This manual describes the operation, installation, wiring, and specifications of the Sinopec FC series intelligent differential pressure, pressure and level…
The FC series intelligent transmitters are capacitive pressure devices used to measure differential pressure, pressure and liquid level for various fluids. They convert the measured pressure into a 4‑20 mA current or HART signal and offer high accuracy and stability.
The document provides a functional overview, operating principle, detailed installation instructions, wiring guidelines, adjustment procedures, and full technical specifications, including power supply, output, temperature range, and pressure limits. This manual is written in Chinese.
| Power supply voltage | 12 – 45 VDC (typical 24 VDC) |
|---|---|
| Output signal | 4 – 20 mA DC / HART |
| Load resistance (24 VDC) | 0 – 600 Ω |
| Operating temperature range | -40 °C to 85 °C (amplifier) |
| Basic measurement error | ±0.075 % (adjustable to ±0.05 %) |
| Damping | None (time constant <0.1 s) |
| Startup time | 1 s (no pre‑heat required) |
Zero, span, damping and output check buttons are located on the front panel of the transmitter; they can be adjusted manually or via a Rosemount 268 communicator.
The transmitter operates from 12 – 45 VDC, with 24 VDC being the typical supply voltage.
Signal terminals are in a separate compartment; use an unshielded twisted‑pair cable, keep it away from power lines, and seal any wiring holes to prevent moisture.
The amplifier works from –40 °C to 85 °C; the silicone‑oil‑filled measurement element works from –40 °C to 104 °C.