MICROWAVE SENSOR
 
The Hydro-Probe II is the first microwave sensor to use digital measuring techniques, providing greater accuracy and range of measurement than any other sensor on the market and working with a wider range of materials than ever before. Physical dimensions remain the same for complete compatibility with the original Hydro-Probe.

HydroProbe II MICROWAVE SENSOR

Features
Specification

 
MEASURING IN THE FLOW
BATCH AVERAGING
INCLINATION OF MEASUREMENT FACE
ONE POINT TECHNIQUE ENABLES SENSOR TO BE READILY CALIBRATED ON SITE
MATCHING CHARACTERISTICS
SIMPLE POWER REQUIREMENTS
TEMPERATURE MEASUREMENT
Construction
Body: cast stainless steel (ANC3B 18/8SS) Endcap: stainless steel (AISI 316) Faceplate: alumina ceramic
Range of moisture
For bulk materials the sensor will measure up to the point of saturation, typically 0-20% for construction materials.
Penetration
Approximately 75-100mm dependent on material.
Power supply
+15Vdc to +30Vdc. 3 watts max.
Operating temperature
0-60 degrees C. The sensor will not measure moisture in frozen materials.
Refresh rate
Outputs are updated approximately 25 times per second.
Analogue output
Configurable 0-20mA or 4-20mA current loop source. For 0-10Vdc output an external 500R load resistor should be connected across the analogue output at the control system.
Discrete inputs
The batch average start stop or moisture/temperature multiplexing functions can be controlled via the digital inputs. Refer to 'Connecting the Cable' section of the manual for more information.
Digital Communications
Opto-isolated RS485 2-wire port. Refer to your distributor for read/write access to sensor parameters and values.
Grounding
The sensor body is connected to the cable shield. Ensure equipotential bonding of all exposed metalwork. In areas of high lightning risk correct and adequate protection should be used.