Bmr2 Compatibility Output（Mode Setting; Pressure Conversion Formula - Ulvac G-TRAN Series Instruction Manual

9.7. BMR2 compatibility output（mode setting 9）

Pressure conversion formula

Pressure conversion formula: P = 10 × ( V – E ) × 10 ^ ( E - 8 )
The calculated value of (V-E) maybe 0.1 or less due to errors in this unit's output
voltage or errors in the measuring instruments. In this case, we recommend rounding up
the value to 0.1.
Normal measurement
When the pressure exceeds the
maximum measurable limit
When the pressure is lower than the
minimum measurable limit
Filament is off
10
9
8
7
6
5
4
3
2
1
0
1.0E-08 1.0E-07 1.0E-06 1.0E-05 1.0E-04 1.0E-03 1.0E-02 1.0E-01 1.0E+00 1.0E+01
P: Pressure value
V: Measured value output voltage
E: Value obtained by rounding down the decimal
places of the measured value output voltage V
Status
Pressure (Pa)
Measured value output voltage
Voltage corresponding to the
measurement pressure
9.9V or higher
0.5V or lower
9.9V or higher
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