Dwyer UXF3 - Manual (Page 111)

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6.2.3. How to measure the insulation resistance
6.2.3.1. Flow transmitter
Turn off power before opening the flow transmitter cover.
The power terminals (N,L) and the output terminals (lout, DO1, DO2, DO3) are provided with an arrester as
standard.
To measure the insulation resistance between the power terminal and the grounding terminal, and between
each output terminal and the grounding terminal, remove the earth plate of the power terminal block and the
ground wire of the output terminal as shown by the following figure.
If the communication board (option) is provided, remove it before measuring.
The insulation resistance performance of the equipment is 100 M
ȍ/500 V DC.
Be sure to return the earth plates and ground wire in position after the measurement is completed.
CAUTION
L N GND GND
Remove the ground plate.
Remove the ground wire.
Bulletin F-107-UXF3