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Convection-enhanced Pirani Gauge
Terranova® 907 set point pressure display resolution is as follows:
Step
Range
5 Torr
greater than 100 Torr
0.5 Torr
10 Torr to 100 Torr
0.05 Torr
5 Torr to 10 Torr
0.02 Torr
1 Torr to 5 Torr
1 mTorr
less than 1000 mTorr
Display resolution steps are converted from torr to millibar or Pascal units.
Capacitance Diaphragm Gauge
The Terranova® 907 SET POINT HI pressure value can range from 0.20% to 99.9% of full scale
value. The SET POINT LO pressure value can range from 0.19% to 99.8% of full scale value. Set
point resolution steps (in torr units) are as follows:
Step
Pressure Range
0.01 % of full scale
less than 10% of full scale
0.1 % of full scale
greater than 10% of full scale
For example, a 1000 Torr full scale sensor has a SET POINT HI pressure range from 2.0 Torr to
999 Torr; the SET POINT LO pressure range is from 1.9 Torr to 998 Torr. Values will be displayed
in 0.1 Torr steps for pressures less than 100 Torr and 1 Torr steps for pressures greater than 100
Torr. The Terranova® 907 converts the set point resolution from torr to millibar or Pascal
pressure units, rounding pressure values to the next resolution step. For example, for a 1333
mbar full scale sensor, values will be displayed in 0.13 mbar steps for pressures less than 133
mbar and 1.33 mbar steps for pressures greater than 133 mbar.
