Symptom: Unstable temperature is reported.
Probably a result of electromagnetic interference. Try using the 50 Hz or 60 Hz options for the
f
N1
parameter, and/or increasing the settling time as described in
(p. 9). Ensure the clear wire is connected to data
logger ground, and the data logger is properly grounded.
9.2 Maintenance
The 109SS probe requires minimal maintenance.
Periodically check cabling for signs of damage and possible moisture intrusion.
9.3 Calibration
If needed, an estimate of the interchangeability error for 0 to 50 °C, that can be used as the
Offset
parameter of the
Therm109()
instruction, can be determined with a 1-point or 2-point
calibration. Calibration of the 109SS probe is not necessary unless the accuracy needed in the
sensor data requires correction of the thermistor interchangeability offset described in
10. Attributions and references
Santoprene® is a registered trademark of Exxon Mobile Corporation.
Measurement Specialties™ is a trademarked global designer and manufacturer of sensors and
sensor-based systems.
ATUM is a trademark of Tyco Electronics Corporation.
Macromelt® is a trademark of Henkel Corporation.
109SS Temperature Probe
11
