Yamatake Corporation Maintenance and Troubleshooting
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 7-19
7-4-2 :Calibrating Output Signals
7-4-2-1 Before You Start
Output signal calibration (adjustment of the D/A conversion unit) is unnecessary
under ordinary operating conditions. Normally, this work is performed by an autho-
rized service provider of Yamatake. For end-users who must perform this work, pre-
pare the following equipment in advance:
Equipment
• High-precision ammeter with accuracy of 0.03% FS or higher
• Resistor with a resistance of 250Ω ±0.005%
• SFC
Set-up
Refer to Figure 7-4. Connect the SFC and an ammeter.
Refer to 3.2.1 Starting Communications. Check to ensure proper wiring. Check that
the SFC and the transmitter are in the normal communication status.
Figure 7-4 Connection for Calibration.
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