Microsensor MDM7000 Operation Manual page 14

floating, and the control cabinet side being grounded
c) Devices equipped with surge protectors must be grounded to
ensure proper function. The most effective way to ground the
transmitter housing is to directly connect the protective ground
terminal to an impedance ≤5Ω to the ground.
d) Try to avoid direct proximity to user devices or wiring of electrical
and electronic devices that may cause interference.
e) The cable entry thread hole on the housing is M20×1.5, and the
matching cable entry device shall be used；
f)Flameproof transmitter must be disconnected from power before
wiring. After wiring, tighten the back cover and rotate the
connector to compress the cable, ensuring dust and water
resistance as well as cable fixation；
g) Avoid nearby high-power electrical equipment and utilize
shielded cables (the shielding layer is well grounded at both
ends).
Warning
For flameproof transmitters, under powered conditions, it is strictly
prohibited to open the rear cover or front glass. Therefore, during
on-site use, hand terminal should not be used to calibrate the
transmitter, but the transmitter buttons can be used for calibration.
5.1.2 2-wire HART communication connection
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