Campbell Scientific 109SS Temperature Probe - Manual (Page 19)

Model 109SS Temperature Probe
9.2 Maintenance
The 109SS probe requires minimal maintenance. Periodically check cabling
for signs of damage and possible moisture intrusion.
9.3 Calibration
Calibration of the 109SS probe is not necessary unless the application requires
removal of the thermistor interchangeability offset described in Section 6,
Specifications. If performing the one point calibration with an Edlog
datalogger, be aware of this precaution:
The value of the offset must be chosen so that the probe outputs the
temperature calculated by the polynomial, not the actual calibration
temperature. For example, a 109SS probe placed in a calibration chamber at 0
° C outputs 0.1 °C. An Offset argument of –0.08 is required for Edlog
dataloggers because at 0 °C, the polynomial calculates a temperature of 0.02 °C
(Appendix C, Conversion of Thermistor Resistance or Voltage Ratio to
Temperature).
10. Attributions and References
Santoprene ® is a registered trademark of Exxon Mobile Corporation.
ATUM is a trademark of Tyco Electronics Corporation.
Macromelt ® is a trademark of Henkel Corporation.
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