User's Guide _______________________________________________________________________
182 __________________________________________________________________ M210243en-A
Soil Temperature Sensors
Table 55 QMT103 Soil/Water Temperature Sensor
Specifications
Property Description/Value
Sensor Type Pt-100 type RTD element
Performance (accuracy)
Better than +0.08 °C at 0 °C, conforms to 1/4
DIN 43760B
Sensitivity
0.385 Ω/°C (DIN 43760)
Measuring range
- 50 ... +60 °C
Dimensions
100 (l) × 7.5 (∅) mm
Material Stainless steel, AISI 316
Environmental Watertight from 0.1 to 4 bar
Cable
Extension
PUR black, 5 × 0.5 mm
2
Cu, 5 m
10 meter shielded cable with male-female
connectors
Ingress protection IP68 (connector)
Table 56 QMT107 Soil Temperature Probe Specifications
Property Description/Value
Measurement range
-40 ... +60 °C
Output signal Four-wire connection
Temperature sensor
7 × Pt-100 IEC 751 1/3 Class B
Temperature reference 100R00 0.01% 5 ppm resistor
Accuracy, when zero-point
calibration has been activated
±0.3 °C
Operating temperature range
-40 ... +60 °C
Storage temperature range
-40 ... +80 °C
Supply voltage VCC 6 ... 30 VDC
Settling time <10 ms
Power consumption <1.5 mA
Output load
>1 MΩ (to ground)
Weight (gross/net) 875 g / 640 g
Cable length 1 m
Housing material Glass fiber tube/epoxy fill
Housing classification (electronics) IP 68 (NEMA 4)
Dimensions
1200 (h) × 20 (∅) mm
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