This article gives information about Shanghai Feilong Meters & Electronics Co, Ltd. It is a provincial highly developed venture, and a manufacture base of temperature sensors and temperature control instruments.

Our Temperature Controller Shanghai accepts a temperature sensor such as a thermocouple or RTD as input for rightly control process temperature without general operator involvement. It compares the actual temperature to the desired control temperature, or set point, and gives an output to a control part.

• The temperature controller is a device used to control temperature while, a temperature sensor is a device that detects and measures hotness and coolness and coverts it into an electrical signal. The temperature controller takes an input from a temperature sensor and has an output that is connected to a control element such as a heater or fan.
• The Thermocouple is a thermoelectric device for measuring temperature, consisting of two wires of different metals connected at two points, a voltage being developed between the two junctions in proportion to the temperature difference.

Resistance thermometers, also called resistance temperature detectors (RTDs), are sensors used to measure temperature by correlating the resistance of the RTD element with temperature. Most RTD elements consist of a length of fine coiled wire wrapped around a ceramic or glass core. The element is usually quite fragile, so it is often placed inside a sheathed probe to protect it.

The RTD element is made from a pure material, typically platinum, nickel or copper. The material has a predictable change in resistance as the temperature changes and it is this predictable change that is used to determine temperature. They are slowly replacing the use of PR Thermocouple in many industrial applications below 600 °C, due to higher accuracy and repeatability.

Today, we have industrial Thermocouples for exacting conditions, such as solutions of liquid steel, copper water, aluminum water, and zinc water, as well as salt furnace; the thermocouples applied under special environment as cement plant and power plant, which have high accuracy and long service life; new type anti-oxidation tungsten-rhenium thermocouple with low cost and high temperature measurement, which is the ideal product displacing platinum-rhodium thermocouple, some products have reached military level. New products of wireless temperature control and measurement solved the problem for the places where are not convenient for wiring.

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