Lake shore PT-100 platinum resistance temperature sensor

      PT-100 Platinum resistance thermometer (PRT) It plays an important role in cryogenic research and industrial cryogenic applications .

      Research

      Many cryogenic research platforms also include high temperature capabilities , It can extend several times above room temperature . These platforms need temperature sensors that can measure and withstand these extreme temperatures . The useful temperature range of the platinum sensor is 14 to 873 K, It is invaluable for this application .

      Be careful ： The platinum sensor is below 14 K Will lose sensitivity .

      On a large scale

      The production and transportation of liquid refrigerants are commonly used in many liquid refrigerants （ Especially liquid nitrogen ） Production and transportation of , Platinum sensors are generally considered the preferred sensor for temperature monitoring . Their bolted on package options and interchangeable options allow multiple sensors to be used with a single temperature curve , This makes them easier to implement and maintain .

      Typical platinum resistance value

 

      Typical platinum sensitivity values

      Typical platinum dimensionless sensitivity values

      Platinum function

      Temperature range ：14 K to 873 K（ Depending on the model ）

      Provide traditional wound packaging or bolted adapters

      Conform to the requirements of platinum sensors IEC 751 standard

      High reproducibility ：77 K When is ±5 mK

      40 K The above low magnetic field dependence

      Very suitable for ionizing radiation

      Calibration options for sensor groups with a single curve

      Temperature curve options

      except 100 Ω B The natural temperature accuracy of the platinum like sensor ,Lake Shore A variety of calibration and characterization options are also available to suit different applications .

      Options with unique characteristics

      Temperature and resistance curves tailored to each sensor

      Can't be compared with other sensor Use the same curve exactly

      This is achieved by measuring each sensor according to a known temperature standard at multiple temperature points

      It usually produces the most accurate measurement solution

      Calibrated

 

      Lake shore The features of the metered cryogenic thermostat are 14 K To one of the highest temperatures . The most accurate solution , But it takes more time and energy , The price is higher than other options .

      When the most reliable temperature measurement is critical , Will be the desired sensor selection .

      SoftCal

 

      Each sensor measures at several temperature points , To create a unique curve , This curve is adapted from a typical 100 Ω Platinum sensor .

      Useful when a small number of sensors are required and only medium accuracy is required , And the sensor will mainly measure at or above LN 2 temperature

      Interchangeable options

      A sensor capable of using a single temperature versus resistance curve , This is not unique to any sensor

      Each sensor is unique , But it will fall within the specified offset range from the reference curve

      Generally, it is not as accurate as the sensor characterized separately , But easier to implement and maintain

      matching

      A set of sensors （ Now as many as 50 individual ） After measurement and selection , To ensure that they all fall within the group of individual reference sensors 77.35 K (LN 2 ) Of 0.1 K Within the scope of . This results in a set of sensors with a single curve than the standard B Level platinum sensors are much more accurate .

      This method makes them very suitable for liquid nitrogen transmission lines in large cryogenic facilities , The temperature sensor measures the presence of liquid nitrogen most of the time .

      Not calibrated

      100 Ω B Default accuracy of platinum like sensors .

      Most useful for temperatures relatively close to room temperature , Because these sensors become less accurate at low temperatures , Or for cases where absolute accuracy is less important than identifying temperature changes .