................9
3.1.1.1 Event Log............................................................................................9
3.1.2 Carbon Monoxide Reading (Optional - G210 ONLY) .........................................9
3.1.3 Oxygen Reading (Optional – G210 ONLY)......................................................9
3.1.4 Pressure Regulator Kit (G210 ONLY).............................................................9
3.1.5 Soda Lime CO2Filter ................................................................................10
3.2 Instrument Accessory Products .......................................................................11
4.0 INSTRUMENT FEATURES ................................................................................12
4.1 Physical Characteristics of the Instrument Panel ................................................12
4.2 Panel Key Functions.......................................................................................13
4.3 Instrument Connection Points .........................................................................14
5.0 GENERAL OPERATIONAL INSTRUCTIONS .........................................................15
5.1 Switching the Instrument On ..........................................................................15
5.2 Switching the Instrument Off ..........................................................................15
5.3 Entering Data ...............................................................................................15
5.4 Instrument Status Icons.................................................................................16
5.5 Changing Between Parameters........................................................................17
5.6 Memory .......................................................................................................17
5.7 Storage .......................................................................................................17
5.8 Warning and Error Codes................................................................................17
5.9 Battery/Charging...........................................................................................17
5.10 Instrument Main Read Screen ......................................................................18
5.10.1 Alternative Reading Methods...................................................................18
5.11 Enter ID Codes...........................................................................................19
5.12 Main Menu.................................................................................................20
5.12.1 Information..........................................................................................20
5.12.2 Utilities................................................................................................21
5.12.2.1 Time & Date.....................................................................................21
5.12.2.2 Contrast ..........................................................................................21
5.12.2.3 Alarms.............................................................................................22
5.12.2.4 Settings...........................................................................................23
5.12.2.5 Flow Fail ..........................................................................................23
5.12.2.6 Logging ...........................................................................................26
5.12.2.7 Reset ..............................................................................................26
5.12.3 Calibration ...........................................................................................27
5.12.4 View Data............................................................................................27
5.12.4.1 Delete All.........................................................................................28
5.12.4.2 Filter ...............................................................................................28
5.12.4.3 Goto................................................................................................29
5.12.5 Diagnostics ..........................................................................................29

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5.12.6 Monitor (G200 ONLY) ............................................................................29
6.0 TAKING READINGS.........................................................................................31
6.1 Preliminary Checks - Best Practice ...................................................................31
6.2 G200 Gas Measurement Process – Best Practice ................................................32
6.3 G210 Gas Measurement Process – Best Practice ................................................33
7.0 CALIBRATION ................................................................................................34
7.1 User Calibration ............................................................................................34
7.2 Calibration Gases ..........................................................................................34
7.3 Calibration Set-up .........................................................................................34
7.4 Calibration Equipment....................................................................................35
7.5 Calibration Method ........................................................................................35
7.5.1 Zero Calibration.......................................................................................36
7.5.2 Span Channels ........................................................................................36
7.5.3 Reset Factory Settings..............................................................................37
7.6 Last Field Calibration .....................................................................................37
7.7 Calibration Record.........................................................................................37
7.8 Recommended Gases for Calibration...................................................................38
7.9 G200 Range Calibration – Best Practice...............................................................39
8.0 PROBLEM SOLVING ........................................................................................40
8.1 Warnings and Errors......................................................................................40
8.2 Battery No Charge Reset................................................................................40
8.3 Self-test Warning Messages............................................................................41
8.4 User Calibration Trouble Shooting....................................................................43
8.5 Cross-Gas Effects..........................................................................................44
8.6 Hardware Reset ............................................................................................45
9.0 SERVICE.........................................................................................................46
10.0 WARRANTY POLICY.....................................................................................47
11.0 TECHNICAL SPECIFICATION........................................................................48
11.1 G200 ........................................................................................................48
11.2 G210 ........................................................................................................50
12.0 EVENT LOG ..................................................................................................52
13.0 CERTIFICATE OF CALIBRATION...................................................................54
14.0 IMPORTANT NOTICE TO ALL CUSTOMERS....................................................55
15.0 EC DECLARATION OF CONFORMITY.............................................................56
16.0 GLOSSARY OF TERMS ..................................................................................57

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1.0 Manual Guidelines
1.1 Document History
Issued
By Issue Date Change Control ID Issue No. Reason for Change
LA Nov 2009 OMG200UK 1.21 New Instructions.
LA Feb 2010 OMG200N 1.22 New Instructions. Inclusion
of the G210 model.
LA Mar 2010 OMG200N 1.23 New Instructions.
1.2 Safety Related Information
Information in this manual that may affect the safety of users and others is preceded by the
following symbol:
Warning
Failure to follow this information may result in physical injury which in some cases could be
fatal.
1.3 Notes
Important/useful information and instructions are shown clearly throughout the manual in a
note format.
For example:
"Note: For further information, please contact Sales at Geotechnical Instruments (UK)
Limited on [phone] or email [email protected].

