Bartec R3 Series Operating Instructions Manual
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System description1Operating Instructions Radiation sensors R3XX1 System description1.1 Properties and fields of useINFRA radiation sensors from the R 3XX series are robust, stationarymeasuring sensors that are used in connection with indicating devices,controllers or recording instruments for contact-free temperaturemeasurement and temperature monitoring, control or registration.They enable you to record surface temperatures quickly and reliably even insituations where traditional contact-based measurement is very difficult, isonly possible to a limited extent or is not actually possible at all. Forinstance, they can be used on moving objects, materials with a poor thermalconductivity, plastic materials and aggressive substances, small componentswith a low thermal capacity, current-carrying elements and rails.The radiation sensor collects the thermal radiation emitted from themeasurement object and uses a lens to concentrate it on the internalinfrared sensor. An optical filter restricts the sensor’s spectral region.The IR sensor transforms the collected heat energy into an electric signal,which is then processed in a microprocessor and converted into a linearcurrent output of 4...20 mA. The influence of the ambient temperature on themeasuring cell and electronics is compensated.Sensors from the R3XX series are designed using the two-wire technique.They therefore allow measured values to be transmitted so as to be immuneto interference – even over long distances – and make wiring particularlysimple. Interfering measured value peaks that occur in quick succession canbe suppressed by a variable attenuator.The size of the measuring field recorded depends on the optics of the sensorconcerned and on the distance between the sensor and the measurementobject (see measuring field diagrams). It is possible to set the emissionfactor (which is important for the radiation measurement), the transmissionfactor and other parameters.An interface with a HART® protocol is used to transmit the measured valuesfrom the sensor and to transmit program information to the sensor.Thanks to the features mentioned, measurement sensors from the R3XXseries can also be used in places where other measuring systems fail due tounfavourable ambient conditions. Examples include:Thermoforming machines for plasticsExtruders for plasticsCalendering lines for plastic filmsCoating machinesGlassworkingMetalworkingMonitoring of goods in transit on conveyor beltsMonitoring of plant overheatingPropertiesFields of use |
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