The Omron E52-P20C is a general-purpose platinum resistance thermometer (RTD) temperature sensor from the E52 series, featuring a Pt100 element with JIS Class B accuracy and 3-wire connection for lead wire resistance compensation. The probe has a 20cm sheath length encased in SUS304 stainless steel for corrosion resistance, with a terminal box housing (C-type) providing G1/2" conduit entry for industrial wiring. It is compatible with Omron E5CS, E5CC, E5AC, and E5CN series temperature controllers. Typical applications include HVAC chiller and boiler temperature monitoring, industrial oven and furnace temperature control, injection molding machine barrel temperature sensing, food processing batch temperature monitoring, packaging machine heater control, and general industrial process temperature measurement.
**Q: What does E52-P20C model code mean?**
A: E52 = Temperature sensor series, P = Platinum RTD (Pt100), 20 = 20cm probe length, C = Terminal box type connection.
**Q: What controllers is the E52-P20C compatible with?**
A: It is directly compatible with all Omron E5[] series temperature controllers including E5CC, E5AC, E5CN, and E5CS. The 3-wire Pt100 connection is standard across all these controllers.
**Q: What is the difference between thermocouple and RTD sensors?**
A: RTDs (like E52-P20C with Pt100) offer higher accuracy and stability at lower temperatures (-50°C to 250°C), while thermocouples (E52-CA/IC series) cover wider temperature ranges (up to 1000°C+) but with lower accuracy. Choose RTD for precision, thermocouple for extreme temperatures.
**Q: Why use 3-wire connection instead of 2-wire?**
A: 3-wire connection compensates for lead wire resistance, which can cause measurement errors in 2-wire configurations, especially with long cable runs. The third wire allows the controller to cancel out the wire resistance, providing more accurate temperature readings.
