General Mini Airflow DAF3010 User manual

99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com

Mode d'emploi __________________________________________________________________________15 – 26
Manual de instrucciones __________________________________________________________________27 – 38
Contact Information _____________________________________________________________________ 40
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Index
Owner's Instructions_______________________________________________________________________3 – 14
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Manual de instrucciones __________________________________________________________________27 – 38
Contact Information _____________________________________________________________________ 40
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15 – 26
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I. GENERAL INFORMATION
You have just acquired a piece of high precision equipment which has been created using the most modern technology. It has been designed to
stand up to intensive use. However, in order to maintain its appearance and its precision, we recommend that you treat it with care and pay
careful attention to these operating instructions.
The GENERAL® Mini Airflow is fitted with an impeller and with sensors which allow it to carry out measurements in the open air.
It will give you all the information essential for your open air activities such as hang-gliding, rambling, climbing or water sports. It will give you the
instant wind speed and the maximum wind speed (DAF3010, 3300, 4000), ambient temperature and wind chill temperature (3010, 3300, 4000),
an electronic compass (DAF3300, 4000) as well as altitude, pressure, and trends in the weather (DAF4000).
The GENERAL® Mini Airflow range has been designed to withstand short-term immersion in water at a depth of up to one metre.
IMPORTANT !
This instrument is designed as an aid to users who are in an open air environment, but IT CANNOT replace advice and warnings from the local
weather station. This means that you should regularly check and compare the measurements provided by your instrument with the information
put out by the weather station.
Open-air climatic conditions can sometimes change quite dramatically and this can happen very quickly indeed. Sunny weather can, for
example, change to thunderstorm conditions in the space of half an hour and sometimes less. You should therefore always follow basic safety
rules whenever you undertake open air activity.
GENERAL TOOLS® can in no way be held responsible for any consequences, direct or indirect, or for any prejudice, which might result from
the use of this instrument.
Technical specifications:
Size: 41 x 93 x 17 mm
Weight : 52 gr (DAF3010, 3300), 53 gr (DAF4000)
Operational temperatures : -30°C to +60°C
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II. MAINTENANCE DAF3010, DAF3300, DAF4000
The design and manufacture of this instrument have been the subject of a great deal of care. In order to make best use of the proposed
functions you are advised to use the instrument in accordance with the following observations :
•Avoid at all costs items such as hair, thread, sand and other dust materials getting into the impeller, as they could cause defective
rotation of the impeller and therefore a loss of precision. If a hair or a piece of thread should manage to get into the impeller, extract it
gently using tweezers; in the case of dust or sand, you can run clean water over the impeller.
•Avoid exposing the instrument to extreme climatic conditions for over-long periods. While it uses components resistant to such
temperatures, we recommend that you do not expose your instrument to strong sources of heat, for example under the windscreen of
a vehicle.
•Avoid careless use or sharp impacts.
•DO NOT EXPOSE the instrument to powerful chemicals. Such products could damage it.
III. Switching on DAF3010, DAF3300, DAF4000
To switch on your GENERAL® Mini Airflow, all that you need to is press briefly on the button(represented by on the diagram below). The
instrument switches on and displays the software version and the instrument model (see fig. D0.0 on the diagram below), after which the
instrument moves into the mode for measuring the current wind speed or to the last mode displayed before the instrument was
switched off.

IV. Switching off DAF3010, DAF3300, DAF4000
Switching off automatically (Auto-off):
Your GENERAL
®
Mini Airflow goes off automatically 1 minute after the button was last pressed or after the wind was last measured. This means
that it does not stop while the impeller is still turning (more than 10 seconds).
Switching off manually :
In order to switch Mini Airflow off manually (valid in every mode), hold the button pressed down until it switches off, then release.
IMPORTANT ! Permanent operation possible :
Either at the time of the manual switching off by releasing the button during the flashing of the large digits, or at the time of automatic switching
off by pressing briefly on the button during the flashing.
During permanent operation, any pressure on the button returns Mini Airflow into automatic off mode.
Note : if the instrument is on permanently the battery discharges rapidly (400 to 500 hours according to the model).
