Description
IFM PK5523
Technical Specifications: Measured pressure type: Relative pressure Measuring cell: Capacitive ceramic pressure cell Output type: 1 × PNP normally open digital switching output Supply voltage:8 VDC ~ 32 VDC Max output load current:500 mA Switching frequency:100 Hz Media temperature range:-25℃ ~ +80℃ Housing material: PBT, PC Wetted parts material: 316L stainless steel and FKM seal Dimension: Outer diameter 27 mm, total length 71.6 mm Weight:92.5 g Mounting thread: Standard process thread Tightening torque:25 Nm maximum Operating temperature range:-25℃ ~ +80℃ Storage temperature range:-40℃ ~ +100℃ Protection grade:IP67
Functional Features: Ceramic capacitive measuring cell withstands high pressure peak and overload. Integrated digital display shows real-time measured pressure value. On-site adjustment keys set switch point and reset point directly on sensor housing. PNP normally open switching output transmits pressure threshold signal to PLC digital input. Short circuit protection and overload protection built into output circuit. High mechanical shock and vibration resistance for machine installation. Wetted stainless steel material compatible with water, hydraulic oil and compressed air. Long service life with up to 50 million switching cycles.
Application Scenarios: Hydraulic system pressure monitoring, compressed air pipeline pressure control, water pump pressure protection, machine tool fluid pressure detection, refrigeration circuit pressure monitoring, mobile hydraulic equipment pressure alarm, pneumatic system overpressure protection.
Performance Parameters: Fast response time to pressure change in process medium. High repeatability of pressure switch trigger point. Ceramic measuring cell tolerates large pressure surge without permanent damage. IP67 housing prevents dust ingress and water splash damage. Stable switch action over 50 million switching cycles.
Material Composition: Housing: PBT and PC engineering plastic. Wetted metal component: 1.4404 / 316L stainless steel. Sealing ring: FKM fluororubber. Measuring cell: Ceramic capacitive pressure sensing element. Internal PCB: Multi-layer FR4 glass fiber epoxy printed circuit board. Core components: Pressure sensing chip, microcontroller, digital display unit, PNP output driver IC, surge protection components.
Structural Features: Cylindrical compact housing structure. Front side equipped with digital pressure display and two setting buttons. Bottom side process thread for screwing into pipeline or hydraulic manifold. Internal circuit cavity separated from media wetted chamber by ceramic measuring cell. Cable connection port on housing side for power and signal wiring. Sealing FKM gasket between thread and measuring cell housing.
Working Principle: Pressure of liquid or gas medium acts directly on ceramic capacitive measuring cell. Pressure force changes capacitance value of ceramic sensing element. Microcontroller samples capacitance signal and calculates real pressure value, drives digital display to show pressure reading. User sets pressure switch threshold through front keys. When measured pressure exceeds set threshold, microcontroller activates PNP normally open output channel to send switch signal to PLC. If pressure drops below reset threshold, output returns to off state. Built-in protection circuit prevents damage caused by output short circuit and overload.
Installation Requirements: Depressurize pipeline medium before installing PK5523 sensor. Screw sensor into process manifold or pipeline thread with torque not exceeding 25 Nm. Connect 8~32VDC power supply and signal wiring to sensor cable connector. Set pressure switch point and reset point via front panel adjustment keys. Re-pressurize pipeline and verify pressure reading and switch action. Ensure FKM sealing gasket is correctly installed to prevent medium leakage. Route signal cable away from high power motor and frequency converter cables.
Usage Notes: Do not exceed maximum allowable tightening torque during installation to avoid thread and seal damage. Check medium chemical compatibility with 316L stainless steel and FKM seal before application. Do not apply pressure exceeding sensor overload rating to measuring cell. Inspect thread and sealing gasket regularly for medium leakage. Use shielded cable for signal wiring in high electromagnetic interference environment. Do not operate sensor outside rated media temperature range. Avoid strong mechanical impact on sensor housing and measuring cell area.
