Comprehensive Genuine New Pressure Sensor With Display IFM PN2098 for Industrial Control 

IFM PN2098 Electronic Pressure Sensor – Ultra-Low Pressure Monitoring with High Precision

The IFM PN2098 is an electronic pressure sensor with display, specifically engineered for very low pressure ranges such as air and gas ducts, filtration systems, and level or flow applications that work in the mbar range. With a measuring range from −12.5…250 mbar (−1.25…25 kPa) and excellent overload protection, it gives you stable, repeatable measurements where standard “bar-range” sensors simply have no resolution. 

Designed around IFM’s proven ceramic-capacitive measuring cell and a stainless-steel / ceramic wetted path, the PN2098 offers long-term stability, high overload capability, and robust resistance to shock and vibration.  Add in dual outputs (switching plus analogue), a bright red/green 4-digit display, and IO-Link connectivity, and you get a compact sensor that can serve both as a local indicator and as a fully digital data source for modern control systems. 

Technical Overview of IFM PN2098

Ultra-Low Pressure Measuring Concept

Most pressure transmitters focus on ranges from a few bar up to hundreds of bar. The PN2098 targets the opposite end: very low process pressures, expressed in mbar or inH₂O, where small deviations matter.

The measuring range −12.5…250 mbar makes it ideal for tasks such as:

• Monitoring slight overpressure in clean rooms or ventilation ducts

• Supervising filter differential pressure on dust collectors or HVAC units (with appropriate installation)

• Low-head tank level or flow-related backpressure in open systems

Because it is based on a ceramic-capacitive sensing element, the sensor offers:

• High overload tolerance (rated to 10 000 mbar, burst at 30 000 mbar) 

• Excellent long-term stability and low drift over time

• Very small hysteresis and repeatability errors (typically below ±0.1 % of span) 

This combination ensures that slow drifts or small pressure changes in the duct or vessel can be detected and acted upon reliably.

Display and Local Operation

The PN2098 includes a 4-digit alphanumeric display which alternates between red and green, accompanied by LEDs that indicate the active unit (mbar, kPa, mmWS, inH₂O) and the switching status. 

This design gives technicians clear, on-site visibility:

• Red/green colour change can be used to highlight OK vs alarm states

• Yellow LEDs show when each switching output is active 

• Units are clearly indicated, avoiding confusion during commissioning

Parameter setting is carried out via front-panel buttons. Through a simple menu, you can configure:

• Set point and reset point (hysteresis or window mode) 

• Output behaviour as normally open (NO) or normally closed (NC)

• Analogue start and end points (ASP / AEP) to zoom in on a portion of the range, e.g. 0…50 mbar or 50…200 mbar 

• Damping and delays to filter noise or transient spikes 

The upper housing can rotate by 345°, allowing you to align the display after the sensor is threaded into the process connection, which is very useful in cramped ductwork or panel installations. 

Outputs, IO-Link and Integration

Electrically, the PN2098 is versatile:

• Two fully programmable outputs (OUT1 and OUT2) can operate as switching outputs, or OUT2 can be configured as an analogue output. 

• The analogue channel supports both 4…20 mA and 0…10 V signals, allowing direct wiring to PLC analogue inputs.

• Each digital output can deliver up to 250 mA, with pulsed short-circuit and overload protection, and supports switching frequencies up to 500 Hz. 

On top of this, the device is a full IO-Link sensor:

• IO-Link COM2, revision 1.1, compliant with IEC 61131-9 

• SIO mode for classic switching operation when IO-Link is not used 

• Provides high-resolution process data, device identification, and diagnostic information, with minimum process cycle times around 2.3 ms 

This means the PN2098 can act as a simple switch in legacy installations, or as a smart node in a fully digital, IO-Link-enabled network, without changing the hardware.

Mechanical Design and Durability

The PN2098 is built for long service life in industrial conditions:

• Process connection: G ¼ internal thread to DIN EN ISO 1179-2, a standard fitting for many manifolds and adapters.

• Wetted materials: stainless steel 316L, Al₂O₃ ceramic diaphragm, FKM seals, offering compatibility with typical industrial air and many liquids.

• Housing: 316L stainless steel plus glass-fiber reinforced PBT/PC for shock and vibration resistance.

• Environmental protection: IP65 / IP67 when used with a suitable M12 connector, plus an ambient temperature range of −25…+80 °C. 

• Rated for at least 100 million pressure cycles, with MTTF around 145 years under standard assumptions. 

These characteristics make the sensor suitable for continuous operation on air handling units, filters, turbines, or process skids where access may be infrequent.

Typical Applications for IFM PN2098

Thanks to its very low pressure range, the PN2098 is a strong candidate for:

• HVAC and clean-room systems
  Measuring slight overpressure between rooms, monitoring duct pressure, and providing early warnings for fan or damper faults.

• Filter and dust collection systems
  Monitoring low differential pressures across filters (with appropriate installation arrangements) to optimize filter replacement intervals and reduce energy consumption.

• Ventilation and exhaust ducts
  Ensuring that extraction systems maintain the required negative pressure for safety and emissions control.

• Level or flow-related applications at low head
  In open basins, tanks, or channels where pressure corresponds to a small hydrostatic height, the high resolution of the PN2098 helps detect subtle changes.

• OEM equipment
  As a standard low-pressure sensor in compact air handling units, lab equipment, or test rigs that operate in mbar or inH₂O ranges.

Selection and Installation Notes

When you integrate the PN2098 into your design:

• Check that your normal operating pressure lies within the −12.5…250 mbar range; the sensor is optimized for very low pressures and provides fine resolution in this window.

• Use suitable sealing (thread sealant or appropriate sealing ring) for the G ¼ connection and tighten within the recommended 25…35 Nm torque. 

• Configure analogue start and end points so you use as much of the output span as possible for your most important pressure region; for example, focus on 0…100 mbar if your process normally runs there. 

• For IO-Link environments, store parameter sets centrally so a replacement PN2098 can be configured automatically by the IO-Link master, reducing maintenance time.

Why Choose IFM PN2098?

The IFM PN2098 stands out in applications where small pressure differences make a big difference:

• Very low measuring range tailored to mbar / inH₂O tasks

• High precision and stability due to ceramic-capacitive technology

• Local red/green display and intuitive setup for on-site staff

• Switching outputs, analogue output and IO-Link in a single compact device

• Rugged mechanical design with long life and strong overload protection

For OEMs and plant operators who need reliable, high-resolution monitoring of low pressures in ducts, filters, and process lines, the PN2098 offers a well-balanced combination of performance, robustness and integration flexibility.