Yamatake Corporation Considerations before installation
ST3000 Smart Transmitter Series 900 Electronic Differential Pressure/Pressure Transmitter 3-3
Temperature Limits
The ambient operating temperature limits for the SFC are -10° to 50°C (14° to 122°F)
with relative humidity in the range of 10 to 90% RH.
Usage guidelines
• Be sure to put an analog control loop into its manual mode before initiating SFC
communications with an ST3000 Smart Transmitter operating in its analog mode.
Communication superimposes digital signals on the loop wiring that could affect
the analog control signal. This is not necessary when the transmitter is operating in
its digital (DE) mode.
• Be sure the power supply voltage does not exceed 45V DC. The ST3000 Smart
Transmitter and SFC were designed to operate with voltages below 45V DC.
• Be sure there is at least 250 ohms of resistance between the SFC and the power
supply for proper communications.