MODEL 3810A ADDRESSABLE THERMISTOR STRING
| TEMPERATURE CALCULATION |
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5.
TEMPERATURE CALCULATION
Thermistors can be read using a
GEOKON
Micro 1000, Micro 800, or 8600
Datalogger, or any PC that has a USB port and
GEOKON
's free 3810A Utility
program.
5.1
STEINHART-HART COEFFICIENTS
A = 1.128706256 ×10
-3
B = 2.342327483 × 10
-4
C = 0.8707279757 × 10
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5.2
FLOATING POINT RESISTANCE READINGS (PREFERRED
METHOD)
R
= Resistance reading (from register address 0x0102)
5.3
RAW ADC (ANALOG TO DIGITAL CONVERTER) READINGS
Resistance can be found by:
R
= ADC reading (from register address 0x0100)
And temperature is:
Using an example ADC reading from address 0x0100 of 0x7984 (31,108):
