ATP Electronics ET-955 User manual

User Manual
Professional Anemometer
Please read this user manual thoroughly before using
this unit and keep it for your future reference.

Contents
1. Safety ..................................................................1
2. Introduction..........................................................1
3. Specifications ......................................................2
4. Meter Description................................................3
5. LCD Display Description .....................................5
6. Operating Instructions.........................................6
7. Notes ...................................................................9
8. Accessories .........................................................9

1. Safety
Read the following safety information carefully
before
attempting to operate the meter.
Use the meter only as specified in this manual; otherwise,
the warranty may be invalidated.
یEnvironment conditions:
RH 90 ˁ˄ Non-Condensation ˅
Operating Temperature: -10°C  60°C
ی
Maintenance
Repairs or servicing should only be performed by
ATP
Instrumentation Ltd.
Cleaning: Wipe the unit with a dry soft cloth. Do not use
abrasives or solvents on this instrument.
یSafety Symbol
Complies with
EMC
2. Introduction
The Anemometer is designed for measuring air velocity,
air
flow and temperature. 55mm high contrast easy-read backlit
LCD display with function indicators for air velocity,
temperature and air velocity level, shown at the same
time.
1

3. Specifications
Circuit based on fast and high accurate MCU
design
Display 55mm Hi-Contrast LCD with Backlight
Sampling time 1 time per second
Temperature measuring High accuracy NTC resistance
Temperature range -30
Ԩ
60
Ԩ
/ -22
Ԭ
140
Ԭ
Temperature accuracy ±1.5
Ԩ
/±2.7
Ԭ
Air velocity range 0.3m/s 45m/s
Operation Temperature -10
Ԩ
60
Ԩ
/14
Ԭ
140
Ԭ
Operating Humidity 90ˁRH˄Non-condensation˅
Storage Temperature -10
Ԩ
60
Ԩ
/14
Ԭ
140
Ԭ
Air velocity level
indication
level 1-12 by analog bar-graph, level 12
above by digits
Air Velocity accuracy ±3% ±0.1
Measurem ent average 30 points average for air flow
Maximum / Minimum MAX/MIN
Reading freezing Hold
Area set 0.001 9999 ΃˄0.0019999ft²)
Pow er Supply
1x 9V battery with type of 006Pǃ
NEDA1604 or IEC6F22
Auto power off After approx..15 minutes of inactivity
Resolution
m/s:0.01ǃkm/h:0.1ǃft/min:1ǃknots:0.1
mph:0.1ǃcmm:0.001ǃcfm:0.001
Dimension(L*W *H) 185 x 66 x 33mm
W eight 311g
2

4. Meter Description

4
ᬅAir Velocity
Sensor
ᬆSensor
Interface
ᬇLCD
Display
ᬈSET
Button
ᬉBacklight
Button
ᬊHOLD Button
ᬋVelocity Units
Selection/DOWN
ᬌPower
ON/OFF
ᬍ
MAX/MIN
ᬎ
AVG/UP
ᬏTemperature
Units
ᬐBattery
Cover
ᬑ¼” Tripod
Bush

5
5. LCD Display Description
ᬅBattery Power
Indication
ᬆAuto Power OFF
icon
ᬇMeasuring temperature
readings
ᬈTemperature
units
ᬉAir Velocity
Units:
m/s ˈ km/h ˈ ft/min ˈ
knots (nautical miles per
hour),
MPH
ᬊAir Velocity readings
ᬋAir flow & Area
units
Air flow: CMM (cubic meter per minute), CFM (cubic
feet
per minute) × 100 (Displayed data x
100);
Area: m², ft²
ᬌHOLD
Icon
ᬍMAX/MIN
Icon
ᬎAVG
Icon
ᬏAir Velocity level
indication
ᬐAnalog bar-graph indication for air velocity
level

6
6. Operating Instructions
(1) Open battery cover and install a 9-volt battery in
the
battery compartment.
(2) Power ON˖To turn the meter on, press the " "
button
for 1 second until the LCD is lit, then release the button.
(3) Power OFF˖To turn the meter off, press and hold
the
" " button for approx. 3 seconds until the LCD is
switched
off, then release the button.
(4) Backlight˖After turning the meter on, momentarily
press
"
" button, the backlight will turn on/off. It will
automatically turn off after approx. 30 seconds of inactivity.
(5) Units selection: After enter measuring mode, press
“ ”
button to select desired
units.
(6) HOLD: Press “ ” button one time, “HOLD” icon
will
appear on LCD, which indicates the reading is frozen. Press
the button again to exit HOLD mode.

7
(7) MAX/MIN: Press " " button one time until "MAX"
icon
appears on the LCD to view the current MAX reading; press
the button again, "MIN" icon will appear to view the current
MIN reading. To exit the MAX/MIN mode, press the
" "
button again.
(8) AVG Button: Press “ ” button one time, ‘AVG’
will
appear on LCD and the meter will enter the average
measuring mode. The average reading of the latest 30
records will be displayed on the LCD.
(9) Temperature Units selection: Press" "button to
select Ԩor
Ԭ .
(10) Area Units Set: Press ‘ ’ button and then power
the
meter on, release ‘ ’ button when LCD displays, at the
time the display will show as following (Note: the area units
can be set by
button) ˖

8
Set the area units as square meter (fig. as
above)
If the set area is above 9999 square meters, the actual
area
= displayed data
x100
Set the area units as square feet (fig. as
above)
If the set area is above 9999 square feet, the actual area =
displayed data
x100

9
7. Notes
(1) This meter has already been calibrated before delivery.
(2) Repairs or servicing should only be performed by ATP
Instrumentation Ltd.
(3) Remove the battery when the meter is to be stored for
long periods of time to avoid battery leakage.
8. Accessories
یUser
manual
ی9V
battery
یTripod
(Optional)

10
ATP Instrumentation Ltd
Tournament Way Ashby-
de-la-Zouch
Leicestershire
LE65 2UU
Sales: 01530 566 800 [e-mail]
Repair and Calibration: 01530 566 804 [e-mail]
www.atp-instrumentation.co.uk