Geotech G200 Operating Manual
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Geotech G200 Operating Manual

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G200
RANGE
G200 AND G210 OPERATING MANUAL

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Summary of Contents for Geotech G200

  • Page 1 G200 RANGE G200 AND G210 OPERATING MANUAL...

  • Page 2: Table Of Contents

    Introduction ............................6 The G200 Analyser ..........................6 The G210 Analyser ..........................7 Instrument Components - Standard Product ..................8 G200 Range Optional Products and Accessories ..................9 Optional Products ..........................9 Analyser Data Manager (Optional) ...................... 9 Event Log ............................. 9 Carbon Monoxide Reading (Optional –...
  • Page 3 Monitor (G200 ONLY)........................30 Taking Readings ............................. 35 Preliminary Checks - Best Practice ..................... 35 G200 Gas Measurement Process – Best Practice ................36 G210 Gas Measurement Process – Best Practice ................37 Calibration ............................. 39 User Calibration ..........................39 Calibration Gases ..........................
  • Page 4 G 2 0 0 R A N G E Page 4 of 61 Operating Manual Warnings and Errors .......................... 45 Under and Over Range Codes ......................45 Self-test Warning Messages....................... 46 User Calibration Trouble Shooting ..................... 48 User Calibration Explained: ......................48 Cross-Gas Effects ..........................

  • Page 5: Manual Guidelines

    G 2 0 0 R A N G E Page 5 of 61 Operating Manual MANUAL GUIDELINES Safety Related Information Information in this manual that may affect the safety of users and others will be in a box identical to this one. Failure to follow this information may result in physical injury which in some cases could be fatal.

  • Page 6: Introduction

    Filter Current Value TWA Value The G200 analyser is specifically designed to safety check background zone levels of N O (0- 1,000ppm) in medical applications. This instrument measures the long term exposure to N O gas along with the TWA (time weighted average), leak detection for N O storage.

  • Page 7: The G210 Analyser

    G 2 0 0 R A N G E Page 7 of 61 Operating Manual  EH40 occupational exposure limits calculated (TWA) – applicable to the UK only  Leak detection  User settable alarms  Data download for graphing and reporting ...

  • Page 8: Instrument Components - Standard Product

    R A N G E Page 8 of 61 Operating Manual Instrument Components - Standard Product Reference: Analyser Mains Battery Charger Mains Battery Charger Adaptors: Europe Australia Soda Lime CO Filter (G200 Only) Operating Manual OMG200N Iss.04 www.geotechuk.com © QED Environmental Systems Ltd.

  • Page 9: G200 Range Optional Products And Accessories

    G200 RANGE OPTIONAL PRODUCTS AND ACCESSORIES 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 QED on +44(0)333 800 0088 or email sales@qedenv.co.uk.

  • Page 10: Oxygen Reading (Optional - Enhancement For G210 Only)

    The G200 instrument must only be used with a soda lime CO filter attached. The filter removes CO present when a reading is taken. This filter should always be fitted when using a G200 instrument as any CO will cross-contaminate the N O reading.

  • Page 11: Assembly And Connection

    G 2 0 0 R A N G E Page 11 of 61 Operating Manual Assembly and connection 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. Note: A soda lime CO filter can also be used to zero other G Range instruments.

  • Page 12: Instrument Accessory Products

    R A N G E Page 12 of 61 Operating Manual Instrument Accessory Products Optional accessory and replacement parts may be purchased for the G200 range from QED direct. Please refer to the website www.qedenv.co.uk for further details on pricing and how to order.

  • Page 13: Instrument Features

    G 2 0 0 R A N G E Page 13 of 61 Operating Manual INSTRUMENT FEATURES Physical Characteristics of the Instrument Panel Front View: Reference: A) Main Read Screen B) Soft keys C) On/Off key D) Pump key E) Key 4 – scroll left F) Key 8 –...

  • Page 14: Panel Key Functions

    G 2 0 0 R A N G E Page 14 of 61 Operating Manual Panel Key Functions Description Function Main 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 are determined by menu options taken.

  • Page 15: Instrument Connection Points

    G 2 0 0 R A N G E Page 15 of 61 Operating Manual Instrument Connection Points Top View: Side View: Description Function Gas Inlet Gas inlet point used to attach the sample tube and filter in order to take the gas reading Gas Outlet Gas outlet port used to exhaust the gas USB Port...

