Best Practices; Power Requirements - Emerson Micro Motion Installation Manual

Planning
1.2

Best practices

The following information can help you get the most from your meter.
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1.3

Power requirements

Following are the DC power requirements to operate the meter:
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Handle the meter with care. Follow local practices for lifting or moving the meter.
Perform a Known Density Verification (KDV) check of the meter prior to installing
the meter.
For the PFA-coated tines, always fit the protective cover over the tines when the
meter is not in use. The tine coating is not resistant to impact damage.
Always store and transport the meter in its original packaging. For the long-stem
meters, be sure to include the transit cover secured by the grub screws.
Do not use liquids that are incompatible with the materials of construction.
Do not expose the meter to excessive vibration (greater than 0.5 g continuously).
Vibration levels in excess of 0.5 g can affect the meter accuracy.
For optimal performance of the meter, ensure that operating conditions correspond
to the meter calibration-type code and boundary.
Ensure that all piping connections conform to the local and national regulations and
codes of practice.
Properly tighten the transmitter housing cover after wiring to maintain ingress
protection and hazardous area approvals.
After installation, pressure test the meter and the associated pipework to 1½ times
the maximum operating pressure.
Install thermal insulation in the meter, the inlet, and the bypass-loop pipeline to
maintain stable temperatures. The thermal insulation should cover the process
connection.
24 VDC, 0.65 W typical, 1.1 W maximum
Minimum recommended voltage: 21.6 VDC with 1000 ft of 24 AWG (300 m of
2
0.20 mm ) power-supply cable
At startup, power source must provide a minimum of 0.5 A of short-term current at
a minimum of 19.6 V at the power-input terminals.
Micro Motion Fork Viscosity Meter