Selected Temperature Sensor Pairs

Selected Temperature Sensor Pairs

Selected temperature sensor pairs are used for precise measurement of the supply and return heat carrier temperatures, as well as determining the temperature difference between two control points. Unlike individual sensors, such kits undergo special matching and characteristic verification, which significantly reduces the error when measuring the temperature difference.

Selected pairs are a mandatory element in many heat energy accounting systems where the accuracy of temperature difference measurement directly affects the correctness of heat consumption calculation.

Purpose of Selected Pairs

The main task of a selected pair is to accurately determine the temperature difference between two measurement points.

Key tasks:

• heat energy accounting;
• measuring the supply and return pipeline temperatures;
• temperature difference control;
• connection to heat meters;
• heat exchanger monitoring;
• heating system efficiency monitoring;
• process control;
• improving accuracy of thermal calculations;
• automation of heat engineering systems.

Operating Principle

A selected pair consists of two identical temperature sensors whose characteristics are matched as closely as possible. During production or calibration, each sensor's parameters are checked, and a set is formed with minimal characteristic differences.

Thanks to this, the error in determining the temperature difference is significantly lower than when using two separate sensors without prior matching.

Main Types of Sensitive Elements

The following are commonly used in selected pairs:

• Pt100;
• Pt500;
• Pt1000.

Platinum resistance thermometers provide high measurement accuracy, stable characteristics, and long service life.

Where They Are Used

Selected temperature sensor pairs are widely used in heat engineering accounting and automation systems.

Main application areas:

• heat energy accounting units;
• heat meters;
• individual heat points;
• central heat points;
• boiler rooms;
• heat exchangers;
• heating systems;
• hot water supply systems;
• ventilation units;
• power facilities;
• industrial heat processes.

Selected pairs are especially important in commercial heat accounting, where measurement accuracy impacts financial settlements between suppliers and consumers.

Selected Temperature Sensor Pairs (matched sensor pairs for heat meters, matched pair temperature sensors) for heat meters are designed for precise measurement of the temperature difference of the heat carrier in supply and return pipelines. Based on these data, the heat meter calculates the actual heat energy consumption.

All sensors in the kit undergo factory matching and calibration, ensuring minimal deviations between sensor readings and high heat accounting accuracy. Using selected pairs is a mandatory requirement for most commercial heat energy accounting units and heating cost distribution systems.

This category includes sensor kits of various types and designs compatible with popular heat meter models. Solutions are available for residential, commercial, and industrial facilities that meet current metrological requirements and heat energy accounting standards.

Selected sensor pairs guarantee measurement reliability, correct heat meter operation, and long service life of the heat accounting system.

Design Versions

Selected pairs can be supplied in different designs:

• cable sensors;
• immersion sensors;
• sensors with mounting sleeves;
• sensors for heat meters;
• sensors with fixed cable length;
• sensors with various connection types.

The choice of construction depends on the installation site and specific system requirements.

How to Choose a Selected Sensor Pair

When choosing, consider the following:

• heat meter or calculator type;
• type of sensitive element;
• accuracy class;
• temperature measurement range;
• cable length;
• mounting type;
• protective fitting material;
• mounting sleeve diameter;
• operating pressure;
• operating conditions.

For commercial heat energy accounting, it is recommended to use certified selected pairs that meet regulatory requirements.

Benefits of Use

Selected pairs provide high accuracy in differential temperature measurement and stability of results over a long period.

Main advantages:

• minimal error in measuring temperature difference;
• high accuracy in heat energy accounting;
• stability of characteristics;
• mutual sensor matching;
• compatibility with heat meters;
• reliable operation;
• long service life;
• compliance with heat accounting requirements.

Buy Selected Temperature Sensor Pairs

Our catalog offers selected temperature sensor pairs for heat meters, heat energy accounting systems, heat points, and industrial facilities. Kits based on Pt100, Pt500, and Pt1000 are available in various design forms for precise measurement of temperature differences.

Our specialists will help you select a kit according to the calculator type, installation conditions, and your system requirements.