| T302 Met Office Pattern Precision Air Temperature Sensor |
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NOTE: THIS PRODUCT IS NO LONGER AVAILABLE (AUG 2019).
The T302 is an aspirated air temperature sensor, built to a UK Government Meteorological Office design and is suitable for use where measurements of the highest accuracy are required.
A unique triple-walled enclosure is used to obtain maximum protection from measurement errors due to thermal radiation. The enclosure comprises two ABS plastic shields separated by polystyrene foam together with a 0.05mm thick stainless steel shield. A large glass-fibre 'hat' protects the entire assembly from direct solar radiation for solar elevations in excess of 66 degrees, and measures have been taken to protect against long-wave ground radiation.
The sensor is aspirated by a long life motor/fan with its power cable separate from the sensor cable to avoid interference on low-level transducer signals.
The entire assembly is weather resistant for exterior use.
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The T302 is particularly useful where small differences between air temperatures at different heights or locations need to be measured - a pair of T302 instruments can be calibrated together for this purpose.
Note: This sensor does not contain any signal conditioning or amplifiers to process the sensing element signal. Most data loggers can be configured to measure PRT/RTD sensors in a 3 or 4-wire bridge circuit, and can often also be set to control the fan/motor too.
The recommended mounting arm for use with this instrument is our type 405E2.
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Specification Highlights:
| Accuracy: | 0.1?C (0.05?C between two calibrated sensors)
| | Sensitivity to net radiation: | 5x10-5?C/Wm-2
| | Operating Range: | -20 to +65°C | | Response Time: | 30 sec. | | Max. Wind Speed: | over 75m/s. | | Sensing Element: | 1/3DIN IEC 751 100 Ohm PRT (RTD), 4-wire connection | | Aspiration Power: | 12V dc (35mA nominal) |
Notes: | | This product is manufactured to special order . |
| | Specifications are correct at time of writing and may change without notice. Please contact us to confirm the latest specifications. |
Please call/email us if you would like access to additional product information, data and specification sheets for this product.
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