VI. Battery DAF3010, DAF3300, DAF4000
Your GENERAL
®
Mini Airflow gets its power supply from a replaceable lithium battery 3V type CR2032. To change the battery:
IMPORTANT ! This operation must be carried out with care!
ANY DEFECTIVE MANIPULATION DURING THE REPLACEMENT OF THE BATTERY CAN CAUSE LASTING DAMAGE
TO YOUR INSTRUMENT. IN CASE OF DOUBT CONSULT A WATCH REPAIRER.
1. Unscrew the metal back (6 screws).
2. Unscrew the screw of the battery cover.
3. Gently remove the cover in order to extract the battery.
4. Put in the new battery observing the polarity (+ upwards), then screw back the battery cover. Make sure that the tiny tongue in the
centre of the top is raised so that it touches the metal back.
5. Before refitting the back make sure that the seal is clean and securely positioned in its slot.
6. Refit the back and the 6 screws.
Normal battery life :
DAF3010, DAF3300 :approximately 30,000 measurements of 1 minute (auto-off) and more than 20 years when off.
DAF4000 : without records : same as DAF3010, DAF3300.
with records : approximately 25,000 measurements of 1 minute (auto-off), but 7 years maximum when off.
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1. Backlight DAF3010, DAF3300, DAF4000
To get the backlight to light up keep the button pressed for 1 second and as soon as the backlight lights up, release the button. The backlight
remains illuminated for 3 seconds. If within the 5 seconds which follow you re-illuminate the backlight, it stays lit up for 15 seconds. Beyond
these 5 seconds, it lights up again for 3 seconds.
Note : the backlight lights up in the same way in all modes.
IMPORTANT : intensive use of the backlight reduces the life of the battery / consumption approximately 100 x greater than without
backlight.
2. Modes and mode changing DAF3010, DAF3300, DAF4000
Brief pressure on the button allows you to move to the following mode.
MODES :
DAF3010 (3 modes) DAF3300 (4 modes) DAF4000 (9 modes)
1. wind + max. wind 1. wind + max. wind 1. wind + max. wind
2. wind +temperature 2. wind +temperature 2. wind +temperature
3. wind + wind chill temperature 3. wind + wind chill temperature 3. wind + wind chill temperature
4. wind + compass 4. wind + compass
5. wind + altitude and max. altitude
6. wind + relative and absolute pressure
7. record of pressure trends
8. record of relative pressure
9. record of altitude
Please refer to the following sections to consult the functions available in each mode.
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3. Mode for measuring the instant wind speed with maximum DAF3010, DAF3300, DAF4000
Choice of unit of measurement :
By keeping the button pressed for approximately 4 seconds, the units start to go past. You can choose between the
following units : km/h (kilometres per hour), mph (miles per hour), knots, m/s (metres per second), and fps (feet per
second). When the unit of your choice appears, release the button and the unit of measurement is thereby selected.
Measurement of speed :
For the measurement to be as exact as possible it is necessary to align the instrument along the axis of the wind.
Precision: +/- 3 %
Measuring range: from 0 to 150 km/h (42 m/s, 81 knots, 93 mph, 136 fps)
Measuring cycle: 2 measurements per second
Display:
The display of the current speed is done on the large digits and the maximum speed reached on the small digits with the indication .
Resolution : to one decimal place up to 99.9, then in whole units.
Deletion of the maximum :
The maximum is retained even when the instrument is off. In order to reset it to zero keep the button pressed for at least 2 seconds, then
release it.
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4. Mode for measuring the instant wind speed with ambient temperature DAF3010, DAF3300, DAF4000
Choice of unit of measurement :
By keeping the button pressed down for at least 2 seconds the 2 units start to go past. You have the possibility to
choose between : °C (degrees Celsius) and °F (degrees Fahrenheit) When the unit of your choice appears, release
the button and the unit of measurement is thereby selected.
