SATO KEIRYOKI PC-51D User manual

Instruction Manual

No. 7650-00 Mini Anemometer

Model PC-51D

3-4, Kanda-kajicho, Chiyoda-ku, Tokyo 101-0045 Japan

URL: http://www.sksato.co.jp/english/

Introduction

Thank you for purchasing the Mini Anemometer PC-51D.

- This product is designed to measure wind velocity and temperature. Do not use it for

other purposes.

- Read this manual before use. Keep this manual in a safe place for future references.

Overview

The PC-51D is a compact and lightweight portable anemometer. It conveniently fits in the pocket,

and so can easily be carried for measuring outdoors, such as when mountain climbing, camping,

fishing, yachting, windsurfing, or gliding.

It is also ideal for on-site measurements, such as checking the wind velocity of air-conditioning or

measuring a wind velocity readily at a construction site.

Features

-Folding case

Folds to pocket-size when not in use.

- Auto power-off

The power is automatically turned off to conserve battery power if the device is not used for more

than 15 minutes.

- Easy reading

Holds the measured value.

- Display of mean and maximum values

The running mean value of wind velocity and maximum wind velocity are displayed.

- Various units of measurement

In addition to ordinary units such as m/s (meter/second), ft/min (feet/minute), knt (knot), and °C

or °F, the wind chill factor and Beaufort wind scale can be used.

Caution

-The temperature range of the PC-51D is –15 to 50°C (5 to 122°F). Never use the device outside

the specified temperature range. If used, faults may occur.

- If the device is used to measure wind velocity by holding it out of an automobile window while

driving, the wind flow will be faster due to the driving speed, thus making measurement

impossible (beyond the measurement range), and possibly damaging the vane (propeller).

Always use the device within the measurement range.

Names and Functions of Components

Main unit

①Vane (propeller) : Wind velocity is measured by monitoring the revolving vane.

②Temperature sensor : Temperature is measured by this thermistor-type sensor.

③LCD display : Displays measured values and the operating status of the device.

④ON/OFF/HOLD key : Pressing this key turns the power on or off. Pressing and holding the

key while the device is on holds (freezes) the readings.

⑤UNIT/MODE key

UNIT : Used to select the unit of wind velocity and temperature.

MODE : Used to select whether to display a mean value (AVG, AVG5,AVG10),

max value (MAX), or WCI value.

⑥Battery lid : This lid covers the coin cell battery (CR2032) compartment.

⑦Female thread for fixing a tripod

: Used to screw a tripod to the device.

⑧Case : Protects the vane (propeller) and the display panel.

⑨Strap mount : An accessory hand strap is fixed to this mount.

⑩Hook on the Main body : This hook is to pull and slide out the vane (propeller) and the LCD

display from the case.

LCD display panel

①Upper 7-segment display : Displays the measured wind velocity value.

②Lower 7-segment display : Displays the measured temperature value.

③Unit of measurement (wind velocity) : KNT, BF, FPM, MPH, MS, and KMH

④Unit of measurement (temperature) : °C, °F

⑤AVG : Lit while the mean value of 13 measurements is displayed.

⑥AVG5 : Lit while the running mean value of 5 measurements is displayed.

⑦AVG10 : Lit while the running mean value of 10 measurements is displayed.

⑧MAX : Lit while the maximum values of wind velocity and temperature are displayed.

⑨WCI : Lit while the wind chill factor is displayed.

2. Notes on Use

To ensure correct use of the device, observe the following.

- Do not drop the device or apply impact to it. PC-51D is a precision instrument.

- Do not use the device in a place exposed to direct sunlight or near heating equipment. Doing so

may result in deformation of the casing or malfunction of the device.

- Leaving this device inside a car under the full sun in a hot climate will cause it to become

extremely hot, possibly resulting in failure. Do not leave it in such hot places.

- Do not use the device in an environment where electrical noise is generated. Doing so may result

in unstable display or larger errors.

- Never disassemble or modify the device. Doing so may result in failure. For repair or calibration,

contact the store from which the device was purchased or our service network.

- Never use the device outside the permissible measurement range. Doing so may result in failure.

- Never allow the unit to become wet, as it is not waterproof.

- If the device is not going to be used for a long time, remove the battery. Otherwise, the battery

power will be drained and the battery fluid may leak, resulting in failure.

- Keep batteries out of reach of children. If you swallow a battery accidentally, consult a doctor

immediately.

- Do not dispose of the used battery in a fire.

- For environmental reasons, dispose of the used battery in compliance with local rules and

regulations.

- Do not wash or wipe the device with alcohol, thinner, or other organic solvents. If the device

becomes dirty, wipe it with a tightly-wrung towel or the like that has been dipped in warm water

with a neutral detergent.

3. Installing or Replacing the Battery

(1) Remove the battery lid by turning it clockwise (direction of the arrow on the lid) using a coin or

the like.

(2) When replacing the battery, take out the used battery.

(3) Insert the coin cell battery (CR2032) so that the positive terminal (+) is facing upward.

(4) Reinstall the battery lid in the reverse order of removal.

Caution

- If the display becomes weak or disappears during measurement, it indicates that the battery

power is insufficient. Replace the battery immediately with a new one (CR2032).

- Measurements while the battery power is insufficient may result in faulty operation.

4. Setting the Hand Strap

(1) Thread the thin loop at the end of the strap through the strap mount.

(2) Pass the strap back through the loop and pull it out to fasten the strap firmly.

5. Measuring Procedures

(1) Hold the hook on the main unit and take out the sensor and display panel from the case. The

case opens at angles of up to 180° at which a stopper prevents further opening. Do not forcibly

open it more than 180°.

