LANDTEC Geotech G100 Series User manual

Copyright Geotechnical Instruments (UK) Limited
G100 Range
Operating Manual
G100 CO2 0-20%
G110 CO2 0-100%
G150 CO2 0-10,000ppm
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

OMG100N1.21 G100 Range
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G100 Range OMG100N1.21
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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 G100 Analyser Range.................................................................................. 6
2.2 Instrument Components - Standard Product ........................................................ 7
3.0 G100 RANGE OPTIONAL PRODUCTS AND ACCESSORIES ................................... 8
3.1 Optional Products ............................................................................................. 8
3.1.1 Analyser Data Manager (Optional) ................................................................ 8
3.1.1.1 Event Log............................................................................................. 8
3.1.2 Temperature Probe Reading (Optional) .......................................................... 8
3.1.3 Humidity Probe Reading (Optional) ............................................................... 9
3.1.4 Oxygen Reading (Optional) .......................................................................... 9
3.2 Instrument Accessory Products......................................................................... 10
4.0 INSTRUMENT FEATURES................................................................................. 11
4.1 Physical Characteristics of the Instrument Panel ................................................. 11
4.2 Panel Key Functions........................................................................................ 12
4.3 Instrument Connection Points .......................................................................... 13
5.0 GENERAL OPERATIONAL INSTRUCTIONS .......................................................... 14
5.1 Switching the Instrument On ........................................................................... 14
5.2 Switching the Instrument Off ........................................................................... 14
5.3 Instrument Main Read Screen .......................................................................... 14
5.4 Instrument Status Icons.................................................................................. 15
5.5 Entering Data ................................................................................................ 15
5.6 Changing Between Parameters ......................................................................... 16
5.7 Memory......................................................................................................... 16
5.8 Storage......................................................................................................... 16
5.9 Main Menu..................................................................................................... 16
5.9.1 Information.............................................................................................. 17
5.9.2 Utilities.................................................................................................... 17
5.9.2.1 Time & Date ....................................................................................... 17
5.9.2.2 Contrast............................................................................................. 18
5.9.2.3 Alarms ............................................................................................... 19
5.9.2.4 Settings ............................................................................................. 19
5.9.2.5 Flow Fail ............................................................................................ 20
5.9.2.6 Logging.............................................................................................. 22
5.9.2.7 Reset ................................................................................................. 23
5.9.3 Calibration ............................................................................................... 23
5.9.4 View Data ................................................................................................ 23
5.9.4.1 Clear Reading Memory ......................................................................... 24
5.9.5 Diagnostics .............................................................................................. 24
5.10 Warning and Error Codes .............................................................................. 24
5.11 Battery/Charging ......................................................................................... 25
6.0 TAKING READINGS......................................................................................... 26
6.1 Preliminary Checks - Best Practice .................................................................... 26
6.2 Gas Measurement Process –Best Practice.......................................................... 27
6.3 Alternative Reading Methods............................................................................ 28
6.3.1 Logged Reading ........................................................................................ 28

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6.3.2 Peak Reading ........................................................................................... 28
6.3.3 Hold Reading............................................................................................ 29
7.0 CALIBRATION................................................................................................. 30
7.1 User Calibration ............................................................................................. 30
7.2 Calibration Gases ........................................................................................... 30
7.3 Calibration Set-up .......................................................................................... 30
7.4 Calibration Equipment..................................................................................... 31
7.5 Calibration Method ......................................................................................... 31
7.5.1 Zero CO2Channel: .................................................................................... 32
7.5.2 Span CO2Channel: ................................................................................... 32
7.5.3 Zero O2Channel: ...................................................................................... 33
7.5.4 Span O2Channel: ..................................................................................... 33
7.5.5 Reset Factory Settings............................................................................... 33
7.6 Last Field Calibration ...................................................................................... 34
7.7 Calibration Record .......................................................................................... 34
8.0 PROBLEM SOLVING ........................................................................................ 35
8.1 Warnings and Errors ....................................................................................... 35
8.2 Flow Fail Warning ........................................................................................... 35
8.3 Self-test Warning Messages ............................................................................. 36
8.4 User Calibration Trouble Shooting..................................................................... 37
8.5 Cross-Gas Effects ........................................................................................... 39
8.6 Error Due to CO2Solubility in Water.................................................................. 39
8.7 Hardware Reset.............................................................................................. 39
9.0 SERVICE ......................................................................................................... 40
10.0 WARRANTY POLICY ..................................................................................... 41
11.0 EVENT LOG .................................................................................................. 42
12.0 SAMPLE CERTIFICATE OF CALIBRATION...................................................... 43
13.0 IMPORTANT NOTICE TO ALL CUSTOMERS .................................................... 44
14.0 EC DECLARATION OF CONFORMITY ............................................................. 45
15.0 GLOSSARY OF TERMS –G100 RANGE........................................................... 46

