G100 RANGE
G100, G110, AND G150 OPERATING MANUAL
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Table of Contents
Manual Guidelines ................................................................................................................................... 5
Safety Related Information .................................................................................................................. 5
Hyperlinks ............................................................................................................................................ 5
Notes ................................................................................................................................................... 5
Introduction ............................................................................................................................................ 6
The G100 Analyser Range .................................................................................................................... 6
Applications ......................................................................................................................................... 7
Instrument Components - Standard Product ....................................................................................... 7
G100 Range Optional Products and Accessories ..................................................................................... 8
Optional Products ................................................................................................................................ 8
Analyser Data Manager (Optional) ...................................................................................................... 8
Event Log ............................................................................................................................................. 8
Temperature Probe Reading (Optional)............................................................................................... 8
Humidity Probe Reading (Optional) ..................................................................................................... 8
Connection of the Humidity Sensor ................................................................................................. 9
Oxygen Reading (Optional) .................................................................................................................. 9
Instrument Accessory Products ......................................................................................................... 10
Instrument Features .............................................................................................................................. 11
Physical Characteristics of the Instrument Panel ............................................................................... 11
Panel Key Functions ........................................................................................................................... 12
Instrument Connection Points ........................................................................................................... 13
General Operational Instructions .......................................................................................................... 14
Switching the Instrument On ............................................................................................................. 14
Switching the Instrument Off ............................................................................................................. 14
Instrument Main Read Screen ........................................................................................................... 14
Soft Keys ......................................................................................................................................... 14
Instrument Status Icons ..................................................................................................................... 15
Entering Data ..................................................................................................................................... 15
Changing Between Parameters.......................................................................................................... 16
Memory ............................................................................................................................................. 16
Storage ............................................................................................................................................... 16
Main Menu ........................................................................................................................................ 16
Information .................................................................................................................................... 16
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Utilities ........................................................................................................................................... 17
Calibration ...................................................................................................................................... 23
View Data ....................................................................................................................................... 23
Diagnostics ..................................................................................................................................... 24
Warning and Error Codes................................................................................................................... 24
Battery/Charging................................................................................................................................ 24
Taking Readings ..................................................................................................................................... 26
Preliminary Checks - Best Practice ..................................................................................................... 26
Gas Measurement Process – Best Practice ........................................................................................ 27
Alternative Reading Methods ............................................................................................................ 28
Logged Reading .............................................................................................................................. 28
Peak Reading .................................................................................................................................. 28
Hold Reading .................................................................................................................................. 29
Calibration ............................................................................................................................................. 30
User Calibration ................................................................................................................................. 30
Calibration Gases ............................................................................................................................... 30
Calibration Set-up .............................................................................................................................. 30
Calibration Equipment ....................................................................................................................... 31
Calibration Method ............................................................................................................................ 32
Reset Factory Settings .................................................................................................................... 32
Zero CO2 Channel ........................................................................................................................... 32
Span CO2 Channel .......................................................................................................................... 33
Zero O2 Channel ............................................................................................................................. 33
Span O2 Channel............................................................................................................................. 33
Last Field Calibration .......................................................................................................................... 34
Calibration Record ............................................................................................................................. 34
Problem Solving ..................................................................................................................................... 35
Warnings and Errors .......................................................................................................................... 35
Under and Over Range Codes ........................................................................................................ 35
Flow Fail Warning ........................................................................................................................... 35
Self-test Warning Messages ........................................................................................................... 36
User Calibration Trouble Shooting ..................................................................................................... 37
User Calibration Explained ............................................................................................................. 37
Cross-Gas Effects ............................................................................................................................... 39
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Error Due to CO2 Solubility in Water .................................................................................................. 39
Hardware Reset ................................................................................................................................. 39
Service ................................................................................................................................................... 40
User Serviceable Parts ....................................................................................................................... 40
Cleaning ............................................................................................................................................. 40
Warranty Policy ..................................................................................................................................... 41
Event Log ............................................................................................................................................... 43
WEEE Compliance ................................................................................................................................. 44
EU Declaration of Conformity................................................................................................................ 45
Glossary of Terms .................................................................................................................................. 46
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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.
Hyperlinks
Hyperlinks to other sections of this manual, websites or email addresses are in the following format:
www.geotechuk.com
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 QED on +44(0)333 800 0088 or
email technical@qedenv.co.uk.
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INTRODUCTION
This manual explains how to use the instrument model types listed below:
G100 CO2 0-20%
G110 CO2 0-100%
G150 CO2 0-10,000ppm
Note: The instrument is 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 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.
The G100 Analyser Range
The analyser has the following features:
CO
2
0-20% - G100
CO
2
0-100% - G110
CO
2
0-10,000ppm – G150
Options for:
o
O
2
0-100%
o
Dual temperature probes 0-50
o
C
o
Data storage and download
o
Humidity sensor 0-100%
Improved accuracy on CO
2
readings
Quick verification of CO
2
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
Instrument Components - Standard Product
Reference:
A)
Analyser
D)
Mains Battery Charger Adaptors: (EU, US, AU)
B)
Operating manual
E)
Sample tube kit
C)
Mains battery charger
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G100 RANGE OPTIONAL PRODUCTS AND ACCESSORIES
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 QED on
+44(0)330 800 0088 or email sales@qedenv.co.uk.
