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 22 of 48
9
Calibration
The module supports a two-point calibration where two gases are required:
•
ZERO gas - clean pollution-free air
•
SPAN gas - VOC with known concentration ( ISOBUTENE for standard calibration method )
USAGE
–
CHOOSE THE RIGHT SPAN GAS CONCENTRATION
To achieve the best accuracy it is recommended that SPAN gas concentration is in same
range as the expected measurement result and fits to detection range of the module.
The procedure step by step:
•
Connect and start the measurement on the module as described
( Action ‘start’ )
•
Apply ZERO gas
•
Read the measurement values from the module and wait for stabilizing
( Action ‘values’ )
•
Keep the compensated current value for ZERO calibration point
•
Apply SPAN gas
•
Read the measurement values from the module and wait for stabilizing
( Action ‘values’ )
•
Keep the compensated current and concentration values for SPAN calibration point
•
Write the calibration data back to module
( Action ‘write’ )
•
On successful calibration verification save calibration data to module
( Action ‘verify’ and Action ‘save’ )
The calibration will be done with currently selected calibration method in measurement config.
Calibration data values stored seperately for ‘standard’ and ‘extended’ calibration.