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1.0 Manual Guidelines
1.1 Document History
Issued
By
Issue
Date
Change
Control ID
Issue
No.
Reason for
Change
CAM
March 2014
CR898
1.21
Updated battery
performance and charge
times in section 5.11
Updated hardware reset in
section 8.7
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 Geotech (UK) Limited on
[phone] or email [email protected].

OMG100N1.21 G100 Range
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2.0 Introduction
This manual explains how to use the instrument model types listed below:
G100 CO20-20%
G110 CO20-100%
G150 CO20-10,000ppm
Note: The instrument is a sensitive piece of scientific equipment, and should be treated as
such.
Warning
If the equipment is used in a manner not specified by the
manufacturer, the protection provided by the equipment may be
impaired.
The G100 range has been developed to incorporate the latest technology and specification
requirements, which provide the user with a fast, simple-to-use and accurate analyser. Each
model has been specifically designed to meet specific application requirements. Apparatus
intended for use in residential, commercial, pharmaceutical and light industrial environments.
2.1 The G100 Analyser Range
The analyser has the following features:
CO20-20% - G100
CO20-100% - G110
CO20-10,000ppm –G150
Options for:
- O20-100%
- Dual temperature probes 0-50oC
- Data storage and download
- Humidity sensor 0-100%
Improved accuracy on CO2readings
Quick verification of CO2
Time saving with dual temperature probes
Large data storage and user friendly software and download
Easy-to-read, large well lit display
Built-in gas moisture removal

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Applications:
IVF/Medical Research
Laboratories IAQ
Brewing Atmosphere Control
Incubators Gas mixing
2.2 Instrument Components - Standard Product
G100 Analyser
Reference:
A
Analyser
B
Operating Manual
C
Mains Battery Charger
D
Mains Battery Charger Adaptors:
Europe
US
Australia
E
Sample Tube Kit:
Sample Filter
Sample Tube

OMG100N1.21 G100 Range
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3.0 G100 Range Optional Products and Accessories
3.1 Optional Products
The G100 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 enables the user to maximise the operation of the incubator
analyser. Instrument readings and event log data may be downloaded to a PC for further
analysis and exported to other applications such as MS Excel. It enables direct
communication with the unit, features a simple download facility and is fully compatible
with the latest Microsoft operating systems.
3.1.1.1 Event Log
The G100 instruments incorporate 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 over-write 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 Temperature Probe Reading (Optional)
The G100 range of instruments has the facility to read and display two temperature
readings via optional temperature probes. When a temperature probe is fitted to one of
the two temperature ports on the top of the instrument, the display will automatically
show the current reading and a temperature probe icon will be displayed.
The display can also be changed to show a T1–T2calculation by pressing the appropriate
soft-key. The current mode of operation can be identified by normal or inverse status of
the soft-key, where inverse indicates that the option is active.
Note: The T1–T2result is not stored as part of the reading.
The operator can also choose to display the reading in either Centigrade or Fahrenheit
using the temperature option accessed from the ‘Settings’ menu.

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3.1.3 Humidity Probe Reading (Optional)
The instrument has the optional facility to use a humidity probe (specified at the time of
manufacture). This allows the instrument to read and display humidity readings from an
optional probe.
When a humidity probe is fitted, the display will change automatically to show the
current reading and a humidity probe icon will be displayed. The ‘Scroll’ keys on the
instrument panel are used to switch between the reading screens.
The humidity kit comprises of:
Humidity lead
Humidity sensor
Connection of the Humidity Sensor:
Plug the humidity sensor onto the mating connector of the transmitter or connection
cable. Make sure that the catches are aligned correctly. Tighten the knurled nut by
hand.
Note: The humidity sensor can take 30 minutes to stabilise and special handling is
required for optimum performance and stability. Please refer to the instruction
leaflet included with the humidity sensor packaging for the Humidity Standards.
3.1.4 Oxygen Reading (Optional)
The 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 CO2.
Note: Oxygen sensor stability; as the sensor is a partial pressure sensor its output
will be affected by changes in relative humidity. Although the percentage of O2
in the air is relatively constant, the relative humidity in air is variable. A unit
calibrated with dry air could cause the readout to read low by up to 0.5% by
volume.