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.
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 Event Log of this operating manual for further information.
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 – T2 calculation 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 – T2 result 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.
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
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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.
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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Instrument Accessory Products
Optional accessory and replacement parts may be purchased for the G100 from QED direct. Please
refer to the website www.geotechuk.com for further details on pricing and how to order.
Ref
Description
Part Number
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
Temperature Probe 100mm Tip
G1.3
F
Temperature Probe 5mm Tip
G1.2
G
Humidity Lead and Sensor
G1.8
H
Moisture Trap (pack of 2)
G1.12
I
Spare Calibration Gas 5% CO2
CDA7.6
J
Mains Charger including Worldwide Adaptors
073024
K
Soft Carry Case
G1.11
L
Soda Lime Filter Kit
G1.10
M
Analyser Data Manager Software
G1.4
N
Regulator and Tubing for Calibration Gas
G1.1
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INSTRUMENT FEATURES
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
A
B
C
D
E
F
G
H
I
J
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Panel Key Functions
Note: Do NOT attempt to remove the cover off the back of the analyser which houses the
moisture removal tube.
Note: 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.
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.
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Instrument Connection Points
Top View:
Side View:
Key
Description
Function
A
Temperature 1
Temperature 1 connector measures temperature –
incubator and ambient temperatures.
B
Temperature 2
Temperature 2 connector measures temperature –
incubator and ambient temperatures
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
USB Port
Used to connect the analyser to a PC via a USB cable to
download data
G
Charger Port
Used to attach the main charger to the analyser for
charging
Note: 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.
Note: Depending on the configuration purchased, certain connectors may not be present.
5V ± 0.5V(max 1000mA)
+-
5V ± 0.5V(max 1000mA)
+- +-
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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.
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 then commence with a short pre-determined self-test sequence.
Assuming there are no warnings to display the instrument will continue to the ‘Main Read
Screen’.
Switching the Instrument Off
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.
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.
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:
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
Pump (On)
Indicator
Alarm Set
Temperature
Probe
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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 the Alarms or Flow Fail sections.
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
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 reentered.
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Changing Between Parameters
By default, the instrument displays the ‘Main Read Screen’ (for gas measurement). This shows the CO2
reading along with the optional O2 reading. 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’.
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.
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 O2 cell.
Note: Fully charge the instrument before use if instrument has been stored for six months or
more.
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.
Press the ‘Menu’ key on the front of the instrument panel and the following screen is displayed:
Screen 1 - Main menu
Press the soft-key ‘Exit’ to exit the ‘Main’ menu.
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.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 1’ to display general information about the instrument.
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Screen 2 - Information
Utilities
The ‘Utilities’ option enables the operator to configure instrument settings prior to taking readings.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu and the following screen is displayed:
Screen 3 - Utilities menu
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.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu.
Press ‘Key 1 – Time & Date’ and the ‘Set Time & Date’ menu is displayed:
Screen 4 - Set time & date
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
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changes when crossing time zones.
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.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu.
Press ‘Key 2’ to select the instrument panel contrast settings and the following screen is
displayed:
Screen 5 - Adjust contrast
Press ‘Key 3 - Scroll Left’ and ‘Key 6 - Scroll Right’ to adjust the value displayed.
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.
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.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu.
Press ‘Key 3’ to select alarm settings and the following screen is displayed:
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Screen 6 - Current alarms
Press ‘Key 1’ to maintain CO
2
alarm and ‘Key 2’ to maintain O2 alarm.
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.
Select the option to modify followed by the soft-key ‘Accept’ or ‘Reject’.
Settings
The ‘Settings’ option enables the operator to maintain information with regards to taking samples and
readings.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu.
Press ‘Key 4’ to select settings and the following screen is displayed:
Screen 7 - Settings
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
O
C 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
‘Yes’ or ‘No’. If set to Yes, the instrument will switch off after 10 minutes if not in use.
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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.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 2’ to display the ‘Utilities’ menu.
Press ‘Key’ 5 to select flow fail and the following screen is displayed:
Screen 8 - Adjust flow fail
Use the ‘Scroll’ keys to adjust the value displayed. The larger the value, the less sensitive the
flow fail detection is.
Press soft-key ‘Accept’ or ‘Reject’ accordingly.
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Flow Fail Set-up Process – Best Practice
Increase
the
displayed
value by 2
Flow fail
alarm?
Flow fail
alarm?
No
Wait 5 seconds
No
Block gas inlet
Flow fail
alarm?
Wait 5 seconds
No
Block gas inlet
Flow fail
alarm?
