Model 162ce is a long-stem standard platinum resistance thermometer and satis˜es all the requirements as a de˜ning instrument on the international temperature. Temperature t and the resistance r(001°c) at the triple point of water the 162 sprts are constructed with pure, strain-free platinum and satisfy the its-90 criteria. Instructions, platinum resistance thermometer installation lake shore cryotronics, 575 mccorkle blvd westerville, oh 43082 wwwlakeshorecom. Note - there are also pt1000 sensors with resistance 1000 ohms at 0 °c the linearization equation for the pt100 thermometer is r t = r 0 (1 + a t + b t 2 + c (t - 100) t 3) (1.
100 (1000) ohm platinum rtd resistance chart ( move decimal point 1 place to the right when converting from 100 ohm to 1000 ohm platinum rtd resistance curve. Platinum resistance thermometers (prt) characteristics a platinum resistance thermometer (prt) is a thermometer constructed from a high purity platinum element (wire-wound coil or thin film) placed in a tube of metal or glass and sealed with an inert atmosphere and/or mineral insulator. The hh376 is a high accuracy rtd thermometer plus a powerful data logger the unit can store up to 16,000 records at programmed intervals windows® based software and usb interface cable are included to allow real time or recorded data to be read by a pc through the usb or rs232 port (rs232 cable is optional. Resistance thermometers utilise a high precision sensing resistor, usually platinum, the resistance value of which increases with temperature the dominant standard adopted internationally is the pt100 which has a resistance value of 1000 ohms at 0°c and a change of 3850 ohms between 0 a nd.
Platinum resistance thermometers (sprts) calibrations are performed using thermometric fixed points to realize the international temperature scale of 1990 over the range 838058 k to 933473 k. Platinum resistance thermometers within a limited range several metals and alloys have an approximately linear resistivity alteration depending on temperature resistance thermometers are sensors that allow determining temperature by measuring the electrical resistance of the sensor, assuming that it is in thermal equilibrium with the medium to. The resistance/temperature characteristic for standard platinum resistance thermometers, as defined by the its- 90 (international temperature scale of 1990), is a complex set of equations beyond the scope of this document. Platinum is the most commonly used metal for rtd elements due to a number of factors, including its (1) chemical inertness, (2) nearly linear temperature versus resistance relationship, (3) temperature coefficient of resistance that is large enough to give readily measurable resistance changes with temperature and (4) stability (in that its.
Resistance temperature detectors with leadwire the r1 and r2 style resistance temperature detectors (rtds) are increasingly becoming the sensor of choice for temperature measurement applications due to the accuracy and long term stability that platinum elements offer. The international temperature scale of 1990 (its-90) published by the consultative committee for thermometry (cct) of the international committee for weights and measures (cipm) is an equipment calibration standard for making measurements on the kelvin and celsius temperature scales. Semiconductor circuts platinum resistance thermometers summary rtds are based on the fact that the resistance of metal wire increases with temperature practical devices are made of metals that exhibit relatively large temperature coefficients of resistance. Thermoworks' selection of calibration platinum resistance thermometers (prt's) are highly resistant to corrosion and stable over wide temperature ranges available in the following models and more, please contact our technical sales team for more details or to place an order. Hart does not warrant calibrations on the platinum resistance thermometer hart authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of hart.
Platinum resistance thermometer calibration procedures are similar whether the method selected is characterization or tolerance testing for best accuracy with modern equipment choose characterization. The pt-104 platinum resistance data logger gives you the ultimate in resolution and accuracy you can use it to measure temperature, voltage and resistance having both usb and ethernet interfaces gives you the choice of how you connect and power your pt-104, along with the ability to access the pt-104 remotely over a lan or the internet. Platinum resistance thermometer extension cable, pvc insulated & screened • pvc insulated cable for extending platinum resistance thermometers • can be used to extend 2, 3 or 4 wire rtd configurations. In undersea exploration: water sampling for temperature and salinitya tiny thermistor with a platinum-resistance thermometer its operations are carried out in such a way as to fully exploit the fast response of the thermistor and the high accuracy of the platinum thermometer. A platinum resistance therometer is formed in a process which includes the defining of a path for the resistance thermometer in an inert material deposited in a layer on the substrate.
2 fluke corporation, hart scientific division how to calibrate an rtd or platinum resistance thermometer (prt) step 2: connection to readout this step is straightforward. The platinum resistance thermometer a review of its construction and applications by liodney price the platinum resistance thermometer is a versatile instrument for. The temperature measurement through platinum resistance thermometer is easier as compared to the gas thermometer the meter gives the precise reading of temperature the thermometer has a wide range from 200 to 1200° celsius.
The resistance of wire a is greater because its area is less than wire b since area is related to radius (or diameter) squared, the diameter of a must be two times less than the diameter of b. We are engaged in offering excellent quality platinum resistance thermometer tour valuable clientsthe thermometer comprises a length of fine platinum wire of about 2 ohms resistance, would noninductively on a mica frame and soldered. The platinum resistance thermometer, prt, is the reference on which the international definition of temperature is based so long as the international temperature scale, its-90, is valid, the prt is the most accurate means of measuring temperature. An rtd or resistance temperature detector is a passive circuit element whose resistance increases with increasing temperature in a predictable manner the traditional rtd element is constructed of a small coil of platinum, copper, or nickel wire, wound to a precise.
Process parameters ltd manufactures temperature sensors, thermocouples, thermal imaging camera equipment, and platinum resistance thermometer selections (also known as rtds and pt100) we're experienced at what we do, and manufacture all of our products to suit our customers designs right here in the uk.