Power Fist 8001782 Manuel utilisateur

DigitalInfrared

Thermometer

Owner’s Manual

Introduction

This instrument is a portable, easy to use compact-size digital thermometer

with laser sighting designed for one hand operation. The meter comes with

a backlit LCD display, auto-hold function, and auto power down (10

seconds) after releasing trigger to extend battery life.

SafetyInformation

Read the safety and operation instructions before using the digital infrared

thermometer.

DANGER

Pressing the trigger turns the laser beam on and off. Exercise extreme care

and do not allow the laser beam to enter your eye or those of any other

person or animal.

• Do not look directly into the laser light from the optical system

• When measuring the temperature of an object which has a mirror finish,

be careful not to allow the laser light beam to be reflected off the surface

into your eyes or those of another person

• Do not allow the laser beam to impinge upon any ignitable/explosive gas

CAUTION

• Do not use the unit near any device that generates strong electromagnetic

radiation or near a static electrical charge, as these may cause inaccurate

readings

• Do not use the unit where it may be exposed to corrosive or explosive

gasses. The unit could be damaged, or explosion may occur

• Do not keep or use this unit in an environment where it will be directly

illuminated by sunshine, or where it will be exposed to high temperatures,

high humidity or condensation. If you do, it may become deformed, its

insulation may be damaged, or it may no longer function according to

specifications

• Do not point the lens at the sun or any other source of strong light,as this

could damage the sensor

• Do not contact the lens against the object whose temperature is to be

measured, get the lens dirty, allow it to be scratched, or allow any foreign

material to adhere to it. Doing so may cause inacurate readings

• Do not touch or hold the thermometer by the front case. Temperature

readings can be affected by heat from the hand

• Do not place the meter on or around hot objects (158°F [70°C]). It may

cause damage to the case

• If the meter is exposed to significant changes in ambient temperature (hot

to cold or cold to hot) allow 20 minutes for temperature stabilization

before taking measurement

• Condensation may form on the lens when going from a cold to hot

environment - wait 10 minutes for condensation to dissipate before taking

measurements

• This unit is not constructed to be water proof or dust proof, so do not use

it in a very dusty environment or in one where it will get wet

Specifications

General

Display: 3-1/2 digit LCD with maximum reading of 1999

Low battery indication: The is displayed when the battery voltage

drops below the operating level

Measurement rate: 0.25 second, nominal

Operating environment: 32°F to 122°F (0°C to 50°C) at <70% relative

humidity

Storage temperature: -4°F to 140°F (-20°C to 60°C)

Auto power off: 10 seconds

Standby consuming current: <5µA

Battery: Standard 9V battery

Average battery life: 9 hours

Dimensions: 6" x 4" x 1-1/2" (150 mm x 150 mm x 42 mm)

Laser Specifications

Laser safety classification of class 2

Wave length: Red (630 ~ 670nm)

Operating distance: 2 to 50 feet

Power output: <1mW

Electrical Information

Temperature Range: -22°F to 1022°F (-30°C to 550°C)

Display Resolution: 0.5/1°C (Auto), 1°F

Accuracy: ± 4°F (2°C) on -22°F to 212°F (-30°C to 100°C)

± 2% reading on 213°F to 1022°F (101°C to 550°C)

Temperature Coefficient: ± 0.2% of reading or ± 0.36°F (0.2°C), whichever

is greater, change in accuracy per degree

fahrenheit/celsius change in ambient operating

temperature above 82.4°F (28°C) or below 64.4°F

(18°C)

Response Time: 0.25 second

Spectral Response: 6 to 14 mm nominal

Fixed emissivity: 0.95ε

Detection Element: Thermopile

Optical Lens: Fresnel lens

Sighting: Single beam laser marker <1mW (class 2)

OperatingInstructions

Trigger

Laser and backlit turn on at the same time as the power

Pull the trigger to turn on the meter when power off

If the trigger is released the value will be held and “Hold” displayed

Selecting the Temperature Scale

Readings are displayed in either degrees Celsius (°C) or degrees Fahrenheit

(°F). When the thermometer is turned on, it is set to the temperature scale

that was in use when the thermometer was last turned off. To change the

temperature scale, Pull off the battery cap and then slide the switch to select

°C or °F.