Wait 5 seconds
Accept
Blocked or
excessive
restriction
No
Wait 5 seconds
Flow Fail Set-up Process – Best Practice
G100 Range
Decrease
the
displayed
value by 1
Increase
the
displayed
value by 3
Decrease
the
displayed
value by 1
Decrease
the
displayed
value by 1
END
Refer to Section 8.0
Problem Solving
START
Turn pump
on
Turn pump
on
Press pump
cancel
alarm
Yes Yes
Press pump
cancel
alarm
Yes
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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 pre-set intervals
including running the pump for a pre-set time.
Active logging mode is indicated on the ‘Main Read Screen’ by the icon.
The operator is able to edit the default ID, pump run-time, interval and start/stop logging.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 6’ to display the ‘Logging’ menu and the following screen is displayed:
Screen 9 - Logging menu
Select the desired option by pressing ‘Keys 1 to 4’. Then enter the appropriate setting using the
keypad followed by the ‘Enter’ key.
1 – Every 00 mins: Press ‘Key 1’ to enter the time in minutes for the timeframe between
sample readings. The interval controls the reading frequency in minutes, i.e. every 10
minutes.
2 – Pump 00 secs: Press ‘Key 2’ to enter the time in seconds for the length of time you wish
the pump to run when taking a sample reading. The pump run-time is the time in seconds for
which the pump runs prior to the reading being stored. This figure will also need to take into
account the length of sample tube and the volume of the sample gas. For example, there is
little point setting a pump run-time of 10 seconds if it takes 30 seconds to draw in a new
sample.
3 – ID 00000000: Press ‘Key 3’ to create an 8-digit numeric ID Code.
4 – Start/Stop Logging: Press ‘Key 4’ to start and stop data logging.
Note: Data logging mode is automatically stopped when the instrument is switched off or if the
logging parameters are edited.
Reset
The instrument can be reset by pressing ‘Key 7 - Reset’ accessed via the ‘Utilities’ menu. Selecting this
option will clear all user settings and any stored data including the event log.
A confirmation code (12345678) must be entered to confirm that a reset is really required.
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Calibration
The G100 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 Calibration of this manual.
View Data
The ‘View Data’ option enables the operator to view the stored readings.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 4’ to view stored data readings and the following screens are displayed:
Screen 10 - View data 1
Screen 11 - View data 2
Press ‘Key 4 - Scroll Left’ and ‘Key 6 - Scroll Right’ to move through the stored readings either
forwards or backwards. Press ‘Key 2 - Scroll Up’ and ‘Key 8 - Scroll Down’ to switch between the
first (CO2, O2 & Baro) and second (T1, T2 & humidity) group of reading parameters.
Press the soft-key ‘More’ to refine or filter the readings to view.
Screen 12 - Soft-key 'More'
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.
3 – Go to: Enables the operator to jump to the first or last reading in the memory or any other
reading.
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Clear Reading Memory
The ‘Clear Reading Memory’ function enables the user to check how many readings have previously
been taken and clear them if necessary.
Note: Before readings are actually deleted a caution message is displayed; once readings have
been deleted they cannot be recovered.
The instrument can store up to 1000 readings. The reading structure is fixed and may contain optional
parameters not activated for your particular instrument configuration, i.e. oxygen, temperature and
humidity.
Once the reading memory is full it is not possible to store any more readings. When full and the
‘Store’ key is pressed or data logging is activated the instrument will show a brief message stating that
the memory is full and that no further data will be recorded.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 4’ to view data.
To clear the readings press the soft-key ‘More’ followed by ‘Key 1 - Delete all’.
Diagnostics
The ‘Diagnostics’ option enables QED Technical Support to identify and resolve issues with the
instrument and readings. If required, the operator may be asked to confirm the diagnostics displayed.
From the ‘Main Read Screen’ press the ‘Menu’ key on the instrument panel.
Press ‘Key 5’ to view diagnostics.
Note: For further information contact Technical Support at QED on +44(0)330 800 0088 or email
technical@qedenv.co.uk.
Warning and Error Codes
When switched on the instrument will perform a predetermined self-test sequence taking
approximately 30 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 Problem Solving of this manual.
Battery/Charging
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.
The battery used in the instrument is 2.6 Ah Lithium-Ion cell. The instrument must be charged using
the power supply supplied with your instrument. The power supply supplied is intended for indoor
use only. Please ensure adequate ventilation whilst charging.
Note: The instrument cannot be powered or charged via the USB connector.
Note: When plugged into the power supply the instrument will power on and display charging.
When complete the display will change to show that the instrument is charged. To switch the
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instrument ON whilst charging or charged is displayed, the operator will need to press and hold
the power key briefly.
Note: Once the instrument is fully charged, the power supply should be disconnected from the
instrument.
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 1012 hours.
When the instrument is already powered on, the operation is slightly different as the battery icon
changes to a flashing plug symbol. This will stop flashing when the charge is complete.
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TAKING READINGS
Preliminary Checks - Best Practice
Always ensure that the exhaust gases emerge in a safe manner into a well ventilated area.
