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E.3 THERMISTOR
Range: -80 to +150 °C
Accuracy: ±0.5 °C
E.4 TEMPERATURE CORRECTION FACTOR
A small correction can be made for change in temperature. As the temperature
goes up the average reading of the sensor will go down approximately one digit
per °C. To calculate the displacement, corrected for temperature, use the
equation below.
D
= G [(R
– R
) + (T
– T
)]
corrected
1
0
1
0
EQUATION 8: Displacement, Corrected for Temperature
The temperature effect shown above is for a low profile crackmeter that has not
been installed yet and is very minor. The actual temperature effect of the
installed instrument can be arrived at empirically only by simultaneous
measurements of deformation and temperature over a short period of time.
28 | MODEL 4420-3 LOW PROFILE CRACKMETER | GEOKON
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