Fluke 65 Manual de usuario

Model 65 English Instruction Sheet

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Model 65

Infrared Thermometer

Instruction Sheet

Introduction

The Fluke Model 65 Infrared Thermometer (“the thermometer”) is

a noncontact thermometer with laser pointer. The thermometer

determines an object's surface temperature by measuring the

amount of infrared energy radiated by the surface.

Noncontact thermometers can be used to measure surface

temperatures that are unsuitable for traditional contact

measurement methods (such as moving objects, electrically live

surfaces, and difficult-to-reach objects).

Box Contents

Thermometer, holster, carrying case, 2 AA alkaline batteries (not

installed), Instruction Sheet, Quick Reference Card, and

Registration Card.

Contacting Fluke

To contact Fluke call:

1-888-993-5853 in USA and Canada

+31-402-678-200 in Europe

+81-3-3434-0181 Japan

+65-738-5655 Singapore

+1-425-356-5500 in other countries

Visit Fluke’s web site at: www.fluke.com.

PN 801818 (English) January 1999

Model 65 English Instruction Sheet

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WWarning

To avoid possible personal injury:

⇒Caution - performance of procedures other than

those specified herein may result in hazardous

light exposure.

⇒Do not stare into the laser beam or direct it

toward the eyes.

Caution

To avoid possible damage to the thermometer or

incorrect measurements:

⇒Do not drop the thermometer or subject it to

violent shocks.

⇒Do not operate the thermometer near large

electrical or magnetic fields.

⇒Do not touch the object with the thermometer.

⇒If the emissivity of the object is not 0.95, the

thermometer can indicate a temperature

different from the actual temperature. (See

"Emissivity.")

⇒Keep the thermometer away from direct

sunlight or a strong source of light, hot objects

(70 oC / 158 oF), high temperatures, high

humidity, or dust during use and storage.

⇒Do not apply sudden temperature changes to

the thermometer. Before taking measurements,

wait for the thermometer to return to a stable

temperature.

⇒Do not touch the focal lens.

⇒Condensation may form on the focal lens if the

thermometer moves quickly from a cold to a hot

environment. Before taking measurements, wait

for the condensation to dissipate.

Model 65 English Instruction Sheet

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Components

MIN

MAX

MEMORY

RECALL

°F

°C

Press 1 Second

SAVETEMPMEM

810

aab03f.eps

AFocal lens

BLaser aperture

CPushbuttons

DHolster

EDisplay

FLaser safety label

GBattery door release

HBatteries

IBacklight switch

JLaser switch

Model 65 English Instruction Sheet

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Pushbuttons

Pushbutton Description

GPress and hold Gto display the object’s surface

temperature. The thermometer clears any stored

maximum and minimum temperatures. The laser

pointer only activates if the laser switch is in the on

position.

While Gis pressed, the display shows HHHHH.

Release Gto stop measuring temperatures and

deactivate the laser. The display continues to show

the most recent temperature and Cfor 20

seconds. Then the display turns off.

FPress Fto display the maximum measured

temperature. The display shows MAX.

Press Fa second time to display the minimum

measured temperature. The display shows MIN.

Press Fa third time to turn off this function.

EPress Eand hold for 1 second to save the

displayed temperature. The display flashes TEMP

MEM 5 times to indicate that the operation is

successful.

Press Eto display a stored temperature. The

display shows TEMP MEM. Press Eagain to

turn off this function.

DPress Dto switch between oC and oF.

Pressing any of the three top pushbuttons wakes up

the thermometer.

Model 65 English Instruction Sheet

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Display Elements

aab01f.eps

ALaser-enabled indicator

BMeasurement activity indicator

CTemperature hold indicator

DBattery level indicator

EMeasured surface temperature value

FCelsius or Fahrenheit mode

GStored temperature indicator

HMaximum, minimum, or stored temperature value

IMaximum or minimum temperature indicator

Ensuring Accuracy

Emissivity

Emissivity is a value between 0 and 1 that indicates an object’s

ability to emit infrared energy. Emissivity is determined primarily

by the object’s composition and surface finish. A polished, non-

oxidized metallic surface has an emissivity value near 0 and a

dull, black surface has an emissivity value near 1. (See

"Emissivity of Common Materials.")

The thermometer’s sensitivity to emissivity is set at the factory to

0.95. If the emissivity of the object is not 0.95, the displayed

temperature could differ from the actual surface temperature. To

reduce this difference, apply black tape, black matte paint, or

black magic marker to the object if it is safe to do so and

measure the darkened surface.

Model 65 English Instruction Sheet

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Optical Resolution

Optical resolution (also called "Field of View" or "Distance-to-

Spot-Size Ratio") is the ratio of the thermometer’s distance from

the object’s surface to the size of the area measured ("spot

size"). The closer the thermometer is to the object, the smaller

the spot size. The laser spot size does not indicate the measured

spot size. (See "Laser Offset.")