Instrument
has correct
time and
date set
Preliminary Checks
(G100 - Best Practice)
Battery has
good
charge
Start
Take readings
Step 1
Fit the
required
filters
Memory has
sufficient
space
Main gases
verified
Check span
calibration
Step 2
Step 3
Step 6
Step 7
Step 4
Step 5
Prior to use, it is good practice to ensure that:
Step 1 The instrument has the correct time and date set.
Step 2 Fit the sample filter checking that it is clean and dry. If
experiencing condensation in sample line or the sample filter
keeps getting blocked, fit the moisture trap or similar at takeoff point.
Step 3 The battery has a good charge (minimum 25% charge,
even if only a few readings are required).
Step 4 The memory has sufficient space available.
Step 5 The main gases have been verified with zero gas
concentration present.
Step 6 If necessary check the span calibration with a known
concentration calibration-check gas.
Step 7 Take readings.
Do protect the instrument from strong direct sunlight which
will quickly raise the temperature of the instrument beyond its
operating range and the LCD display will appear almost black.
The contrast setting cannot then alter the contrast.
Do remember to always use the sample filter! If the sample
filter becomes flooded, change it and ensure all sample tubes
are clean and dry before re-use.
Do not place the instrument against anything hot as this may
cause excessive internal temperatures which can lead to
erroneous readings.
Do not get the instrument wet, for example exposure to rain.
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Gas Measurement Process – Best Practice
Depending on preferences the exact reading procedure can change.
The following method is considered best practice and when followed correctly will allow quick and
consistent readings to be recorded.
When the instrument is first switched on it should be purged with fresh air and allowed to
stabilise for a few minutes.
At this point it is good practice to verify the CO
2
channel. Calibrate only if required. This option
is available via the ‘Calibration’ menu. The instrument is now ready to take the first reading.
Connect the sample tube, if relevant (always use the sample filter) from the sample point to the
inlet port of the instrument, ensuring the filter is seated correctly.
Press the ‘Pump’ key to draw a sample into the instrument.
Notice the main gas readings start to change. It is recommended to run the pump until the gas
readings have stabilised (approx. 30 seconds) then press the soft-key ‘Store’.
The pump will stop and the operator will be prompted to enter an ID code to identify the
reading. A “reading stored” confirmation message will be displayed briefly before returning to
the ‘Main Read Screen’.
Note: The ID code prompt can be switched on or off. This option is accessed via the ‘Settings’
menu, then press ‘Key 1 - Prompt for ID: Yes or No’. If the ID prompt is set to ‘No’ the reading is
Gas Measurement Process
(G100 - Best Practice)
(Switch on)
Instrument
warm up
Main Read
Screen
Run a
Clean Air
Purge (no
tubes
attached)
Connect
Sample Tube
from sample
point to inlet
port
Start
Reading Stored
(confirmation
message
displayed)
Enter ID
Code
& press
Enter
END
Press the
‘Store’ key
(pump will
stop)
Disconnect
the Sample
Tube from
the inlet
port
ID Code
prompt field
On/Off?
Take another
reading?
Press the
‘Pump’ key
(draw
sample)
OFF
Default
Logging ID used
ON
Instrument automatically
returns to the
‘Main Read Screen’
NO
YES
Run until
gas readings have
stabilised
Verify gas
Run a
Clean Air
Purge
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stored using the default logging ID.
After each reading the instrument should be purged with fresh air.
Disconnect the sample tube from the instrument. Then, run the pump for a minimum of 30
seconds. The gas readings should return to nominal values for fresh air.
Regardless of the instrument configuration the following data will be stored for each reading:-
ID code (8 characters)
Reading Type (0=User, 1=Auto, 2=peak, 3=hold)
Current time/date
Gas readings (CO
2
, O2)
Sample pressure (for indication only)
Temperature x 2
Humidity
Alternative Reading Methods
There are three other reading types or methods which each require slightly different operating
procedures.
Logged reading
Peak reading
Hold reading
Logged Reading
Logged readings need to be configured and initiated via the ‘Utilities’ menu by pressing ‘Key 6 Logging’. During configuration the user will be asked to supply an ID, reading interval and pump run-
time.
These parameters are used to control the reading frequency in logging mode. Once logging mode is
activated the instrument will automatically record a reading at every interval until stopped by the
operator or the memory becomes full. Logging is also suspended temporarily whilst the user is
accessing the menu options.
Whilst the logging mode is active the ‘Hold’, ‘Pump’ and ‘Store’ key will be deactivated, only logged
readings can be stored.
Peak Reading
The operator can toggle the reading mode between normal (current) and peak readings. Whilst in
peak reading mode the instrument will only display peak values for each of the channels. These
values can then be stored by pressing the ‘Store’ key or automatically at the appropriate logging
interval (if logging is enabled).
The peak value is reset after a reading is stored or by exiting the peak mode using the appropriate
soft-key. The current mode of operation can be identified by the status of the soft-key, either
‘Normal’ or ‘Inverse’, where inverse indicates peak mode is active.
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Hold Reading
The ‘Hold Reading’ option allows the user to freeze the currently displayed reading. This allows it to
be manually recorded or moved away from the sample point. Once activated, press the soft-key
‘Hold’ and the readings are fixed until the ‘Hold’ key is pressed again or by storing the reading.
