Product Overview

The Ingersoll Rand Temperature Sensor (Part Numbers: 39921713 and 39921705) is a precision thermal monitoring component designed for Ingersoll Rand rotary screw air compressors. Installed near the air end discharge, oil separator, or air inlet, it provides continuous real-time temperature feedback to the compressor's Intellisys / Xe-Series controller.

Built to meet strict OEM specifications, these sensors deliver rapid response times and accurate resistance readings, protecting the air end against high-temperature overloads, preventing emergency shutdowns, and maintaining system thermal balance.

Key Features & Benefits

• High Thermal Precision: Advanced RTD / thermistor sensing element ensures exact temperature monitoring with fast millisecond-level response times.

• 100% Direct OEM Replacement: Factory-standard thread sizing and plug-and-play wiring connectors ensure easy, hassle-free installation.

• Heavy-Duty Industrial Housing: Stainless steel / brass body designed to resist high temperature, oil exposure, and severe machine vibration.

• System Overheat Protection: Prevents costly air end lockups and lubricant thermal degradation by delivering accurate signal feedback to the controller.

Technical Specifications

Common Symptoms (When to Replace?)

• Erratic Temp Readings on Controller: Displaying fluctuating, negative, or extreme max values (e.g., 999°C / -40°C).

• False High-Temperature Trips: Air compressor continuously shuts down on emergency high discharge temperature (HDT) errors.

• Physical Damage or Corrosion: Cracked probe casing, damaged wiring harness, or oil leakage around thread sealing points.