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3.2 Instrument Accessory Products
Optional accessory and replacement parts may be purchased for the G100 from Geotech
(UK) Limited direct. Please refer to the website www.geotech.co.uk for further details on
pricing and how to order.
Ref
Description
Mfr Order
Code
A
USB Lead
USBLEAD2
B
Spare Sample Filters (pack of 5)
068296/S
C
Sample Tube Kit
G1.6
D
Hard Carry Case
050227
E
F
Temperature Probe 100mm Tip
Temperature Probe 5mm Tip
G1.3
G1.2
G
H
I
Humidity Kit:
Probe 4mm Stainless Tip with Cable
Humidity Lead and Sensor
Humidity Sensor Only
G1.9
G1.8
G1.7
J
Moisture Trap (pack of 2)
G1.12
K
Spare Calibration Gas 5% CO2
CDA7.6
L
Mains Charger including Worldwide Adaptors
073024
M
Soft Carry Case
G1.11
N
Soda Lime Filter Kit
G1.10
O
Analyser Data Manager Software
G1.4
P
Regulator and Tubing for Calibration Gas
G1.1

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4.0 Instrument Features
4.1 Physical Characteristics of the Instrument Panel
Front View: Reference:
Back View: Reference:
A
Main Read Screen
B
Soft-Keys
C
On/Off Key
D
Pump Key
E
Key 4 –Scroll Left
F
Key 8 –Scroll Down
G
Menu Key
H
Enter Key
I
Key 2 –Scroll Up
J
Key 6 –Scroll Right
K
Moisture Removal Tube
L
Serial Number
M
Instrument Stand

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4.2 Panel Key Functions
Front Panel:
Back Panel:
K
Moisture Removal Tube
Removes the moisture from the sample gas.
L
Serial Number
Unique Identification for the instrument.
Verification of the serial number will be required if
Technical Support assistance is needed.
M
Instrument Stand
Instrument stand.
Note: Do NOT attempt to remove the cover off the back of the analyser which houses
the moisture removal tube.
Do NOT cover the moisture removal tube with your hand when holding the
analyser to take readings.
Key
Description
Function
A
Main Read Screen
Start and end screen when using the instrument.
B
Soft Keys
The function of the three ‘soft-keys’ on the front of
the instrument panel are determined by menu
options taken. Functions vary from screen to
screen.
C
On/Off Key
Press the ‘On/Off’ key briefly to switch the
instrument on and off.
D
Pump Key
Press the ‘Pump’ key to start or stop the pump.
E
Scroll Left Key
Also ‘Key 4’. Enables the operator to scroll left to
display more information.
F
Scroll Down Key
Also ‘Key 8’. Enables the operator to scroll down
to display more information.
G
Menu Key
Press the ‘Menu’ key to go to the ‘Main’ menu.
Enables the operator to pre-set values and
settings. Select options from the ‘Main’ menu to
also view data and readings stored or held.
H
Enter Key
The ‘Enter’ key accepts/confirms choices made by
the operator to various functions and operations.
Also, required to confirm numeric data entry.
I
Scroll Up Key
Also ‘Key 2’. Press scroll up to view further
information on the instrument read screen.
J
Scroll Right Key
Also ‘Key 6’. Press scroll right to view further
information on the instrument read screen.

