Configured for use wiith Campbell ET stations
Overview
The 034B-ET, manufactured by Met One, combines a three-cup anemometer and vane into a single integrated package to measure wind speed and direction. This wind set is constructed out of lightweight aluminum and is designed for continuous, long-term operation for your applications.
For this version of the 034B Wind Set, the cable terminates in a connector and is the ideal length for attachment to the ET107 or ET106 ETo Weather Station.
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Technical Description
The 034B-ET monitors wind speed using a three-cup anemometer that contains a sealed magnetic reed switch. Rotation of the cup wheel produces a pulse that is directly proportional to wind speed. The frequency of the pulse is measured by the datalogger pulse count channel, then converted to engineering units (mph, m/s, knots).
Wind direction is sensed with a potentiometer. With the precision excitation voltage from the datalogger applied to the potentiometer element, the output signal is an analog voltage that is directly proportional to the azimuth of the wind direction.
Specifications
| Operating Temperature | -30° to +70°C |
| Cable Length | 170.18 cm (67 in.) |
| Weight | 907 g (2 lb) |
Wind Speed (Anemometer) |
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| Range | 0 to 75 m/s (0 to 167 mph) |
| Accuracy < 10.14 m/s (22.7 mph) | 0.1 m/s (0.25 mph) |
| Accuracy > 10.14 m/s (22.7 mph) | ±1.1% of true |
| Resolution | (0.7998 m s-1) / (scan rate in seconds) or (1.789 mph) / (scan rate in seconds) |
| Starting Threshold | 0.4 m/s (0.9 mph) |
| Sensor Output | Pulsed contact closure |
| Anemometer Radius | 10.7 cm (4.2 in.) |
| Anemometer Height | 24.4 cm (9.6 in.) |
Wind Direction (Vane) |
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| Mechanical Range | 360° |
| Electrical Range | 356° (4° open) |
| Accuracy | ±4° |
| Damping Ratio | 0.25 |
| Resolution | < 5° |
| Potentiometer Resistance | 0 to 10 kΩ (open at crossover) |
| Vane Length | 33.5 cm (13.2 in.) |
Compatibility
The 034B-ET is a replacement part for the ET107 and ET106.
Related Documents
Product Brochures
Related FAQs
Number of FAQs related to 034B-ET: 4
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The information included on a calibration sheet differs with each sensor. For some sensors, the sheet contains coefficients necessary to program a datalogger. For other sensors, the calibration sheet is a pass/fail report.
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This depends on the information contained in the calibration sheet:
- If the calibration sheet contains coefficient information, Campbell Scientific keeps a copy, and a replacement copy can be requested.
- If the calibration sheet does not contain coefficients, Campbell Scientific does not keep a copy. It may be possible to contact the original manufacturer for a replacement copy.
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Most Campbell Scientific sensors are available as an –L, which indicates a user-specified cable length. If a sensor is listed as an –LX model (where “X” is some other character), that sensor’s cable has a user-specified length, but it terminates with a specific connector for a unique system:
- An –LC model has a user-specified cable length for connection to an ET107, CS110, or retired Metdata1.
- An –LQ model has a user-specified cable length for connection to a RAWS-P weather station.
If a sensor does not have an –L or other –LX designation after the main model number, the sensor has a set cable length. The cable length is listed at the end of the Description field on the product’s Ordering tab. For example, the 034B-ET model has a description of “Met One Wind Set for ET Station, 67 inch Cable.” Products with a set cable length terminate, as a default, with pigtails.
If a cable terminates with a special connector for a unique system, the end of the model number designates which system. For example, the 034B-ET model designates the sensor as a 034B for an ET107 system.
- –ET models terminate with the connector for an ET107 weather station.
- –ETM models terminate with the connector for an ET107 weather station, but they also include a special system mounting, which is often convenient when purchasing a replacement part.
- –QD models terminate with the connector for a RAWS-F Quick Deployment Station.
- –PW models terminate with the connector for a PWENC or pre-wired system.
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Many Campbell Scientific sensors are available with different cable termination options. These options include the following:
- The –PT (–PT w/Tinned Wires) option is the default option and does not display on the product line as the other options do. The cable terminates in pigtails that connect directly to a datalogger.
- In the –C (–C w/ET/CS110 Connector) option, the cable terminates in a connector that attaches to a CS110 Electric Field Meter or an ET-series weather station.
- In the –CWS (–CWS w/CWS900 Connector) option, the cable terminates in a connector that attaches to a CWS900-series interface. Connection to a CWS900-series interface allows the sensor to be used in a wireless sensor network.
- In the –PW (–PW w/Pre-Wire Connector) option, the cable terminates in a connector that attaches to a prewired enclosure.
- In the –RQ (–RQ w/RAWS Connector) option, the cable terminates in a connector that attaches to a RAWS-P Permanent Remote Automated Weather Station.
Note: The availability of cable termination options varies by sensor. For example, sensors may have none, two, or several options to choose from. If a desired option is not listed for a specific sensor, contact an application engineer at Campbell Scientific for assistance.