Temperature and humidity sensors equipped with moisture-sensitive and heat-sensitive components, mostly temperature and humidity integrated probe as a temperature measuring element, the temperature and humidity signals collected, after regulator filtering, operational amplification, non-linear correction, V / I conversion, constant current and reverse protection and other circuits, converted to a linear relationship with the temperature and humidity current signal or voltage signal output, but also can be directly through the main control chip for 485 or 232 and other interface output, some with on-site display, some do not have on-site display. Temperature and humidity sensors are widely used in various fields of production and life due to their small size and stable performance.
①Temperature and Humidity Sensor with 485 Output
This type of temperature and humidity sensor circuit adopts microprocessor chip, with moisture-sensitive and thermal components, thus ensuring the reliability, stability and interchangeability of the product. The use of particles sintered probe sheath, probe and shell directly connected, the output signal type RS485, the standard modbus protocol, stable communication distance up to 2000 metres, and the upper computer system for centralized monitoring, simple and convenient installation.
485 output type temperature and humidity sensor can be used in manufacturing, animal husbandry, industry and other fields, with a variety of different shells in order to meet the needs of people using.
②Analog Temperature and Humidity Sensor
This type of temperature and humidity transmitter is the use of digital integrated sensor as a probe, with digital processing circuitry, so that the temperature and relative humidity in the environment into the corresponding standard analogue signals, 4-20mA, 0-5V or 0-10 V. Temperature and humidity integration of analogue-type sensors, it can be converted into a change in temperature and humidity values of current / voltage value changes at the same time, can be directly connected with a variety of standard analogue input secondary instrumentation. It can be directly connected to a variety of standard analogue input secondary instruments.
Analogue type temperature and humidity in reading data need to be connected to the site of the digital display, PLC, frequency converter, industrial control host and other equipment, according to different use scenarios also has a variety of types.
③WIFI Temperature and Humidity Sensor
WIFI wireless data transmission temperature and humidity transmitter, temperature and humidity data can be collected and uploaded to the server through WIFI. Make full use of the established WIFI communication network to achieve data collection and transmission, to achieve the purpose of centralized monitoring of temperature and humidity data. It can greatly reduce the amount of construction, improve the construction efficiency and maintenance costs.
WIFI temperature and humidity sensor has the characteristics of easy installation and fast data transmission, which is suitable for use in places with small measuring range.
④GPRS/4G/NB Temperature and Humidity Sensor
This kind of temperature and humidity sensor belongs to the same network wireless transmission equipment as WIFI type, GPRS/4G can upload the collected temperature and humidity data to the server through the network base station, which solves the difficulty of self-built network on the site. The equipment is easy to install, 4G communication flow is very small, mobile phones can view real-time data at any time; NB type temperature and humidity transmitter adopts NB-IOT wireless communication, full network coverage.
In the field or inconvenient to set up a network site, cold chain transport vehicles, industrial control, machine rooms, cabinets, automation process control, building control, HVAC, electric power, measurement and testing and other industry applications.
⑤LORA Temperature and Humidity Sensor
Adopting LORA wireless communication protocol, the communication not only avoids mutual interference between measurement points during signal transmission, but also avoids the problems of short transmission distance, insufficient penetrability and high power consumption of traditional wireless devices.
In the implementation of the project to avoid a large workload of communication cables, pipelines, power supply line laying, the user can also be based on the actual use of the site, easy to adjust the installation location.