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4.3 Instrument Connection Points
Top View: Side View:
N.B. Depending on the configuration purchased, certain connectors may not be
present.
A
Top View:
Temperature 1
Temperature 1 connector measures
differential temperature –incubator and
ambient temperatures.
B
Temperature 2
Temperature 2 connector measures
differential temperature –incubator and
ambient temperatures.
Temperature connectors are fitted with
black plugs to prevent dust ingress,
remove before use. Grip connector cap
and pull upwards to release. Refit when
not in use.
C
Humidity Probe (Optional)
Humidity probe attachment point.
D
Gas Outlet
Gas outlet port used to exhaust the gas.
E
Gas Inlet
Gas inlet point used to attach the sample
tube and filter in order to take the gas
reading.
F
Side View:
USB Cable Attachment Point
Used to connect the analyser to a PC via a
USB cable to download data.
G
Mains Battery Charger Point
Used to attach the mains charger to the
analyser for charging.
5V ±0.5V(max 1000mA)
+- 5V ±0.5V(max 1000mA) +- +-

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5.0 General Operational Instructions
Note: Fully charge the unit before use when the instrument is first received or if the
instrument has been in storage for six months or more.
5.1 Switching the Instrument On
1) 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.
2) The power on self-test will then commence with a short pre-determined self-test
sequence.
3) Assuming there are no warnings to display the instrument will continue to the ‘Main
Read Screen’.
5.2 Switching the Instrument Off
1) Purge with fresh air. Run the pump for approximately 30 seconds or until the
readings have returned to normal levels.
Note: Before the instrument is switched off a clean air purge should be
performed. This ensures that the instrument is free from gas and ready for
the next measurement. This final purge is especially important for the
oxygen sensor as it may degrade if stored when contaminated with gas.
2) To switch off the instrument, press the ‘On/Off’ key briefly.
Note: If the ‘Auto Off’ utilities setting is set to ‘Yes’, the analyser will switch off
automatically after 10 minutes if not in use.
5.3 Instrument Main Read Screen
After the analyser has been switched on and the warm-up self-tests completed the
analyser will display the ‘Main Read Screen’.
G150 Screen Shown:
Main Read Screen
Soft-Keys:
Peak - Enables the operator to display the peak reading.
Store - Enables the operator to store the displayed reading for viewing/download later.
Hold - Enables the operator to hold the current reading being taken.
Note: The pump is turned off when a reading is stored.
Battery
Power
Indicator
Pump
(On)
Indicator
Symbol
Alarm Set
Temperat
ure Probe
Connecte
d
Indicator

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5.4 Instrument Status Icons
The following icons may be displayed on the instrument read screens:
Icon
Description
Battery charge state
(flashing)
< 1 hour remaining
(flashing)
Battery charging
Charged
Pump running
(flashing)
Pump stalled (Backlight turns red)
Alarm set
(flashing)
Alarm active (Backlight turns red)
USB connected to PC (flickers when transferring data)
Logging mode active (flashes when memory nearly full)
Temperature probe(s) connected
Humidity probe connected
(flashing)
Service due (every 12 months)
Service overdue
Fault/repair
Waiting
Note: A red backlight is displayed if the pump is stalled or the alarm is activated. For
further information, please refer to ‘section 5.9.2.3 Alarms’ or ‘section 5.9.2.5
Flow Fail’.
5.5 Entering Data
During normal operation the user 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 right. For example, to enter a new time 09:25:00 the user would type in 092500 using
the numeric keypad in the following sequence:-
* : : 0
* : :09
* : 0:92
* :09:25
* 0:92:50
* 09:25:00

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Press the ‘Enter’ key to confirm/accept data keyed.
Any mistakes can be corrected using the soft-key ‘Delete’ which will delete the last
character typed. Alternatively, the sequence can be re-typed 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.
5.6 Changing Between Parameters
By default, the instrument displays the ‘Main Read Screen’ (for gas measurement). This
shows the CO2reading along with the optional O2reading. The instrument will return to
this screen after power on or when returning from the menus. Key 2 ‘Arrow up’ can be
used to switch to another measurement screen, i.e. temperature or humidity. Continue to
press the ‘Scroll’ key to return to the ‘Main Read Screen’.
5.7 Memory
The memory should not be used as a permanent storage medium and any important data
should be transferred to a more permanent storage medium as soon as possible. The
instrument should not be stored for prolonged periods with valuable data in its memory.
5.8 Storage
When not in use the instrument should be kept in a clean, dry and warm environment,
such as an office. It should be stored flat with the stand folded away which helps prolong
the life of the O2cell.
Note: Fully charge the instrument before use if instrument has been stored for six
months or more.
5.9 Main Menu
The ‘Main Menu’ 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/information
stored in the instrument.
1) Press the ‘Menu’ key on the front of the instrument panel and the following screen is
displayed:
Main Menu
2) Press the soft-key ‘Exit’ to exit the ‘Main’ menu.

