Emerson Micro Motion H Series, Installation Manual, Page: 5 / 24

1 Planning
1.1 Installation checklist
□
Make sure that the hazardous area specified on the approval tag is suitable for the
environment in which the meter will be installed.
□
Verify that the local ambient and process temperatures are within the limits of the
meter.
□
If your sensor has an integral transmitter, no wiring is required between the sensor and
transmitter. Follow the wiring instructions in the transmitter installation manual for
signal and power wiring.
□
If your transmitter has remote-mounted electronics, follow the instructions in this
manual for wiring between the sensor and the transmitter, and then follow the
instructions in the transmitter installation manual for power and signal wiring.
Table 1-1: Maximum cable lengths
Cable type To transmitter Maximum length
Micro Motion 4-wire All 4-wire MVD transmitters — 1,000 ft (305 m) without
Ex-approval
— 500 ft (152 m) with IIC
rated sensors
— 1,000 ft (305 m) with IIB
rated sensors
Table 1-2: Maximum lengths for user-supplied 4-wire cable
Wire function Wire size Maximum length
Power (VDC) 22 AWG (0.326 mm
²
) 300 ft (91 m)
20 AWG (0.518 mm
²
) 500NaN ft (NaN m)
18 AWG (0.823 mm
²
) 1,000 ft (305 m)
Signal (RS-485) 22 AWG (0.326 mm
²
) or larger 1,000 ft (305 m)
□
For optimal performance, install the sensor in the preferred orientation. The sensor will
work in any orientation as long as the flow tubes remain full of process fluid.
Table 1-3: Preferred sensor orientation
Liquids
Installation Manual Planning
20002346 January 2019
Installation Manual 5