Siemens QAE2164.015 Immersion Temperature Sensor – 0–10 V DC Output, 150 mm Probe, −10 to +120°C

General
The Siemens QAE2164.015 is an active immersion temperature sensor designed to measure water temperature in pipes and tanks in heating, ventilation and air-conditioning (HVAC) systems. It is suitable for controlling or limiting flow temperature, limiting return temperature and monitoring domestic hot water (DHW) temperature.

The sensor provides a 0–10 V DC output signal for integration with compatible HVAC controllers and building management systems. It features a 150 mm stainless-steel immersion probe and is supplied with a clamp for installation in a compatible protection pocket.

Features
- Active immersion temperature sensor for liquid temperature measurement.
- 0–10 V DC output signal.
- 150 mm immersion probe.
- Measuring range up to 120°C.
- Stainless-steel immersion rod.
- 24 V AC or 13.5–35 V DC power supply.
- Supplied with clamp for protection pocket.
- Suitable for flow, return and domestic hot water temperature monitoring.
- Designed for HVAC and building automation applications.

Key Specifications
- Brand: Siemens
- Model: QAE2164.015
- Manufacturer Part Number: BPZ:QAE2164.015
- Product Series: Symaro
- Product Type: Active immersion temperature sensor
- Temperature Measuring Range: −10 to +120°C (factory setting)
- Temperature Output: 0–10 V DC
- Sensing Element: Pt1000, Class B (DIN EN 60751)
- Immersion Length: 150 mm
- Operating Voltage: 24 V AC ±20% or 13.5–35 V DC
- Measuring Accuracy: ±1 K (0–70°C); ±1.4 K (−10 to +120°C)
- Time Constant: Approximately 30 seconds with protection pocket; 8 seconds without pocket (at 2 m/s)
- Protection Rating: IP54
- Protection Class: Class III
- Immersion Rod Material: Stainless steel 1.4571
- Housing Material: Polycarbonate
- Cable Entry: M16 × 1.5
- Installation: Immersion mounting with compatible protection pocket