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Klinger CMF
Instruction Manual
Page 64
Replace the core processor or
transmitter.
No flow output while
non-zero flow
Current loop or frequency
output is zero
Flow direction error
Low flow cutoff set too high
Zero calibration error
Flow coefficient error
Closed loop control voltage
is too low
Sensor failure
Configuration error in
current loop or frequency
Confirm the installation
direction, and configuration of
flow direction
Choose appropriate low flow
cutoff
Zero calibration
Verify flow coefficient
Ensure closed loop control
voltage is appropriate
Avoid two phase flow
Verify configuration of current
loop and frequency setting
Zero calibration failure,
zero flow instability.
Vibration amplitude is
small and unstable
(DN1~DN5: amplitude of
vibration < 40mV;
DN15~DN250: vibration
amplitude < 80mV).
The flow meter output is
obviously wrong, and the
measurement data is not
stable.
Flow during zero calibration
External forces on
flowmeter
Vibration interference or
pipe harmonic resonance
Radio frequency
interference
Wiring Problems
Sensor fault
Ensure no flow during zero
flow calibration
Ensure flow meter is
installed per the installation
section
Ensure flowmeter is isolated
from sources of vibration
(even other flowmeters)
Investigate sources of radio
frequency interference
Verify wiring and confirm the
reliability grounding of the
sensor and transmitter
Call Walsn
7.4.3 Density measurement problem
The typical causes of, and solutions to, this problem are laid out in table 8-4
Table 8-4 Density measurement problem
Problem
description
Possible causes of
Troubleshooting
Solution
Density output
error
Wiring problems
Density calibration
coefficient error
Slug flow
Flow tube coating
Pipe vibration
Sensor physical
characteristic parameters
changed
Verify wiring and grounding
Verify that all parameters match the
data on the nameplate of the sensor
Avoid slug flow
Purge flow tube
Ensure flowmeter is isolated from
sources of vibration (even other
flowmeters)
Change the installation location
Density output
Density coefficient error
Verify that all parameters match the
