Flow Rate Indication Is Not Stable - Toshiba L5232 Instruction Manual

13.2.3 Flow rate indication is not stable

Is power supply voltage within
the specified range?
Aren't the cables slackened?
Are converter and detector
grounded with Class D ground
(100 or less ground resistance)?
Is the detector pipe filled with
fluid?
Isn't the fluid in the detector pipe
carrying bubbles?
Isn't there large-current or high-
voltage cable or equipment near
the flowmeter?
Contact your nearest Toshiba
representative.
START
YES
NO
YES
YES
NO
NO
- 161 -
NO
Use a power supply within the specified
range.
YES
Connect each cable securely to the
terminal block.
Ground the converter/detector with
NO
Class D ground (100
resistance) using IV wire of 5.5 mm²
minimum.
NO
Design piping so that the detector pipe
is filled with fluid all the time.
YES
Design piping so that the fluid does not
carry bubbles.
Install the flowmeter away from the
YES
equipment producing electromagnetic or
electrostatic interference.
6F8A0917
or less ground