Specifications

Sensor element:

Measurement Specialties Micro-BetaCHIP 10K3MCD1 thermistor

Survival range

 

Thermistor:

–50 to 100 °C

Overmolded joint and cable:

–50 to 70 °C

Measurement range:

–40 to 70 °C

Time constant:

31 s in still air
7.5 s in a wind speed of 3 m/s
0.5 s in rolling water or antifreeze

Maximum cable length:

305 m (1000 ft)

Accuracy1

 

Worst case:

±0.60 °C (–40 to 70 °C)
±0.49 °C (–20 to 70 °C)

Maximum submergence:

45 m (150 ft) (63 psi)

Interchangeability error:

±0.60 °C at –40 °C
±0.38 °C at 0 °C
±0.10 °C at 25 °C
±0.30 °C at 50 °C
±0.45 °C at 70 °C

Steinhart-Hart equation error:

≤ 0.02 °C (–40 to 70 °C)

Stainless-steel sheath

 

Diameter:

0.16 cm (0.063 in)

Length:

5.84 cm (2.3 in)

Overmolded joint

 

Diameter:

1.02 cm (0.40 in)

Length:

4.24 cm (1.67 in)

Cable:

Santoprene®, 0.220 in diameter

Cable/probe connection:

ATUMTM heat shrink
Macromelt® overmolded joint

Weight:

0.2 lb per 10.5 ft cable

Compliance:

View the EU Declaration of Conformity at www.campbellsci.com/109ss

1Overall 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.