Wireless temperature sensors are widely used in chemical industry, metallurgy, oil, electricity, water treatment, pharmaceutical, food and other automation industries. For example: the temperature high voltage cable acquisition; temperature underwater harsh environment of acquisition; the temperature of moving objects on the acquisition; easy connection space transmission sensor data; and reduce cabling costs alone for the choice of data collection programs; no AC power data measuring workplace; portable non-fixed location data measurements. To carry out the principle of selection - a specific survey work, we must first consider what kind of principle of the sensor temperature sensor, which after a number of factors need to be analyzed can be determined. Because, even measuring the same physical, there are a variety of sensor types are available Principle Hall sensor, which is more appropriate sensor principle, we need to consider the following specific issues to be measured according to the conditions of use features and sensors: Range size; the measured position of the sensor volume requirements; measurement of the contact or non-contact; signal extraction methods, cable or non-contact measurement; source sensor characteristics of the sensor, domestic or imported, the price can not stand, or own developed after consideration of the above problems can determine what type of sensor choice, and then consider the specific performance of the sensor. Sensors | Xinfeng (certified) | Luohe sensor provided by the Xinxiang City, Xinfeng Sensing Technology Co., Ltd. purification. Xinxiang City, Xinfeng purification Sensing Technology Co., Ltd. (www.xfcgq.com) (www.xfcgjh.com) is a leader in Xinxiang, sensors, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In Xinfeng leadership with the staff warmly welcome all inquiries negotiations to create a better future Xinfeng.