The current output is not normal
(1) Three-wire current, current output abnormal
● Pay attention to the wiring: 24V, COM, IOUT, I+ (optional)
Measure the voltage between IUOT and COM, if there is, there is current, use a multimeter to measure the current again, if not, the board is faulty.
(2) Two-wire current wiring, the meter does not light up without output or the meter does not light up with output
● Confirm the wiring, connect 24V, GND or other
● Multimeter to further test power supply and output
● Board failure return to factory or send replacement board
(3) The flow rate displayed on the system does not match the meter
● Confirm that the upper limit of the system is the same as the meter setting
Use a multimeter to test if the current corresponds to the flow rate displayed on the meter, using the following formula
q – instantaneous flow rate (m3/h) Q – upper limit of flow rate (m3/h) A – current current output value (mA)
Interference leads to the general phenomenon: the meter shows normal output shows full range or the meter shows normal output jumps around
Solutions.
● The shield of the two/three-wire current line must be grounded
If the source of interference is the power supply, replace the power supply.
If there is a problem with the wiring, change the wiring line
● Add signal isolator for line crosstalk, add a filter for the power supply or wiring problems
● Return circuit board to factory or send replacement board