ifm PX3224 Pressure Transmitter, 0-100 psi, 1/4 NPT

ifm PX3224 Pressure Transmitter, 0-100 psi, 1/4 NPT

The ifm PX3224 is a pressure transmitter with a ceramic measuring cell for 0 to 100 psi (0 to 700 kPa) and a 4 to 20 mA output. The process connection is a 1/4 inch NPT external thread with an additional M5 internal thread, the format used on North American and many imported skid-mounted packages. The ceramic cell has a pressure rating of 7.5 MPa (1087 psi) and a burst pressure of at least 15 MPa, which gives it a good overload margin.

Gold-plated contacts in the four-pole M12 connector help with reliability in humid conditions. Seven Star LLC supplies the PX3224 in Oman and the GCC as an independent supplier.

PX3224 technical specifications

The table lists the values published by the manufacturer for the PX3224. Where a parameter has several operating modes, the headline value is shown; the full parameter list is in the manufacturer documentation.

How the PX3224 works

The PX3224 turns process pressure into a standard 4 to 20 mA loop signal. The measuring element deflects with pressure, the on-board electronics correct for non-linearity and temperature, and the output current rises in proportion to the applied pressure across the span. A two-wire style current loop is immune to voltage drop along the cable, so the controller sees the same value at the end of a long run as at the sensor. There is no display and no menu, so commissioning is mostly a matter of wiring, scaling the analogue input in the PLC and verifying the zero point with the line open to atmosphere.

Where the PX3224 fits and related parts

The PX3224 sits at the low end of the transmitter range compared with the PT5400 (0 to 400 bar, G 1/4). Choose it when the equipment you are repairing or extending uses 1/4 inch NPT ports and psi scaling. For a display and switching points rather than a signal only, the PN70 series is the alternative.

Selection and ordering checklist for the PX3224

Work through the points below before you confirm the order, so that the PX3224 you receive is the one your machine or plant needs.

• Check the range in psi: 0 to 100 psi relative pressure
• Check the NPT thread (1/4 inch external) and use a thread sealant suitable for the media
• Check supply: 9.6 to 32 V DC with the load limited by the (Ub minus 9.6 V) divided by 20 mA relationship, 720 ohms at 24 V
• Check media against stainless steel 303, ceramic and FKM wetted materials
• Decide on cordset and connector wiring

The manufacturer lists this article under the type designation pressure transmitter with ceramic measuring cell, PA-010PRBN14-A-ZVG/US/ /V. The article number PX3224 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

Mount the transmitter in a position where the pressure port drains and no trapped air or condensate can sit on the measuring element. Use the sealing method that matches the thread type, observe the tightening torque, and avoid strain on the connector. When commissioning, power up, confirm that the output reads close to 4 mA at zero gauge pressure, then scale the PLC input to the span of the sensor. A periodic zero check and a visual look at the cable and connector are sufficient maintenance. In systems with hydraulic shock or pulsation consider a restrictor in the port, which protects the element and calms the signal.

With tapered NPT threads, do not tighten by torque alone: seal with a compatible thread sealant and hand-tighten plus the number of turns suited to the fitting. This transmitter is rated IP65, so protect the connector from heavy washdown in the installation. A restrictor can be retrofitted for pulsating air supply.

Typical applications in Oman and the GCC

Typical uses are compressed-air and instrument-air headers, pneumatic control panels, packaged compressors and refrigeration or cooling skids. In Oman and the GCC it replaces transmitters on imported packages with NPT ports in utilities, water treatment and workshop air systems.

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.

PX3224 compared with related ifm types

The table places the PX3224 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 PX3224

To prepare an accurate offer for the PX3224, please include the following with your enquiry:

• Pressure span and type (gauge or vacuum)
• Medium and temperature, including cleaning or washdown conditions
• Process thread type and sealing material
• Output and wiring requirement, including cordset length
• Quantity and delivery location

Documents and quotation

No datasheet is attached to this page. Send us the part number PX3224 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.