Sper scientific 840003 Bedienungsanleitung

840003 Anemometer/

Thermometer measures both

air speed and temperature

in a light weight, compact

unit. Measures air velocity

in 5 scales: m/s, km/hr, mile/

hr, knots, or ft/min, as well

as temperature in ºC or ºF.

Other features include hold,

max/min, a USB computer

interface, auto power o󰀨, low

battery indicator, and a large

LCD with dual display and

audible “beeps” when buttons

are pressed.

Anemometer/Thermometer

840003

OPERATING INSTRUCTIONS

Measuring Air Velocity

1. Press the POWER button to turn the meter on.

The full display appears briey.

2. The unit is ready for use when “vel” (velocity) and

the ambient temperature are displayed.

3. Place the unit in front of the air source.

The measurement is displayed.

4. Press the SCALE button to switch units of measure:

ft/m, mile/hr, or knots in the US mode, and m/s, km/hr,

or knots in the metric mode.

5. For measuring air velocity in di󰀩cult to reach areas,

press the HOLD button during the reading.

This “freezes” the measurement on the display.

Press the HOLD button again to exit this feature.

Continuous Moving Average

(displayed for up to 2 hours provided the Automatic Shut

O feature is disabled)

1. Press the POWER button to turn the meter on.

2. Place the unit in front of the air source.

3. Press the MAX/MIN button. The LCD displays “AVG”

and the moving average, with updates every second.

Max/Min/Average (Single Point)

1. Press the POWER button to turn the meter on.

2. Place the unit in front of the air source.

3. Press the MAX/MIN button to record the readings.

4. Press the HOLD button before moving the meter

away from the air source.

5. Press the MAX/MIN button twice to display the

minimum velocity. “MIN” is displayed.

6. Press the MAX/MIN button again to display the

maximum velocity. “MAX” is displayed.

7. Press the MAX/MIN button again to display the

average velocity. “AVG” is displayed.

8. To clear the readings, either turn o󰀨 the unit or press

the MAX/MIN button until the unit beeps twice.

Air Velocity Average (Multi-Point)

1. Press the POWER button to turn the meter on.

2. Place the unit at the rst point to be measured.

3. Press the HOLD button to store the rst measurement.

The unit will beep once and display “HOLD.”

4. Press the MAX/MIN button. The unit will beep once

and a digit from the one to eight will be displayed.

This represents the point being recorded. Repeat the

process up to eight times.

5. Once all measurements have been recorded, press

the AVERAGE button to display the average air

velocity and the number of points measured.

Default Settings (US/Metric and Baud Rate)

1. Turn on the meter by pressing both the POWER

and the AVERAGE buttons.

2. Release the POWER button rst. Release the

AVERAGE button when “Ft/min” “M/s” “°F” and

“°C” appear on the LCD.

3. Either “Ft/m” and “°F” or “M/s” and “°C” will be

displayed. To switch modes, press the HOLD button

for metric, or the AVERAGE button for US settings.

4. Save the setting by pressing the MAX/MIN button.

“S” will display.

5. Press the HOLD button to continue to the baud

rate selection.

6. Set the baud rate required by your software’s

instructions. For 840052, make sure that the software

and the meter are both set to 2400 baud rate.

7. Press the AVERAGE button to select 2400, or the

HOLD button for 1200.

8. To save the settings, press the MAX/MIN button.

When “S” is displayed, press the HOLD button to exit

this function.

USBCONNECTION(OPTIONALCABLEREQUIRED)

Plug the 3.5mm cable jack into the meter’s USB output

and the 9-pin connector into the computer’s COM port.

Press the POWER button to turn the meter on.

Format: 1 Stop Bit, 8 Data bits, TXXXX.XF, VXXXXFTM,

TXXX.XC, VXXXXMPS

AUTOMATIC SHUT OFF

After about 15 minutes without activity, the meter will

beep 3 times then shut o󰀨 to preserve battery life.

To disable:

1. With the unit turned o󰀨, simultaneously press

the POWER and HOLD buttons.

2. Release the POWER button.

3. When “n” displays, release the HOLD button.

The meter will remain on until the POWER button

is pressed again.

BATTERY REPLACEMENT

Replace the 9V battery when “LOW BATTERY” is

displayed. In-spec measurements may be made for

several hours after the low battery indicator appears.

PRECAUTIONS

• DO NOT use the meter in air velocities that exceed

the specied range.

• DO NOT use the meter at or near hurricane wind

velocities.

• DO NOT use the meter in air that exceed the

operating temperature range.

SPECIFICATIONS

Range Resolution Accuracy

80 to 5900 ft/min 1

±3%

0.4 to 30 m/sec 0.01

0.9 to 68 mil/hr

0.10.8 to 58 knots

1.4 to 108 km/hr

-10 to 50°C 0.1 ±0.6°C

+14 to 122°F ±1.0°F

Battery Life: Apx 100 hrs

Max. Reading: 9999

Sampling Time:

Meter = 1 second; USB output = every 2 sec.

Dimensions: 7¼" × 3" × 1¾" (184 × 76 × 44 mm)

Weight: 7 oz (198 g)

WARRANTY

Sper Scientic warrants this product against defects

in materials and workmanship for period of ve (5)

years from the date of purchase and agrees to repair

or replace any defective unit without charge. If your

model has since been discontinued, an equivalent

Sper Scientic product will be substituted, if available.

This warranty does not cover probes, batteries, battery

leakage, or damage resulting from accident, tampering,

misuse, or abuse of the product. Opening the meter to

expose its electronics will void the warranty.

To obtain warranty service, ship the unit postage

prepaid to:

SPER SCIENTIFIC LTD.

8281 E. Evans Rd, Suite #103

Scottsdale, AZ 85260

The defective unit must be accompanied by a

description of the problem and your return address.

within 10 days.

8/16/2017

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