Operation - Toshiba LF150 Instruction Manual

5. Operation

Follow the procedure described below to prepare before starting the flow measurement.
System Check
Check the wiring between the detector and converter.
Check the wiring between the converter and related instruments.
Make sure all the bolts of connection flanges to mount the detector are
securely tightened.
Make sure the direction of flow arrow is in accordance with actual
flow.
Make sure the detector and converter is grounded with less than 100
ohm ground resistance.
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 still the fluid in the detector
pipe.
Supplying Electric Power
Make sure the power supply is as specified.
Checking Converter Parameters
Check the converter parameter settings. Refer to the instruction
manual of the converter.
Zero Adjustment
Wait for 30 minutes to warm up the flowmeter internal circuitry. Then
making sure the fluid holds still in the detector pipe, adjust the zero point
of the flowmeter. Refer to the instruction manual of the converter.
On-line measurement
After checking the items and conducting the zero adjustment as listed above, let the fluid
go through the detector pipe. The output (such as 4–20 mA dc) directly proportional to
the flow rate can be obtained.
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