Measuring ambient temperature :
Note : the temperature sensor is integrated with the metal back of the casing, and therefore it is the temperature of
the back of the casing which is displayed. This special feature makes it possible to measure very accurately the
temperature of fluids such as :
f water (springs, streams, etc.) by immersing the instrument several centimetres;
f surfaces (ground, metal parts, refrigerator interiors etc) by laying as closely as poss ble the back of the instrument on the surface to be
measured;
f ambient air, either by allowing the instrument to reach the air temperature, which can take several minutes, or even several dozens of
minutes according to the wind speed (avoid direct sun rays and contact of the back of the casing with your fingers). Otherwise, to get a
rapid and precise measurement, but the back of the casing into contact with an object which is the same temperature as the air (vehicle
bodywork, metal barrier, smooth walls etc.) avoiding surfaces in dark colours and exposed to sunlight).
Measuring range of the sensor : from -50°C to100°C
Measuring cycle: one measurement every 0.5 seconds
Display:
The display of the instant wind speed is done on the large digits while the ambient temperature is displayed on the small digits.
Resolution (temperature) : to the tenth of a degree
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5. Mode for measuring the current wind speed with the wind chill temperature DAF3010, DAF3300, DAF4000
Low temperatures present a danger to the human body and this danger is aggravated by the speed of the wind. The
Mini Airflow meters show immediately the temperature felt by the body and warnsof risks of frostbite and
hypothermia.
WHICH MEANS : The wind chill factor is calculated on the basis of ambient temperature and wind speed. In the event
of wind, it gives an indication of the loss of heat by the body if the temperature is less than 10°C. This is the formula
which was adopted in January 2003 by the United States Federal Office for Meteorological Coordination with the
Meteorological Service of Canada (MSC), the US Department of Defence (DoD) and the United States National
Oceanic and Atmospheric Administration (NOAA).
Example: an ambient temperature of 0°C and a wind of 30 km/h act on your body as if the temperature were -7.8°C !
Choice of the unit of measurement for temperature :
See section 4, choice of the unit of measurement.
Display:
The display of the instant wind speed is made on the large digits and the wind chill temperature on the small digits with the indication .
Resolution (temperature) : to the tenth of a degree
Measuring cycle: 2 measurements per second
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7. Mode for measuring instant wind speed with current altitude DAF4000
IMPORTANT! This instrument calculates altitude by using air pressure. It is therefore quite normal for the
altitude to change when the air pressure changes. For this reason the instrument needs to be calibrated as often
as possible.
Choice of the unit :
By keeping the button pressed for approximately 4 seconds, the units start to go past. You can choose between the
following units : m(metres) and ft (feet). When the unit of your choice appears, release the button, and the unit of
measurement is thereby validated and the instrument returns to the mode of measuring the instant wind speed with
display of the altitude.
Display of the maximum altitude :
Hold the button pressed down for approximately 2 seconds and at the moment when the indication is displayed, release the
button; in this way the instrument goes into the mode for measuring the instant wind speed with display of the maximum altitude.
In order to quit this mode press once on the button. The instrument then returns to the wind/altitude mode.
Calibration of the altitude :
Hold the button pressed down for approximately 3 seconds, and when appears in the large digits, release. Hold the button
pressed down to increase the figure for the altitude in steps of 1 unit. To reduce the same, release then once again hold the
button pressed down.
A brief pressure on the button validates the new altitude.
Deletion of the maximum :
The maximum is retained even when the instrument is off. To delete the figure for the maximum, hold the button pressed down for
approximately 2 seconds, then release it. This operation should be carried out after the mode of display of the max. altitude.
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8. Mode for measuring the wind speed with display of relative and absolute pressure DAF4000
WHICH MEANS : The instrument offers 2 modes for displaying pressure: QFE pressure and QNH pressure. These two abbreviations (QFE and
QNH) are taken from the famous “Q” code. This code was instituted by the London conference of 1912. It is made up of a list of three letter
indicators, valid for all the countries of the world. Intended mainly for telegraphic and radio-telegraphy transmissions (in Morse) it is made up of
a list of abbreviations, using three letters to summarise without ambiguity phrases, questions or responses which would take too long to
formulate in clear text, thus eliminating the risks of errors arising out transmission, reception, language and interpretation.
