133 results about "Platinum resistance" patented technology

The reciprocal compressor is the key power equipment in petrochemical industry, but due to its complex structure and motion nature, the failure rate of reciprocal compressor in production is high. According the structural characteristics and monitoring targets of reciprocal compressor, the power-showing hole is equipped with a special pressure sensor which is high temperature resistant, high pressure resistant and fatigue resistant; the three directions of cross slideway box wall, cylinder side wall and cylinder cover wall are both equipped with vibration acceleration sensor; the piston rod box body is in-equipped with displacement sensor; the air intake pipe and the air discharge pipe are equipped with platinum resistance temperature sensor on themselves; the rotary axle is equipped with a key phase sensor. The signals of various sensors are transmitted into underlying computer to be stored after pass through amplifier and A / D converter. The amplifier, A / D converter and the underlying computer is laid in the explosion-proof tank on production site. The signals of underlying computer are inputted into up-lying computer through network to analysis and process data and diagnose faults. The present invention is characterized by establishing a set of practical reciprocal compressor state online motion and fault diagnosis system which on-site use is convenient and express, diagnosis accurate rate is high. As far as now, the system in same type has not been used on site, so it has very good application prospect.

The invention relates to an oil pipe and casing pipe comprehensive flaw detection system (MultiCIS). The downhole flaw detection system is a downhole instrument set formed by connecting a plurality of flaw detection instruments and auxiliary instruments in series up and down. The downhole instrument set is mainly composed of a rotary short section, a transmission short section, a platinum resistance thermometer, a gamma instrument, a casing pipe collar positioning instrument, centering devices, a multi-arm caliper device, an electromagnetic thickness meter, the electromagnetic flaw detectors, a storage type downhole camera and a noise meter, wherein the multi-arm caliper device mainly refers to a 24-arm caliper device or a 40-arm caliper device or a 60-arm caliper device. The instrument at the uppermost end of the downhole instrument set is connected with a cable head, and signals transmitted out by the instruments in the downhole instrument set are transmitted to a ground data acquisition system through the production logging transmission short section by means of a cable. According to the downhole flaw detection system, after being connected, the downhole instrument set comprising the flaw detection instruments is released into a well at a time so as to comprehensively detect an oil pipe and a casing pipe, multiple sets of logging data are obtained through one-time logging, mutual complementation and verification can be conducted between the obtained logging data, and operation efficiency and reliability are greatly improved. Comprehensive assessment can be conducted on oil pipe and casing pipe flaw detection.

The invention discloses a program-controlled cooling device of cryogenic protective agent solution for vitrification storage, comprising a pure cryogenic protective agent storing cistern, a constant flow pump, a stainless steel container for low-temperature protective agent, an electromagnetic stirring device, a refrigerating unit, a heating unit and a programmable controller. The invention is characterized in that pure cryogenic protective agent is continuously filled in the cryogenic protective agent storing cistern through the constant pump, temperature of the cryogenic protective agent is continuously decreased under the action of cooling medium provided by the refrigerating unit, the programmable controller controls the heating capacity of the heating unit according to the temperature signal detected by a platinum resistance, therefore, the temperature of the cryogenic protective agent solution is constantly higher than freezing point of 5 to 10 DEG C. The invention can be applied to low temperature storage of biological materials.

The invention is concerned with the design method of the combined temperature sensor, including the protecting sleeve, the platinum resistance, the thermistor, the connecting line, the measuring circuit, and the microprocessor. The sensor samplings the measure result of the platinum resistance and the thermistor when it works. The platinum resistance with stable capability and good linearity during the steady state demarcates the thermistor, which solves the shortage of the thermistor that is low dispersing and re-existing; the platinum resistance uses the character of the thermistor that is rapid reaction and high delicacy to conquer the shortage of big time-constant when the ambient temperature changes acutely.

The invention provides platinum resistance temperature measuring equipment which comprises a constant current circuit, a filter circuit, a module A / D converter circuit, a single-chip, a light emitting diode nixie tube display circuit, a recommend standard 232 (RS232) interface circuit and a personal computer (PC) machine, wherein the constant current circuit comprises a first resistance, a sixth resistance, a first integrated circuit and a platinum resistor, the module A / D converter circuit comprises a module A / D converter, and the filter circuit comprises a second resistance, a second capacitance, a fifth resistance and a first capacitance. The invention further provides a temperature measuring method of the platinum resistance temperature measuring equipment. The platinum resistance temperature measuring equipment and the temperature measuring method of the platinum resistance temperature measuring equipment facilitates temperature calibration, is high in measurement accuracy, good in stability, simple in hardware structure, convenient to produce, and small in size, and facilitates miniaturization of products.

