The IFM PI2794 is a flush pressure sensor with an integrated 4-digit display designed for hygienic pressure monitoring. It measures -1…10 bar and supports liquids, gases, viscous media, and liquids containing suspended particles. Two digital outputs, a configurable 4…20 mA output, and IO-Link provide flexible automation connectivity. The G1 Aseptoflex Vario process connection and flush-mount construction are suited to food and beverage applications. High temperature, pressure, and ingress protection ratings support demanding process environments.
Explore performance details, construction highlights, applications, and technical information in one clear overview.
The PI2794 is designed for applications where a flush-mounted pressure connection is required. Its measuring range extends from -1 to 10 bar, allowing both vacuum and positive pressure monitoring. The flush design reduces dead space around the pressure connection. The sensor can measure liquids, gases, viscous media, and media containing suspended particles. This makes it particularly useful for process and hygienic equipment.
Two digital outputs provide configurable switching functions. A scalable and invertible 4…20 mA output can transmit pressure values to a PLC or process controller. IO-Link provides digital parameterisation and process communication. Switching points can be configured with fine 0.01 bar increments. This gives users flexibility for both alarm and continuous-monitoring applications.
The PI2794 uses stainless steel 316L, ceramic, PTFE, FKM, and other process-compatible materials. Its wetted surface has a specified Ra <0.4 µm / Rz 4 µm finish. The G1 Aseptoflex Vario connection supports hygienic process integration. IP67, IP68, and IP69K protection provide resistance against water ingress and intensive cleaning. The sensor supports medium temperatures up to 125 °C and short-time exposure to 145 °C.
Flush pressure measurement
4-digit display
-1…10 bar measuring range
Relative pressure and vacuum
Two digital outputs
PNP/NPN
NO/NC configurable
4…20 mA analogue output
IO-Link communication
G1 Aseptoflex Vario connection
316L stainless steel
Ceramic measuring cell
Ra <0.4 µm wetted surface
IP67/IP68/IP69K
High-temperature capability
Food and beverage processing
Hygienic process equipment
Pharmaceutical equipment
Tank pressure monitoring
Pipeline pressure monitoring
Viscous-media processing
Filling systems
Process automation
The Aseptoflex Vario connection allows the sensor to be integrated into suitable hygienic process fittings. The flush design helps minimise dead space at the measuring point. Correct sealing and tightening are essential for maintaining process integrity. The smooth wetted surface supports hygienic installation requirements. Regular inspection should follow the cleaning and maintenance procedures of the process system.
The PI2794 can combine local pressure display with switching and analogue process signals. IO-Link adds digital configuration and diagnostic capabilities. Configurable damping allows the sensor response to be adapted to changing pressure conditions. High pressure resistance provides additional protection against process pressure peaks. These capabilities make it suitable for demanding automated process environments.
| Specification | Details |
|---|---|
| Model | PI2794 |
| Product type | Flush pressure sensor with display |
| Order code | PI-010-REA01-MFRKG/US/ /P |
| Measuring principle | Electronic pressure measurement |
| Measuring range | -1…10 bar |
| Pressure type | Relative pressure / vacuum |
| Medium | Liquids and gases |
| Special media | Viscous media and liquids with suspended particles |
| Process connection | G1 external thread |
| Connection system | Aseptoflex Vario |
| Pressure rating | 50 bar |
| Minimum burst pressure | 150 bar |
| Vacuum resistance | -1000 mbar |
| Medium temperature | -25…125 °C |
| Short-time temperature | 145 °C for 1 h |
| Digital outputs | 2 |
| Analogue outputs | 1 |
| Electrical design | PNP/NPN |
| Switching function | NO/NC programmable |
| Analogue output | 4…20 mA |
| Analogue output type | Scalable / invertible |
| Switching output current | 250 mA |
| Short-circuit protection | Yes, pulsed |
| Overload protection | Yes |
| Operating voltage | 18…32 V DC, 3-wire |
| Current consumption | <45 mA |
| IO-Link | Yes |
| IO-Link transmission | COM2, 38.4 kBaud |
| IO-Link revision | 1.0 |
| Minimum process cycle | 2.3 ms |
| Ambient temperature | -25…80 °C |
| Protection rating | IP67 / IP68 / IP69K |
| Housing material | Stainless steel 316L, FKM, PTFE, PBT, PEI, PFA |
| Wetted material | Ceramic Al₂O₃, stainless steel 316L, PTFE |
| Surface finish | Ra <0.4 µm / Rz 4 µm |
| Dimensions | Ø50 × 105.8 mm |
| Weight | 351.8 g |
| Electrical connection | M12, 4-pin, gold-plated |
| Display | 4-digit alphanumeric |
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