Badger Meter Irrigation Sensors - 1/2 and larger" - Manual (Page 13)

TROUBLESHOOTING
• If the voltage at the sensor input is less than 7.0 VDC in a no flow situation, disconnect the sensor from the barrier strip
and measure the voltage at the sensor input terminals of the barrier strip again. It should be between 8.0 VDC and
20.0 VDC. If the voltage at the sensor input is still below 7.0 VDC or 3.0 VDC, the problem may be with the monitor.
(hardware or programming)
• If you suspect that the sensor is bad, you can test the monitor circuitry by connecting a piece of wire to one of the
sensor input terminals and tap the other side of the wire to the other sensor input terminal. Shorting across the
sensor input terminals ON and OFF repeatedly allows the display to respond by trying to calculate a flow rate for the
frequency of your shorting action. If the display does not show a change from 0.00, it indicates a problem with the
monitor.
• If the monitor tests ok and there are any splices in the cable, break the sensor cable at the splice closest to the sensor
and retry the shorting test in step 2.
• If the cable tests ok, drain the pipe line, verify the pressure is off, and pill the clevis pin for Series 250 or remove top
lock nuts for Series 228 holding the sensor electronics. Spin the impeller by hand. If flows are noted on the display,
and impeller spins freely then the flow rates may have been below our design minimums or the line was full of air.
Try again. If the sensor fails to respond then replace sensor.
Installation & Operation Manual
Page 13 August 2012