ifm PN7094 Pressure Sensor, -1 to 10 bar, IO-Link

ifm PN7094 Pressure Sensor, -1 to 10 bar, IO-Link

The ifm PN7094 is a pressure sensor with a four-digit display for compound ranges that cross zero: it measures from -1 bar (vacuum) up to 10 bar, which makes it a natural fit for suction lines, vacuum-assisted handling and low-pressure pneumatic or hydraulic circuits. It has two switching outputs, one of which can run in IO-Link mode, and a red/green display that changes colour to show whether the reading is inside the acceptable window. The process connection is a G 1/4 internal thread, and the process connection can be rotated for the best display orientation after installation.

Seven Star LLC supplies the PN7094 in Oman and the GCC as an independent supplier in Muscat. The type designation shown by the manufacturer for this article is PN-010-RER14-QFRKG/US/V, and the article number PN7094 is what you quote when ordering.

PN7094 technical specifications

The table lists the values published by the manufacturer for the PN7094. Where a parameter has several operating modes, the headline value is shown; the full parameter list is in the manufacturer documentation.

How the PN7094 works

Inside the PN7094 a ceramic-capacitive measuring cell converts process pressure into a small change in capacitance. The electronics linearise that signal, compensate for temperature and compare the result with the switch points you have stored. The red/green four-digit display shows the live value in the unit you select, while two yellow LEDs mirror the state of the two outputs. Because the cell is ceramic and the wetted parts are limited to stainless steel, ceramic and FKM, the same sensor handles liquids and gases without an isolating diaphragm. One output can run in IO-Link mode, which lets a controller read the pressure as process data and push parameters back to the sensor after a replacement.

Where the PN7094 fits and related parts

The PN7094 belongs to the PN70 series of pressure sensors with display. Within that series, the PN7092 covers 0 to 100 bar with a 300 bar pressure rating for hydraulic duty, and the PN7097 covers 0 to 1 bar for very low pressure. The PN7094 sits in the middle and is the one to pick when vacuum must be seen on the same device as positive pressure. It can be connected directly to a PLC input as a switch, or to an IO-Link master port such as the master interfaces in the AL series for continuous pressure data.

Selection and ordering checklist for the PN7094

Work through the points below before you confirm the order, so that the PN7094 you receive is the one your machine or plant needs.

• Check that the real pressure never exceeds the 75 bar pressure rating, and that spikes stay below it; the burst pressure is 150 bar
• Confirm that vacuum down to -1 bar is part of the duty; if only positive pressure is used, consider a unipolar range
• Match the G 1/4 internal thread to a fitting with a suitable seal, and check the tightening torque window
• Verify that media are compatible with stainless steel 316L, ceramic and FKM
• Decide whether you need IO-Link or only the switching outputs

The manufacturer lists this article under the type designation Pressure sensor with display, PN-010-RER14-QFRKG/US/ /V. The article number PN7094 is the reference to quote when ordering, and the type designation is useful for technicians who compare the label on an installed unit.

Installation, commissioning and maintenance

Fit the sensor with a suitable sealing washer or O-ring for the thread form and tighten within the torque window printed in the table; over-tightening a ceramic cell is a common cause of zero shift. Mount it so that the connector points downward or sideways, which keeps condensation from running into the M12 interface, and rotate the process connection to align the display before final tightening. During commissioning set the unit, then the switch points and hysteresis or window, and decide whether each output is normally open or normally closed. Check that the supply stays inside 18 to 30 V DC under load. For maintenance, a periodic zero check against atmosphere on a vented line and a look at the connector for moisture are normally enough. In pulsating systems such as piston pumps, a restrictor or damper protects the cell and steadies the reading.

On vacuum duty the sensor should be mounted so that condensate can drain away from the port, and the fitting should be leak-free, because even a small leak shows as a drifting vacuum value. The pressure-cycle rating of 100 million cycles is a design figure and suits frequently cycling circuits.

Typical applications in Oman and the GCC

In oil and gas and petrochemical plants the PN7094 is used for instrument-air headers, vacuum pump suction monitoring and lubrication circuits on skids. Power stations use it for seal-air and control-air supply, and desalination plants use it on vacuum and low-pressure sections of dosing and filtration skids. The wetted parts are stainless steel, ceramic and FKM, which copes with the humid and salty air common on the Gulf coast, and the IP65/IP67 rating helps against dust and wash-down in outdoor equipment.

Pressure instruments in the Gulf face heat on sun-exposed skids, fine dust and salty humidity. Stainless steel wetted parts, a sealed M12 connection and a conservative pressure margin are the three things that decide service life. Mount the sensor out of direct sun where possible and keep the connector pointing down.

PN7094 compared with related ifm types

The table places the PN7094 next to neighbouring types in the same application group, so you can see whether a sibling would suit the job better.

Information to send with an RFQ for the PN7094

To prepare an accurate offer for the PN7094, please include the following with your enquiry:

• Required pressure range and whether the process is gauge, vacuum or compound
• Medium, temperature range and any pulsation or pressure spikes
• Process thread and the sealing material you need
• Connector or cordset requirements and the cable length
• Quantity, delivery location and whether IO-Link master ports are available

Documents and quotation

No datasheet is attached to this page. Send us the part number PN7094 and we will confirm which documents are available, such as the datasheet and operating instructions, and for IO-Link devices the device description file.

Seven Star LLC is an independent supplier in Muscat serving Oman and the GCC and is not affiliated with the manufacturer; the name ifm is used only to identify the product. Prices are not shown on the page, so send the part number, the quantity and the delivery location to receive a quotation.