Toshiba LF434 - Manual (Page 33)

TOSHIBA
6 F 8 A 0 7 7 0
6, Operation
A
CAUTION
n Do not touch the LF434/LF404 maio body when
high temperature fluid h being measured«
The fluid raises the main
body leinperaturc and can
cause burns when touched.
0
DON’T
6,1 Preparatory check
hollow the proceclurc described bdo^v to prepare before starling the flow measuremem.
System Check
Check the wiring bciween the converter and related instruments,
Make sure all the boils of connection flanges on which the flowmeter is mounted
securely tightened.
Make sure the direction of flow arrow is in accordance with actual flow.
Make sure the flowmeter is grounded with ICO ohm or less ground resisiance.
Make sure the converter housing covers arc securely tightened.
Placing System On-Stream
Let the fluid go through the detector pipe. When the detector is filled with the
fluid, stop the fluid and keep i t s t i l l ¡ n the detector pipe.
Supplying Electric Power
Make sure the power supply is as specified.
Checking Converter Parameters
Check the configurntion paramcicr settings. Refer to Chapter 7, "‘LCD Display
and Controls,” Chapter 8, ‘"Configuration Parameter Setting,and Chapter 11,
“Commiinications Eunclioii,”
Zero Adjustment
Wail for 30 minutes to warm up the flov-mieter. Then making sure the fluid holds
still in the detector pipe, starts the zero adjustment.
Refer 10 6 2 , “Zero Adjustment.”
On-line measurement
Alter checking the items and conducting the zero adjustment as listed above, let the fluid go
through the detector pipe. Output (4-20 iriA dc) directly proportional to the flow' rate can be
obtained.
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