  • Page 16: General Operational Instructions

    Switching the Instrument On To switch on the instrument, press the ‘On/Off’ key briefly. There will be a short beep and a slight pause followed by the Geotech logo. The power on self-test will commence. Assuming there are no warnings to display the instrument will continue to the ‘Main Read Screen’.

  • Page 17: Alpha-Numeric Data

    G 2 0 0 R A N G E Page 17 of 61 Operating Manual 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.

  • Page 18: Changing Between Parameters

    G 2 0 0 R A N G E Page 18 of 61 Operating Manual information, please refer to section Alarms Flow Fail. Changing Between Parameters By default, the instrument displays the ‘Main Read Screen’ (for gas measurement). The instrument will return to this screen after power on or when returning from the menus.

  • Page 19: Instrument Main Read Screen

    G 2 0 0 R A N G E Page 19 of 61 Operating Manual Instrument: Input: 5Vdc ± 0.5V (max 1000mA) Power Supply: Input: 100 -240Vac 60/50Hz 120mA Output: 5Vdc 1000mA (5VA) Note: A full charge will take approximately 4 hours. Typically, a fully charged battery will last 10- 12 hours.

  • Page 20: Store Reading

    The ‘Site’ (top level ID) and ‘ID’ (second level ID) fields refer to the identifier that the operator gives to a reading set before it is stored. The G200 and G210 allows the operator to enter up to 16 alpha- numeric characters which are split into two parts (to help manage the data) called ‘Site’...

  • Page 21: Soft-Keys

    Note: Unless otherwise stated the functions and menus are the same for both the G200 and G210 instrument. Press the ‘Menu’ key on the front of the instrument panel and the following screen is displayed: Screen 5 - Main menu Press the soft-key ‘Exit’...

  • Page 22: Information

    G 2 0 0 R A N G E Page 22 of 61 Operating Manual Information The ‘Information’ option enables the operator to display information such as instrument type, serial number, current software version, service due date and the dates of the last factory and user calibrations.
  • Page 23 Note: The manually set contrast setting is retained when the instrument is switched off. Alarms The G200 range of instruments has the facility to set rising or falling alarms for the main gas channels. The alarms for each channel can be enabled or disabled independently via the ‘Alarms’ menu option.
  • Page 24 G 2 0 0 R A N G E Page 24 of 61 Operating Manual Once enabled these alarms become active in the ‘Main Read Screen’; this is indicated by a bell icon. If an alarm is triggered the screen turns red and a flashing bell icon is displayed.
  • Page 25 1 – Prompt ID: Press ‘Key 1’ to prompt for ID code for each sample reading, answer ‘Yes’ or ‘No’ accordingly.  * – Temperature: This option is not available on the G200 range of instruments.  3 – Date: Press ‘Key 3’ to switch the date format between dd/mm/yy and mm/dd/yy formats.
  • Page 26 Flow fail alarm? Blocked or excessive restriction Press pump cancel alarm Refer to Section 8.0 Problem Solving Decrease displayed value by 1 Accept Flow Fail Set-up Process Best Practice G200 Range OMG200N Iss.04 www.geotechuk.com © QED Environmental Systems Ltd.
  • Page 27 G 2 0 0 R A N G E Page 27 of 61 Operating Manual Logging Data logging mode can be started or stopped via ‘Key 6 - Logging’ accessed from the ‘Utilities’ menu. Press ‘Key 4 – Start/Stop Logging’ to start and stop data logging. Whilst in data logging mode the instrument will automatically record data at the preset intervals, including running the pump for a preset time.

  • Page 28: Calibration

    Calibration The G200 range of instruments is fully calibrated during manufacture and when returned for service. However, to improve accuracy between services a user/field calibration can be performed. Note: For further information please refer to section Calibration of this manual.
  • Page 29 G 2 0 0 R A N G E Page 29 of 61 Operating Manual  1 – Delete All: Enables the operator to delete all the readings stored,  2 – Filter: Used to refine/filter the range of readings displayed by ID or date ranges. Press between two dates, after a date, before a date or all dates.

