Yamatake Corporation Operation of the Transmitter
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 5-37
5-4-2-2 Starting Measurement
Procedure
Operate the valve with the following procedure and apply the process pressure to
transmitter. Display the measured value by operating the SFC keys.
Process pressure applying operation
Zero-point adjustment during measurement
When adjusting the zero point during measurement, refer to Item "5-8 : Zero-point
Adjustment -- Based on Actual Liquid Level".
Measured value displaying operation
The following case is explained here:
• Low limit of setting range : 0 kPa
High limit : 50 kPa
• Input pressure to the transmitter : 25 kPa
In this case, the output is 50%.
• If the output value does not correctly reflect the input value, check again
the range and calibrate the transmitter. If inappropriate output value per-
sists for the input value, apply troubleshooting procedures ("Chapter 7 :
Maintenance and Troubleshooting").
• If the displayed data value is unstable, adjust the damping time constant
("6-7-10 : Display or Change Damping Time Constant").
Step Description
1 Gradually open the main valve (Refer to Figure 4-12).
Step Description SFC screen
4
Press the and keys in
that order.
5
Press the key.
6 After completing measurement, remove the clip of the communication
cable and then switch the process to normal operation.
CAUTION
Securely close the case cover of the transmitter. Take pre-
cautions against moisture ingress into the transmitter body.
Water entering the transmitter will damage the internal ter-
minals and the electronics module.
SHIFT
OUT-
J
PUT
INPUT
OUT-
J
PUT
INPUT
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