Emerson Daniel Series, Руководство пользователя

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10 Corrective maintenance
10.1 Turbine meter troubleshooting
Use the table below to troubleshoot the turbine meter. Contact the nearest Daniel
Measurement and Control Sales or Service office for repairs. It is important that servicing
be performed by trained and qualified service personnel.
Table 10-1: Troubleshooting
Condition Probable cause Correction
(1)
No output pulses
from amplifier
module Input voltage to amplifier below
minimum required for operation Apply correct voltage (10 - 30 VDC)
Damaged or shorted pickoff
(Resistance across leads should be
600-900 Ohm) Replace pickoff
Damaged amplifier module Replace amplifier module
Customer receiver unit not operating Contact Daniel Customer Service
Meter rotor not turning Troubleshoot internal assembly
Turbine meter
rotor not turning Defective rotor bearing Return rotor assembly to factory for
replacement or repair
Rotor damaged by foreign material
passing through turbine meter Return rotor assembly to factory for
replacement or repair
Inaccurate
readout Foreign material on rotor blades Check and clean blades
Rotor blades are bent Return to factory for replacement or
repair
Defective accessory equipment Troubleshoot equipment
(1) * Refer to Prepare for mechanical disassembly for disassembly procedures.
10.2 Verify the return to operational condition
After correcting maintenance issues, verify that the turbine meter is working properly by
following the steps below.
Procedure
1. Inspect all electrical connections to ensure compliance with electrical codes and
safety regulations.
2. Inspect all flange bolts used to secure the turbine meter in-line to ensure that
correct mounting procedures are followed and that flange connections are leak-
free.
3. Evaluate the system setup to ensure that all components are in the correct
sequence for accurate product measurement: isolation valve, strainer, flow
straightener, turbine meter, downstream section, control valve, etc.
User manual Corrective maintenance
P/N 3-9008-515 March 2019
User manual 99