The current mode of operation can be identified by the status of the soft-key which is inversed whilst
in the hold phase.
Screen 13 - Hold reading
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CALIBRATION
User Calibration
The G100 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.
Note: If the calibration is completed incorrectly it may decrease the accuracy of the instrument.
Two important terms that are used within this section are “Zero” and “Span”.
Zero: The point at which the instrument is calibrated when there is none of the target gas present.
Span: The point at which the instrument is calibrated when a known quantity of the target gas is
present.
Calibration Gases
User calibration of the instrument will improve the data accuracy in the range of the calibration gases
used. However, it 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. Only use gases with a known certified gas concentration.
Note: Certified calibration gases can be supplied by QED.
For each gas used the appropriate material safety data sheet must be read and understood
before proceeding. Calibration gases and the use of pressure regulators can be dangerous.
Calibration Set-up
The regulator supplied with the calibration kit has been configured to deliver a fixed flow. It only
requires a few turns to open and no adjustment is necessary.
Exhaust Port
When the instrument is being calibrated, there are two possible exits for the gas; via the
usual manner out of the exhaust port of the instrument or in cases of over-pressurisation
the 1/16” port on the pressure relief valve.
It is recommended that both ports have exhaust tubing attached. The exhaust tubing must
emerge in a well-vented area. Ensure there are no leaks in the tubing and connections.
The calibration should always be carried out in a safe area with all necessary precautions
taken as all pressurised gases are potentially dangerous.
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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.geotechuk.com for further information.
The regulator supplied with the calibration kit is recommended as flow and pressure rates are
factory set.
Note: Maximum input pressure 250mb, maximum flow 300ml.
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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 – Calibration’ from the ‘Main’ menu. The
first screen displayed provides the option to select the gas that requires calibration.
Screen 14 - Calibration menu
The exact calibration method can vary depending on the gases used.
Reset Factory Settings
This option will reset the instrument to its factory programmed calibration characteristics and will
clear the user calibration points for both gas channels.
To reset to factory settings, press ‘Key 1 - Factory Reset’ from the ‘Calibration’ menu.
Screen 15 - Reset calibration screen
To prevent the user calibration data being accidentally erased the user must confirm the action
by pressing the soft-key ‘Accept’, or soft-key ‘Reject’ to exit without change.
Zero CO2 Channel
For maximum accuracy it is recommended that the CO2 Channel is zeroed using bottled gas (certified
100% N2). However, if nitrogen gas is not available the optional soda lime filter kit can be fitted to the
gas inlet. This allows the user to perform a zero using normal air as the soda lime filter will
absorb virtually all CO2 from the sample air. For both these options select 'Key 1-Zero with N2' from
the user calibration menu.
If neither of the recommended methods is available the user can select the option to perform an air
calibration. This option assumes that the user has access to fresh air at around 390ppm. Generally,
this can be found outside or in a well ventilated corridor (typically, an office or lab would
have a higher CO2 concentration).
From the ‘Calibration’ Menu, press ‘Key 2 - CO
2
channel’.
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Screen 16 - CO2 channel menu
Press either ‘Key 1 - Zero with N
2
’ (recommended) or ‘Key 2 - Zero with Air’ from the menu.
Then, either attach the 100% N2 or sample pipe to allow access to fresh air.
Ensure the zero gas has flowed and is stable.
Press the ‘Start’ key. The instrument will now wait (approximately 60 seconds) for the gas
reading to stabilise at the correct level. If zeroing with air press the ‘Pump’ key to draw in fresh
air.
The instrument will then indicate a successful zero has been completed. Press the soft-key
‘Accept’ to confirm the calibration and ‘Store’ the new user offset. Alternatively, soft-key
‘Reject’ to exit without change.
Note: If the calibration failed then purge and try again or select a different air source.
Note: If using G110 – very high concentrations of CO2 may take up to 30 minutes to purge
completely.
Span CO2 Channel
It is recommended that the instrument is spanned to target the desired reading range (e.g. 5%);
ideally this should not be a low level close to zero.
If not already preset, enter the span target, i.e. certified concentration of your calibration gas.
Press ‘Key 1’ and enter the new value. Then attach the gas and open regulator valve to allow
the gas to flow.
Press the ‘Start’ key and wait for the reading to stabilise. This can take a couple of minutes.
Once a stable reading is shown press the soft-key ‘Accept’. A successful span calibration
message will then be displayed. Press the soft-key ‘Accept’ again to confirm the calibration and
‘Store’ the new user span. Alternatively, press soft-key ‘Reject’ to exit without change.
Note: If the calibration failed then try again using a longer purge time or different target gas.
Zero O2 Channel
It is not required to zero the O2 channel. A span calibration corrects the reading across the whole
range.
Span O2 Channel
It is recommended that the O2 channel is spanned in fresh air with a target concentration of 20.9%,
although other gases and target concentrations can be used if required.