The invention relates to an integrated flow and wind speed sensor, which is integrally formed by a thermal mass flow sensor and a fluid oscillatory type flow sensor which are in series connection. The integrated flow and wind speed sensor of the invention based on two principles that thermal film platinum resistance turns cold in gas flow and is reduced by resistance, and fluidic flow sensor outputs pulse relative to the gas flow rate when being entered by the gas flow, thereby realizing integral uniformity from the sensor structure. The sensor of the invention is integrally formed by the thermal mass flow sensor and the fluid oscillatory type flow sensor which are in series connection, when the flow is relatively low, the thermal mass flow sensor can be used to measure, when the flow is relatively high, the fluid oscillatory type flow sensor can be switched to perform measuring, the sensor of the invention can measure low-flow just by employing the conventional method, and also can be used to measure high-flow with largely widened measurement range and perfect social and economical benefits.

The invention relates to a quasi-adiabatic sealing type argon three-phase-point recurrence device, comprising an outer barrel body and an upper cover, and a three-phase-point vessel connected with the upper cover; a vacuum chamber is arranged in the vacuum chamber, the three-phase-point vessel is arranged at the center of the vacuum chamber, a first heating membrane is attached on the outer side surface of the upper part of the three-phase-point vessel, a radiation barrier is arranged between the vacuum chamber and the three-phase-point vessel, a second heating membrane is attached on the outer side surface and the bottom surface of the radiation barrier, a temperature equilibrium block is arranged at the lower part of the three-phase-point vessel, a plurality of jack channels for a pole platinum resistance thermometer well are arranged in the temperature equilibrium block, and jack channels for a sleeve pipe platinum resistance thermometer well are arranged at the center of the temperature equilibrium block; by adopting the structure, the argon three-phase-point recurrence device improves the recurrence accuracy in the experiments and application, the plateau warming duration is long, the detection efficiency is improved and the transmission of temperature criterion is ensured.

This invention discloses an intelligent monitoring device for superconducting gravimeter double-temperature refrigeration Expander, relating to a temperature monitoring and recording device. The invention mainly includes the first, second cooling-platinum resistance, ADC, microprocessor, memory, characters display, relay, and RS-232 interface. This invention uses sensors and computer technology with the integration of monitor and control to achieve the display, storage and monitoring of two refrigeration temperatures for double-temperature refrigeration Expander. When the two refrigeration temperatures are beyond the set scope, it can make the sound and light automatic alarm, and at the same time rapidly cut off the power, to protect the Expander and the superconducting gravimeter.

The present invention discloses a calorstat for a Christian Vieri experiment, and comprises a metal bath cavity body, an electrical heater, a sample cup bracket, a bracket driving mechanism, a temperature controller which contains a platinum resistance thermometer and a thermoregulator, and a temperature measured signal deduced mechanism which contains a conductive ring and a dynamic electrode group. The present invention is characterized in that the platinum resistance thermometer is directly positioned in a sample testing area. The conductive ring is connected with the output terminal of the platinum resistance thermometer. The dynamic electrode group is connected with the temperature signal input terminal of the thermoregulator. The lower end of the dynamic electrode group keeps a good contact with the conductive ring. When the bracket driving mechanism drives the sample cup bracket to rotate, the dynamic electrode group slides on the surface of the conductive ring, and the resistance value of the platinum resistance thermometer is transmitted to the thermoregulator, so the heating current of the electrical heater is controlled, Thereby the temperature of the sample placed area can be directly controlled and displayed in real time, and the standard requirement of the Christian Vieri experiment can be satisfied. The invention has the advantages of high temperature control precision, convenient use and low cost.

The invention discloses a dynamic body temperature monitoring system. The system comprises a body temperature monitoring module, an intelligent communication terminal software program and a warning and reminding module, wherein a thin-film platinum resistance temperature sensor is used as the body temperature monitoring module. Based on a bluetooth data transmission technology, the independent monitoring of temperature data in 1-5 channels can be realized, the size is small and the system is convenient to carry and use. The dynamic body temperature monitoring system disclosed by the invention has the advantages that the automatic continuous dynamic body temperature monitoring can be realized, the individualized temperature early warning setting and body temperature data storage can be realized, the range of applicable people is wide and the retrospective analysis of the body temperature data can be realized after the body temperature data is transmitted to the software program of an intelligent communication terminal through the bluetooth technology.

