IFM PK5523

Core Technical & Performance Specifications

1. Pressure Measurement Core Parameters
   • Pressure Measurement Type: Relative gauge pressure
   • Standard Measuring Range: 0 bar ~ 25 bar (0 psi ~ 363 psi)
   • Maximum Allowable Continuous Operating Pressure: 60 bar (870 psi)
   • Minimum Burst Destruction Pressure: 500 bar (7253 psi)
   • Switch Point Adjustment Range: Full 0~25 bar measuring range arbitrary continuous adjustment via front setting rings
   • Adjustable Hysteresis Range: 0.5 bar ~ 10 bar continuous adjustable reset hysteresis to avoid frequent switch on-off jitter caused by slight pipeline pressure fluctuation
   • Measurement Accuracy at 25°C Standard Temperature: ±1.5% Full Scale measurement error
   • Long-Term Drift Error Within 12 Months Continuous Operation: Less than ±0.3% Full Scale
2. Electrical Power & Switch Output Parameters
   • Rated Operating DC Supply Voltage: 9.6 VDC ~ 32 VDC wide-range industrial DC power supply
   • Typical Quiescent Current Consumption: Less than 20 mA under rated supply voltage
   • Switch Output Signal Type: Single-channel PNP sourcing normally open (N/O) switching output, 1 Form A contact logic
   • Maximum Single-Channel Switch Output Load Current: 250 mA continuous rated load current
   • Maximum Allowable Switch Output Voltage: Consistent with supply voltage maximum 32 VDC
   • Switch Response Time Delay: Less than 1 ms pressure signal sampling to switch output action delay
3. Medium & Environmental Working Parameters
   • Compatible Measured Medium Types: Non-corrosive industrial liquids (hydraulic oil, lubricating oil, cooling water), dry industrial non-corrosive gases (compressed air, nitrogen, refrigerant freon gas)
   • Allowable Measured Medium Operating Temperature Range: -25°C ~ +80°C
   • Sensor Ambient Housing Operating Temperature Range: -20°C ~ +70°C
   • Storage & Transportation Temperature Range: -40°C ~ +85°C
   • Allowable Relative Humidity: 5% ~ 95% non-condensing
   • Mechanical Shock Resistance Standard: IEC 68-2-27, withstands 50g peak instantaneous mechanical shock with 11 ms pulse width
   • Mechanical Vibration Resistance Standard: IEC 68-2-6, withstands continuous 20g vibration acceleration within 10 Hz ~ 2000 Hz full frequency band
   • IP Environmental Protection Grade: IP67 complete dust tightness and low-pressure splash liquid water resistance
   • MTTF Average Time To Failure Service Life: 771 years under standard rated operating conditions
4. Physical Dimension & Weight Parameters
   • Overall Sensor External Size: Cylindrical outer diameter 27 mm, total overall length 71.6 mm
   • Process Medium Connection Thread Specification: G1/4 external male pipe thread, built-in M5 internal vent hole for relative pressure reference air balance
   • Net Weight of Single Complete Sensor Unit: 92.5 g
5. Electromagnetic Compatibility Certification Standards
   • Industrial Immunity Standard: DIN EN 61000-6-2
   • Emission Interference Standard: DIN EN 61000-6-3
   • Pressure Equipment Directive Compliance: Suitable for Group 2 industrial fluid media, meets pressure equipment good engineering practice standards