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If not already preset, enter the span target, i.e. certified concentration of your calibration gas.
Press the soft-key ‘Start’ and wait for the reading to stabilise. Press the ‘Pump’ key to draw in
fresh air. It can take a couple of minutes to stabilise.
Once a stable reading is shown press the soft-key ‘Accept’. A successful span calibration
message should then be displayed. Press the soft-key ‘Accept’ again to confirm the calibration
and ‘Store’ the new user span. Alternatively, press soft-key ‘Reject’ to exit without change.
Note: If the calibration failed then try again using a longer purge time or different target gas.
Last Field Calibration
This data can be found in the ‘Information’ screen accessed via the ‘Utilities’ menu. This option
displays the date that the last field calibration was perfomed on the instrument.
Calibration Record
The G100 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.
During calibration the instrument will record the following in the event log. For each entry the time
and date will be stored.
Event
Data Recorded
Successful user zero CO2
Type (N2 or Air) and Readings before and after
Successful user span CO2
Target Value, Readings before and after
Successful user span O2
Target Value, Readings before and after
Failed user zero CO2
Type (N2 or Air) and Reading
Failed user span CO2
Target Value, Gas Reading
Failed user span O2
Target Value, Gas Reading
Return to factory settings
Note: If the calibration failed, then try again using a longer purge time or different target gas. This
event log can only be downloaded and viewed via the optional Analyser Data Manager software.
It cannot be viewed on the analyser screen.
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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.
Warnings and Errors
When switched on the instrument will perform a predetermined self-test sequence. 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.
Use the ‘Scroll Up’ and ‘Scroll Down’ keys to move through the list if required.
There are two types of warning that may be displayed:
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 operating criteria, e.g. battery charge low,
memory nearly full.
Operational parameters that could affect the performance of the instrument, e.g. CO
2
out of
calibration.
The most likely reason for these errors is either an incorrect user calibration, or may indicate 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.
Under and Over Range Codes
If a reading is over range (i.e. above the maximum allowed reading) it will be displayed with more
than chevrons (>>.>). This can occur if a channel has been incorrectly calibrated or the sample gas
has exceeded its specified range (e.g. CO2 > 20%).
If a reading is under range (i.e. below zero) it will be displayed with less than chevrons (<<. <). Refer
to section Calibration of this manual to remedy under-range by performing a user zero.
A number displayed as asterisks (**.*) indicates an error, usually where the instrument has been
unable to complete a particular calculation. Typically, this will be the first indication of a fault
condition.
Where no data is available dashes (--.-) are displayed. This usually occurs when a particular reading or
parameter has been skipped by the user, or where an optional accessory is not fitted correctly, i.e. a
temperature probe.
Flow Fail Warning
Occasionally an instrument may report a flow fail that is caused by a blocked or flooded inlet filter,
please refer to ‘section Flow Fail for further information.
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Self-test Warning Messages
The following warnings may be displayed during the self-test period when the instrument is switched
ON.
Warning
Icon
Description
Check Memory
The instrument only has space to store less than 50 readings before
it is full. The exact number can be checked using the ‘View Readings’
option.
Memory Full
There is no more space in memory to store readings. Both the store
and log options will be disabled until the memory is cleared. The
readings should be downloaded to PC using the optional download
software before memory is cleared.
Battery Low
The instrument does not have enough power to operate for a full
day. The instrument should be recharged or connected to an
external power supply.
Service Due
It has been 12 months (or more) since your instrument was returned
to the manufacturer for a service. The performance and accuracy of
the instrument may be impaired.
User Cal. Due
It has been over a month since the instrument was last user
calibrated. For optimal performance and accuracy it is recommended
that the instrument is user calibrated each time it is used.
Invalid Time
The instrument has an invalid time. This is most likely to occur after a
reset. The correct time should be entered using the set ‘Time & Date’
option via the ‘Utilities’ menu.
Invalid Date
The instrument has an invalid date. This is most likely to occur after a
reset. The correct date should be entered using the set ‘Time & Date’
option via the ‘Utilities’ menu.
Baro. Fault
The instrument has detected a fault with the barometric sensor or its
calibration. This will have an effect on the accuracy of the readings as
they are pressure compensated. The instrument will need to be
returned to the manufacturer for service.
Sensor “0-8” range
This indicates that one of the measurement channels within the
analyser has an issue on start-up. Please contact technical support
for further guidance.
Note: Certain configuration problems can be corrected remotely. Using the Analyser Data
Manager software, it is possible to export the current configuration and e-mail it to the
manufacturer’s Technical Support or Service Department. Depending on the type of error it may
be possible to correct the configuration file and import it back into the instrument.
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User Calibration Trouble Shooting
Error
Remedy
User Zero failed
A possible reason for this is because the instrument is trying to zero
to a level which is outside the predetermined range set when the unit
was calibrated at the factory or; the gas is not stable i.e. is still
flushing the measure gas or is using ambient air/gas that is varying in
concentration. To rectify this, first ensure the unit contains
absolutely none of the gas which is being zeroed by flushing
thoroughly with nitrogen. If it will not zero, then refer to the
instructions given in the ‘Factory Settings’ section. If the instrument
continues to fail to zero then the unit must be returned to the
manufacturer for investigation.
