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Vegetronix Ice Sensor Probes

 

Our patent pending soil moisture sensor probes can also be used to measure and monitor the build up of ice in refrigeration systems.  Because our probe measures the dielectric constant of the ice using transmission line techniques, it will work despite Ice being non-conductive, and will not corrode over time as does conductivity based probes. Our probes are small, rugged, and consume under a milliamp of power. 

We offer two probes in the VG400 series.  The VG400 which has an output range of 0 to 3V and and the VG400-LV which has an output range of 0 to 1.8V related proportionally to the surface of ice touching the probe. The VG400-LV is so power efficient that it can be run continuously for over 300 hours from a single coin battery, or over 5 years if the sample is read once per minute. 

VG400 - Vegetronix Soil Moisture Sensor Probe
VG400 - Soil Moisture and Ice Sensor Probe

VG400 Moisture and Ice Sensor Probe Applications

  • Weather applications.
  • Refrigeration system monitoring. 

VG400 Moisture and Ice Sensor Probe Features

  • Extreme low cost with volume pricing. 
  • Not conductivity based.
  • Insensitive to salinity.
  • Probe does not corrode over time. 
  • Rugged design for long term use. 
  • Small size. 
  • Consumes less than 600uA for very low power operation.
  • Precise measurement.
  • Patent pending technology. 
  • Output Voltage is proportional to amount of contact with ice. 
  • Wide supply voltage range. 
  • Can be buried and is water proof. 

Other Vegetronix Products of Interest

Moisture and Ice Sensor Probe Pricing and Ordering Info

Contact us for pricing information. 

ORDER INFO
Part Number Description Price Purchase
VG400  Standard Voltage, Moisture and Ice Sensor Probe $29.95
VG400-LV Low Voltage, Moisture and Ice Sensor Probe $29.95

Sensor Relay Boards

The quickest way to evaluate if the VG400 series is right for you is to also order some of our sensor relay boards.  The relay boards accept input from a single sensor and control a solid state or mechanical relay.  The relay contacts can be configured to close when ice is present, or open when ice is present.  The ice/no-ice threshold is easily set by an an on- board variable resistor, which can be tuned with a small screwdriver.  With our relay boards, within minutes you'll be using your VG400 probes to control, valves, alarms or home automation systems.  

Moisture and Ice Sensor Probe Specifications

VG400 Probe (Standard Voltage Probe)
Power consumption < 800uA
Supply Voltage 3.3V to 20 VDC.
Output 0 to 3V
Dimensions See drawing below.
Power on to Output stable 400 ms
Output Impedance 100K ohms

VG400-LV (Ultra-Low Voltage Probe)
Power consumption < 600uA
Supply Voltage 2.0V to 20 VDC.
Output 0 to 1.8V linear
Dimensions See drawing below.
Power on to Output stable 400 ms
Output Impedance 100K ohms

Soil Moisture Sensor Probe Wiring Table

Bare Ground
Red POWER:  3.3V to 20 VDC.
Black OUT: (0 to 3V)

VG400 Moisture and Ice Sensor Probe Drawing

VG400 Ice Sensor Probe Drawing

VG400 Soil Moisture sensor Drawing

Soil Moisture and Ice Sensor Probe Technical Literature

See our Soil Moisture Sensor Probe Application Notes for reference designs and information on how to use the soil moisture and ice sensor probe in larger systems. 

 

Still have questions? See our VG400 Soil Moisture and Ice Sensor Probe FAQ page.

 

How to Get Started with the Soil Moisture and Ice 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. 

 

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