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INF-TN1FSH-E
- 91 -
5. MAINTENANCE AND INSPECTION
5.1. Daily inspection
Visually check the following.
•
Check the screw of the flow transmitter cover for looseness.
⇒
Fasten.
•
Check the cable gland for looseness.
⇒
Fasten.
•
Check the stainless belt of the detector for sag.
⇒
Stretch.
•
Check the LCD for error display (measurement error).
⇒
Check that the state of detector mounting or wiring is normal. Check that the pipe is filled with fluid.
Decrease air bubbles or foreign substances, if contained in the fluid too much.
5.2. Periodic inspection
5.2.1. Checking zero point
Stop the flow of the fluid, fill the pipe with fluid, and check zero point.
⇒
Refer to 4.4.6. Zero adjustment
5.2.2. Calibrating current output circuit
Adjust the 4 mA and 20 mA analog outputs.
⇒
Refer to 4.4.16.1. Analog output adjustment and check
5.2.3. Calibrating temperature sensor circuit
Adjust the resistances (100
Ω
and 140
Ω
) of wedge temperature measurement.
⇒
Refer to 4.4.16.3. Calibrating temperature sensor