WMS 20 Series   Wind Speed Station

Wind Monitoring Station with Analog Outputs

The WMS-20 series consist of three individual wind monitor stations. The WMS-21 is a microprocessor based wind alarm station. It sounds an alarm buzzer and controls the operation of two electrical circuits whenever wind speed reaches either of two independent setpoints. An LCD display provides a readout of the measured wind speed and is also used to set the value of the setpoints. Self-contained relays for each alarm point can be used to actuate external devices such as air samplers or sirens. The WMS-22 series monitors wind speed and direction. Each parameter is converted into a 4 to 20mA signal for use by process controllers or monitoring systems. Two versions are offered, WMS-22A measures wind speed only, while the WMS-22B measures both wind speed and direction. SPECIFICATIONS WMS-21(Wind Speed) Measurement Range: 0 to 100 mph Transducer Type: Reed switch Avg Speed Resolution: 0.1 mph Threshold Speed: 0.8 mph Measurement Accuracy: 1 mph or 3% Controls: Protected push-button for run, or set variables, select menu items, increment and decrement alarm values Alarm On/Off Delay Range: 0 to 99 sec Contact Ratings: 3 A SPDT @ 24 Vdc Display: 2 line x 16 character LCD Character Size: 3 x 8 mm Setpoint 1 and 2: LED Supply Voltage: 12 Vac or Vdc Supply Current: 50 mA, 5 mA nominal Operating Temperature: -20 to 50ºC (-4 to 122°F) Dimensions: Anemometer: 114.3 H x 215.9 W mm (4.5 x 8.5") Sensor Cable Length: 12 m (40'), supplied Electronics Enclosure Size: 119.3 H x 198.1 W x 88.9 D mm (4.7 x 7.8 x 3.5") WMS-23 (Wind Speed and Direction), WMS-23S (Wind Speed) Measurement Range: 0 to 100 mph Transducer Type: Reed switch Threshold Speed: 0.8 mph Measurement Accuracy: 1 mph or 3% WMS-23 Only (Wind Direction) Azimuth Accuracy: ± 3% Mechanical Range: 0 to 360° Potentiometer Gap: 5° Threshold: 1.2 mph Measurement Range: 0 to 360° Current Loop: Output Span: 4 to 20 mA Proportioned: 0 to 100 mph, 0 to 360º Circuit Time Constant: 1 sec 2-Wire Loop Interface: Screw terminal block Supply Voltage: 8 to 30 Vdc Operating Temperature: -40 to 40ºC (-40 to 104ºF) Dimensions: Anemometer and Vane: 305 H x 254 W mm (12 x 10") Anemometer Only: 114.3 H x 215.9 W mm (4.5 x 8.5") Sensor Cable Length: 12 m (40'), supplied Electronics Enclosure Size: 114.3 H x 114.3 W x 63.5 D mm (4.5 x 4.5 x 2.5")