Temperature sensor for remote measurement. GSM indoor air temperature sensor: rating of the best options

Temperature sensors are used as part of security alarms or systems like " Smart House". Their main function is to control the temperature in the room. You should buy a GSM temperature sensor when there is a need to collect information and send it to a central alarm device. In Smart Home systems, the device allows you to find out information about the indoor climate, which affects the automatic turning on or off electrical appliances. GSM control of the room, an integral part of which is an alarm with temperature sensors, allows you to save the owner’s time and money as efficiently as possible. It is enough to purchase and install a SIM card, and connect the sensor to an electrical outlet.

What are GSM thermometers for?

• For remote control all types heating devices(electric, gas or solid fuel boilers);
• To control heaters (air conditioning, infrared heaters, heated floors and others);
• To collect information about air temperature and humidity.

If you believe the reviews of experts about GSM thermometers and alarms with temperature sensors, then we can conclude that temperature control and regulation systems are the most modern methods room climate control. This is not only heating or air conditioning, but also the ability to filter air and humidify it.

Why is it worth buying a GSM thermometer and alarm system with temperature sensors?

• Possibility to obtain all information about temperature conditions at any time. Most models can be controlled via Android/iOS applications, which makes it possible to collect data in real time and use it;
• The device can perform dozens of tasks in automatic or semi-automatic modes, relieving the user of the need to manually control temperature and climate variables;
• The price of a GSM temperature sensor seems very low if you take everything into account possible ways saving electricity, water, gas, which are achieved by using the device;
• If the temperature reaches a critical point (which you set yourself), the sensor will notify you by sending an SMS message. In addition, the device can be configured and controlled using SMS commands.

Indoor air is classified as electronic measuring devices, automating the process of monitoring and managing the temperature regime of premises.

They are included in the structure of the heating system of a house, bathhouse, garage, swimming pool, warehouse or air conditioning system.

Their presence will allow you to remotely control the temperature of the internal environment and, if necessary, regulate it.

What are GSM thermometers used for?

GSM temperature sensor is a measuring device that supports notification of the current temperature and control of executive systems.

A thermometer with a GSM transmitter will inform the owner about the temperature conditions at the facility.

Based on these data, a decision will be made to increase/decrease the supply of coolant to the house. For example, using GSM thermometers Warm house 11, you can remotely set the optimal temperature in your home.

In addition, devices of this kind can be included in systems fire safety. If the temperature goes beyond the maximum permissible limit, the sensor will send a warning message to cellular telephone owner, and will also activate the alarm, turn off the heating, activate the fire extinguishing system, or perform another action for which it was programmed during the setup process.

How does a GSM sensor work?

GSM temperature sensors have two modules - a measuring sensor and a transmitting GSM module.

The work of this kind of electronic thermometers is that they measure the temperature and compare it with the limit value (minimum or maximum) that was set in the settings.

If a deviation from the permissible value occurs, a message will be transmitted via GSM communication or a signal will be generated to the actuator.

The alarm signal is transmitted over a cellular communication channel, depending on the specific settings.

This procedure is implemented:

1. when leaving the established range;
2. in case of a sharp increase in temperature, which is typical for a fire;
3. periodically, with a customizable interval;
4. upon request from a telephone number linked to the GSM sensor.

Depending on the design solution, electronic thermometers can monitor parameters in one zone, as the GSM thermometer Warm House 11 does, or in different areas. This function is available in the GSM thermometer Warm House 22, which has two sensors with independently configurable channels.

Rating of the most popular GSM temperature sensors

Below is information about the five most used electronic sensors with a built-in GSM module.

GSM sensor Polyus Thermo

The device is Digital Thermometer, which measures the temperature in the room and compares it with the programmed upper and lower thresholds.

When one of the specified values ​​is reached, an alarm signal is sent to the owner’s phone number. In total, you can link up to 6 numbers to which alarm SMS and calls will be sent.

The GSM temperature sensor has a built-in sensor that can operate in the range of 0…+50ºС. For measurements in a wider range, an external temperature sensor with a measuring interval of -40ºС…+99ºС is connected.

To transmit messages and calls, a GSM module is used that supports GSM-800/900/1800/1900 standards. The alarm transmission time ranges from 20 to 40 seconds.

Alonio T2 GSM is used to control the air temperature in the house and the availability of electricity in the network that powers the equipment of boiler rooms and air conditioning systems.

If it drops below the set threshold, it may have broken heating system, about which a message will be sent to the owner’s cell phone.

An increase in temperature will indicate overheating and possible malfunctions of the air conditioning system, which will also be reported.

An external measuring temperature sensor can be connected to the thermometer, which will allow you to control its value in the range -55ºС…+125ºС.

The built-in transmitter uses the GSM band 0.85, 0.9, 1.8 and 1.9 GHz to send messages. Sending messages about deviations of specified parameters and lack of voltage can be sent to 4 numbers.

This is an electronic meter for remote temperature control, including a GSM module and two sensors - built-in and remote.

The device allows you to continuously monitor the temperature at two points via two independent channels and send warning messages if it goes beyond the established limits.

