TIANCHANG SHENHUA IMP. & EXP. TRADE CO., LTD.  

Product Name: Fixed Screw-Type Assembly Thermal Resistance Model NO.: WZP Series Type: Resistance Strain Gauge Pressure Sensors Material: Stainless Steel Installation: DIP Resistor Usage: Acceleration Sensor, Thermal Sensor Theory: Magnetic Sensor Component: Mechanical Structure Type for: Diffused Silicon Pressure Transmitter Output Signal Type: Analog Type Production Process: Ceramics Thread Type: NPT Wiring Type: Two-Wire Measuring Medium: Gas IP Rating: IP67 Trademark: SHUA Transport Package: According to Customers' Requirement Specification: ISO Origin: Tianchang City, Anhui Prov, Chn Product Description ApplicationUsually display instruments, recording instruments, computer and other ancillary uses. Direct measurement of the production process in the range of -200 ºC -500 ºC liquid, vapor and gases and solid surface temperatureWorksThermal resistance is the use of material changes in temperature, its resistance changes with the characteristics to measure the temperature, its resistance changes, the working instrument will show the temperature corresponding to the resistance valueTemperature insulation resistanceThermal resistance at ambient temperature 15-35 ºC relative humidity less than 80% of the test voltage for insulation resistance ≥100MΩ 10-100V (DC) between the electrode and the jacketFeature1,Compression spring-type temperature sensing element, seismic performance2,Without compensation wire, cost savings3,High accuracy4,High mechanical strength, good pressure resistance5,imported film resistive element, reliable performance and stabilityThe main technical parametersProduct performance standardsIEC751JB/T8622-1997JB/T8623-1997Thermal resistor is low temperature zone in one of the most commonly used temperature detector.Thermal resistance temperature measurement is based on the metal conductor resistance value increases with the increase of the temperature of the properties for temperature measurement.Its main characteristic is high accuracy, stable performance.The platinum thermal resistance measurement accuracy is the highest, it is not only widely used in industrial temperature measurement, and is made into standard benchmark instrument.Heat resistance is mostly made of pure metal materials, the application at present most is platinum and copper, in addition, now have begun to use the materials such as nickel, manganese and rhodium manufacturing thermal resistance.metal thermal resistance of the commonly used thermal material sort is more, the most commonly used is a platinum wire.Industrial measuring with metal thermal resistance materials in addition to the platinum wire, as well as copper, nickel, iron, iron, nickel, etc.assembly thermal resistanceassembly thermal resistance is by thermal element (resistance), wire, insulation materials, stainless steel casing combination solid body, its diameter is generally from 2 -- 8 mm, minimum of phi mm.Compared with the normal thermal resistance, it has the following advantages:Temperature range and toleranceTypeNo indexingTemperature rangeAccuracy classToleranceWZPPt100-200-500A±(0.15+0.002ItI)B±(0.30+0.005ItI)WZCCu50Cu100-50-100±(0.30+0.005ItI)Temperature measurement principleThermal resistance temperature measurement principle and the temperature measurement principle of the thermocouple, heat resistance, which is based on the heating effect of the resistance temperature measurement, namely the resistance characteristics of the resistance varies with temperature.Therefore, as long as the measured feeling warm resistance of the resistance change, can measure the temperature.At present there are mainly metal thermal resistance and semiconductor thermistor two categories.metal thermal resistance of the resistance value and temperature can use the following general approximate relation said, namelyRt = Rt0 [1 + alpha (t - t0)]Type of Rt for temperature t resistance;Rt0 for temperature t0 (usually t0 = 0'C) corresponding to the resistance;Alpha for temperature coefficient.The relationship between resistance and temperature of semiconductor thermistor isRt = AeB/tType of Rt for temperature t resistance;A and B depends on the structure of the semiconductor material constant.In comparison, the thermistor temperature coefficient is bigger, room temperature resistance value higher (usually over thousands of Europe), but the poor compatibility, nonlinear, temperature measuring range, only 50 ~ 300'C or so, a large number of used in home appliances and automotive temperature detection and control.metal thermal resistance is generally applicable to - 200 ~ 200'C temperature measurement range, is characterized by measuring accuracy, good stability, reliable performance, is widely application in process control.Industry commonly used metal thermal resistance from the perspective of the change of resistance with temperature, most of the metal conductor has this property, but not all can be used for measuring temperature resistance, as the heat resistance of the metal material general requirements:As far as possible big and stable temperature coefficient, resistivity larger (reduce the size of the sensor under the same sensitivity), in the use of the temperature range has the stable chemical physical properties, good replication of material and resistance change with temperature have the function relationship between the (best linear relationship).We according to your specific requirements for product production, please contact us directly:Mr.YangTEL:+86-550-7855026FAX:+86-550-7855025MOB:+86-15056558682