The product is a precision pressure and flow measurement differential pressure transmitter, which uses ceramic fulcrum lever technology, delivers calibrated, temperature-compensated sensor signals, available as standard voltage or current outputs, and is ideal for registering low air flow in air conditioning systems and for the measurement of fine pressures in environmental, laboratory and clean- room applications (air and non-corrosive gases).
The Huba 694 series differential pressure transmitter is designed for fine pressure and flow measurement in air‑conditioning, laboratory and clean‑room applications. It offers calibrated, temperature‑compensated sensor signals with optional voltage or current outputs and can be equipped with an LCD display.
The manual covers mounting options, electrical connections, power supply requirements, EMC compliance, and detailed specifications such as pressure range, linearity, response time, and environmental limits. Order code tables and accessory options are also provided.
| Pressure range | 0 to 50 mbar |
|---|---|
| Temperature range (operating) | 0 °C to +70 °C |
| Storage temperature | -10 °C to +70 °C |
| Response time | < 10 ms |
| Power supply (3‑wire) | 13.5 … 33 VDC / 24 VAC ±15 % |
| Output options (current) | 0 … 20 mA, 4 … 20 mA |
| IP rating (with cover) | IP54 |
| Weight with display | 100 g |
| Weight without display | 90 g |
| Connection pipe diameter | 6.2 mm |
It measures pressures from 0 to 50 mbar.
The dynamic response time is less than 10 ms.
It operates from 13.5 to 33 VDC or 24 VAC with a ±15 % tolerance.
With the cover installed, the unit meets IP54.