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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-23 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-23S measures wind speed only, while the WMS-23 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")
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† All dollar amounts on this site are shown in Singapore currency.
Note: Units Supplied with sensor cable and operator’s manual.
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