The invention relates to a nuclear-grade platinum resistance thermometer and the method for reducing thermal response time with the invention, comprising a terminal box, a wiring board arranged in the terminal box, and a protective sleeve with a built-in platinum resistance element, wherein, the temperature sensing surface of the platinum resistance element is clung tightly to the inner surface of the protective sleeve, and no MgO powder is filled between the platinum resistance element and the protective sleeve; the outer surface of the protective sleeve is clung tightly to the inner surface of an external protective tube; the platinum resistance element is welded with an armored leading wire; MgO powder is filled in the armored leading wire; a metal coat is plated on the outer surface of the protective sleeve. The invention has the advantages that due to the temperature sensing surface of the platinum resistance element clung tightly to the protective sleeve and the protective sleeve clung tightly to the external protective tube, the heat conductivity of the thermometer is improved; the thermal response time is reduced; the earthquake resistant requirement for nuclear power station is satisfied; due to wear-resistant, heat-resistant, and oxidation-resistant special metal coating on the surface of the protecting sleeve, the protecting sleeve does not stick to the protective tube due to oxidation corrosion.

The invention discloses a natural temperature varying intelligent calibration system of ground-based microwave radiometer, which is composed of a micro radiometer, a natural temperature varying calibration load, a platinum resistance thermometer, a thermometric instrument, a voltage collecting card and a computer. The calibration load comprises a metal box, a foam box, liquid nitrogen, a metal plate, an absorber and a conformal cover, wherein the foam box is in the metal box, the absorber is at the bottom of the foam box, which bottom is mounted with the conformal cover and upper is mounted with the porous metal plate. The invention is characterized in that the microwave radiometer is arranged at the lower of the calibration load and the microwave calibration load is calibrated by measuring the temperature of the calibration load from liquid nitrogen temperature to room temperature, the invention uses automatic measurement control technique to automatically measure the indexes of the microwave radiometer as sensitivity, linearity, stability, accuracy and integration time, with simple operation and high efficiency.

The invention relates to a high-precision platinum resistor temperature measuring system and a temperature measuring method based on the system. The high-precision platinum resistor temperature measuring system comprises an RC oscillator (101), a frequency measuring chip (102), a reference clock circuit (103), an SCM (104), a liquid crystal display (105) and a supervisory computer (106), wherein a platinum resistance sensor and a fixed capacitor form the RC oscillator (101) together by a two-wire connecting method; when the temperature changes, a resistance value of a platinum resistor is changed along with the temperature, the oscillation frequency of the oscillator is changed, thereby modulating the variation of the platinum resistor into a time-variant frequency signal; the frequency variation is measured by the frequency measuring chip; a measured value is transmitted to the supervisory computer; the calculation from frequency variation to temperature variation is finished in the supervisory computer by a high order polynomial equation, thereby realizing the high-precision temperature measurement by the platinum resistor. The invention has the characteristics of high temperature measuring precision, low realization cost and favorable stability.

The invention belongs to the technical field of product testing and relates to a testing device for a long rod platinum resistance thermometer with a length over 700mm in particular. The testing device include a constant temperature water bath device and at least two standard thermometers; the constant temperature water bath device includes a water bath chamber which can be inserted into the long rod platinum resistance thermometer to be tested; the two standard thermometers are respectively inserted into the two ends of the water bath chamber as well. The testing device not only has a simple structure and is conveniently used, but also greatly reduces the testing cost. The invention also relates to a method for testing the long rod platinum resistance thermometer with the testing device; the method includes the steps as follows: firstly inserting the long rod platinum resistance thermometer into any end of the water bath chamber; then setting the temperature value of the constant temperature water bath device and waiting for a temperature field to be stable; then reading the values of each thermometer in turn and working out a standard temperature value by utilizing the values of the standard thermometers; then comparing the temperature value of the long rod platinum resistance thermometer to be tested with the standard temperature value and judging the measuring characteristic of the standard temperature value; resetting at least two temperature values to the constant temperature water bath device and repeating the steps.