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5.9.1 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.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 1’ to display general information about the instrument.
Information Screen
5.9.2 Utilities
The ‘Utilities’ option enables the operator to configure instrument settings prior to taking
readings.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu and the following screen is displayed:
Utilities Menu
5.9.2.1 Time & Date
The ‘Time and Date’ option enables the operator to check or set the instrument’s
internal clock. The current time/date are appended to every stored reading.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu.
3) Press ‘Key 1 – Time & Date’ and the ‘Set Time & Date’ menu is displayed:

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Set Time & Date
4) Press ‘Key 1’ to change the time or press ‘Key 2’ to change the date. Type the
time or date using the numeric keypad followed by the ‘Enter’ key. The
instrument will not allow invalid times or dates to be entered.
Note: The clock will need to be manually adjusted to cope with daylight saving
changes or changes when crossing time zones.
5.9.2.2 Contrast
The ‘Contrast’ option enables the operator to adjust the instrument screen contrast to
compensate for changes in ambient temperature. The default setting is 0.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu.
3) Press ‘Key 2’ to select the instrument panel contrast settings and the following
screen is displayed:
Adjust Contrast
4) Press ‘Key 3 - Scroll Left’ and ‘Key 6 - Scroll Right’ to adjust the value displayed.
5) Press the soft-key ‘Accept’ or ‘Reject’ accordingly to accept or reject the changes.
Note: The manually set contrast setting is retained when the instrument is
switched off.

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5.9.2.3 Alarms
The G100 range of instruments has the facility to set rising or falling alarms for the two
main gas channels, CO2 and O2 (if selected as an option). The alarms for each channel
can be enabled or disabled independently via the ‘Alarms’ menu option.
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. The beeper is sounded until the gas level has recovered beyond the trigger
point.
Rising alarms are triggered when the gas level exceeds the maximum value entered
by the user.
Falling alarms are triggered when the gas level falls below the minimum value
entered by the user.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu.
3) Press ‘Key 3’ to select alarm settings and the following screen is displayed:
Current Alarms
4) Press ‘Key 1’ to maintain CO2 alarm and ‘Key 2’ to maintain O2 alarm.
5) Select from the following:
1-Enabled/Disabled Toggle between disabled and enabled alarm status.
2-Max Sets the upper limit alarm setting.
3-Min Sets the minimum alarm setting. The default is 0.
6) Select the option to modify followed by the soft-key ‘Accept’ or ‘Reject’.
5.9.2.4 Settings
The ‘Settings’ option enables the operator to maintain information with regards to
taking samples and readings.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu.
3) Press ‘Key 4’ to select settings and the following screen is displayed:

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Settings
4) The following instrument settings may be maintained:
1-Prompt ID: - Press ‘Key 1’ to prompt for ID code for each sample reading,
answer Yes or No accordingly.
2-Temperature: - Press ‘Key 2’ to enter the default unit temperature, choosing
from OC or OF.
3-Date: - Press ‘Key 3’ to switch the date format between dd/mm/yy
and mm/dd/yy formats.
4-Auto Off: - Press ‘Key 4’ to auto switch off the instrument when not in
use. Toggle between Auto Off: Yes or No. If set to Yes, the
instrument will switch off after 10 minutes if not in use.
5.9.2.5 Flow Fail
The ‘Flow Fail’ option enables the operator to adjust the instrument flow fail detection
point should it fail in normal operation with a clean filter.
The instrument’s internal pump can be stalled when pulling against a vacuum or
through a blocked filter. This is indicated by a flashing pump icon and a red screen;
to prevent damage to the pump, the pump will switch off after a few seconds.
Press the ‘Pump’ key again to remove the flashing pump icon.
Note: Dirty or discoloured filters should be changed before use. Filters that have
drawn in water should be changed immediately to prevent damage to the
instrument.
1) From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
2) Press ‘Key 2’ to display the ‘Utilities’ menu.
3) Press ‘Key’ 5 to select flow fail and the following screen is displayed:
Adjust Flow Fail