Badger Meter Series 4000 Sensor - 1/2, 3/4", 1" - Manual (Page 18)

7. If the sensor was working and a rebuild kit was installed due to a failure of the impeller or shaft and the sensor did not
return to working order, check to ensure that the impeller was installed in the proper direction. If the impeller was
installed backwards to the flow direction, no signal pulse will be generated even if the impeller spins freely.
8. Should you experience any other difficulties with the sensor, please consult the factory or your local representative.
Please have a description of the problem, model, serial number, and application information available when you call.
Analog Circuit
1. Connect power supply and ammeter in a series loop.
2. With no flow in the pipe, check to see if the output is reading 4mA. If the output is greater or less than 4mA then the
analog electronics assembly must be recalibrated at factory.
3. With flow in the pipe the output should be something higher than 4mA but not greater than 20mA. If you cannot get
flow through the system you can simulate flow two ways. The first way is to blow into one side of the unit to make
impeller spin and the other is to pass a metal object (nut driver, wrench, etc...) across the back of the electronics housing.
Either one of the last two methods will excite the analog output to change and read greater then 4mA.
4. If the analog output does not change with any of the actions done in step three then the electronics assembly is
defective.
5. If the analog changes when you pass a metal object across the rear of the electronics assembly but does not at any other
time then inspect the impeller assembly.
Series 4000
Page 18 April 2012