Campbell Met One 034A-L Spécifications télécharger pdf (Page 15)

Met One 034B Windset

08: Wind Vector (P69)

1: 1 Reps

2: 0 Samples per Sub-Interval

3: 00 S, θu, & σ(θu) Polar***

4: 1* Wind Speed [ WndS_m_s ]

5: 2* Wind Direction [ WndD_deg ]

-Input Locations-

1 WndS_m_s

2 WndD_deg

* Proper entries will vary with program and datalogger channel and input location assignments.

** On the 21X use the 5000 mV input range and the a 5000 mV excitation voltage.

*** Average wind speed, average unit vector wind direction, standard deviation of unit vector wind

direction

6. Sensor Maintenance

1 Month

• Do a visual/audio inspection of the anemometer at low wind speeds.

Verify that the cup assembly and wind vane rotate freely. Inspect the

sensor for physical damage. Verify cups and vane are tight.

6 Months

• Replace anemometer bearings if operating under harsh conditions

1 Year

• Replace anemometer bearings. Contact Campbell Scientific for a Return

Materials Authorization (RMA) number at (801) 753-2342.

2 Years

• Replace the wind vane potentiometer and bearings. Contact Campbell

Scientific for a Return Materials Authorization (RMA) number at (801)

753-2342.

7. Troubleshooting

7.1 Wind Direction

Symptom: -9999 or no change in direction

1. Check that the sensor is wired to the Excitation and Single-Ended channel

specified by the measurement instruction.

2. Verify that the excitation voltage and Range code are correct for the

datalogger type.

3. Disconnect the sensor from the datalogger and use an ohm meter to check

the potentiometer. Resistance should be vary from 11K to 21K ohms

between the blue and green wires depending on vane position. Resistance

should be vary from 1K to 11K ohms between the white and green wires

depending on vane position.

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Campbell Met One 034A-L Spécifications Page 15