The 261C micro differential pressure transmitter can be used to measure the differential pressure or gauge pressure (static pressure) of non-conductive gases, and convert the pressure signal to a proportional standard DC current (4 ~ 20mA, current output type) or DC voltage signal (0.05 ~ 5.05VDC, or 0.05 ~ 10.05VDC, voltage output type).
This manual provides step‑by‑step instructions for installing and commissioning the Setra 261C micro differential pressure transmitter, including wiring, pressure‑tube routing, and recommended mounting practices. It also covers normal operation, maintenance procedures, and warranty information.
Detailed sections describe zero‑point and full‑scale adjustments, calibration requirements, measurement media limits, and electrical connection diagrams for both 4‑20 mA current‑output and voltage‑output versions. This manual is written in Chinese.
| Current output range | 4–20 mA |
|---|---|
| Voltage output range | 0.05–5.05 VDC or 0.05–10.05 VDC |
| Power supply (current output) | 9–30 VDC |
| Power supply (voltage output) | 9–30 VDC or 9–30 VAC |
| Operating temperature (electronics) | -18 °C to +65 °C |
| Accuracy class | ±1 %FS, ±0.4 %FS, ±0.25 %FS |
| Pressure connections | Two 3/16" ports and 1/4" hose |
| Maximum hose length (3/16") | 30 m |
| Maximum hose length (1/4") | 90 m |
The 4‑20 mA current‑output version requires a 9–30 VDC supply.
Connect both pressure ports to atmosphere, monitor the output, and adjust the zero potentiometer to 4 mA (±FS) for the 4‑20 mA version.
The electronics operate from –18 °C to +65 °C.
The transmitter comes with two 3/16" ports and a 1/4" hose, with optional custom fittings available.