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Installation Manual
20002346
2
Planning
2.1
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.
Failure to abide by approvals can cause an explosion resulting in injury or death.
□
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 2-1: Maximum cable lengths
Cable type
Micro Motion
4-wire
Table 2-2: Maximum lengths for user-supplied 4-wire cable
Wire function
Power (VDC)
Signal (RS-485)
□
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.
Installation Manual
WARNING
To transmitter
All 4-wire MVD transmitters
Maximum length
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
Wire size
22 AWG (0.326 mm²)
20 AWG (0.518 mm²)
18 AWG (0.823 mm²)
22 AWG (0.326 mm²) or larger 1,000 ft (305 m)
Planning
October 2020
Maximum length
300 ft (91 m)
500 ft (152 m)
1,000 ft (305 m)
7
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