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1
6.7 On-site recalibration
It is possible to make a recalibration of the instrument's gas sensors with suitable known concentration gas
cylinders. Recalibration of Oxygen (O
autozero sequence.
The access to the sensor recalibration is password protected, the password is ' 1111 '.
To carry on the recalibration the following instruments are needed:
- Known concentration gas cylinder suitable for the sensor, complete with a pressure regulator
2
- Flow meter
- Hose with Tee fitting to connect the cylinder to the flowmeter and to the instrument
6.7.1 Flow Chart - On-site recalibration
3
CHEMIST 404S
SN:00001
Ver:1.01
4
AUTOZERO STARTED
WARNING
Insert the gas probe
in the chimney
Or
automatically, after 10 seconds.
MEMORY
►Mem.:
001
Fuel:
Natural gas
5
Oper.:
Rep.:
full
Mode:
manual
Automatically, after 10 seconds.
autozero
Autozero: 25
Bat.:94 ٪
Time:11.33
Date:09/18/03
6
Autozero cycle end
AUTOZERO COMPLETED
WARNING
Starting combustion
analysis
Or
automatically, after 10 seconds.
7
O
4.2٪
Eff 83.4٪
2
Loss16.6٪
CO
9.3٪
2
CO
146p
Xair 1.25
NO
40p
Tf 190.1C
SO
41p
Ta
15.4C
2
NO
51p
∆T
74.7C
X
►RefO
Auto:001
2
Depress
8
In the following a recalibration example, referred to the CO sensor, is explained.
70
) sensor is not availbale since it is already recalibrated during every
2
When depressed for at least 2 seconds, turns the instrument on.
ATTENTION
Make sure autozero is execute in clean air.
ATTENTION
Do not connect the gas probe to the instrument.
ATTENTION
Check the battery charge level or connect the
power adapter to avoid data loss during
recalibration.
▼
key and with
move the cursor to 'Calibration'.
K900000000SE 022628A0 071013
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