Login   Home Products Services Partners Company Contact  




Who's Using Our Products?

Vegetronix Soil Temperature Sensor Probes

THERM200 - Soil Temperature Sensor Probe

The THERM200 is a soil temperature probe, which has a temperature span from -40°C to 85°C.  It outputs a voltage linearly proportional to the temperature, so no complex equations are required, to calculate the temperature from voltage.  It is highly accurate with 0.125°C of resolution

The sensor has a simple 3 wire interface: ground, power, and output,  and  is powered from 3.3V to 20VDC, and outputs a voltage 0 to 3V. Where 0 represents -40°C and 3V represents 85°

The probes can be buried, or inserted into pots. Since the blade is so narrow, it can easily be inserted into potted plants.    

The temperature sensor can be used with our soil moisture sensors, and together they can be used to detect the presence of ice.  

The THERM200 is compatible with our data Loggers, or  any other third-party data logger. 

Thermistor based temperature sensors, are typically inaccurate, and use the complex Steinhart-Hart equation which contains complex calculations such as logarithmic and third order terms, which are difficult for microcontrollers to compute. 

Once you've tried the THERM200, you'll never want to use a thermistor based sensor again.  

 

THERM200 - Soil Temperature Sensor Probe
THERM200 - Soil Temperature Sensor Probe

 

Soil Temperature Sensor Probe Applications

  • Environmental monitoring.
  • Weather stations.
  • Ice detection systems.
  • Irrigation and sprinkler systems.
  • Temperature monitoring of bulk foods.

Soil Temperature Sensor Probe Features

  • Low cost .
  • No need to calibrate.
  • Rugged design for long term use. 
  • Small size. 
  • Consumes less than 3mA for very low power operation.
  • Precise measurement.
  • Output Voltage is linear to temperature. 
  • No complex Steinhart-Hart equations are needed to convert voltage to temperature. 
  • Wide supply voltage range. 
  • Can be buried and is water proof. 
  • Probe is long and slender for wider use, including smaller potted plants.

Other Vegetronix Products of Interest

Soil Temperature Sensor Probe Pricing and Ordering Info

Contact us for pricing information. 

ORDER INFO
Part Number Description Price Purchase
THERM200  Soil Temperature Sensor Probe $29.95

Soil Temperature Sensor Probe Specifications

THERM200 Temperature Sensor Probe
Power consumption < 3mA
Supply Voltage 3.3V to 20 VDC.
Dimensions See drawing below.
Power on to Output stable 2 seconds
Output Impedance 100K ohms
Operational Temperature -40ºC to 85ºC
Accuracy ±0.5°C 
Resolution 0.125ºC
Output Voltage Range 0 to 2.44 linear to temperature
Voltage Output Equation Temperature (ºC) = Vout*41.67 -40
Cable Length 2 meters

 

Soil Temperature Sensor Probe Wiring Table

Bare Ground
Red POWER:  3.3V to 20 VDC.
Black OUT: 0 to 2.44 linear to temperature

Soil Temperature Sensor Probe Drawing

VG400 Soil Moisture Sensor Probe Drawing

THERM200 Soil Temperature Sensor Drawing

 

How to Get Started with the Soil Temperature Sensor Probe 

The best way to get started is to order a few sample soil temperature sensor probes and try them out in your application.  Please use our online ordering system to purchase units. 

 

[Employment] [Site Map] [News] [Contact Us] [Third Party Solutions]

Call us now at 801-938-4264  -  502W 9460S. Sandy, UT 84070

© Copyright 2008 Vegetronix.   All rights Reserved.