The thermometer has an 8:1 optical resolution:

aab02f.eps

Distance 200 mm

(8 in) 400 mm

(16 in) 600 mm

(24 in) 800 mm

(32 in)

Spot Size 25 mm

(1 in) 50 mm

(2 in) 75 mm

(3 in) 100 mm

(4 in)

The minimum spot size is 25 mm (1 in), which occurs at a

distance of 200 mm (8 in) from the object. You cannot measure a

smaller spot size by getting closer.

The temperature displayed is an average temperature within the

spot size. Hot spots can be missed if the spot size is too large.

Get as close as possible but no closer than 200 mm (8 in).

Laser Offset

The laser beam is offset 18 mm (0.75 in) from the focal lens.

Choose a sampling spot large enough to include the laser offset.

Surface Temperatures

The thermometer measures the first surface it detects, even a

glass cover, dust, or fog. Make sure the object is not obstructed.

Model 65 English Instruction Sheet

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Measuring Temperatures

Read the section "Ensuring Accuracy " before measuring

temperatures. Check that the batteries are installed and the laser

switch is in the on position. (See the sections "Installing the

Batteries" and "Setting the Switches.")

To take a measurement:

1. If the emissivity of the object is different from 0.95, apply

black tape, black matte paint, or black magic marker to the

object if it is safe to do so. (See the section "Emissivity of

Common Materials.")

2. Point the thermometer at the object.

3. Press

Gand aim the laser beam in the center of the area to

be measured. The display shows the measured temperature.

Out-of-Range Temperatures

The display indicates when a measured temperature reaches the

detection limits of the thermometer. When you recall an out-of-

range temperature, the display shows "Lo" and "Hi" as "---."

Temperature Display

511 °C (951 °F)

500 °C (932 °F)

-50 °C (-58 °F)

-40 °C (-40 °F)

aab04f.eps

Out of range. "Hi" flashes.

Temperature flashes.

Temperature does not flash.

Temperature flashes.

Out of range. "Lo" flashes.

Model 65 English Instruction Sheet

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Maintenance

Installing the Batteries

Remove the holster before replacing the battery or setting the

switches.

Caution

⇒Match the +and −polarities of the battery with the

battery case.

⇒Do not attempt to recharge the batteries.

⇒Do not throw batteries into a fire.

⇒Follow local laws or regulations when disposing

batteries.

The Bindicates battery life remaining. Replace both

batteries when Istarts blinking.

Cleaning the Focal Lens

Do not use solvents to clean the focal lens. Blow off loose

particles using clean, dry compressed air. Gently brush

remaining debris away with a camel hair brush or high-quality

lens tissue. The tissue may be moistened with clean water.

Cleaning the Case and Holster

Use soap and water or a mild commercial cleaner. Wipe with a

damp sponge or soft rag.

Model 65 English Instruction Sheet

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Setting the Switches

The switches enable the laser beam and display backlight. To

activate the laser, press G. The factory settings are in the on

positions. The on position is to the right and the off position is to

the left.

Troubleshooting

Condition Solution

The laser will not activate. If the display does not turn on or

shows I, replace the battery.

If the display does not show A,

turn on the laser switch.

The thermometer seems to be

giving incorrect readings. Check for the conditions in

"Ensuring Accuracy" and "Cleaning

the Focal Lens."

The displayed temperature

fluctuates (but the surface

temperature remains

constant).

Leave the thermometer on until the

displayed temperature stabilizes.

(Some fluctuation is normal,

especially in the tenths digit.)

Calibration

Fluke recommends that you return the thermometer annually to a

Fluke Service Center for calibration, starting one year after

purchase.

Model 65 English Instruction Sheet

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Emissivity of Common Materials

Object Emissivity

Skin, human 0.98

Ice 0.96–0.98

Cement 0.96

Asphalt, Tar, Pitch 0.95–1.00

Concrete 0.94

Water 0.92–0.96

Plastic 0.90–1.00

Foods, bulk (fruits, oils, etc.) 0.85–1.00

Glass 0.85–1.00

Paint 0.80–0.97

Ceramic 0.80–0.94

Plaster 0.80–0.90

Wood 0.80–0.90

Steel, oxidized 0.80

Iron, oxidized 0.78–0.84

Copper, oxidized 0.78

Brass oxidized 0.56–0.64

Rolled stainless steel 0.45

Aluminum, oxidized 0.40

Zinc, galvanized 0.28

Copper, matte 0.22

Brass, polished 0.05

Iron, unoxidized 0.05

Copper, polished 0.02–0.07

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