Calibration failed
Check the span target is set to the correct value, if not, correct and
retry spanning the channel. Repeat the entire procedure, including
zeroing the channel and then calibrate the span. Ensure the reading
is stable before spanning the channel.
User Calibration Explained
Graph 1 - User calibration explained
User calibration is a means of optimising the performance of the instrument to the current operating
conditions such as ambient temperature and pressure as well as correcting for instrument drift
caused by lamp and filter settling.
In general, the instrument should not require calibration more than once a month, but we do
recommend verifying the instruments operation each day.
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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). This curve is then used to determine the gas concentration based on the
infrared signal strength after being absorbed by the gas.
Zero Calibration
A zero calibration is used to correct the entire curve for the infrared source and filter variations
caused by aging and induced drift due to dirt and other contaminants. If done correctly, there is often
no need to complete a span calibration, as the new curve will follow closely to the factory calibration
curve (curve 1 on Graph 1 - User calibration explained).
The zero calibration is very sensitive and a rushed or poor calibration, (such as the target gas still
being present), will result in a zero error; see point A on curve 2 of Graph 1 - User calibration
explained. This also produces an error throughout the remainder of the curve proportional to signal
strength, but the effect on the span is significant, see point B on Graph 1 - User calibration explained.
Note: To perform an accurate user calibration it is critical that a good user zero has been performed.
QED recommend that this be done in nitrogen in order to guarantee that none of the gas of interest
is present.
Note: The Zero calibration is very sensitive and even 100% instruments will detect in the 0 to
100ppm range even though they do not display to this resolution. Please refer to Graph 2 - Typical
zero gas purge times.
Span Calibration
A span calibration is used to optimise the analyser at the span calibration concentration (see point C
on Graph 1 - User calibration explained) for the current operational conditions. It corrects the span
point but leaves the zero unadjusted (this will be left at the last user zero if this has been performed)
and should be done at the concentration of interest in the particular application.
If the user zero is poor and the span calibration is good, it will correct the gas curve for the point of
interest, but other points on the curve could be incorrect, see curve 3 on Graph 1 - User calibration
explained.
Typical Calibration Purge Times
Typical zero calibration although displaying zero needs to be given time to settle. We recommend
commencing the calibration at least five minutes after the display concentration stabilises.
Note: If using G110 – very high concentrations of CO2 may take up to 30 minutes to purge
completely.
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Graph 2 - Typical zero gas purge times
Cross-Gas Effects
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. 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.
Error Due to CO2 Solubility in Water
Due to the water trap and filter it is possible that some of the CO2 in the sample gas will be absorbed
in to any trapped water.
Hardware Reset
If for any reason the instrument ‘locks up’ and will not switch off, or the instrument appears off and
will not turn on, it is possible to force an emergency power off. Pressing and holding the ‘On/Off’ key
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.
Typical Zero Gas Purge Time
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
0.1
00:00
01:00
02:00
03:00
04:00
05:00
06:00
07:00
08:00
09:00
10:00
11:00
Time (mm:ss)
Gas
%
display reads 0.0%
wait to Start Zero calibration
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SERVICE
The G100 instrument 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 O2 cell should be replaced every 2-3 years.
User Serviceable Parts
Note: There are no user serviceable parts inside the instrument. Please do not attempt any repair
as this may invalidate any warranty supplied with your instrument.
The following parts are supplied by your instrument manufacturer and can be replaced by the user:
Sample Filter
This should be regularly inspected for damage or discolouration and
changed if needed. The instrument should never be operated
without the sample filter as this may result in water or dust entering
the instrument. The filter should be changed immediately if water
can be seen. Failure to do so can damage the instrument.
Sample Tubing
Always ensure that sample tubes are not contaminated or damaged.
Cleaning
The instrument and accessories (including power supply unit) can be wiped clean using a non-fibrous
damp cloth.
Note: Do NOT apply pressure to the LCD display as this can cause damage.
Do NOT apply any moisture to the moisture removal tube on the rear of the instrument as this may
damage the membranes.
Do NOT use solvents or any other chemical cleaners.
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WARRANTY POLICY
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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 software manual for further details.
Event
Data
Cold Start/Reset
Type of start (MCUSR, boot_key)
Firmware Version
Description
Set time
Before and After
Set date
Before and After
Re-flash requested
None
Restore to factory settings
Type
Comms clear memory
Type 0=Readings, 1=Event Log
Change contrast
Before and After
Change flow fail current limit
Before and After
Battery less than critical voltage
Critical, Actual
RTC date/time invalid
None
Factory calibration invalid or overdue
Date, difference
Service invalid or overdue
Date, difference
Power on self-test, sensor out of range
Channel, reading, limit
User calibration set zero OK
Before, After
User calibration set span OK
Target, Before, After
User calibration set zero failed
Target, Reading
User calibration set span failed
Target, Reading
Attempt to store when readings memory full
Max
Readings memory nearly full
Limit, Actual
Change logging mode
Status, Interval, Pump time
Change logging mode ID
ID
Flow fail current limit exceeded
Limit, Actual
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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.
