05103-LC AND 05305-LC R.M. YOUNG WIND MONITOR FOR METDATA1
2
4.2 WIND DIRECTION INSTRUCTION CODE
MetData1 uses Instruction 4 (excite, delay, and
measure) to measure wind direction. In
general, a delay of 2 (0.02 seconds) is sufficient
when lead lengths are less than 100 feet. If the
cable is 100 to 1000 feet, use a delay of 20
(0.20 seconds). If you need further assistance
with the delay, contact Campbell Scientific's
Marketing Department. The wind direction
potentiometer has a five degree deadband
between 355 and 360 degrees; therefore, the
multiplier is 355/Excitation Voltage. The offset
is zero.
MetData1 Datalogger Program Instruction
01:
P4
(Excite, Delay, Measure)
01:
1
Rep
02:
5
2500 mV slow
03:
3
In Chan
04:
2
Ex Chan
05:
2
Delay (Units 0.01 Sec)
06: 2500
mV Excitation
07:
*
08:
0.142
Mult
09:
0
Offset
* Proper entry will vary dependent on input
location assignment.
5. MAINTENANCE AND REPAIRS
R.M. Young suggests the anemometer bearings
be inspected at least every 24 months. Please
refer to the R.M. Young manual for
maintenance information.
Contact R.M. Young's customer service
department directly to obtain repair cost
estimates and authorization for return of the
unit. Their phone number is (616) 946-3980.
6. REFERENCES
Gill, G.C., 1973: The Helicoid Anemometer
Atmosphere, II, 145-155.
Baynton, H.W., 1976: Errors in Wind Run
Estimates from Rotational Anemometers Bul.
Am. Met. Soc., vol. 57, No. 9, 1127-1130.
Содержание Young 05103-LC
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