Overview
The Elreha TF 501 PT1000 immersion sensor is a high-quality resistance temperature detector (RTD) engineered for accurate, stable temperature measurement across a wide range of industrial applications. The ELREHA SENSOR TF501 is a high-quality PT1000 sensor made of PVC-S, which has been designed for use in various applications in the field of cooling, air conditioning and ventilation technology as well as heat pumps. With a temperature resistance of -25 to 80°C and a length of 3 metres, this sensor is ideal for use in free air, freezers and evaporator packs.
Key Features
- High quality, precise measurement accuracy and reliable performance
- Robust PVC-S design ensures long service life and reliable function in various environments
- 3-meter cable length for flexible installation in confined spaces
- DIN EN ISO 9001:2015 certified manufacturing for quality assurance
- Compatible with standard PT1000 signal conditioning and control systems
- Proven design suitable for both HVAC and refrigeration controls
Technical Specifications
- Sensor Type: PT1000 (Platinum Resistance Thermometer)
- Operating Temperature Range: -25 to +80°C
- Cable Length: 3 meters
- Housing Material: PVC-S (flame-retardant, oil-resistant)
- Resistance @ 0°C: 1000 Ohms
- Connection: Cable termination, screw-terminal compatible
- Certification: DIN EN ISO 9001:2015
- Manufacturer: ELREHA (Germany)
Typical Applications
- Cold storage and freezer temperature monitoring
- HVAC system evaporator and air temperature sensing
- Heat pump thermostat control and safety limits
- Refrigeration unit evaporator coil protection
- Process temperature measurement in condensing and expansion circuits
Compatibility & Replacements
Compatible With
- ELREHA TAR cold storage controllers (TAR 3810, TAR 5810 series)
- Any PT1000-compatible industrial temperature controller
- Standard RTD signal conditioning modules and transmitters
- Cooling and refrigeration management systems utilizing Pt1000 input
- HVAC control panels with PT1000 sensor input
Replaces / Drop-In Replacement For
The Elreha TF 501 is a standard PT1000 immersion sensor. It is compatible with other manufacturers’ PT1000 sensors of equivalent temperature range and cable length. Always verify connector type and cable length before replacing an existing sensor.
Works With
- PT1000 RTD transmitters and converters
- Industrial PLC temperature input modules
- Analog temperature controllers with PT1000 input
- HVAC building management systems (BMS) supporting PT1000
- Distributed control systems (DCS) with RTD signal conditioning




