If necessary, you can find out the current temperature in the house by sending a service SMS to the temperature sensor.

The sensor used is sensitive to the temperature range from -10ºС to +50ºС (internal) and -55ºС…+125ºС (external). The module uses the following cellular communication standards to transmit alarm signals: GSM 2G 0.85, 0.9, 1.80 and 1.90 GHz.

ALFA – TEMPERATURE

This device is used to control temperature regime on objects with an accuracy of ±0.5ºС.

Humidity measurement is also supported, which will allow you to control the basic parameters of the microclimate of the internal environment.

The electronic thermometer is implemented in the form of a controller that has a measuring unit, the signal from which is processed according to a programmed algorithm and, if it goes beyond the limit values, an alarm message is sent to the owner.

Information can be transferred via GPRS or GSM channel to mobile phone, to the cloud, to the server.

This GSM thermal sensor supports measurements in the range from -55ºС to +125ºС. For data transmission, 4 GSM frequencies can be used: 0.85/0.9/1.8 or 1.9 GHz.

Electronic thermometer with built-in battery that monitors temperature external environment and the presence of voltage in the network.

Thanks to the use of an autonomous battery, the device will be able to perform its functions even if the main power supply is turned off.

Battery life is up to 2 days.

If the measured parameters differ from the programmed settings, the device will report this using an alarm message sent by the built-in GSM module. The frequencies used for its operation are 0.85, 0.9, 1.8 and 1.9 GHz. Mailing is possible to 4 linked numbers.

Measurements are carried out by two sensors. The built-in one can operate in the range from -10ºС to +50ºС, and the external one – in the range of values ​​from -55ºС to +125ºС.

Conclusion

The use of GSM temperature sensors simplifies the process of monitoring the indoor microclimate when no one is at home.

Thanks to measuring instruments with a GSM transmitter, you can find out about the discrepancy between the temperature regime and the specified values ​​in any place where there is mobile communications coverage.

The presence of reliable data on the microclimate parameters of the internal environment will allow the user to quickly accept correct solution to eliminate emergency situations and consequences associated with failure heating equipment, air conditioning systems.

Video: Review and demonstration of the Alonio T2 GSM thermometer

Remote temperature sensors are designed to monitor temperature while located at a distance from the controlled objects. The ability to work with remote surfaces provides widespread use of remote temperature sensors.

Types of remote temperature sensors

To solve various problems, stationary and portable remote sensors can be used to determine temperature. Stationary sensors are fixed at a certain point opposite the monitored object. Portable models can be moved depending on the location of the test object, which makes them more widely used.

Remote sensors measure surface temperature using infrared radiation. Based on their operating characteristics, sensors may have various characteristics performance, including temperature limits and response times. Sensors are also made from various materials.

Areas of application for remote temperature sensors

Remote temperature sensors are suitable for use in many industries. The ability to control the temperature of an object without direct contact allows you to replace standard contact sensors in the following areas:

• production of heat and electricity,
• metal mining and processing,
• oil and gas industry,
• production of machine tools, machines and mechanisms,
• production and repair of vehicles,
• construction industry and maintenance of buildings and structures,
• railway industry,
• food industry,
• storage and transportation of various products.

Also, remote sensors can be used in everyday life to control the temperature of residential buildings and premises with the ability to work within a “smart home” type system.

Purpose of remote temperature control sensors

The main purpose of remote sensors is to control the temperature of objects without contact with the surface. In addition, sensors can solve other problems related to temperature measurement:

• temperature measurement up to 3000 o C,
• work in conditions of inaccessibility of objects for contact temperature measurement,
• monitoring the condition of moving elements,
• working with surfaces inaccessible to contact methods of temperature measurement,
• working with live objects,
• measuring the temperature of objects made of materials with low thermal conductivity.

Benefits of choosing a remote temperature sensor

Remote temperature sensors compare favorably with other measurement options due to several advantages:

• remote temperature control of hard-to-reach objects,
• measuring the temperature of materials inaccessible for contact,
• the ability to measure the temperature of dangerous objects or those working in hazardous conditions,
• determination of very high temperatures,
• fast results thanks to short response times,
• increased wear resistance of the sensor due to the lack of contact with the controlled environment,
• ease of operation after initial setup of the equipment.

Limitations in the use of remote temperature sensors

Since remote temperature meters are infrared sensors, the sensor must be configured to work with different types of materials. This is due to the thermal conductivity of each specific type of object. Based on these features, correction factors must be introduced into the work. The accuracy of the sensor results depends on the correct selection of the specific model for the job, as well as a careful approach to setting up the equipment before work.

Operating principle of a remote temperature sensor

To determine the temperature of an object, the sensor measures the level of electromagnetic thermal radiation emanating from the controlled object. Depending on the heating of the object, this radiation can be in the infrared range or in the visible spectrum at very high temperatures. A remote temperature sensor records the radiation level and converts it into an outgoing signal. Measuring temperature by radiation level allows measurements to be taken over a wide range: from -45 o C to +3000 o C.

To ensure high measurement accuracy, it is necessary to select different sensor models for operation in specific conditions, based on the capabilities of the sensor and the characteristics of the controlled object.