Campbell-scientific 034A-L WindSet Manual de usuario descargar pdf (Pagina 10)

MET ONE 034A-L WINDSET

07: Real Time (P77)

1: 0110 Day,Hour/Minute

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.

** 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. LONG LEAD LENGTHS

When lead lengths greater than 200 feet are

required to measure the 034A-L, use the DC

Half Bridge instruction, Instruction 4, with a 20

millisecond delay to measure wind direction.

The delay increases the settling time before the

measurement is made.

With a CR10(X), use a 2500 mV excitation and

the 2500 mV measurement range. With a 21X,

use a 5000 mV excitation and the 5000 mV

measurement range.

CAUTION: The 60 Hz rejection option can

not be used with the DC Half Bridge

instruction, when the delay is not zero. Do

not used long lead lengths in electrically

noisy environments.

TABLE 7-1. Multiplier and Offset for Wind

Direction when using Lead Lengths Greater

than 200 Feet

Units Datalogger

type

Instruction

number

Multiplier

Offset

degrees CR10(X) 4 0.288

degrees 21X 4 0.144

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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Campbell-scientific 034A-L WindSet Manual de usuario Pagina 10

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