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Honeywell Sensotec Frequently Asked Questions |
What is zero balance temperature effect?
Zero balance is the pressure sensor output at 0 pressure. This balance
changes as temperature changes.
Zero balance temperature effect
Zero Balance Temperature Graph (Note T1 and T2)
During manufacture the effects of zero balance temperature shift is compensated
for by by inserting compensating resistors. When a temperature changes drives
the transducer output higher, the compensation resistors are driving the
output lower to offset and compensate for this increase.
Compensating for zero balance temperature effect
Temperature compensation greatly minimizes the effect of temperature on
the zero offset but there is still some residual effect that remains. This
residual effect is specified in the pressure sensor specifications as the
zero balance offset and is described as a percentage of full scale change
per degree Fahrenheit (% F.S ./ EF)
Sensotec Note:
A typical Sensotec transducer has a specification of 0.002% F.S. / EF. This
means that a A 10,000 psi sensor will exhibit 0.2 PSI for every degree change
from the calibration reference temperature. The Sensotec calibration reference
standard temperature is 75 EF.
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