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Enabling better global research outcomes in soil, plant & environmental monitoring.

SNiP-STP for Soil Temperature

The SNiP-STP is a 'Sensor Node Integrated Package' for LoRaWAN communication of real-time soil temperature measurement for continuous soil monitoring.

The SNiP-STP

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 Stainless Steel Thermistor measures soil, air or liquid temperature. 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

 

See Further Specifications on the AD-NODE
See Further Specifications on the THERM-SS Stainless Steel Thermistor

Applications:

  • Soil monitoring
  • Climate control
  • Concrete monitoring
  • Explosive testing

AD-NODE: For High Resolution Analogue & Digital Sensors

The AD-NODE is designed for those requiring precision in their analogue and digital measurements. With a 24-bit ADC, the AD-NODE supports two RTDs, a 0–10V with compressing range and a 4–20mA input. Each of the four dry-contact digital inputs is capable of simultaneously sampling at 1 kHz, with periodic reporting. Settings on the device can be altered remotely via LoRaWAN™ or locally via USB.

  • LoRaWAN™ low-power long-range connectivity
  • 2x 24-bit RTD
  • 1x 24-bit Voltage input (0-10 V with compressing range)
  • 1x 24-bit 4-20 mA
  • 4x 32-bit dry-contact counting digital inputs, 2 x digital outputs
  • 400 Hz 3-Axis Accelerometer
  • 3 x AA Lithium Energizer battery
  • Fully reconfigurable via LoRaWAN™ downlinks

 

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

 

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%