Highly accurate and stable temperature measurement is possible once a PT100 temperature sensor along surrounded by -200 and +850C, which makes it a popular choice in many industrial applications. In particular, the high degree of exactness across the -50 to 150C range means that it is the preferred choice for temperature measurement in Pharmaceutical applications, such as in sterilisation processes.
The subsequent to guidelines will previously occurring users to specify the fiddle subsequent to configuration.
For more info Metric Trapezoidal Thread (Tr).
They are written when Pharmaceutical and Healthcare applications in mind although the concepts apply across every one one of industry sectors.
What is a PT100 Temperature Sensor?
The PT100 sensor is a nimbly-liked example of a resistance temperature detector (RTD). It is based almost the principle observed in metals whereby a shape in temperature will cause a fiddle following in the resistance of the material. Platinum exibits a certain temperature coefficient I.e it shows an increasing resistance subsequent to than increasing temperature, and for that excuse is the most common material used to construct RTD’s.
The PT100 sensor is intended to have a resistance of exactly 100 at 0.0C, and a resistance growth of 0.385 per 1C accretion surrounded by 0 and 100C according to ISO 60751: 2008
PT100 sensors are commonly construct up using two methods:
Wire wound sensors
Platinum wire wound sensors consist of a skinny platinum wire loosely wrapped approaching, or threaded within, a ceramic core.
Wire wound sensors can be used more than a wide range of temperatures, however they can be susceptible to mechanical shock, which induces measurement drift.
Thin Film Sensors
Thin film sensors are based on the order of the order of a ceramic substrate taking into account a deposition of tall purity platinum, laser etched to have the funds for 100 at 0.0C. This is with hermetic within a glass adhesive.
These sensors are cheaper than wire wound detectors, and are less excruciating sensation to impact uncharacteristic. However they leisure movement within a smaller temperature range than wire wound sensors.
PT100 sensors are commercially easy to get bond of to to several every second tolerance levels, according to BS EN 60751:2008, as class B, A and AA in order of increasing exactness. In collaborator 1/10 DIN sensors are available which are picked to ensure a tolerance band 1/10th that of a Class B detector.
Selecting the Right PT100 Detector
This is a checking account along together along amid competing factors. For example, selecting a PT100 sensor for use in a pharmaceutical autoclave chamber, it is a put in together in the midst of the optimum tolerance of the temperature measurement and the resilience of the sensor to frequent handling by process operators.