Yamatake Corporation Operation of the Transmitter
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 5-45
5-7-1-2 Starting Measurement
The transmitter is ready for operation when zero-point adjustment is completed. This
procedure is described in the previous section. Before starting, always check the fol-
lowing:
(1) Check the correspondence between input and output values.
• If the output does not correctly reflect the input, check the range, check
the flange position on the process, and calibrate the transmitter again. If
an inappropriate output value persists for the input value, apply trouble-
shooting procedures ("Chapter 7 : Maintenance and Troubleshooting").
(2) Check the displayed data.
• If unstable value is displayed, adjust the damping time constant ("6-7-10 : Display
or Change Damping Time Constant").
(3) Perform the following items carefully:
• Disconnect the SFC from the transmitter terminal. Ensure that the termi-
nal is sufficiently tight, and not loose.
• Close the case cover. Screw in the cover firmly until it can no longer be
turned.
• This transmitter has a locking structure. After closing the cover, tighten
the lock using a hexagon wrench.
5-7-1-3 Stopping Measurement
Procedure
Turn OFF the transmitter.
CAUTION
When long-term shutdown is planned, always dismount the transmitter flange from the
tank, clean diaphragms with a soft brush, wash using a solvent, and store. Take care
not to deform or damage the diaphragms.
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