Connect two-wire or three-wire, three-wire from the terminal AGND (GND) lead break wire with the case short or the black jumper cap of the rear panel from ON to OFF end, or remove the signal line at the end of the instrument, a single measurement of the instrument end of the current output is normal (three-wire only)
Whether the wiring is laid in a slot with strong electricity (220V or 380V) and whether the shield is grounded
The power supply can be connected to 24V and IOUT alone to measure whether the current is normal (two-wire only)
Solutions:
● Three-wire AGND (GND) lead shortly to case
● The shield of the two/three-wire current line must be grounded
● Replace the power supply if the source of interference is the power supply
● If the wiring is faulty, change the wiring lines
● Add signal isolator for line crosstalk, add a filter for the power supply or wiring problems
Return circuit board to factory or issue replacement board
● Note: If the meter shows normal current output abnormalities exclude steps above
The formula for calculating current.
q – instantaneous flow rate (m3/h)
Q – flow rate upper limit (m3/h)
A – current current output value (mA)