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2.0 Introduction
This manual explains how to use the instrument model types listed below:
•G200 N20 0-1,000ppm (plus 10,000 range low resolution)
•G210 N20 0-100%+CO2 0-2,000ppm+O2 0-100%+CO 0-500ppm
The G200 analyser is specifically designed to safety check background levels of N2O (0-
1,000ppm) in medical applications. The G210 analyser is specifically designed for highly
accurate measurement and verification of the quality of piped medical gases in hospitals. Both
units have been developed to incorporate the latest technology and specification requirements,
which provide the user with a fast, simple-to-use and accurate piece of monitoring
instrumentation.
"Note: These instruments are sensitive pieces of scientific equipment, and should be treated
as such.
2.1 The G200 Analyser
The G200 analyser is specifically designed to safety check background zone levels of N2O
(0-1,000ppm) in medical applications. This instrument measures the long term exposure to
N2O gas along with the TWA (time weighted average), leak detection for N2O storage. It is
a dual purpose background analyser or personal analyser and is highly portable.
The G200 analyser has the following features:
•O2, N20 0-1,000ppm
•Data storage for 1,000 readings and download
•EH40 occupational exposure limits calculated (TWA) – applicable to the UK only
•Leak detection
•User settable alarms
•Data download for graphing and reporting
Inlet
Soda Lime
CO2
Filter
Current
Value
TWA
Value

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•Four modes of operation: personal safety - TWA 8 hour read back; room monitor –
background levels, user defined times; leak mode – 1-10,000ppm fast response; and
standard measuring.
2.2 The G210 Analyser
The G210 analyser is specifically designed for highly accurate measurement and verification
of the quality of piped N2O and O2gases in hospitals. This instrument enables up to four
gases to be measured, easy user calibration, quick verification of gas quality, user
maintained site and sample point IDs for monitoring as well as identification of
contaminants CO and CO2.
The analyser has the following features:
•N2O 0-100%
•O2 0-100% (optional)
•CO 0-500ppm (optional)
•CO20-2,000ppm
•Data storage with site and ID input
•Data download for graphing and reporting

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2.3 Instrument Components - Standard Product
G200 Model
Reference:
A Analyser
B Mains Battery Charger
C Mains Battery Charger Adaptors:
Europe
US
Australia
D Soda Lime CO2Filter (G200 Only)
E Operating Manual

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3.0 G200 Range Optional Products and Accessories
3.1 Optional Products
The G200 analyser range has a number of optional products for purchase which enhance
the usability and enable further analysis of data and reading information.
"Note: For more information on the features listed in this section please contact Sales at
Geotech (UK) Limited on [phone] or email [email protected].
3.1.1 Analyser Data Manager (Optional)
Analyser Data Manager software application enables the operator to maximise the
operation of the analyser by providing the ability to:
•Obtain instrument status.
•View the instrument readings and event log data.
•Download and store readings for further analysis.
•Graph downloaded instrument readings.
•View, import and export the instrument configuration.
•Update the instrument’s firmware.
•Copy data from the G200 Client into other packages such as MS Excel.
•Email data directly from the application.
•Configure remote access to a central database.
•Print graph and tabular data.
3.1.1.1 Event Log
The G200 range of instruments incorporates the facility to log significant events via the
‘Event Log’. This can be used as an aid to monitoring the use of the instrument. It can
also be used as a diagnostic tool if there is a problem with the instrument.
The event log can only be viewed via the optional Analyser Data Manager software. It
cannot be viewed on the analyser screen. Applicable events are stored in the event log
automatically. No user intervention is required.
The event log can hold approximately 270 events. If the log becomes full then it begins
to overwrite the older events. This can be identified by the index field which starts from
event number 1. The log is cleared when the instrument is reset.
"Note: Please refer to section ‘12.0 Event Log’ of this operating manual for further
information.
3.1.2 Carbon Monoxide Reading (Optional - G210 ONLY)
The G210 instrument has the optional facility to use an internal CO cell (specified at the
time of manufacture). This allows the instrument to read and display carbon monoxide
readings along with N2O.
3.1.3 Oxygen Reading (Optional – G210 ONLY)
The G210 instrument has the optional facility to use an internal oxygen cell (specified at
the time of manufacture). This allows the instrument to read and display oxygen readings
along with N2O, CO2, CO.
3.1.4 Pressure Regulator Kit (G210 ONLY)
A pressure regulator kit must be used when taking gas readings to restrict the flow into
the instrument when using the G210 analyser. When sampling piped medical gases the

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pressure of the gas needs to be reduced before it is passed to the instrument. This
reduces the pressure to 100mbar suitable for the instrument. It is recommended that the
operator uses the pressure regulator kit supplied by Geotech (UK) Limited.
Warning Do NOT use the instrument at full piped pressure (maximum
pressure 300mbar).
3.1.5 Soda Lime CO2Filter
The G200 instrument must only be used with a soda lime CO2 filter attached. The filter
removes CO2if present when a reading is taken.
This filter should always be fitted when using a G200 instrument as any CO2will cross-
contaminate the N2O reading. For further information please refer to section ‘8.5 – Cross
Gas Effects’.
The life of the filter will vary depending on usage. The crystals change colour from pale
green-blue to white-grey. The filter element should be discarded when a significant
percentage of the crystals start to turn a white-grey colour see below:-
Assemble Filter and Connect to Instrument as Shown
New Filter (Pale Green-Blue) Used Filter (White-Grey)
The filters are supplied in a sealed storage bag to
improve their shelf life. The parts supplied should be
assembled as per the diagram shown. Please note the
sample filter is still in place.
"Note: A soda lime CO2filter can also be used to
zero other G Range instruments.