You can control the operation of heating in one of several ways. For this, different equipment is used, namely:
- automation for timely recharge;
- mixing units;
- security groups.
However, each such variety of devices 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 a heating system.
The purpose of the temperature sensor
Any heating system should operate under human control. The operator should know what is the temperature of the coolant. To determine these indicators, a temperature sensor is required for heating, it will allow you to monitor the expansion of the volume of water. With it, you can monitor the current data, taking appropriate measures if the parameters begin to deviate from the norm.
The temperature sensor has a fairly wide area of use. It allows you to visually view the coolant heating in individual areas where data are recorded on the street and in the premises. Sometimes this device becomes part of a system that guarantees automatic stabilization of parameters.
Varieties of temperature sensors
At the stage of designing a heating system, it is important to choose the right thermal sensor. In this case, the characteristics and varieties of the device are taken into account. They are classified at the installation site, and you can position the device in the system or at a certain distance so that the device has the ability to control other temperature parameters. The latter are used in tandem with room thermostats.
An immersion 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 located outside the system. It can be connected to the programmer or boiler.
Wireless sensors
Recently, wireless models have become the most common, with which you can obtain information through auxiliary electronics. This allows you to mount the device almost anywhere, even outdoors or in a separate room.
Among the main characteristics of such sensors:
- measurement error;
- the presence of batteries;
- signal range.
Wired models
If we are talking about a simple circuit, then you can use a wired sensor. The signal in this case will be transmitted to the control device of the thermometer by wire. The likelihood of errors or incorrect data is much less compared to wireless options. In order to provide better communication between remote thermometers and other equipment, it is recommended to purchase models from the same manufacturer.
Varieties of sensors according to the method of reading
The temperature sensor for heating can be classified by the method of reading, the devices can be:
The first of the above structures suggest the presence of two metal plates and a dial indicator, the plates are made of different metals. One of them deforms when heated, creating pressure on the arrow. This technique is highly accurate, but characterized by a disadvantage expressed in high inertness. The average cost of such sensors is from 600 to 900 r.
About the alcohol variety
Temperature sensors for heating boilers can be alcohol. If we compare them with the above, then in this case the inertia of the display of values is almost absent. In many ways, 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, the marks indicate the value of heating the water. The design is quite simple, but it is not very convenient for monitoring the readings. Pay for an alcohol sensor will have about 1900 p.
Before installing such temperature sensors for heating boilers, you must read the instructions. From it you can find out the mounting dimensions for connecting to the pipe, operating recommendations and temperature limits. When purchasing an immersion sensor, you must also take into account the length of the sleeve, it can vary from 120 to 160 mm.
Preparing to install the sensor: how many devices will be required
The temperature sensor for the heating system will need only one. This is true when it comes to the usual scheme. But if a collector heating circuit is used, then there may be several sensors. Temperature control in this case is individual for each room. Devices from each room will send information to the controller, which, using the control unit, will adjust the flow of coolant to the desired room to maintain the temperature.
Varieties of temperature regulators 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;
- temperature regulator for a radiator;
- local thermostat;
- room thermostat.
The central thermostat, according to consumers, allows you 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 is powered by electricity, but is characterized by autonomy from the boiler. Consumers emphasize that a central thermostat is necessary to adjust the operation of boiler equipment.
Thermostat for a heating boiler is a temperature regulator, which can be indoor or local. Using such devices, according to customers, you can adjust the temperature in each room, creating your own microclimate there. The device should be located next to the boiler, but away from doors and windows so that the temperature readings are not distorted.
The temperature regulator for the radiator, as emphasized by home masters, allows you to control the temperature of each heater separately. The device of such regulators is quite simple. The equipment consists of a valve, which reduces or increases the flow of water. There is also a thermostat in the unit that controls this process.
Reviews of relays with temperature sensor RDD-2X-4R
Relays with a temperature sensor for heating, the model of which was mentioned above, according to customers, is characterized by high load capacity. This allows you to operate the device to control the operation of compressors and other actuators. The use of additional devices is not required.
The equipment has a minimum weight and dimensions, as well as an optimal ratio of quality and price. The maximum pressure is 1.2 MPa. This temperature sensor for shutting down the heating pump has an analogue - DEM 202. As an example, consumers are advised to consider another temperature sensor brand TAM-102C, which is used for on-off temperature control of gaseous and liquid media, as well as for signaling. The scope, according to users, is quite wide, working environments may include:
- oils;
- freons;
- air;
- fresh water.
Other media can be used in conjunction with the device, however, they should not be aggressive to copper alloys, copper, steel and silver solders. Such temperature sensors for heating electric weigh no 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 a temperature sensor to the radiator
The sensor should not be installed on all heating appliances. It is important to follow the rules that state: a temperature sensor is installed on the battery 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 be installed only on one of them, whose power is greater. The first part of the device - the valve - must be installed on the supply pipe, in the place where the radiator is connected to the heating system. If it is necessary to embed it into the assembled system, then the supply line must be dismantled. This can cause some difficulties, especially when connected to steel pipes.
To do this, use a pipe cutting tool. Once the sensor is installed, the thermal head should be mounted without tools. It is important to align the marks on the body and fix the head by gently pressing.
Installing an air temperature sensor
The air temperature sensor for heating must be installed in the living room. If you install in the hall, kitchen or boiler room, this will cause a malfunction of the system. It is recommended to choose the coldest room, it can be angular. There should be no radiators or 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.
The device is connected using the terminals on the boiler or the thermostat cable, which is included in the kit. Connection of additional equipment is carried out based on the rules that you can find in the technical passport. If a warm floor is used as a heating system, then the temperature sensor is sometimes located in the thickness of the concrete screed.
For protection in this case, use a corrugated pipe with a closed end. The pipe bend should be gentle so that if the sensor breaks, it can be removed and replaced with a new one. To begin with, a recess is prepared in the wall for mounting the hinged thermostat. The front panel is removed from the device, and after the device can be installed in the selected location. Next, the heating cable is connected to the contacts, the sensors to the terminals. Observing the packaging, connect the power cable. The front panel is finally installed in place.