Industrial thermocouples – Part 2: Tolerances – SS-IEC THERMOCOUPLE THERMOMETRY. Thermocouple Accuracies. Tolerance classes for thermocouples to IEC Fe-Con (J). Class 1. IEC Reference, Edition, Title / Details. ASD-STAN prEN P1. Connectors, electrical, circular, scoop-proof, coupled by threaded ring, fire- resistant.
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The larger the measuring range, the more universal the possible range of applications. Thermocouples Thermocouples consist of two spot-welded wires of different metals or 584-22.
The temperature sensors listed are also available, on request, with other lengths and diameters Surface sensors with flat measuring tip – For measurements on good heat conductors, on even and plain surfaces. The high resolution of 0. Sensors with heat-resistant measuring tip – For measurements at extremely high temperatures.
Selecting the right type of temperature sensor depends on your lec task. An increased accuracy can be achieved by a multi-point adjustment of the sensor kec the calibration process. NTC sensors thermistors have a significantly higher resistance than Pt sensors.
Increased accuracy thanks to multi-point adjustment of the NTC sensor during the calibration process. Increased accuracy for calibrated sensors thanks to multi-point adjustment of the Pt sensor.
With immediate effect, the sensor connecting cables for many sensor types will use a new thermal line stranded wire, thermal line class 2 instead of the conventional compensation line. We can manufacture it according to your specifications technical drawing or detailed specification and supply you with a customised sensor!
The construction variants of temperature sensors are as many and diverse as the measuring tasks. Measuring range Accuracy Response time Stability Type of construction.
Industrial thermocouples – Part 2: Tolerances
Pt Sensors When measuring the temperature the increase in resistance at increasing temperatures is utilised at the Pt sensors. Processing, crossing points, terminal points and connecting cable influence the accuracy of the temperature sensor. Irc accuracy class is specified for every thermocouple sensor. Infrared sensors do not contact the device under test and they have very small time constants, but they depend on the emission grade.
Due to the small resistance variation 0. Heat-resistant cables are also available on request.
Basics of temperature measurement
Measuring range PT resolution 0. Sword probe – For measurements in paper, cardboard and textile stacks. A relatively small thermoelectric voltage is caused, which depends on the temperature difference between the measuring point and the connecting terminals.
T max is the maximum operating temperature of the sensor tip. Surface sensor with spring-type thermocouple band – For quick measurements, also on non-plain surfaces.
The adjustment can be realized in 2 points zero, gradient or in over 30 points as multi-point adjustment. Thanks to this procedure the slightest deviations are archived on the calibrated temperature points.
For example, thermocouples, resistor-based sensors Pt and Ntc and pyrometers infrared sensors are available.
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The accuracy applies within the above specified range of validity. The specified T 90 times refer to measuring operations in a moving iiec. Ntc sensors are very fast, accurate, but they have a limited measuring range. Heat-resistant cables are available on request. When measuring the temperature the increase in resistance at increasing temperatures is utilised at the Pt sensors.
Temperature measurement – Ahlborn Meß- und Regelungstechnik GmbH
The following accuracy is specified for the NTC temperature sensor with a cable length of 2 meters:. Lec cable with thermal line stranded wire There is no adverse temperature effect at the juncture from measuring element to cable With immediate effect, the sensor connecting cables for many sensor types will use a new thermal line stranded wire, thermal line class 2 instead of the conventional compensation jec.
Resistor-Based Sensors Pt Sensors. Transducer with free sensor – For measurements in air and gases.
The temperature sensors listed are also available, on request, with other lengths and diameters. The linearization of the NTC characteristic is calculated accurately with the Galway Steinhart coefficient no approximation procedure. The high precision of the digital temperature sensor is independent from connected extension cables. Additionally, the operative ranges of the connecting cable and the transition sleeve or similar have to be considered.