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Maintenance
1
2
3
4
5
6
7
8
9
10
11
Chamber Lid Plug
A silicone plug is placed in the lid of each chamber. For collecting a gas sample, penetrate the lid plug
with a needle attached to tubing and connect to the gas analyser input. Do not use needles larger
than 0.5 mm x 25 mm. the angle for penetration should be vertical (+/- 10 degrees) and no horizontal
movements should be made. Each plug should not be penetrated more than 5 times after which it
should be replaced.
Verification of Gas Concentration in Chambers
Order of sampling
1st.
Chamber #8
2nd.
Chamber #3
3rd.
Chamber #7
4th.
Chamber #2
5th.
Chamber #9
6th.
Chamber #4
7th.
Chamber #6
8th.
Chamber #1
9th.
Chamber #10
10th.
Chamber # 5
1.
Connect a short length of tubing to the gas
analyser input.
2.
Connect a 25-gauge needle to the tubing.
3.
Penetrate the required chamber through the
silicone plug.
4.
Collect the gas sample using the gas analyser.
5.
Stop the gas analyser pump.
6.
Remove the needle from the silicone plug.
7.
Record the gas concentration reading.
8.
Wait 2 minutes between chamber sampling.
9.
Repeat for the remaining chambers in the order
shown below.
10.
Take the average value for O
2
concentrations in the chamber with the highest and lowest O
2
concentration and change the calibration setpoint according to this value.
11.
Take the average CO
2
concentrations in the chamber with the highest and lowest CO
2
concentration and change the calibration setpoint according to this value.
12.
If a chamber is more than +/- 0.5 from gas setpoint, please contact a local Service Technician.