Photoionization Detector Module PIM CPN
User Manual
PIM_CPN - User Manual (en) - 1.08.docx
Analytical Control Instruments GmbH, Volmerstraße 9A, 12489 Berlin, Germany, www.aci-berlin.com
Page 21 of 48
8
Measurement config
The module comes with a measurement config for additional measurement information and settings:
•
Calibration method
•
Gas identification
•
Gas response factor
The default values are :
Calibration method
standard
Gas identification
115-11-7 ( CAS-Number )
Gas response factor
1.0
The measurement config data can be readed and written with UART command and I2C data registers.
8.1
Calibration method
The module supports two methods of calibration :
•
‘
standard
’
calibration with known concentration of ISOBUTENE in air
•
‘
extended
’
calibration with known concentration or as kind of indicator of VOC components
In
‘
s
tandard’ calibration
method the span gas sensor current is validated to span gas concentration.
8.2
Gas identification and response factor
The gas identification is the CAS number as text for additional sensor specific information.
The module result calculation is based on ISOBUTENE gas. The gas response factor is a numeric factor
applied to the ISOBUTENE gas result.