The “Q” is still widely used in our day by ships and amateur radio enthusiasts. It is still official usage in radio telephony. The aeronautical world
does not use all of it, but regularly uses part of it.
CODE MEANING
QFE Atmospheric pressure at ground level, also known as absolute pressure.
QNH Atmospheric pressure obtained by calculation at sea level in standard atmospheric conditions,
also known as relative pressure.
This is the pressure mentioned in meteorological bulletins or on the television.
Choice of the unit :
I
f the button is kept pressed down for at least 4 seconds the units start to pass by, and you have the possibility of choosing between the
following units: hPa (hecto Pascals) and inHg (inches of mercury). When the unit of your choice appears, release the button. This validates the
unit of measurement and the instrument goes back to the mode wind / relative pressure (QNH).
Display of absolute pressure (QFE) :
Keep the button pressed down for approximately 2 seconds and at the very moment when the indication (QFE) is
displayed in the large digits, release it. The instrument then goes into the mode for displaying absolute pressure. To quit this
mode, press once on the button, and the instrument returns to the mode wind / relative pressure (QNH).
Calibration of relative pressure (QNH) :
Hold the button pressed down for approximately 3 seconds, then release it at the moment when is displayed on the large
digits. Then the adjustment (increase/reduction) is carried out in the same way as for the calibration of altitude, see section 7
(altitude cal bration).
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Comments:
7. If QNH figure is steady (is not flashing) this indicates the current relative pressure (QNH), credible because deduced from a
meteorologically slow variation.
8. The QNH sign flashes if this pressure has changed since the last cal bration.
9. If the QNH figure is flashing, it indicates the QNH pressure entered at the last calibration.
10.A rise in altitude or a meteorological variation when the recording is not active makes the QNH figure flash.
11. Cal bration of the QNH or of the altitude (known datum) makes it possible to re-adjust the Mini Airflow in relation to the measured ambient
pressure. This varies continually according to the altitude and the current meteorological conditions.
12. The only reference for the Mini Airflow is the air pressure which it is measuring, from which it deduces the altitude. Any variations in this
pressure makes the altitude change : 9 metres per hPa a low altitudes, 14 metres at 5,000 metres, and this is why it is necessary to
calibrate as often as possible to maintain a cred ble display (even airline pilots have this to comply with!).
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TThis is valid if the
M
Valid if the M
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9. Recording modes DAP4000
WHICH MEANS : The three recording modes operate in the same way and are connected. They display under
different forms one of the 48 pressure measurements stored each hour. By default : 24 h are displayed.
The record stores just the pressure on the sensor, the QNH or the altitude displayed is calculated, depending on the
current calibration.
Trend : This is the variation in pressure over the last 24 hours (or 48 hours, or 1 hour etc.). This is valid if the
Mini Airflow is in the same place (same altitude). A negative figure indicates a drop in pressure (arrival of a
depression), a positive figure, an increase (anticyclone). Pressure naturally varies during the day, and the
weather trend is more accurate at 24 hours or 48 hours (same time of the day).
QNH : This is the relative pressure at 24 hours ago (or 48 hours, etc.). Valid if the Mini Airflow is at the same place
and is recal brated.
Altitude : If you set off for a mountain walk or go paragliding, you can check the altitudes achieved hour by hour. The
altitude will be accurate if you force the QNH calibration of the Mini Airflow on the weather pressure that was
present when you recorded.
Display of a particular moment in the record :
Example: you want to know the trend, the QNH or the altitude 12 hours ago. Keep the button pressed down, then when 12 h
appears on the large digits, release it.

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DAF3010, DAF3300, DAF4000 User’s Manual
Specifications subject to change without notice
NOTICE - NOT RESPONSIBLE FOR T POGRAPHICAL ERRORS.
©2014 GENERAL TOOLS & INSTRUMENTS
MAN# DAF3010, DAF3300, DAF4000
7/11/14
General Tools & Instruments
GeneralToolsNYC
99 Washington Street
Melrose, MA 02176
Phone [phone]
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com