     Material Composition

     1. Process Medium Contact Measuring Cell Housing & Thread Fitting: Austenitic stainless steel grade 1.4404 (316L stainless steel), precision CNC machining, passivation anti-corrosion surface treatment, outstanding resistance to hydraulic oil, refrigerant, compressed air and general industrial weak corrosive liquid and gas media
        2. Internal Pressure Sensing Diaphragm: Ultra-thin 316L stainless steel elastic isolation diaphragm, fully welded integrated sealing structure with measuring cell housing. The diaphragm bears all medium pressure and isolates internal electronic circuits from process fluid to prevent liquid infiltration and component corrosion.
        3. Internal Pressure Transduction Chip: Piezoresistive silicon MEMS sensing chip, encapsulated in high-temperature resistant epoxy resin. The chip converts mechanical diaphragm deformation into analog electrical voltage signals for subsequent digital processing.
        4. Main Sensor Outer Housing: Reinforced black glass-fiber filled PBT engineering plastic shell, UL94-V0 flame retardant grade, matte anti-slip surface texture. The plastic shell fully wraps internal circuit assemblies and provides physical protection against dust, splash water and minor mechanical collision.
        5. Front Visual Adjustment Ring Assembly: Two separate transparent polycarbonate rotary setting rings with engraved scale marks, paired with silicone anti-slip sealing gaskets between rings and plastic housing. Polycarbonate material delivers high light transmittance for clear visual reading of pressure threshold values.
        6. Built-in Indicator LED Window: Clear scratch-resistant PMMA acrylic transparent lens, sealed with integrated rubber O-ring to block dust and liquid penetration while maintaining full visibility of LED light status.
        7. Electrical Connection Terminal Components: Nickel-plated copper alloy spring contact pins inside the M12 plug connector, insulated with high-temperature resistant PBT plastic. The internal wiring harness uses cross-linked polyethylene insulated copper wires with anti-oil and anti-abrasion outer sheath.
        8. Internal Circuit Board Substrate: FR-4 flame retardant multi-layer printed circuit board, with full tin plating anti-oxidation treatment. The PCB carries signal amplification circuits, digital comparison logic chips, LED driving circuits and overvoltage protection components.
        9. Sealing Auxiliary Materials: EPDM ethylene propylene rubber O-rings for all assembly split joints. EPDM rubber resists aging, hydraulic oil, refrigerant and temperature fluctuation, maintaining permanent waterproof and dustproof sealing performance.

        Structural Feature

        1. Compact Cylindrical Integrated Modular Layout: The entire sensor adopts a one-piece cylindrical structure with a uniform 27mm outer diameter, convenient for installation into narrow equipment piping spaces. The structure is divided into three independent functional segments from bottom to top: process medium measuring thread segment, internal sensing circuit core segment, front adjustment and electrical connector segment. Each segment is sealed with EPDM O-rings to form a fully isolated independent chamber.
        2. Dual Independent Rotary Visual Setting Rings on Front Panel: Two stacked rotatable polycarbonate rings are embedded on the front end surface. The lower ring adjusts the switch actuation pressure setpoint, the upper ring adjusts pressure hysteresis reset value. Engraved numerical scale lines are printed on each ring, users can directly rotate the rings to align target pressure values without auxiliary configuration tools or software. The silicone anti-slip gaskets provide stable rotational positioning, preventing accidental parameter drift caused by equipment vibration.
        3. Single-Window LED Status Indicator Layout: A single circular PMMA transparent lens is located beside the adjustment rings. The internal two-color LED displays distinct states: constant green light represents normal operating pressure below switch trigger threshold; constant red light indicates medium pressure exceeds set trigger value and the PNP switch output is activated. The LED directly reflects real-time switch working status without external detection instruments.
        4. G1/4 Male Thread Process Connection Structure: The bottom of the sensor is equipped with standard G1/4 external male pipe thread, fully machined from solid 316L stainless steel. A tiny M5 internal balance vent hole is reserved at the thread root to communicate with atmospheric pressure, realizing accurate relative gauge pressure measurement. The thread surface has precision cutting teeth for tight pipe fitting connection, and an embedded EPDM sealing gasket prevents medium leakage at the joint.
        5. Rear M12 Circular Plug Electrical Connection Interface: The top rear of the cylindrical housing integrates a standard 4-pin M12 male circular connector. The connector adopts spring push-in contact design, no screw tightening required for cable wiring, greatly shortening on-site wiring operation time. The M12 connector fully complies with industrial IP67 protection standards after matching with shielded M12 female cable plugs.
        6. Internal Multi-Chamber Isolation Shielding Layout: The interior of the plastic housing is divided into two fully separated sealed chambers by a metal isolation partition: lower medium pressure sensing chamber and upper digital signal processing circuit chamber. The metal partition blocks medium vapor infiltration and eliminates electromagnetic interference between the MEMS sensing chip and digital logic circuits, ensuring stable pressure signal conversion under strong industrial electromagnetic environments.
        7. Passive Anti-Vibration Integrated Structure: All internal electronic components are fixed to the PCB via shock-absorbing silicone adhesive. The PCB is suspended inside the plastic housing with elastic silicone support pads, which absorb mechanical vibration transmitted from equipment pipelines and prevent loose soldering or component damage caused by long-term continuous vibration.