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| H301 Aspirated Psychrometer |
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Our H301 Aspirated Psychrometer is an aspirated humidity sensor using the "Wet and Dry Bulb" method for reliable determination of air temperature and relative humidity. A pair of 100 Ohm 4-terminal platinum resistance elements (RTD/PRT) are used as the sensing elements.
A double-walled element enclosure minimizes errors due to thermal radiation and an optional radiation shield (/RS) is available to reduce errors due to sunlight.
A long-life motor/fan ensures a high air flow past the sensing elements for an accurate wet-bulb depression.
The instrument construction is weather resistant while retaining easy access to the sensing elements for calibration, cleaning and wick replacement. A 500ml water reservoir provides for over 7 days continuous operation.
Note: This sensor does not contain any signal conditioning or amplifiers to process the sensing element signals. 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.
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Specification Highlights:
| Accuracy: | 0.2°C (in normal meteorological conditions) | | Temperature Range: | -20 to +65 °C | | Response Time: | 50 seconds | | Maximum Wind Speed: | over 75 m/s (170mph, 150kts) | | Sensing Elements: | Two, each 100 Ohm RTD/PRT (100 Ohm+/-0.033% at 0°C) 1/3-DIN43760 | | Configuration: | Wired as a pair of 4-terminal resistors | | Air Speed Past Elements: | 4 m/s, BS4485 (fan rated 40m3/hour) | | Fan/Motor Supply: | 12V DC (typically at 350mA) | | Rated Fan/Motor Life: | 12,000 Hours (12V DC, 83% RH to DIN40046) | | Weight: | 1.4Kg | | Cables: | Fan/Motor Power: 5m 2-core
Elements: 5m, 8-core (stranded 7/0.2mm, braided shield) |
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. |
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Windspeed Limited (trading as Vector Instruments),
115 Marsh Road, RHYL, North Wales, LL18 2AB, United Kingdom
Tel: +44 (0) 1745 350700 Fax: +44 (0) 1745 344206
Email: sales@windspeed.co.uk
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Website design and content is copyright (c) 2003-2010 Windspeed Limited (unless otherise stated). All trademarks are acknowledged.
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A100 Series Anemometers
