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50.5-9800 Rev C.doc

1600 Washington Blvd.

Regional Sales & Service

Grants Pass, Oregon 97526

3206 Main St. Suite 106

Telephone 541-471-7111

Rowlett, Texas 75088

Facsimile 541-541-7116

Telephone 972-412-4715

Facsimile 972-412-4716

MODEL 50.5

WIND SENSOR

OPERATION MANUAL

Document No. 50.5-9800

Met One

Instruments

Содержание 50.5

Страница 1: ...es Service Grants Pass Oregon 97526 3206 Main St Suite 106 Telephone 541 471 7111 Rowlett Texas 75088 Facsimile 541 541 7116 Telephone 972 412 4715 Facsimile 972 412 4716 MODEL 50 5 WIND SENSOR OPERAT...

Страница 2: ...ress written permission of Met One Instruments Inc Technical Support Should you require support please consult your printed documentation to resolve your problem If you are still experiencing difficul...

Страница 3: ...eferring to the packing list check for shortages Any claims for damages should be filed promptly with the carrier The sensor is a precision electromechanical transducer Always handle it with care exer...

Страница 4: ...in which the airflow is disturbed by the building This is usually 1 5 times the height of the building above the roof so that it is out of the wake of the obstruction This is not a good practice howev...

Страница 5: ...osition as the north side of the sensor Before orienting the sensor ensure that it is vertical and adjust the cross arm as necessary Orientation of the sensor is then performed with the fixture instal...

Страница 6: ...ny time Simply remove the sensor The alignment bushing remains properly oriented in the fitting 2 6 EXTERNAL HEATER The Optional External Heater provides de icing for the sensor arms and prevents the...

Страница 7: ...50 5 9800 Rev C Page 7 Figure 2 3 50 5 Wind Sensor Components...

Страница 8: ...50 5 9800 Rev C Page 8 Figure 2 4 Alignment of Sensor to True North...

Страница 9: ...signal common disconnect it because it will short out the RS 232 transmitter No damage will occur to the circuit but the 50 5 current consumption will increase by 20 mA If you have a factory standard...

Страница 10: ...Appendix D The RS 232 output occurs every second in the format S sss s D ddd cr lf where sss s is the wind speed value up to 999 9 and the direction ddd up to a value of 360 RS 232 output is at 9600 b...

Страница 11: ...that the sensor output is matched to the electronics it is recommended that a zero wind condition be simulated Place a plastic bag over the sensor array using care to not contact or block the pathway...

Страница 12: ...based on the normal scaling of the specific sensor Use the following tables as a quick reference guide Use these tables for Sonics with serial numbers starting from B4323 or firmware V2 30 and greate...

Страница 13: ...r arm assembly and cable connections Inspect all transducers to make sure that they are securely fastened Schedule is based on average to adverse environments 4 2 TROUBLESHOOTING Symptom Probable Caus...

Страница 14: ...nd of a sound path to the other separated by distance d can be written as follows Schotland 1955 where V is the total velocity Vd and Vn are velocity components in the directions parallel and normal t...

Страница 15: ...mple period Sonic frequency 200 KHz Output Signals Wind speed voltage Programmable from 0 0 to 5 0 VDC Wind direction voltage Programmable from 0 0 to 5 0 VDC Standard Serial Output RS 232 Factory Ser...

Страница 16: ...50 5 9800 Rev C Page 16 50 5 Wind Sensor Outline Dimensions...

Страница 17: ...ber of degrees between True North and Magnetic North Magnetic declination for a specific site can be obtained from a USGS topographic map pilots maps local airport or through a computer service offere...

Страница 18: ...e internet or can be accessed by modem using any common terminal program GEOMAG is a resource that can be accessed by telephone or the Internet Telnet connection GEOMAG is accessed by calling 1 800 35...

Страница 19: ...rees this would be 17 3 degrees As shown in Figure 1 the declination for Oregon is east so True North for this site is 360 17 3 or 342 7 degrees The annual change is 2 4 minutes In this case a value 3...

Страница 20: ...50 5 9800 Rev C Page 20 APPENDIX B WIND SENSOR MOUNTING OPTIONS APPENDIX C TOWER 193 MOUNTING BOOM 073B SHIELD TYPICAL HORIZONTAL MOUNTING TOP OF TOWER TYPICAL VERTICAL MOUNTING WITH 191 6 CROSS ARM...

Страница 21: ...50 5 9800 Rev C Page 21 HEATER CONFIGURATION AND WIRING...

Страница 22: ...the command string terminated with a carriage return and line feed 0x0A Data string requirements are described with each command The default RS 232 configuration is 9600 8 N 1 The command set is desc...

Страница 23: ...00 Baud 3 4800 Baud 4 9600 Baud 5 19200 Baud Baud rate change takes affect after turning the power off and then back on This command is not available in the SDI 12 mode SN Serial Number Read the unit...

Страница 24: ...onic temperature RS 232 output Where x is 0 to disable the sonic temperature RS 232 output VD Full Scale Analog Output Voltage for Wind Direction Set the full scale analog output voltage for the full...

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