(2) Select the unit of wind velocity and temperature.

Press the UNIT/MODE key while the device is turned off. Select a desired unit set from the

eight unit sets shown below. Each time this key is pressed, the unit set is cycled as follows.

When the desired unit set appears, wait for approximately 12 seconds and do not press any key

until the unit set is registered.

°C MS : meter per second °C KMH : Km per hour

°F KNT : knot °C KNT : knot

°F BF : Beaufort wind scale °C BF : Beaufort wind scale

°F FPM : feet per minute °F MPH : mile per hour

(3) Press the ON/OFF key to turn the power on. Make sure that the selected units of measurement

light on the display panel.

(4) Orient the probe in the direction of wind flow. Set the probe so that wind is flowing from the rear

surface of the probe (the serial number is on) to the front surface (the LCD is on).

(5) When the approximate direction of wind flow is determined, wait at least two seconds for the

measured values to stabilize before reading them.

(6) Upon completion of measurement, press the ON/OFF key to turn off the power.

If none of the function keys are pressed for approximately 20 minutes, the auto power-off

function will be activated, causing the power to shut off automatically. Make sure that the

operation interval will not exceed 20 minutes when continuous measurement is to be

performed.

Caution

- If the device is used in an atmosphere of high wind velocity (beyond the measurement range), or a

measurement is taken while holding the unit out of an automobile window while driving, the

vane (propeller) may be damaged. Do not use the device in such a manner.

- Measurement outside the specified measurement range is not guaranteed (see the accuracy

table). It may result in failure or damage of the device.

- To assure measurement accuracy, set the probe at right angles ±5º to the direction of wind

flow. The measurement accuracy will decrease if the angle exceeds ±5º.

MS KMH KNT

°C°C°FKNT

°CBF

°FBF

°CFPM

°FMPH

°F

6. Displaying the mean, maximum, and wind chill factor

By pressing the UNIT/MODE key while the device is turned on, the display mode of mean values,

maximum values, or WCI values can be selected. Each time the UNIT/MODE key is pressed, the

state will change as follows.

Displaying a mean value

(1) Press the ON/OFF key. Numeric values will appear on the display and measurement mode will

be invoked. The sample is measured every second.

(2) Press the UNIT/MODE key once so that “AVG” lights on the display panel. On the upper

7-segment section, the mean value of 13 measurements will be displayed.

(3) Press the UNIT/MODE key again so that “AVG5” lights on the display panel. On the upper

7-segment section, the running mean value of 5 measurements will be displayed.

(4) Press the UNIT/MODE key once again so that “AVG10” lights on the display panel. On the

upper 7-segment section, the running mean value of 10 measurements will be displayed.

(5) To return the device to standard measurement mode, keep pressing the UNIT/MODE key until

none of the characters on the lower left of the display panel are lit.

Displaying the maximum value

(1) Press the ON/OFF key. Numeric values will appear on the display and measurement mode will

be invoked.

(2) Keep pressing the UNIT/MODE key until “MAX” lights on the lower left of the display panel and

maximum value display mode is invoked.

(3) The maximum wind velocity and temperature value will be displayed and held on the

display (both wind velocity and temperature are held).

(4) To return the device to standard measurement mode, keep pressing the UNIT/MODE key until

none of the characters on the lower left of the display panel are lit.

UNITS/MODE Key

Normal measurement mode

None of characters are lit.

Mean value display

“AVG” is lit.

Wind chill factor display

“WCI”is lit.

Maximum value display

“MAX” is lit.

Display of the running mean

value of 10 measurements

“AVG10” is lit.

Display of the running mean

value of 5 measurements

“AVG5” is lit.

Displaying the wind chill factor

(1) Press the ON/OFF key. Numeric values will appear on the display and measurement mode will

be invoked.

(2) Keep pressing the UNIT/MODE key until “WCI” lights on the lower left of the display panel and

wind chill display mode is invoked.

(3) The wind chill factor will be calculated from the measured wind velocity and temperature, and

displayed.

(4) To return the device to standard measurement mode, press and hold the UNIT/MODE key until

none of the characters on the lower left of the display panel are lit.

7. Specifications

Product name

No. 7650-00 Mini Anemometer

Model

PC-51D

Sensing elements

Temperature : Thermistor

Wind velocity : Vane (propeller)

Operation ambient

Temperature: -15 to 50°C

R. Humidity : lower than 80%, no condensing

Power requirements

One CR2032 battery

Battery life

3VDC ( 400 hours (continuous operation)

Materials

Main unit : ABS resin

Vane : ABS resin

Frame for vane:ABS resin

Dimensions

144(W) x 47 (H) x 26(D) mm (unit can be folded into two),

Vane dia.:24 mm

Weight

about 95g (including a battery)

Standard

accessories

One CR2032 battery, hand strap, English manual

8. Measuring Range and Accuracy

Temperature

Unit

Measuring range

Resolution

Accuracy

°C: Celsius

-15.0 to 50.0

0.1

±1.0

ºF: Fahrenheit

5.0 to 122.0

0.1

±1.8

Wind Velocity

Unit

Measuring range

Resolution

Accuracy

m/s : meter per second

1.1 to 20.0

0.1

±3%F.S.

ft/min: feet per minute

217 to 3937

KNT : knot

2.1 to 38.8

0.1

KMH : Km per hour

4.0 to 72.0

0.1

MPH : mile per hour

2.5 to 44.7

0.1

BF : Beaufort wind scale

1 to 8

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