GEM5K Easy Steps Gas Check

GEM5K Easy Steps Gas Check
GEM5K Easy Steps
Gas Check
WARNING – Calibration gases can be dangerous. For each gas used the appropriate material safety data
sheet (MSDS) must be read and understood before proceeding.
1. Switch unit on by pressing the On/Off key
for 2-3 seconds. Wait for unit to boot up and complete self-test.
2. Press Next after self-test is complete.
3. If prompted to login as a technician select the proper user from the list and press enter when done.
4. When at the main read screen press the Menu key
. This will take you to the Operation Settings screen.
4. Press key 2 for Gas Check.
5. Press key 1 for Gas Check; this should take you to the Select Gas Mix screen.
From the Select Gas Mix screen you will notice as default a list of 6 gas mixes, each gas mix has pre-determine gas
concentrations that you can see under the gas mixture detail. From the list of gas mixes you need to select a gas mix to
zero and a gas mix to span/calibrate. In the example below the following mixes will be used:



Fresh Air – To zero CH4
CH4 High – To span CH4/ CO2 and Zero O2 (50% CH4, 35% CO2, 0% O2)
Oxygen High – To span O2 to ambient air (20.9% O2)
Zero CH4
6. Select gas mix Fresh Air and press enter. This will take you to the Gas Check screen and the pump will
automatically turn on. Select Check when ready, a one minute timer will start for readings to stabilize.
7. When timer reaches zero the following message will be displayed Check complete.
8. Read the status field…
Means the gas channel is within specification.
Means the gas channel is out of tolerance and recommended to zero the gas channel.
Means the gas channel is out of range, has failed the check and can’t be adjusted by a user calibration.
Means the gas channel is disabled or can’t be zeroed.
9. You will notice the following options:

Record – To accept and record results of the zero calibration check.

Calibrate – To zero and record the zero calibration result.

Retry – To allow the gas to flow for longer.
10. Select Calibrate to zero your CH4, note calibration result and select Retry or Exit.
Span CH4/CO2 and Zero O2
11. Select gas mix CH4 High and press enter.
12. Connect the 50% CH4/35% CO2 calibration gas mix to the inlet (white colored) port on analyzer. Open the pressure
regulator for gas to start flowing and select Check when ready. A one minute timer will start for readings to stabilize.
13. When timer reaches zero the following message will be displayed Check complete.
14. Once again, read the status field and select Calibrate to span the CH4 and CO2 and zero O2.
15. Note calibration results and select Retry or select Exit until you return to the Gas Mix screen.
Span O2
16. Select gas mix Oxygen High and press enter, the pump will start automatically then select Check when ready. A
one minute timer will start for readings to stabilize.
17. When timer reaches zero the following message will be displayed Check complete.
18. Once again, read the status field and select Calibrate to span your O2 then you can turn off the pump manually if
it’s running.
19. Note calibration results and select Retry or Exit until you get to the main reading screen.
For any help or assistance please contact technical support at 909-783-3636 Ext. 6141
Rev 3 Oct. 26, 2012
LANDTEC North America, Inc.
Tel: 909-783-3636 ● Tel: 800-821-0496
www.landtecna.com
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