Toshiba LF414 - Manual (Page 38)

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6. Operation
Preparatory check
Follow the procedure described below to prepare before starting the flow measurement (described with
regard to the entire flowmeter).
Check the items listed below
„ Check the wiring between the converter and related instruments.
„ Make sure all the bolts 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 100 ohm or less ground resistance.
„ Make sure the housing covers are securely tightened.
„ Let the fluid go through the detector pipe. (Note 1)
„ When the detector is filled with the fluid, stop the fluid and keep it still in the detector pipe.
„ Make sure the power supply is as specified.
„ Check the configuration parameter settings. Refer to combined converter's manual.
„ Wait for 30 minutes to warm up the flowmeter. Then making sure the fluid holds still in the
detector pipe, starts the zero adjustment. Refer to combined converter's manual.
„ After checking the items and conducting the zero adjustment as listed above, let the fluid go
through the detector pipe. Output (4–20 mA dc) directly proportional to the flow rate can be
obtained.
CAUTION
„ Do not touch the terminal board when
power is supplied.
„ Do not touch the main body when high
temperature fluid is being measured.
DON’T
Touching the terminal board
when power is supplied can
cause electric shock.
DON’T
The fluid raises the main body
temperature and can cause burns.
System Check
Placing System On-Stream
Supplying Electric Power
Checking Converter Parameters
Zero Adjustment
On-line measurement
Note 1: If the detector pipe is not filled with the fluid to be measured, the flow rate will be
indefinite and unable to be measured. Before using the flowmeter , be sure to fill the
detector pipe the fluid to be measured.