  • Page 30: Diagnostics

    Note: For further information contact Technical Support at QED on +44(0)330 800 0088 or email technical@qedenv.co.uk. Monitor (G200 ONLY) The ‘Monitor’ option enables the operator of a G200 instrument to choose from the following three monitoring modes. Screen 18 - Monitor mode From the ‘Main Read Screen’...
  • Page 31 G 2 0 0 R A N G E Page 31 of 61 Operating Manual Person ‘Person’ enables the operator to monitor in personal safety mode. This mode automatically stores an average N O reading every 15 minutes. This is used to calculate and display an eight hour TWA (time weighted average) reading which is the operator’s personal exposure level to N O over their working day (often called OEL - occupational exposure limit).
  • Page 32 G 2 0 0 R A N G E Page 32 of 61 Operating Manual actual N O levels, eg greater than 300ppm. As with previous modes it is possible using Analyser Data Manager to change the ‘Site’ and ‘ID’ fields to ‘Site’...
  • Page 33 G 2 0 0 R A N G E Page 33 of 61 Operating Manual Notes:  The TWA, Average and OEL checkbox options in ADM are columns of data that are calculated when the data is displayed, based on the data previously downloaded and stored from the instrument.
  • Page 34 G 2 0 0 R A N G E Page 34 of 61 Operating Manual Figure 4 - Example of Data recorded on the Analyser in Person mode, and then ADM calculating the TWA and Average Columns OMG200N Iss.04 www.geotechuk.com ©...

  • Page 35: Taking Readings

    Sample Step 2 time and Filter date set Step 3 Attach the soda lime CO2 filter (G200 model only). Step 3 Step 4 Attach the pressure regulator (G210 model Attach the only). Soda Lime...

  • Page 36: G200 Gas Measurement Process - Best Practice

    From the ‘Main’ menu select the mode in which you wish to operate the instrument. Note: Although the G200 analyser is intended for use in a specific mode, i.e. Person, Area or Leak, the analyser may be used to take readings without a mode specified. For more information please refer to section G210 Gas Measurement Process –...

  • Page 37: G210 Gas Measurement Process - Best Practice

    G 2 0 0 R A N G E Page 37 of 61 Operating Manual If operating in ‘Person’ or ‘Area’ mode readings are continuously taken by the instrument. To stop monitoring the operator must select the appropriate ‘soft-key’ and enter the required stop code.
  • Page 38 G 2 0 0 R A N G E Page 38 of 61 Operating Manual Connect the sample tube, if relevant, from the sample point to the inlet port of the instrument, ensuring the filter is seated correctly. If auto-logging is required select the ID codes. If auto-logging is not required, press the pump key to draw a sample, stop the pump and press the soft-key ‘Store’...

  • Page 39: Calibration

    CALIBRATION User Calibration The G200 range of instruments is fully calibrated during manufacture and when returned for service. However, to improve accuracy between services a user/field calibration can be performed. This section sets out the correct procedures to achieve an accurate user calibration.

  • Page 40: Calibration Equipment

    G 2 0 0 R A N G E Page 40 of 61 Operating Manual Calibration Equipment The diagram below displays the regulator and tubing equipment for user calibration:  Certified calibration gas in 58 litre gas canisters is supplied with the QED calibration kit. Please refer to the QED website www.qedenv.co.uk for further information.

  • Page 41: Calibration Method

    G 2 0 0 R A N G E Page 41 of 61 Operating Manual Calibration Method Before you begin ensure the unit is turned on and allowed to stabilise at its working temperature before performing any of the calibration options, this will typically be 15-20 minutes. To achieve the processes set out in this section, press ‘Key 3 –...

  • Page 42: Span Channels

    Calibration Record The G200 instruments have the facility to log user calibrations via the ‘Event Log’. This can be used as an aid in ensuring that gas measurements are valid and accurate.

  • Page 43: Recommended Gases For Calibration

    Recommended Gases for Calibration The calibration gas recommended depends on the desired operation and concentration of target gas. The following table outlines the recommended gases that can be used for calibrating each of the measurements. Instrument G200 G210 Application Leak O 50%, O...

  • Page 44: G200 Range Calibration - Best Practice

    G 2 0 0 R A N G E Page 44 of 61 Operating Manual G200 Range Calibration – Best Practice Main menu Attach tubing and Go on to the Zero with N START select Field calibration gas Zero gas...

  • Page 45: Problem Solving

    G 2 0 0 R A N G E Page 45 of 61 Operating Manual 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 QED on +44(0)330 800 0088 or email technical@qedenv.co.uk.

