Toshiba LF414 manual Operation, Preparatory check, － ４１ －, ６Ｆ８Ａ０８７０, Don’T, System Check

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6. Operation

CAUTION

„Do not touch the terminal board when power is supplied.

Touching the terminal board when power is supplied can

DON’T cause electric shock.

„Do not touch the main body when high temperature fluid is being measured.

The fluid raises the main body temperature and can cause burns.

DON’T

Preparatory check

Follow the procedure described below to prepare before starting the flow measurement (described with regard to the entire flowmeter).

System Check

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.

Placing System On-Stream

„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.

Supplying Electric Power

„Make sure the power supply is as specified.

Checking Converter Parameters

„Check the configuration parameter settings. Refer to combined converter's manual.

Zero Adjustment

„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.

On-line measurement

„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.

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.

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