Vaisala CARBOCAP GMP231, User Manual

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• 2-point adjustment is recommended if you typically measure a variable CO
2
level.
Available adjustment functions depend on the interface you use to operate the GMP231. If you
want to integrate the functionality into the incubator’s control system, the I
2
C interface and the
Vaisala Industrial Protocol are recommended. If you want to compare the reading of the
GMP231 to a reference instrument as adjust it accordingly, use an MI70 handheld indicator and
a reference probe.
6.4.4.1 I
2
C Interface
I
2
C interface supports 1 and 2-point adjustment sequences as well as configuration of the
environmental compensation settings using the Get_Parameter and Set_Parameter
commands.
More information
‣ Get_Parameter (page 55)
‣
Set_Parameter (page 57)
‣
Adjust (page 61)
6.4.4.2 Vaisala Industrial Protocol
Vaisala industrial protocol supports one and two-point adjustment with the
CCO2
command.
You can also adjust the internal pressure and temperature measurements with a simple offset
correction. Configuration of the environmental compensation settings can be done using serial
line commands.
More information
‣
Changing measurement settings (page 35)
‣
Calibration commands (page 40)
6.4.4.3 MI70 handheld indicator
MI70 handheld indicator supports 1-point adjustment, either using a calibration gas or using a
reference instrument that is connected to the MI70.
More information
‣
Calibration and adjustment with MI70 indicator (page 77)
GMP231 User Guide M211501EN-E
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