Temperature sensor for heating: types, purpose, installation, feedback

You can monitor the operation of heating in one of several ways. For this, different equipment is used, namely:

• Automation for timely make-up;
• Mixing units;
• Security team.

However, each such version of the instruments has temperature sensors. You can learn about the functional features and types of these devices by reading the information below. It will be especially useful for those who plan to equip the heating system.

The purpose of the temperature sensor

Any heating system must work under human control. The operator should know what the temperature of the coolant is. To determine these indicators, a temperature sensor is required for heating, it will allow monitoring the expansion of the water volume. With it, you can monitor the current data by taking appropriate measures if the parameters deviate from the norm.

The temperature sensor has a fairly wide range of uses. It allows you to visually view the heating of the coolant in separate areas where data are recorded on the street and in the premises. Sometimes this device becomes part of the system, which guarantees automatic stabilization of parameters.

Types of temperature sensors

At the design stage of the heating system, it is important to select the correct heat sensor. This takes into account the characteristics and varieties of the device. They are classified at the installation site, and the device can be placed in the system or at a certain distance, so that the device has the ability to monitor other temperature parameters. The latter are used in tandem with room thermostats.

A submersible temperature sensor for heating is used to determine the temperature of the water in the pipes. The device is installed on one of the sections of the system. A number of models of solid fuel boilers do not have such sensors, so they are installed additionally. The remote temperature sensor for heating must be outside the system. It can be connected to a programmer or a boiler.

Wireless Sensors

Recently, wireless models have become the most common, with the help of which it is possible to obtain information through auxiliary electronics. This allows you to mount the device almost anywhere, even on the street or in a separate room.

Among the main characteristics of such sensors are:

• Measurement error;
• The presence of batteries;
• Range of the signal.

Wired Models

If it is a simple scheme, then you can use a wire sensor. The signal in this case will be transmitted to the control device of the thermometer by wires. Probability of error or incorrect data is much less compared to wireless options. In order to ensure better communication of remote thermometers with the rest of the equipment, it is recommended to purchase models from the same manufacturer.

Types of sensors by the method of reading

The temperature sensor for heating can be classified according to the mode of reading, the instruments can be:

• Bimetallic;
• Alcohol.

The first of these designs assume the presence of two metal plates and a dial gauge, the plates are made of different metals. One of them is deformed when heated, creating pressure on the arrow. This technique is highly accurate, but characterized by a defect, expressed in high inertia. The average cost of such sensors is from 600 to 900 r.

About alcoholic variety

Temperature sensors for heating boilers can be alcoholic. If we compare them with the above, then in this case the inertness of the value mapping is almost absent. In many respects the principle of operation is similar to a traditional thermometer. An alcohol-containing composition is placed in a sealed flask, which expands when heated. On the flask marks indicate the value of water heating. The design is quite simple, but to monitor the readings is not very convenient. Pay for the alcohol sensor will have about 1900 p.

Before installing such temperature sensors for heating boilers, please read the instructions. From it you can find out the mounting dimensions for connection to the nozzle, the operating instructions and the boundary temperature values. Buying a submersible sensor, you must also consider the length of the sleeve, it can vary from 120 to 160 mm.

Preparing to install the sensor: how many devices

The temperature sensor for the heating system will only need one. This is true if we are talking about the usual scheme. But if a collector scheme of heating is used, there may be several sensors. The temperature adjustment in this case is individual for each room. Devices from each room will send information to the controller, which by means of the control unit will adjust the flow of the coolant to the desired room to maintain the temperature.

Varieties of thermoregulators for the boiler and reviews about them

Thermostat for a heating boiler is a temperature regulator, which is divided into several types, among them:

• Central thermostat;
• Thermostat for radiator;
• Local thermostat;
• Room thermostat.

The central thermostat, according to consumers, allows to ensure the safety of the entire boiler room. It is installed together with the boiler, and with the help of wires the device transmits information. It feeds on electricity, but is characterized by autonomy from the boiler. Consumers emphasize that the central thermostat is necessary for correcting the operation of the boiler equipment.

Thermostat for a heating boiler is a temperature controller that can be room or local. With the help of such devices, according to customers, you can adjust the temperature in each room, creating there its own microclimate. The device should be located next to the boiler, but in the distance from the doors and windows, so that the temperature indicators are not distorted.

The thermostat for the radiator, as the home wizard emphasizes, allows you to control the temperature of each heater separately. The arrangement of such regulators is quite simple. The equipment consists of a valve that reduces or increases the flow of water. There is also a thermostat in the unit that controls this process.

Feedback about the relay with the temperature sensor RDD-2X-4R

Relay with a temperature sensor for heating, the model of which was mentioned above, as claimed by customers, is characterized by high load capacity. This allows the device to operate to control the operation of compressors and other actuators. Use of additional devices is not required.

The equipment has a minimum mass and dimensions, as well as an optimum ratio of quality and price. The maximum pressure is 1.2 MPa. This temperature sensor for disconnecting the heating pump has an analog - DEM 202. As an example, consumers are advised to consider another temperature sensor of the TAM-102C brand, which is used for on-off regulation of the temperature of gaseous and liquid media, as well as for signaling. The scope of application, according to users, is quite wide, working environments can come up:

• Oil;
• Chladones;
• air;
• fresh water.

Other media can be used together with the device, however they should not be aggressive to copper alloys, copper, steel and silver solders. Such temperature sensors for heating electric weigh not more than 1.2 kg, their dimensions are 92 x 110 x 62 mm. They can be installed at a distance ranging from 1.5 to 4 m. The ambient temperature can vary from -50 to +60 ° C.

Connecting the temperature sensor to the radiator

The sensor should not be installed on all heating appliances. It is important to follow the rules that read: the temperature sensor on the battery is installed if its total power is 50% or more of all in the room.

Thus, when there are two heaters in the room, the thermostat should only be installed on one of them, whose power is greater. The first part of the device - the valve - must be installed on the supplying supply pipe, in the place where the radiator is connected to the heating system. If it is necessary to cut into the assembled system, the feeder must be removed. This can bring some difficulties, especially when connecting to steel pipes.

To do this, use the pipe cutting tool. Once the sensor is installed, the thermal head should be mounted without tools. It is important to align the tags on the housing and lock the head with a gentle tap.

Installation of a temperature sensor for air

The temperature sensor for heating must be installed in a residential area. If you install in a hall, kitchen or boiler room, this will cause a malfunction of the system. It is recommended to choose the coldest room, it can be a corner room. There should be no radiators and heaters near the appliance. The device should not be exposed to direct sunlight. It can not be called the best place to install a room where drafts are frequent.

Connect the device using the terminals on the boiler or the thermostat cable that is included in the kit. Connection of additional equipment is carried out, proceeding from rules which you can find in the technical passport. If the heating system uses a warm floor, the temperature sensor is sometimes located in the thickness of the concrete screed.

For protection, a corrugated pipe with a closed end is used in this case. The bend of the pipe must be flat so that, if the sensor is damaged, it can be removed and replaced with a new one. To begin with, a groove is prepared in the wall for fastening the hinged thermostat. The front panel is removed from the device, and afterwards the device can be installed in the selected location. Further, the heating cable is connected to the contacts, the sensors to the terminals. When observing the packing, connect the power cable. The front panel is finally in place.