SIEMENS QAE2164.015 Immersion Temperature Sensor 1.5m Pipes

The SIEMENS QAE2164.015 immersion temperature sensor, with its 1.5m pipe, offers robust and precise temperature measurement crucial for HVAC and industrial process control systems. This sensor boasts a rapid response time and high accuracy, ensuring optimal system performance and energy efficiency. Key technical parameters include a measuring range of -50…+150 °C, a sensing element of NTC 570 Ohm, and a connection cable length of 1.5 meters. The IP65 protection rating ensures reliable operation even in demanding environments, and its direct immersion design simplifies installation.

Product Specifications

| Parameter             | Value                               |

| :-------------------- | :---------------------------------- |

| Measuring Range       | -50…+150 °C                         |

| Sensing Element       | NTC 570 Ohm                         |

| Cable Length          | 1.5 m                               |

| Protection Rating     | IP65                                |

| Connection            | Screw terminal                      |

| Application           | Pipe, immersion, heating, cooling   |

| Nominal Voltage       | 24 V AC/DC                          |

| Material              | Stainless steel, brass              |

Core Features & Market Positioning

The SIEMENS QAE2164.015 stands out due to its direct immersion design, eliminating the need for a separate immersion sleeve and simplifying installation while ensuring excellent thermal conductivity. Its NTC sensing element provides high sensitivity and accuracy across a broad temperature range, making it a versatile choice for diverse applications. The sensor is engineered for reliability in challenging industrial settings, supported by its IP65 rating, which guarantees protection against dust ingress and water jets. This combination of precision, durability, and ease of integration positions the QAE2164.015 as a cost-effective and high-performance solution for building automation and industrial process monitoring, rivaling more complex or expensive alternatives.

Key Application Scenarios

This immersion temperature sensor is ideally suited for monitoring and controlling temperatures within pipe systems in heating, ventilation, and air conditioning (HVAC) applications. Common use cases include measuring supply and return water temperatures in boiler systems and chilled water loops, ensuring efficient operation and preventing equipment damage. In industrial processes, the SIEMENS QAE2164.015 is employed to monitor fluid temperatures in pipelines, chemical processing, and manufacturing environments where precise temperature control is paramount for product quality and operational safety. Its robust construction and 1.5m cable length facilitate installation in various pipe sizes and configurations, addressing common user needs for versatile temperature sensing.

Practical System Integration Guidance

Integrating the SIEMENS QAE2164.015 into existing control systems is straightforward. The sensor connects via a two-wire system to a compatible controller or building management system (BMS) that provides the necessary excitation voltage (24 V AC/DC). Installation involves screwing the sensor directly into a suitable threaded opening in the pipework, ensuring good thermal contact with the fluid. For optimal performance, it is recommended to install the sensor in a location that represents the average fluid temperature, avoiding dead zones or areas with significant stratification. The 1.5m cable provides ample reach for connecting to control panels, and its screw terminal connection ensures a secure electrical link.

Operation and Risk Mitigation

The SIEMENS QAE2164.015 operates by converting fluid temperature into an electrical resistance value, which is then interpreted by a connected control system. Proper operation relies on maintaining the specified supply voltage and ensuring the sensor is fully immersed in the medium being measured. Risk mitigation primarily involves ensuring correct installation to prevent leaks and electrical hazards. Avoid exposing the sensor to temperatures outside its specified range or to corrosive substances not compatible with stainless steel or brass. Regular visual inspection for physical damage or corrosion is advisable. While the sensor itself has no user-serviceable parts, ensuring the integrity of the connection cable and terminal block is key to preventing operational faults.

Scalability & Long-Term Value

The SIEMENS QAE2164.015 offers significant long-term value due to its compatibility with a wide range of Siemens automation platforms and standard BMS protocols. Its passive NTC sensing technology ensures a long operational lifespan with minimal drift. For facilities looking to enhance their digital capabilities, integrating this sensor into an IIoT infrastructure is seamless. Data from the QAE2164.015 can be fed into advanced analytics platforms for predictive maintenance, energy optimization, and process improvement. While direct upgrade paths for the sensor itself are limited given its robust design, its compatibility with evolving control systems ensures that it remains a valuable component for years to come, supporting both existing infrastructure and future smart building initiatives.

Frequently Asked Questions

What is the typical accuracy of the SIEMENS QAE2164.015 sensor?

The SIEMENS QAE2164.015 utilizes an NTC sensing element known for its high accuracy. This ensures precise temperature readings essential for sensitive control loops. The sensor is designed to provide reliable data within its operating range.

This precision helps in maintaining optimal system efficiency and preventing process deviations. Accurate temperature data is critical for energy savings in HVAC systems.

The inherent characteristics of NTC technology contribute to consistent performance over the sensor's lifecycle. Its accuracy is a key selling point for demanding applications.

How do I connect the SIEMENS QAE2164.015 to my control system?

The sensor uses a simple two-wire connection. Connect the sensor's leads to the appropriate terminals on your controller or BMS. Ensure the controller provides the required 24V AC/DC excitation voltage.

The screw terminal connection on the sensor facilitates a secure and reliable electrical hookup. Double-check wiring polarity if your system requires it.

Proper connection is vital for accurate readings and to avoid potential damage to the sensor or control system. Refer to your controller's manual for specific wiring diagrams.

Can the SIEMENS QAE2164.015 be used for steam applications?

The QAE2164.015 is rated for immersion up to 150 °C, making it suitable for hot water and low-pressure steam. For high-pressure steam, a specialized immersion sleeve or a different sensor type might be necessary.

Always verify the operating temperature and pressure of your specific steam system against the sensor's specifications. Continuous exposure to saturated steam requires careful consideration of material compatibility.

While the sensor can handle the upper end of its temperature range, prolonged exposure to aggressive steam conditions could impact its longevity. Ensure the fluid is compatible with the stainless steel and brass components.