The invention provides a fuzzy adaptive central air-conditioning cooling water energy-saving control system and a fuzzy adaptive method thereof. The system comprises an industrial control computer, a programmable logic controller (PLC), an analog input module, an analog output module, a digital input module, a digital output module, a frequency converter, first and second platinum resistance temperature sensors, a cooling fan and a cooling water pump, wherein the first and second platinum resistance temperature sensors acquire the temperature signals of cooling supply and return water in real time; the signal is transmitted to the PLC and then to the industrial control computer; and the industrial control computer obtains the proportion and integral controller parameters in a cooling water pump and cooling fan control circuit through real-time computation according to the computer programs and ensures the parameters to automatically adapt to variation of the working conditions of the central air-conditioning system. The invention solves the problems of higher energy consumption and poor control performance in the operation processes of the traditional central air-conditioning cooling water systems and ensures the central air-conditioning cooling water system to operate efficiently and stably under partial load operation conditions.

The invention discloses a device and method for measuring diffusion coefficients of variable-volume constant-pressure gas in liquid. The device mainly comprises a gas sample bottle, a gas cavity, a diffusion cavity, a thermostatic bath, a valve, a vacuum pump, a reducing valve, a displacement sensor, a pressure sensor, a platinum resistance thermometer and a data acquisition system, wherein the diffusion cavity adopts a visible window structure with quartz glass; the diffusion cavity is equipped with the pressure sensor and the displacement sensor; the pressure of the diffusion cavity is kept constantly by a movable piston and a pressure-controlled gas cylinder in the diffusion process; the movement distance of the movable piston in the measurement process is measured by the displacement sensor; diffusion data of the gas in the liquid are calculated and obtained through the Fick's second law. The device realizes measurement of diffusion data of the gas in the liquid at the constant pressure, and has the advantages of simple structure, low cost, convenience in operation and stable system.

The invention discloses a hot type gas flow measuring method of a single sensor and a device thereof. The device comprises a sensor, an amplifier, a low pass filter, a singlechip microcomputer and a voltage-controlled supply circuit, wherein, the sensor is composed of a divider circuit formed by connecting a resistance and a platinum resistance PT20. The invention has simple structure, the single platinum resistance PT20 is taken as the measuring element, and the gas flow is calculated by controlling the platinum resistance PT20 to work under the two different setting temperatures and measuring the output voltage of the platinum resistance under the two different setting temperatures. The measuring method and the device of the invention are adopted to measure the gas flow, which does not need to complement the resistance additionally, eliminates the influence of the gas temperature on the flow measurement, improves the measuring precision and reduces the production cost. Tests indicate that the measuring precision of the gas flow can reach 1% and the flow measuring range ratio is approximately 100:1 by adopting the method and the device of the invention.

The invention discloses a self-cloning new human tumor drug-resistant related gene, namely TCRP1, wherein the gene and drug resistance generation of tumor chemotherapy platinum drugs has confidential relation. The expression of TCRP1 in platinum secondary drug-resistant tumor cell strains such as Tca8113 / PYM, A549 / DDP, Coc1 / DDP is raised, and the expression of TCRP1 in primary platinum drug-resistant cell strain such as lung cancer 95D is obviously superior to that of other sensitive cell strains of lung cancer. The gene is located in human chromosome 11q13.4, wherein the total length of sequence is 1834bp, the open reading frame is 708bp, and 235 amino acids are encoded. The application not only provides new information for tumor drug-resistant mechanism, but also provides new target for the design of anti-tumor drug-resistant drugs.

The invention discloses a well logging densimeter, which belongs to a measuring instrument and is applied to well logging in oil drilling. The well logging densimeter comprises a primary meter and a secondary meter, wherein the primary meter comprises an approximately long elliptical measuring tube 4 formed by bending, a high-pressure joint 1, an end plate 2, a vibration isolation plate 3, two detectors 5, an auxiliary vibrating plate 7, a vibration exciter 8, a platinum resistance temperature sensor 9, a circular shell, a cable plug 6 and the like; the secondary meter is used for providing a vibration exciting signal for the vibration exciter 8, so that the measuring tube 4 generates self-oscillation; a measured liquid flows inwards from one end 1 of the measuring tube, and flow out of the other end of the measuring tube; the secondary meter is used for amplifying, filtering and reshaping a signal output by the detectors 5, and converting a phase difference and a period into a digital quantity; a microcontroller is used for calculating and compensating temperature according to measured phase difference, period and temperature to obtain mass flow, density and temperature; and an output circuit is used for converting the mass flow, density and temperature into pulse of 1-10kHz for outputting.