Operation

1. Take the protective cap off and then pull the trigger to turn on the meter

2. Point the lens at the object whose temperature is to be measured

3. Referring to the spot size figure below, aim the laser beam at the object

whose temperature is to be measured.

4. Pull the trigger. Measurement is performed as long as trigger is held.

5. Put the cap on to extend life of the sensor and to avoid danger caused by

misuse of the laser

Note: Although the field of measurement (or field of view) and the spot size

almost coincide, actually the field of measurement corresponds to the

diameter for 90% optical response. The object whose temperature is

to be measured needs to be larger than the measurement diameter

(spot of size) by an adequate margin at least 1.5 to 2 times larger.

Temperature

scale selection

switch

Field of view: 3-7/8" at 39"

Spot size increases with

distance from the probe tip as

shown (spot diameter measured

at 90% energy)

MeasurementConsiderations

Theory of measurement

Every object emits infrared energy in accordance with its temperature. By

measuring the amount of this radiant energy, it is possible to determine the

temperature of the emitting object.

About Infrared

Infrared radiation is a form of light (electromagnetic radiation), and has the

property that it passes easily through air while it is easily absorbed by solid

matter. With an emission thermometer which operates by detecting infrared

radiation, accurate measurement is possible, irrespective of the air

temperature of the measurement distance.

Emission Thermometer Structure

Infrared radiation which has been emitted from the object is focused upon

an infrared radiation sensor, via an optical system. This includes a lens

which is transparent to infrared radiation, and a 5.3 µm cut off filter. The

output signal from the infrared radiation sensor is input to an electronic

circuit along with the output signal from a standard temperature

(thermopile).

Emissivity

All objects emit infrared energy. The amount of energy emitted is

proportional to the object's temperature and its ability to emit INFRA-RED

energy. This ability, called emissivity, is based upon the material that the

object is made of and its surface finish. Emissivity values range from 0.10

for a very reflective object to 1.00 for a black body. The emissivity of this

themometer is set at a value of 0.95 which covers 90% of typical

applications.

• If the surface to be measured is covered with frost or other material, clean

it to expose the surface.

• If the surface to be measured is highly reflective, apply masking tape or

matte finish black paint to the surface.

• If the meter seems to be giving incorrect readings, check the front cone.

There may be condensation or debris obstructing the sensor; clean per

instructions in the maintenance section.

25 cm 50 cm 1 m

Distance to object Laser

marker

diameter

16 mm

Maintenance

Battery replacement

1. Power is supplied by a 9 volt cell

battery.

2. Remove the battery cover by

gently sliding it toward the bottom

of the meter.

3. Remove and disconnect the old

battery from the meter and replace

with a new unit. Wind the excess

lead length and put the top of the

battery beneath the the battery

chamber. Install the battery and

replace the battery cover.

Cleaning

Periodically wipe the case with a damp cloth and detergent, do not use

abrasives or solvents.

Substance

Asphalt

Concrete

Cement

Sand

Earth

Water

Ice

Snow

Glass

Ceramic

Marble

Plaster

Mortar

Brick (red)

Cloth (black)

Human skin

Lather

Charcoal (powder)

Lacquer

Lacquer (matte)

Rubber (black)

Plastic

Timber

Paper

Chromium oxides

Copper oxides

Iron oxides

Textiles

Thermal emissivity

0.90 to 0.98

0.94

0.96

0.90

0.92 to 0.96

0.96 to 0.98

0.83

0.90 to 0.95

0.90 to 0.94

0.94

0.80 to 0.90

0.89 to 0.91

0.93 to 0.96

0.98

0.75 to 0.80

0.96

0.80 to 0.95

0.97

0.94

0.85 to 0.95

0.90

0.70 to 0.94

0.81

0.78

0.78 to 0.82

0.90

Avoid exposure:

Laser radiation is emitted from the

aperture

Caution

Laser radiation - do not stare into beam

Power Out: <1mW

Wave length: Red (630 to 670 nm)

Laser safety classification: Class II

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