l
Compatible CRBasic data loggers: CR6, CR3000, CR1000X, CR800-series, CR300-series,
CR1000
6. Specifications
Sensor element:
Measurement Specialties 100K3A1iA thermistor
Survival range:
–50 to 100 °C
Measurement range:
–50 to 70 °C
Time constant in air:
30 to 60 s in a wind speed of 5 m/s
Maximum cable length:
305 m (1000 ft)
Accuracy
1
Worst case:
±0.60 °C (–50 to 70 °C)
±0.25 °C (–10 to 70 °C)
Interchangeability error:
±0.10 °C (0 to 70 °C)
±0.13 °C at –10 °C
±0.15 °C at –20 °C
±0.18 °C at –30 °C
±0.20 °C at –40 °C
±0.50 °C at –50 °C
Steinhart-Hart equation error:
≤ 0.03 °C (–50 to 70 °C)
Probe weight and dimensions
Weight with 10 ft cable:
136 g (5 oz)
Length:
10.4 cm (4.1 in)
Diameter:
0.762 cm (0.3 in)
Compliance:
View the EU Declaration of Conformity at
1
Overall probe accuracy is a combination of thermistor interchangeability, bridge-resistor accuracy, and error of the
Steinhart-Hart equation. Bridge resistors have 0.1% tolerance with a 10 ppm temperature coefficient.
Interchangeability is the principle component error. 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.
109 Temperature Probe
5
