• Transmetteur (radar) de niveau d'eau

Transmetteur (radar) de niveau d'eau

The WL900 Radar Level Transmitter offers a logical extension to ultrasonic devices. It is suitbody>

Variety of Uses

The WL900 is ideal for a variety of water and wastewater applications involving a reflective liquid that has a foaming surface, vapors, or dusty conditions beyond ultrasonic wave capabilities.

State of the Art Radar Technology

The WL900 uses a state of the art radar pulse technology, which provides accurate and reliable level measurements over a wide 10-inch to 50-foot range. The unit’s microwave sends out very short pulses, which reflect off a target and are received back by the antenna for processing.

Simple Operation

With its single push-button calibration system, the WL900 is easy to set up and maintain. Simply aim the WL900 at your low range level set point and push the button to lock in the setting– then do the same with the high level set point. This may be done before permanent installation by aiming at a wall and using a tape measure to determine your exact range.

Rugged Design

The unit’s rugged NEMA 4 (IP65) housing is available in either aluminum or 316L stainless steel for corrosive environments. A standard 2 inch NPT (M) process connection allows for quick and versatile installation. In addition, the unit’s polypropylene antenna rod is virtually corrosion proof.


  • Accurate, non-contact measurement
  • Works in conditions where ultrasonic is not acceptable
  • Pulse radar measurement range 0.83 to 50 ft
  • Simple push-button calibration
  • Standard 4-20 mA signal output


Power AC:  115 VAC, 60 Hz (± 20%), 1.7 VA
DC: 12 to 30 VDC, 0.07 Amps max. @ 24 VDC
Outputs  Signal: 4-20 mA, 6.1 μA resolution; 750 ohms (isolated on 4-wire models only)
Communication: RS-232
Accuracy ±0.25% of max. target range (in air)
Frequency 6.3 GHz
Transmitter Power 50 μW average
Calibration  Push-button or optional programmable
Antenna  Polypropylene over dielectric rod
Beam Angle 12 degrees
Operating Temperature -40 to 140°F (-40 to 60°C)
Operating Pressure 150 psi max
Installation Category  Class II
Process Connection 2 inch NPT
Conduit Entry  1/2 inch NPT standard
Housing  Aluminum or 316L stainless steel
Ingress Protection  NEMA 4 (IP65)
Approvals  FCC Part 15 - low-power communication device
Weight  3.6 lbs (1.63 Kg)
Dimensions  4 in dia. x 18 in long (10cm dia. x 45.7cm long) see drawing


Ideal for water and wastewater applications where conditions are beyond ultrasonic wave capabilities, such as those involving a reflective liquid that has a foaming surface, vapors, or dusty conditions.

Ordering & Options

Order NO.  Power  Enclosure
WL900-AC  115VAC (60Hz),
230VAC (50Hz)
WL900-DC  12 to 30 VDC  Aluminum
WL901-AC 115VAC (60Hz),
230VAC (50Hz) 
Stainless Steel
WL901-DC  12 to 30 VDC  Stainless Steel