Emerson IFT9701 - Manual (Page 65)

Model IFT9701 Transmitter Instruction Manual 57
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Chapter 8
Troubleshooting
8.1 Customer service
For assistance, phone the Micro Motion Customer Service Department. Phone numbers are listed on
the title page of this manual.
8.2 General guidelines
Troubleshooting a Micro Motion flowmeter is performed in two parts:
• Tests of wiring circuit integrity.
• Observation of the transmitter's diagnostic tools, which include the diagnostic LED, fault
output levels, and optional LCD.
Follow these general guidelines while troubleshooting a Micro Motion flowmeter:
• Before beginning the diagnostic process, become familiar with this instruction manual and
with the instruction manual for the sensor.
• While troubleshooting a problem, leave the sensor in place, if possible. Problems may result
from the specific environment in which the sensor operates.
• Check all signals under both flow and no-flow conditions. This procedure will minimize the
possibility of overlooking some causes or symptoms.
8.3 Transmitter diagnostic tools
In some situations, troubleshooting requires use of the transmitter's diagnostic tools, which include
the diagnostic LED, fault output levels, and optional LCD.
8.3.1 Diagnostic LED
The diagnostic LED indicates the operating condition of the transmitter. Table 8-1 explains the
operating conditions indicated by the diagnostic LED. Figure 8-1 shows the location of the LED in
the intrinsically safe wiring compartment.
CAUTION
During troubleshooting, the transmitter could
produce inaccurate flow signals.
Set control devices for manual operation while
troubleshooting the flowmetering system.