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PM600 Fast Sensor Calibration Commands with Module in Controller

The fast sensor in a PM600 or PM630 Pressure Measurement Module (not in a BRM600-BA100K module) is self-calibrated to match its quartz sensor (Q-RPT) when installed in a 6270A controller. The commands adjust the fast “inner loop” sensor in the PM600 to match the Q-RPT.
If the module(s) are installed in a 2271A/6270A/8270A/8370A controller then see this article,
 
The fast sensor can be adjusted with the following commands when the module is in a 6270A or 8270A or 8370A controller. The same commands can query the values if followed by a question mark (?). Check the existing value to see what the pressure units are.

<n> is determined by the slot number of the module plus 8 (for fast sensor):
8 for Slot 1
18 for Slot 2
28 for Slot 3
38 for Slot 4
48 for Slot 5

Command

Notes

CAL:PRES<n>:VAL1 <atmosphere>

Where <atmosphere> is the current atmospheric pressure. This should be done when the pressure is stable and vented. 

CAL:PRES<n>:VAL2 <pressure>

Where <pressure> is the current pressure. This should be done when the pressure is stable and at full scale.

CAL:PRES<n>:SAVE

Save the changes

 

The fast sensor can be adjusted with the following commands when the module is in a PMM-CAL-KIT-20M calibration kit. There is no query command.

Command

Notes

FAST_ZERO

Request that the fast sensor be zeroed to the Q-RPT and saved to FLASH. This should be done when pressure is stable and close to atmosphere.  See UCOEF_SET3[0] command to access the offset value.

FAST_SPAN

Request that the fast sensor be span adjusted to the Q-RPT and saved to FLASH. This should be done when pressure is stable and not close to atmosphere.  See UCOEF_SET3[1] command to access the offset value

CAL_STORE

Save the changes

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