Xylem WL450 ALL STAINLESS STEEL WATER LEVEL TRANSMITTERS - Manual (Page 2)

AIL001-QS-WL450Rev-E.doc
Rev. E
Quick Reference
WL450 Level Sensor
Wiring Notes:
ONLY CONNECT
SENSOR WITH THE
POWER TURNED OFF
• Connect sensor cable to Analog Input Current terminals of data
collection device (e.g.: Global GL500 Data Logger, PLC, RTU, etc.)
Black
White
+8-28VDC
Supply
4-20mA
Input
WL450
sensor
4-20mA
+8-28
VDC
(Black)
GND
(White) RS485B
(Yellow)
RS485A
(Blue)
WL450
sensor
RS485
• When testing or troubleshooting the level sensor, disconnect it from
your system power source and connect to an independent battery or
power supply and read the output with a multimeter.
• This senor requires a minimum ½ second warm-up time to provide an
accurate readout.
• To test the actual sensor output, submerse sensor in a water column
and look for a current output at or above 4mA and below 20mA. The
output increases with increasing depth. DO NOT EXCEED THE
MAXIMUM RATED DEPTH OF THE SENSOR OR IRREPARABLE
DAMAGE TO THE SENSOR MAY OCCUR!