INFICON HPG400-SP ATM to High-Vacuum Gauge (Profibus) - Manual (Page 29)

tira36e1-a (0310) BPG/HPG400 v1.cp
29
Calculation of the pressure (PV is the abbreviation used for Process Value):
PV
mbar
= 10 (COUNTS / 2000) - 12.5
PV
Torr
= 0.75006168 × PV
mbar
PV
Micron
= 10 -3 × PV
Torr
PV
Pa
= 100 × PV
mbar
Calculation of the pressure (PV is the abbreviation used for Process Value):
PV
mbar
= 10 (6 × COUNTS / 16000) - 9.125
PV
Torr
= 0.75006168 × PV
mbar
PV
Micron
= 10 -3 × PV
Torr
PV
Pa
= 100 × PV
mbar
This parameter is remains on "0".
Two data types are supported: Float and Integer16.
In cyclic data traffic, the data type cannot be modified. The data type setting can
only be modified when the gauge is in the IDLE status. By defining the configura-
tion data for cyclic data traffic (selection of standard telegram), the data type used
in the selected standard telegram is taken over. All settings previously made in
acyclic data traffic are thus overwritten.
If the data type is set in one instance, that data type setting applies to all instances.
Likewise, when a standard telegram is selected, the data type used by that
standard telegram will be valid for all instances
Coding Data type
3 Integer16
8 Float
The gauge supports the following pressure units:
Coding Pressure unit
1001 COUNTS
1301 Torr
1302 mTorr (Micron)
1308 mbar
1309 Pascal
For safety reasons, it is not possible to change the pressure unit while
the gauge is cyclically interchanging data with a DP/V0 master.
The data unit setting can only be modified when the gauge is in the IDLE
status.
In cyclic data traffic, the data unit must be set in the User Parameter
Data. All settings previously made in acyclic data traffic are overwritten
(
→ section "User Parameter Data").
If the data unit is set in one instance, that data unit setting applies to all
instances. Likewise, the data unit setting made in the User Parameter
Data is valid for all instances.
BPG400-SP
HPG400-SP
3.2.3.2 Status
3.2.3.3 Data Type
3.2.3.4 Data Unit