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Comptus A70-DL0, Instruction Manual

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Comptus A70-DL0 Instruction Manual Download Page 5

5

Figure 5

Direction Vane Mounting Diagram

Summary of Contents for A70-DL0

Page 1: ...1 INSTRUCTION MANUAL for WIND DIRECTION TRANSMITTER MODELA70 DL0 DOCUMENT 1147 Version K Model A70 DL __XX____ 360o Range ______ 540o Range A75 302 Wind Vane Track Mounted Transmitter...

Page 2: ...he same wire pair Two wind direction ranges 0 360 o and 0 540 o are available The 540 o range is recom mended if a mechanical chart recorder will record wind direction This range reduces transitions f...

Page 3: ...nics 1 Sensor See Separate Specs Loop Resistance Excit Voltage 9 X 50 ohms Max Temperature Range Electronics 0 o 60 o C standard 20 o 70 o C extended Sensor See Separate Specs Dimensions NEMA 12 Box 3...

Page 4: ...verts the output voltage from the wind vane which is proportional to azimuth to a dc current The current varies linearly from 4 ma at zero degrees azimuth to 20 ma at 360 degrees azimuth The Transmitt...

Page 5: ...5 Figure 5 Direction Vane Mounting Diagram...

Page 6: ...6 Figure 6 Transmitter Connection Diagram...

Page 7: ...7 Figure 7 MultipleTransmitters with One PowerSupply...

Page 8: ...Excitation Voltage R V 10 Vdc X 50 The resistance of various gages of copper wire is given in Table 1 Table 1 Wire Gage Resistance in AWG Ohms per foot 12 0016 14 0026 16 0041 18 0065 20 0103 22 0165...

Page 9: ...forty or fifty feet high a tower commonly used for TV antenna support consisting of concentric pieces oftubingapproximatelytenfeetlong guyedateach section issuitable Abovethisheightself supporting org...

Page 10: ...10 Figure 9 Poor Wind Sensor Placement Over Vertical Wall Figure 10 NorthAlignment Mark...

Page 11: ...bottom of the wind vane housing Attach the sensor cable to these studs being careful to tighten only the outer 4 hex nut to 3 inch pounds torque If the inner nut is loosened or the nuts are tightened...

Page 12: ...rmula 2 Figure 11 Graph ofWind DirectionTransfer Function 360o Range 0 180 360 4 12 20 Loop Current in mA Wind Azimuth Degrees N E S W N 540 Degree Wind Direction Scale The wind direction may be deter...

Page 13: ...0 0 4 1 2 2 0 Voltage Loop Current milliamperes ICING Under some conditions operation of the wind vane will be degraded by the presence of ice This most often occurs as the result of freezing rain The...

Page 14: ...the wind direction gain WIND DIRECTION TRANSMITTER The adjustments may be sealed with electronic grade silicon rubber to prevent tampering by unauthorized personnel 1 Connect a jumper between terminal...

Page 15: ...is fuel in the tank before replac ing the engine If the electronic equipment doesn t function verify that it has power and is turned on Systems containing parts which can be quickly interchanged are...

Page 16: ...ion is open or the signal terminal is short circuited to the positive excitation terminal If the output is constantly just East of North then the positive excitation terminal is open or the signal ter...

Page 17: ...resistance between the direction vane signal lead and either of the excitation terminals should be less than 10000 10K ohms If the resistance values differ radically from the above then the vane or t...

Page 18: ...aced removed or otherwise changed d the damage has not been caused by acts of nature including windstorm and hail beyond those specified as within the range of operating conditions e the damage has no...

Page 19: ...em 4 If the equipment is packaged in a plastic case wrapitinaluminumfoilorotherconductive material Thiswillprotectitfromstaticelectricity aswellaspreventthepackingmaterialfrom jammingmechanicalparts s...

Page 20: ...20 WWW COMPTUS COM Phone 603 726 7500 Fax 603 726 7502...

Page 21: ...1 Protective boot _______ 1 Instruction Manual _______ 2 Hose Clamps _______ 1 Certificate of Calibration _______ IMPORTANT Please check your order on receipt to be certain all listed accessories are...

Page 22: ...22 WWW COMPTUS COM Phone 603 726 7500 Fax 603 726 7502...

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