Which sensor is good

HMP155Air temperature and humidity sensor

HMP155 from Finnish VAISALA companyAir temperature and humidity sensorOne of the commonly used sensors in meteorological service stations. Sensors have a wide range of application environments, with advantages such as high accuracy in high humidity environments, good long-term stability, and are not affected by environmental factors such as dust and chemical gases. Outdoor use requires the installation of a radiation cover to prevent solar radiation or rainwater from affecting the measurement.

Main parameters:
Temperature section
Sensor type: Pt100 RTD;
Measurement range: -80~60 ℃;
Accuracy (at 20 ℃): ± 0.17 ℃ (when using voltage signal output), 0.12 ℃ (when using RS-485 signal output).
Humidity section
Measurement range: 0~99.9%(No water vapor condensation);
Accuracy (15-25 ℃): ± 1% (0-90% RH), ± 1.7% (90-99.9% RH).
whole
Working temperature: -80~60 ℃;
Working voltage: 7-28VDC;
Output signal: Voltage (0-1V, 0-5V, 0-10V), RS-485, Pt100 (4-wire connection);
Shell: polycarbonate;
Shell protection level: IP66.

Beijing Yugen Technology Co., Ltd., founded in 2008, is headquartered in Yongfeng, Zhongguancun, BeijingThe industrial base is a professional manufacturer of meteorological environment and plant physiological and ecological instruments, as well as an agent and service provider for foreign products in China. Mainly serving numerous scientific research and application fields such as meteorology, agriculture, forestry, hydrology, and military.
The company is backed by the Meteorological Instrument Laboratory of the Department of Applied Meteorology at China Agricultural University, and has gathered a group of experts in disciplines such as plants, soil, and meteorology. Formed a high-quality research team with young and middle-aged technical elites as the backbone, and accumulated rich product design experience and profound theoretical knowledge through long-term teaching, research, and product development practice.
Since its establishment, the company has steadfastly focused on technological innovation, devoted itself to product technology research and development, and emphasized product quality and honest service. We have developed RR1000/2000 series data collectors with independent intellectual property rights, as well as monitoring systems for agricultural meteorology, TDP tree sap flow, transposed Bowen ratio, plant population photosynthesis, multi-channel soil respiration, etc. We obtained ISO9001 quality system certification in 2012. At the same time, the company has become the agent and technical service center in Chinese Mainland of Germany Scintec, the United States Campbell, Germany PRG, the United States Hydroinnova, and the United States AVALON. The BLS series large aperture scintillator and regional soil moisture/snow depth monitoring system sold by the company are getting more and more attention from relevant scientists.
The company's business philosophy is to help customers solve problems and accomplish great things with limited funds. Our advantage and feature is having a dedicated technical research and development department, which can scientifically and rigorously consider our clients and assist them in developing procurement plans for scientific research and teaching needs; Specially configure and develop special instruments and equipment required for professional research for clients; Being able to discuss and design research plans with clients, analyze research data, and perform instrument and equipment calibration work. More importantly, we will provide products at affordable prices.
Based on innovation, focusing on quality, providing honest services, sincere cooperation, and common development are the consistent pursuits of Yugen Company. Providing customers with high-quality, safe, reliable, and cost-effective technology and products is the consistent policy of Yugen Company. We will constantly surpass ourselves and are determined to create our own national brand. As always, we will create value for you and provide better technology, products, and services.