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K800000000EJ 020650A0 170512
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
2
) sensor is not available since it is already recalibrated during every
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
- Flow meter
- Hose with Tee fitting to connect the cylinder to the flow meter and to the instrument
6.7.1 Flow Chart - On-site recalibration
When depressed for at least 2 seconds, turns the instrument on.
►RefO
2
Auto:001 ▼
O
2
4.2٪
CO
2
9.3٪
Xair 1.25
Tf 190.1C
Ta 15.4C
∆T 74.7C
Eff 83.4٪
Loss16.6٪
CO 146p
NO 40p
NO
X
51p
WARNING
Insert the gas probe
in the chimney
AUTOZERO STARTED
WARNING
Starting combustion
analysis
AUTOZERO COMPLETED
Autozero: 25
Bat.:94 ٪
Time:11.33
Date:09/18/03
autozero
►Mem.: 001
Fuel: Natural gas
Oper.:
Rep.: full
Mode: manual
MEMORY
Autozero cycle end
Or
automatically, after 10 seconds.
BTU900
SN:00001 Ver:1.00
Automatically, after 10 seconds.
Or
automatically, after 10 seconds.
ATTENTION
Make sure autozero is execute in clean air.
ATTENTION
Check the battery charge level or connect the
power adapter to avoid data loss during
recalibration.
ATTENTION
Do not connect the gas probe to the instrument.
Depress key and with mov e the cursor to conf iguration submenu and select
'Calibration'.
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