To be used with Thermal Comfort Datalogger 1221 The Air Temperature Transducer MM0034 measures the air temperature with minimal thermal radiation interference from hot or cold objects. Air temperature is one of the six parameters required to evaluate the thermal environment, according to ISO 7730 . The transducer measurement principle provides accurate measurement results, which are both stable and traceable. The transducer can be used with the following instruments: Thermal Comfort Data Logger 1221, Multipoint Sampler and Doser 1303 and Multipoint Sampler 1309.
Stable and accurate results requires a stable transducer and signal processing system. To fulfill this, a Pt100 resistor sensor is used in this transducer. The sensor is surrounded by an open ended aluminum-foil cylinder. This is highly polished to reduce the thermal radiation interference from any hot or cold bodies in close proximity to the transducer. The cylinder, with its open ends, enables a free flow of air to come in contact with the sensor. By choosing a Pt100 sensor and a 4-wire connection, it is possible to connect the transducer via an extension cable without loss of accuracy.
Pt 100 Sensor is a resistor sensor (resistance of 100 Ohm at O°C) made of platinum, which provides excellent stability and accuracy. The actual sensors chosen for this transducer provide results within a narrow tolerance. This enables the transducer to be moved around and connected to other instruments without requiring any pre-measurement adjustments to be made. Although the transducer will operate without ever requiring recalibration, it should be checked regularly for possible physical damage, which may impair its functionality.
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