THERM-SS Stainless Steel Thermistor
For the measurement of soil, air or liquid temperature.
The stainless steel temperature sensors (THERM-SS) are high quality, low cost sensors for measurement of soil, air or liquid temperature. The sensor consists of a thermistor embedded in a protective stainless steel body. THERM-SS sensors can be used in a wide range of applications from soil monitoring and climate control to concrete monitoring and explosive testing. THERM-SS has a measurement range between -40°C and +100°C. Standard cable lengths are 5m, 30m and 50m however custom length cables are available.
THERM-SS Stainless Steel Thermistor Sensor Features
- Measurement range between -40°C and +100°C
- Wide range of applications
- For measurement of soil, air or liquid temperature
Utilising the THERM-SS Thermistor sensor in a custom IoT (Internet of Things)
The SNiP-STP is a ‘Sensor Node Integrated Package’ for LoRaWAN communication of real-time soil temperature measurement for continuous soil monitoring.
The base SNiP-STP integrates 1x AD-NODE and 1x THERM-SS Stainless Steel Thermistor to a site’s unique network, communication and power requirements.
- The THERM-SS is ideally supported by the Thermistor Sensor Meter 2 (TSM2), a wireless, stand-alone logging instrument available from ICT International. With the TSM2, THERM-SS sensors have their excitation voltage measured at every measurement interval or in live mode for increased accuracy.
- The TSM2 can support up to 9 THERM-SS sensors.
- For complete monitoring solutions, the THERM-SS is used in combination with the MP406 soil volumetric moisture content sensor, tensiometers for soil water potential, ICTO2 soil oxygen sensor, or the ICT International automatic weather station.
Applications:
- Soil monitoring
- Climate control
- Concrete monitoring
- Explosive testing
| 1. Electrical Characteristic | ||||
| Item | Symbol | Test Condition | Performance | Unit |
| 1.1 Rated Resistance | R25°C | + 25±0.05°C | 10±1% | k Ohms |
| 1.2 B value | B25/85 | + 25±0.05°C, 85±0.05°C |
3990±1% | k |
| 1.3 Time constant | t | In well stirred water | <=11 | sec |
| 1.4 Dissipation factor | s | In still air | >=2.2 | mW/°C |
| 1.5 Voltage withstanding | U | AC1500V (Peak value) | No destroy or spark | V |
| 1.6 Insulation resistance | Ri | DC500V | >=100 | M Ohms |
| 1.7 Max.power | Pmax | Ambient Temp. +25°C | <=0.1 | mW |
| 2. Reliability test | 3. Operation Notice |
| 2.1 Intensity: Fix the probe, pull the lead by the striped wire end with 10 N force for ± 1 sec. No visible damage. | 3.1 Application: Temperature measure and control. |
| 2.2 High Temp. Store (in air) 80±3 °C 100h Delta R25/R25 <= 3% |
3.2 Operating Temp. Range: -40°C~+100°C |
| 2.3 Low Temp. Store (in air) -40±3 °C 1000h Delta R25/R25 3% |
3.3 Avoid measurement error caused by self heating with excess current. |
| 2.4 Heat and Humidity Stability 40±2°C 92%RH~98%RH 240h Delta R25/R25 3% |
3.4 Avoid excessive heat shock, the hot air blow should be at least 10mm from the probe, in cases when a heat shrink protection tube needs to be attached. |
| 2.5 Temperature Shift -50±3 °C X 30 min 105±3 °C X 30 min 5 times Delta R25/R25 <= 3% |
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TSM2 Temperature Sensor Meter
Temperature Sensor Meter - Configured for ICT leaf temperature sensors. 9 sensor capacity; IP65 rated enclosure; stand-alone logging capability to 4GB MicroSD Card; Windows and Mac software; breakout box; user manual.