  • Page 46: Self-Test Warning Messages

    G 2 0 0 R A N G E Page 46 of 61 Operating Manual Self-test Warning Messages The following warnings may be displayed during the self-test period when the instrument is switched Warning Description Check Memory The instrument only has space to store less than 50 readings before it is full.
  • Page 47 G 2 0 0 R A N G E Page 47 of 61 Operating Manual Change Pump The pump has exceeded its recommended run-time and should be changed. The instrument will need to be returned to the manufacturer for service. Change Battery The Lithium Ion battery has exceeded its recommended life-time or number of charge cycles and should be changed.

  • Page 48: User Calibration Trouble Shooting

    G 2 0 0 R A N G E Page 48 of 61 Operating Manual User Calibration Trouble Shooting Error Remedy User Zero failed A possible reason for this is that the instrument is trying to zero to a level which is outside the predetermined range set when the unit was calibrated at the factory.
  • Page 49 G 2 0 0 R A N G E Page 49 of 61 Operating Manual User calibration has two operations and each may be performed individually, however for a complete user calibration both must be completed. Factory Calibration When the instrument is factory calibrated, a stable gas curve is generated (see curve 1 on Graph 1 - User calibration explained).

  • Page 50: Cross-Gas Effects

    G 2 0 0 R A N G E Page 50 of 61 Operating Manual Typical Zero Gas Purge Time 0.09 0.08 0.07 display reads 0.0% 0.06 0.05 0.04 0.03 w ait to Start Zero calibration 0.02 0.01 Time (mm:ss) Graph 2 - Typical zero gas purge times Cross-Gas Effects Cell...
  • Page 51 G 2 0 0 R A N G E Page 51 of 61 Operating Manual for 10 seconds will power off the instrument. Once this time has elapsed, the instrument can be powered on as normal. Note: Performing a hardware reset may cause loss or corruption of currently stored data including the time/date.

  • Page 52: Service

    Page 52 of 61 Operating Manual SERVICE The G200 and G210 instruments should be regularly serviced to ensure correct operation and accurate readings. The manufacturer recommends a full service and recalibration every 12 months. Depending on usage the O cell should be replaced every 2-3 years. The CO cell will require replacement after 1 or 2 years again depending on usage.

  • Page 53: Warranty Policy

    G 2 0 0 R A N G E Page 53 of 61 Operating Manual WARRANTY POLICY OMG200N Iss.04 www.geotechuk.com © QED Environmental Systems Ltd.
  • Page 54 G 2 0 0 R A N G E Page 54 of 61 Operating Manual OMG200N Iss.04 www.geotechuk.com © QED Environmental Systems Ltd.

  • Page 55: Event Log

    G 2 0 0 R A N G E Page 55 of 61 Operating Manual EVENT LOG The following events are recorded in the instrument’s event log. The event log can only be downloaded using the additional Analyser Data Manager software. Please refer to the Analyser Data Manager operating manual for further details.

  • Page 56: Weee Compliance

    G 2 0 0 R A N G E Page 56 of 61 Operating Manual WEEE COMPLIANCE WEEE COMPLIANT The wheelie bin symbol now displayed on equipment supplied by QED signifies that the apparatus must not be disposed of through the normal municipal waste stream but through a registered recycling scheme.

  • Page 57: Eu Declaration Of Conformity

    G 2 0 0 R A N G E Page 57 of 61 Operating Manual EU DECLARATION OF CONFORMITY OMG200N Iss.04 www.geotechuk.com © QED Environmental Systems Ltd.

  • Page 58: Glossary Of Terms

    ‘Area’ is the soft-key used to begin operating in area or room monitoring mode. This mode automatically stores a rolling average N O reading every 15 minutes. G200 only. Backlight LED illumination of the LCD display, turns off after 30 seconds, pressing any key relights the display.
  • Page 59 This extends the range of the N2O sensor up to 10,000ppm and speeds up the response time to enable it to indicate the current level of N2O. G200 only. LCD display Liquid Crystal Display. Fitted to the front panel of the analyser.
  • Page 60 Soda lime CO filter kit Removes CO when taking a reading. Must be fitted on the G200 model. Span The point at which the gas analyser is calibrated when a known concentration of the target gas is present. Time Weighted Average.
  • Page 61 G 2 0 0 R A N G E Page 61 of 61 Operating Manual from the date of shipment to the user and is subject to the recommended service and recalibration requirements. Zero The point at which the gas analyser is calibrated when there is none of the target gas present.

This manual is also suitable for:

G210

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