The invention provides a calibration method for a sheet film platinum resistance temperature sensor and belongs to the technical field of semiconductor measurement. The method is based on a high-low temperature probe platform and includes the steps of placing the sheet film platinum resistance temperature sensor on a temperature control platform; pressing every two DC probes to a PAD pressing point; connecting four DC probes to two Hi jacks and two Lo jacks of a digital multimeter respectively; adjusting the set temperature of the high-low temperature probe platform and reading resistance values through the digital multimeter; calculating resistance temperature coefficients according to a formula and then utilizing the formula to calculate the actual temperature. According to the providedcalibration method for the sheet film platinum resistance temperature sensor, influences of an external environment on the sheet film platinum resistance temperature sensor in a micro-chamber are small, the resistance values can be precisely obtained in a high-low temperature environment, the resistance temperature values in different temperature ranges are adopted for calculating the resistance temperature coefficients, and the accuracy of temperature measurement of the sheet film platinum resistance temperature sensor is improved.

The invention relates to an automatic measuring device for the flash point of insulating oil special for electric power. The device comprises a concave heating groove connected with a control main machine, a sealing oil cup in the concave heating groove, and an oil cup cover on the sealing oil cup, wherein the oil cup cover is provided with a platinum resistance thermometer, a stirring rod, a pressure sensor and a burning exhaust pipe through holes in an inserting mode, the top end of the stirring rod is provided with a motor, the bottom end of the stirring rod is provided with blades, the pressure sensor is connected with the control main machine, and the burning exhaust pipe is provided with a solenoid valve. A determining method for the flash point comprises the steps that (1) a pressure and temperature change relationship of each standard substance is built in the control main machine; (2) a work standard curve of the flash points and the pressure relationship is built according to the known flash points of the standard substances; (3) the device is started to heat a tested oil product; (4), the flash point temperature of the tested oil product is determined. The device and method are high in detection sensitivity, high in degree of automation, free of open fire, safe, reliable and capable of avoiding the problem of environmental pollution in the experiment process.

The invention provides a device and method for measuring the specific heat capacity and phase change latent heat of a substance. The device comprises a calorimeter component and a sample temperature control component. The calorimeter component comprises a calorimeter. A magnetic stirrer used for stirring a calorimetric liquid in the calorimeter is arranged at the bottom of the calorimeter. A temperature difference thermocouple and a first temperature sensor are arranged in the calorimeter. The sample temperature control component is located above the calorimeter. The sample temperature controlcomponent comprises a thermostatic aluminum block. A platinum resistance thermometer and a tested sample are arranged in the thermostatic aluminum block. A second temperature sensor is arranged on the tested sample. The calorimetric liquid is ethylene glycol. The calorimeter is in a double-layered sleeve structure. According to the invention, the device can accurately measure the specific heat capacity of a solid and liquid and the phase change latent heat of a solid-liquid phase change material; the stability of the device is great; a wide temperature range can be measured; and the device can be used for measuring the specific heat capacity and phase change latent heat of materials in industry and scientific research, and can be used for teaching experiments of energy and power related professional courses.

The invention relates to an infrared scene sand table system for testing an infrared seeker. The infrared scene sand table system consists of a target model, background models and temperature control and power supplying systems, wherein the target model contains a heating module, the surface of the target model is coated with infrared reflection paint of different reflection ratios, and the infrared reflection paint is used for simulating infrared reflection conditions of real materials; the surfaces of the background models are covered with simulation materials, which are used for simulating the real materials, and are sprayed with the infrared reflection paint for simulating the real materials, and the background models are used for simulating topographic and geomorphic forms below a flight path; the temperature control system consists of a heating rod, a digital temperature controller and a platinum resistance temperature measuring probe and is used for controlling the temperature of the heating module in the target model and carrying out temperature adjustment on the heating module according to simulation needs. The infrared scene sand table system provided by the invention has the characteristic of infrared texture and can be used for simulating targets and backgrounds below a missile flight path, so as to provide a realistic infrared scene for infrared seeker semi-physical simulation experiments.

