DR. ALFRED MULLER AE400 매뉴얼 - 페이지 6

{카테고리_이름} DR. ALFRED MULLER AE400에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. DR. ALFRED MULLER AE400 7 페이지. Portable anemometer, optional with telescopic mast

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METEOROLOGISCHE INSTRUMENTE KG

Instructions for

1. Putting into Operation and Adjusting of the Wind Direction Sensor

Bring the tripod of the mast in a proper position and fix the clamp screw. Mount the cross arm

and wind sensors on the not extended mast, insert the sensor cable plug (s) into the display

socket (s) and switch the display on. The adjusting of the direction sensor to the north can be

carried out as follows.

a. Look for a mark in north of your position by using the compass.

b. Unlock the clamp screw of the adjusting ring and the fixingscrew of the sensor.

c. Turn the wind vane in direction to the chosen mark

d. Turn the body of the sensor till the display shows 360°

e. Tighten the fixing screw of the sensor and the clamp screw of the adjusting ring.

Now the wind sensors can be brought to its measuring level by pulling out the tubes of the

mast one after the other and fix them with the clamp rings. If necessary the mast can be

stabilised by span rope's.

2. Recharging the Ni MH accumulators

For recharging the accumulators you have to connect the power pack to the display. The

display can either be switched on or of during recharging of the accumulators. With display

switched off, the charging time will take approx. 14 h, with display switched on it will take

approx. 20 h.

3. Replacing of the accumulators

After some years the accumulators will be exhausted and have to be replaced. First switch off

the display and put it on the table with the rear side showing upwards, then remove the four

screws and the back carefully. Remove the plug connector from the accumulator holder and

remove the accumulators from the accumulator holder. Do not throw the accumulators into

the domestic waste. Replace the accumulators by new ones, connect the plug connector to the

battery holder and fix the back to the housing. Fix the back by means of the four screws.

Please be aware that new accumulators are not fully charged; their full capacity will only be

reached after a few charging and discharging cycles.

4. Re-adjusting of wind speed on the Display AE402-D

After many year's operation it can become necessary to readjust the speed display. To do that,

you have to use an oscillator with an exact frequency of 200 Hz and a pulse duty factor of 0.5 and

an open collector output, which corresponds to a wind speed of 50 m/s = 97.2 kn. .

The adjusting has to be done as follows:

a. Remove the back of the display (as to replace the accumulators) and the two mantel

pieces.

b. Connect the oscillator output to pin 4 and 5 of the sensor connector.

c. Switch the display on and to "kn". and "inst" and put the display in its typical position in

front of you on a table.

Now you can turn at the potentiometer (positioned between lamp 350° and lamp 360°) till the

display shows 97.2 kn.

DR. ALFRED MÜLLER

R. FUESS