Xylem WL705 ULTRASONIC WATER LEVEL SENSOR - Manual

WL705 Ultrasonic Water Level Sensor
01-313 5/4/12.doc
Specifications:
Sensor Range: WL705-003 4” (.33’) - 36” (3’)
WL705-012 4” (.33’) - 144” (12’)
WL705-048 15” (1.25’) - 576” (48’)
Supply Voltage: 10-30VDC (sensitivity reduced below 15 VDC)
Supply Current: 40mA
Averaging Time: 15 seconds
Temperature: -40º to +158º F Output Current:
4mA, maximum distance
20mA, minimum distance
Connections: Brown +15-30VDC
Blue
Ground
Green 4-20mA output (WL705-048)
Black 4-20mA output (WL705-012 & WL705-003)
Operation:
The WL705 sensors use ultrasonic sound waves to determine the distance from the face of the sensor
to the surface of the water by timing how long it takes the signal to return. An internal temperature
sensor automatically compensates for the temperature related variation in the speed of sound and a 15-
second averaging time reduces the affects of turbulence in the water. Note that the sensor must be
powered for 15 seconds for the output to stabilize.
WL705-012/003 WL705-048