A capability tester based on exchanger fin cell belongs to energy sources and chemical industry technology field. The test equipment makes up by oil pressure ductwork, constant temperature oil melt, test part, heat preservation water tank and data test / collection system. Test fin, test frame, first and second red-copper base plants, first and second film heating plants, first and second adiabatic frames, first and second adiabatic plants, first and second sealed pillows, clamp, oil intake pipe, oil outlet pipe, thermocouple, intake platinum resistance, outlet platinum resistance, first and second leading press pipes, press intake sensor, press outlet sensor and digital power dial make up into the test part. The test part reduces the heat balance error by inside the heat preservation water tank and uses the electric power to offer quantity of heat. It adopts mono-layer fin as the test object to avoid the test error of the asymmetry of the matter in the exchanger with high test precision, simple manipulate and low cost.

The invention belongs to the field of temperature element calibration, and in particular relates to a calibration method of a low-temperature temperature element; and the invention aims at improving the calibration efficiency of a low-temperature temperature-sensing element and lowering the calibration cost of the low-temperature temperature-sensing element. In the invention, temperature-sensing elements are connected with constant temperature copper block terminals of a cryostat through two pins, one pin of the temperature-sensing element n is connected with a NO. n+1 terminal, and the other pin thereof is connected with a NO. n+2 terminal, wherein n is a natural number larger than 1 and smaller than 41; a standard sleeve platinum resistance thermometer is connected with NO. 45-48 terminals; the constant temperature copper block terminals and the external wiring terminals on the cryostat are in one-to-one corresponding relation; and the external wiring terminals NO. n, NO. n+1, NO. n+2 and NO. n+3 correspond to an nth passage of a scanning switch, wherein n is the natural number larger than 1 and smaller than 42. The 41 temperature-sensing elements are installed in a core of the cryostat, and compared with the installation quantity of a traditional measuring method, the installation quantity is increased by nearly 3 times, and the cost can be lowered by 75 percent. The calibration method can be applied to the field of low-temperature temperature element calibration.

Despite initial sensitivity BAD-protein phosphorylation were evaluated in patient samples and cell lines as determinants of chemo-sensitivity and / or clinical outcome, and as therapeutic targets. Induced in-vitro OVCA cisplatin-resistance was associated with BAD-pathway expression. Expression of the pathway was also associated with resistance of 7 different cancers cell-types to 8 chemotherapeutic agents. Phosphorylation of the BAD-protein was associated with platinum-resistance in OVCA cells and primary OVCA specimens, and also overall patient survival. Targeted modulation of BAD-phosphorylation levels influenced cisplatin-sensitivity. A 47-gene BAD-pathway signature was associated in-vitro phospho-BAD levels and with survival of 838 patients with ovarian, breast, colon, and brain cancer. The survival advantage associated with both BAD-phosphorylation and also the BAD-pathway signature was independent of surgical cytoreductive status. The BAD apoptosis pathway influences human cancer chemo-sensitivity and overall survival. The pathway is useful as a biomarker of therapeutic response, patient survival, and therapeutic target.

The invention provides a ground-based infrared remote sensing surface temperature inversion method, and the method comprises the steps: 1, building a measurement system and collecting the factors thataffect the measurement data; 2, finding out the main factors affecting the infrared remote sensing surface temperature through the measurement system at step 1, taking the main factors as input parameters; 3, building a BP neural network by the sample data measured at step 1; 4, correcting the data measured at step 1 through using the measurement data of a measurement station, and verifying the correctness of the method through platinum resistance measurement. The method provided by the invention can perform the remote measurement of any land surface through the principles of infrared radiation, and solves the problems of the conventional platinum resistance measurement.

Systems and methods for determining whether a cancer patient may respond to PARP inhibitor and / or platinum chemotherapy based on identifying exon excision variants in the BRCA 1 gene are provided. Exon excision variants may encode a hypomorphic BRCA1 protein. The cancer patient may be a breast cancer patient or an ovarian cancer patient. The patient may have any cancer in which exon deficiency in the BRCA1 gene contributes to resistance to PARP inhibitor or platinum therapy.

The invention supplies a high-accuracy intelligent platinum resistance thermometer which has correction feature, it comprises platinum resistance and signal modulation circuit, the platinum resistance (1) is connected with the interface circuit of the sensor (3) via the signal modulation circuit (2), EEPROM(5) is connected with the interface circuit of the sensor (3) via the I2C bus (4), the identification information, correction feature information and analog output level information are all stored in the EEPROM. The correction engine used by correction feature information is the initial value positioning and square root correction, platinum resistance is Pt100, the method of initial value positioning is measuring the resistance value individually at the condition of choosing three reference temperatures, and calculating the temperature t with the quadratic approximation square root correction method based on relational expression between temperature and resistance of the platinum resistance Pt100.