Emerson Micro Motion 2500, Configuration And Use Manual

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Postrequisites
To return to normal operation:
1. Plug the terminal blocks into the terminal board.
2. Replace the lid on the sensor junction box.
Important
When reassembling the meter components, be sure to grease all O-rings.
12.31 Check the core processor LED
The core processor has an LED that indicates different meter conditions.
1.
Maintain power to the transmitter.
2. Remove the core processor lid. The core processor is intrinsically safe and can be
opened in all environments.
3. Check the state of the core processor LED.
Postrequisites
To return to normal operation, replace the core processor lid.
Important
When reassembling the meter components, be sure to grease all O-rings.
12.31.1 Core processor LED states
Standard core processor LED states Table 12-8:
LED state Description Recommended actions
1 flash per second (ON 25%, OFF
75%) Normal operation No action required.
1 flash per second (ON 75%, OFF
25%) Slug flow (two-phase flow) See Section 12.27 .
Solid ON Zero or calibration in progress No action required.
Core processor receiving be-
tween 11.5 and 5 volts Check power supply to transmitter.
3 rapid flashes, followed by
pause Sensor not recognized Check wiring between transmitter and sensor.
Improper configuration Check sensor characterization parameters.
Broken pin between sensor and
core processor The meter requires factory service.
4 flashes per second Fault condition Check alert status.
Troubleshooting
194 Micro Motion Model 2500 Transmitters with Configurable Input/Outputs