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How to choose temperature and humidity sensor in concrete curing?

by:Rika Sensors     2021-09-25
How to choose temperature and humidity sensor in concrete curing?
The society of the 21st century is moving in the direction of diversification, and all directions of society are constantly being constructed and developed. The city is changing with each passing day, and high-rise buildings are rising from the ground. The role of concrete in my country's engineering construction is becoming more and more important.

Concrete, abbreviated as 'concrete (tóng), Low price, simple production process, are widely used in various fields.

Although concrete is simple and convenient to make and use, there are still many problems, such as concrete strength, cracks, and durability after hardening. These quality problems are related to the maintenance of concrete. The purpose of curing is to ensure that the concrete has enough humidity and suitable temperature for hydration within a certain period of time, accelerate the hardening of the concrete and increase the strength of the concrete. In addition, it can also prevent the concrete from being exposed to the sun, wind, and cold after it is formed. Under conditions, abnormal shrinkage, cracks and other phenomena will increase the density of concrete, so as to increase the strength and reduce the effect of cracks.

Its importance is also emphasized in the 'National Standard GB/T50081-2019 'Standard for Testing Methods of Concrete Physical and Mechanical Properties'. The new standard puts forward higher requirements for the temperature and humidity of the standard curing room in the original standard. From the original standard curing room with a temperature of 20±3°C and a humidity of 95% or more, it was revised to a temperature of 20±2°C consistent with the ISO test method.

According to the above requirements for concrete curing temperature and humidity, the RS-WS-N01-F concrete curing temperature and humidity sensor was introduced. This sensor is a temperature and humidity detection equipment developed by our company for the high humidity environment required by the concrete curing industry. It can be used in a standard concrete curing room with a relative humidity of 95%RH for a long time. Its working principle adopts the principle of dry and wet bulb, and the humidity value is calculated by measuring the temperature of the dry bulb and the wet bulb. The circuit uses imported industrial-grade microprocessor chips, imported high-precision thermocouples, and low-temperature drift temperature measurement chips to ensure the product's excellent reliability, high precision and interchangeability in low-temperature, high-humidity, and high-temperature and high-humidity environments.

The output signal type of the temperature and humidity sensor for concrete curing is RS485, which can communicate up to 2000 meters, and the standard modbus protocol supports secondary development. It is easy to use and maintain, and meets the requirements of high reliability of equipment for safety monitoring on the maintenance site. The outer shell is made of 304 stainless steel material, which is waterproof, corrosion-resistant, rust-free, and has an exquisite appearance. It can work for a long time in occasions with a humidity above 95% RH to ensure the service life of the sensor.

Compared with other wet and dry bulb monitoring equipment in the market, in actual use, they need to regularly add water to the wet bulb or replace the wet bulb gauze, maintain the wet bulb humidity, and require regular maintenance. The special temperature and humidity sensor for concrete is relatively simple to monitor temperature and humidity, without manual work, and maintenance-free. The collected data can also be uploaded to the environmental monitoring cloud platform through the environmental monitoring host via Ethernet, GPRS/4G, and the data can be viewed on computers, PADs, and mobile phones. At the same time, the upper and lower limits of the data can be set in the background. Once the data exceeds the limit, the connected host will give an alarm, and each platform will also receive an alarm push, which is convenient for managers to monitor the temperature and humidity in time.

If temperature and humidity in concrete curing are a favorable guarantee for the healthy development of concrete hardening, then the concrete curing temperature and humidity sensor is a black technology in the concrete curing industry. Refusal to build the 'tofu dregs' project, start with the correct choice of using concrete curing temperature and humidity sensors.



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