Sutron 8310 - Page 77

Sutron Corporation 8310 & 7310 Users Manual 8800-1125Rev. 2.7 (BETA) 4/16/2014 pg. 77
Interval, Time
Define when the measurement task runs. (See details under Instantaneous)
FreqInputUnits
Specifies the units of the frequency (Freq) input. May be either Digits or Hz.
TempCompensation
When Yes, the TempC input is measured, and is used to compensate the calculation of
Out. The measured temperature is output in the TempC output.
BPCompensation
When Yes, the BP input is measured, and is used to compensate the calculation of Out.
CalibrationUnits
Specifies the units used on the sensor calibration sheet. May be either Digits or Hz. The
units selected help determine which calibration factors are presented for edit.
A, B, C
These values come directly off the sensor’s cal sheet. These factors are available when
calibration units are Digits, or when the calibration units are Hz and temperature
compensation is disabled.
K, T0
These values come directly off the sensor’s cal sheet. These factors are available when
calibration units are in Digits, and temperature compensation is enabled.
C0, C1, C2, C3, C4, C5
These values come directly off the sensor’s cal sheet. These factors are available when
calibration units are Hz and temperature compensation is enabled.
S0
This value comes directly off the sensor’s cal sheet, and is available only when
BPCompensation is enabled. Enter a value in a consistent set of units as the measured
barometric pressure.
PressureScale
This value is available only when BPCompensation is enabled. It is used to convert from
the barometric input units to the units that the output is in.
Note: For vented sensors, barometric pressure will not be included. For very high
pressure sensors, barometric pressure will unusally not be included since its effect
becomes insignificant.
Here are some hints as to how to set the value of PressureScale (note: S is the measured
barometric input):
1. If both S and S0 are in mB or hPa and the calibration coefficients are for PSI, the
value of ps would be 0.014504
2. If both S and S0 are in mB or hPa and the calibration coefficients are for kPa, the
value of ps would be 0.1
3. If both S and S0 are in mB or hPa and the calibration coefficients are for MPa,
the value of ps would be 0.0001