The Waste Electrical and Electronic Equipment directive (WEEE) makes producers responsible from
July 1st 2007 in meeting their obligations, with the fundamental aim of reducing the environmental
impact of electrical and electronic equipment at the end of its life.
QED is now registered with the Environmental Agency as a producer and has joined a recycling
scheme provider who will manage and report on our electrical waste on our behalf.
Our Producer Registration Number is WEE/GB0052TQ
So when your instrument is at the end of its life, please contact the Sales team at QED who will advise
you on the next step in order to help us meet our obligations.
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EU DECLARATION OF CONFORMITY
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GLOSSARY OF TERMS
Analyser error messages
For a list of standard error codes and for more
information, please refer to section Problem Solving of
the operating manual.
Analyser warnings
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 CO
2
out of
calibration.
Battery charge
A full battery charge will take approximately four
hours.
Calibration
The process that an instrument will undergo to enable
it to measure and display the various parameters in
accordance with the manufacturer’s specification.
Chemical cell
Type of gas detector which can be fitted internally to
the analyser at the time of manufacture.
Clean air purge
Process used to clear out gas from the inlet pipe and
the analyser’s gas sensors prior to taking a new
reading.
CO2 Carbon dioxide gas.
Contrast adjustment
Adjustable setting which darkens or lightens the text
displayed on the screen. Typically, this is used to
compensate for different environmental
temperatures. High temperature causes the display to
darken and low temperature causes the display to
lighten.
Data logging
A mode of operation that enables the user to leave
the analyser unattended to take readings
automatically at predetermined times. The reading
interval and pump run-time may be adjusted prior to
commencing the logging cycle.
Download
Terminology used to describe the transfer of data
from the analyser to a PC via the Analyser Data
Manager software.
Event log
Record of significant events in the life of the analyser.
Used as an aid to monitoring the use of the analyser. It
can also be used as a diagnostic tool if there is a
problem with the analyser. The event log can be
viewed via the –Analyser Data Manager software. It
cannot be viewed on the analyser screen.
Exhaust port
The point at which the gas exits the analyser. This is
located on the top of the analyser. It is threaded to
take an M5 hose-barb to allow an exhaust tube to be
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attached if required.
Exhaust tube
Clear plastic tubing used to route gases from the
exhaust port.
Factory settings
Default calibration settings preset at time of factory
calibration.
Firmware
Firmware is the name given to the analyser’s internal
software. This can be programmed using the re-flash
command on the Analyser Data Manager software.
The latest software release can be downloaded from
the QED website. It is also automatically updated
when the analyser is returned for servicing.
Analyser Data Manager
Analyser Data Manager software 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.
General warnings
Displayed throughout the documentation with a
warning symbol. Warning information may affect the
safety of users.
Inlet port
Port located on the top of the analyser to which the
inlet tube is attached.
LCD display
Liquid Crystal Display. Fitted to the front panel of the
analyser.
Main Read Screen
The main analyser screen for normal operations and
all operations are carried out from this screen.
Memory
The analyser memory should not be used as a
permanent storage medium and data collected should
be transferred using the Analyser Data Manager
software.
Moisture removal tube
Device used to remove water vapour from the sample
gas. This is located at the back of the analyser and
should not be covered or partially covered. This is not
user serviceable and should NOT be removed by the
user.
Moisture Trap
Device to remove condensed water from the sample
line. This can be a simple absorption filter as per a
moisture trap, a catch-pot or simple return tube
depending on the application.
O2 Oxygen gas typically 20.9% in air, measured via
electro-chemical cell.
Over range codes
Over range codes are errors above the maximum
allowed reading and will be displayed with more than
chevrons (>>.>)
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ppm
Parts per million
Pressure
Maximum input pressure 300mb maximum flow
250ml.
Pump
The device used to transfer a gas sample into the
instrument where that sample is not under pressure.
Select the ‘Pump’ key on the analyser to activate.
Regulator flow
The regulator’s flow is factory set. It only requires a
few turns to open, no adjustment is available.
Sample tube
Tube used to transfer sample gas from the source to
the analyser.
Span
The point at which the gas analyser is calibrated when
a known concentration of the target gas is present.
Temperature probe
External device to enable the instrument to display
data and record the temperature readings. This is an
optional feature.
Under range codes
Under range codes are errors below zero and will be
displayed with less than chevrons (<<.<)
User calibration
Users have the facility to calibrate the analyser
between services. User calibration of the gas analyser
will improve the data accuracy in the range of the
calibration gases used.
Verify
Checking instruments operation using calibration gas.
Warm-up self test
Predetermined self-test sequence to test the analyser
functions which takes place after the analyser is
switched on and lasts approximately 30-40 seconds.
Warranty
The instrument is guaranteed against defect in
materials and workmanship for a period of 12 months
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.
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