Extech Instruments 42510A Bedienungsanleitung

User’s Manual

Wide Range Mini InfraRed Thermometer

with Laser Pointer

MODEL 42510A

42510A V3.2 9/08

Introduction

Congratulations on your purchase of the Model 42510A IR Thermometer. This Infrared

thermometer measures and displays non-contact temperature readings up to 1200oF

(650oC). The adjustable emissivity feature allows the IR thermometer to measure the

temperature of virtually any surface. The built-in laser pointer increases target accuracy

while the backlit LCD and handy push buttons combine for convenient, ergonomic

operation. Operational functions include adjustable emissivity, high-low alarms, MIN-MAX

memory, and trigger-lock test mode. This instrument is fully tested and calibrated prior to

delivery, proper use and care of this meter will provide years of reliable service.

Warranty

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be free of defects

in parts and workmanship for three years from date of shipment (a six month limited warranty applies on

sensors and cables). If it should become necessary to return the instrument for service during or beyond the

warranty period, contact the Customer Service Department at (781) 890-7440 ext. 210 for authorization or visit

our website at www.extech.com (click on ‘Contact Extech’ and go to ‘Service Department’ to request an RA

number). A Return Authorization (RA) number must be issued before any product is returned to Extech. The

sender is responsible for shipping charges, freight, insurance and proper packaging to prevent damage in

transit. This warranty does not apply to defects resulting from action of the user such as misuse, improper

wiring, operation outside of specification, improper maintenance or repair, or unauthorized modification. Extech

specifically disclaims any implied warranties or merchantability or fitness for a specific purpose and will not be

liable for any direct, indirect, incidental or consequential damages. Extech's total liability is limited to repair or

replacement of the product. The warranty set forth above is inclusive and no other warranty, whether written or

oral, is expressed or implied.

Safety

•Use extreme caution when the laser pointer is on

•Do not point the beam toward anyone's eye or allow

the beam to strike the eye from a reflective surface

•Do not use the laser near explosive gases or in other

potentially explosive areas

42510A V3.2 9/08

Description

Meter Description

1. IR Sensor and Laser pointer

2. LCD Display

3. Function Buttons

4. Measurement Trigger

5. Battery compartment

Function buttons

(Laser) and ▲(UP) arrow button

(Backlight) and ▼(DOWN) arrow button

MODE button

Display Description

1. SCAN, measurement in progress

2. HOLD, last measurement locked in display

3. Laser pointer active

4. Power locked ON

5. High limit alarm

6. Low limit alarm

7. C or F temperature units

8. Main temperature display

9. Low battery icon

10. MAX or MIN icon

11. Emissivity setting

12. Emissivity icon

13. MAX or MIN temperature display

42510A V3.2 9/08

Operating Instructions

Temperature Measurements

1. Hold the meter by its handle and point it toward the surface to be measured.

2. Pull and hold the trigger to turn the meter on and begin testing. The temperature

reading will change as the user scans various targets.

3. The ‘SCAN’ icon remains on until the user releases the trigger.

4. When the trigger is released, the reading will hold for approximately 7 seconds (HOLD

will replace SCAN on the LCD) after which the meter will automatically shut off. The

only exception to this is if the LOCK mode is set to ON.

Laser Pointer

The Laser pointer optimizes the user’s aim during scanning. To turn the Laser on/off:

1. Press and release the Trigger

2. While HOLD is on the display, press the laser button once to turn the Laser on or

off.

3. The laser icon will appear in the LCD when the Laser is on.

4. The status of the Laser is remembered by the meter and will remain as the ON

condition until changed.

Backlight

1. Press and release the trigger

2. While HOLD is on the display, press the backlight button once to turn the backlight

on or off.

3. The backlight will illuminate the LCD when the feature is enabled.

4. The status of the backlight will be stored in memory and will remain as the ON

condition until changed.

5. Note: The backlight will shorten the battery life; use sparingly and only as necessary.

Over-range Indication

If the temperature measurement exceeds the specified temperature range, the

thermometer will display dashes in place of a temperature reading.

42510A V3.2 9/08

The MODE button options

The MODE button is used to access the emissivity adjustment, unit of measure selection,

MAX-MIN feature, test-lock feature, and high-low alarms

1. Press and release the trigger

2. While HOLD is on the display, press the MODE button to enter the programming mode

and to step through and configure the following features. A blinking icon indicates the

feature is selected.

E= (Emissivity Value)

Press the ▲or ▼buttons to change the emissivity value from 0.10 to 1.00

C/F (Units of Measure)

Use the ▲and ▼buttons to select the unit of measure.

MAX-MIN (highest and lowest reading memory)

Press the ▲or ▼buttons to select MIN or MAX display

(Lock mode On/Off)

Press the ▲or ▼buttons to turn the lock feature ON or OFF.

(High Alarm On/Off)

Press the ▲or ▼buttons to turn the High Alarm feature ON or OFF.

(High Alarm setting)

Press the ▲or ▼buttons to set the high alarm limit value in the main display

(Low Alarm On/Off)

Press the ▲or ▼buttons to turn the High Alarm feature ON or OFF.

(Low Alarm setting)

Press the ▲or ▼buttons to set the Low alarm limit value in the main display.

Emissivity adjustment

An adjustable emissivity allows for accurate measurements on a variety of surface colors,

textures, reflectivity, and finishes. The topic of emissivity is covered in greater detail in a

subsequent section of this guide.

Temperature Units

The temperature units can be set to °F or °C in the programming mode using the ▲and ▼

buttons

MAX (maximum) and MIN (minimum) Temperature display

The highest reading (MAX) or the lowest reading (MIN) encountered during a single

measurement scan is displayed in the lower left-hand display area on the LCD. Select MIN

or MAX in the programming mode using the ▲and ▼buttons

Lock feature

The LOCK feature disables the Auto Power Off feature for the period of use when

selected. The feature is useful for long term temperature monitoring and hands free use.

The meter will revert to auto power off if the trigger is pressed during a locked scan.

High and Low Alarm Feature

The meter has a programmable high and low alarm feature. When either alarm point is

reached the meter will alert the user via an audible beep and a blinking LCD display icon.

The alarm limit is set and the feature is enabled/disabled in the programming mode. The

setting is stored and memory and will remain as the ON condition until changed.

42510A V3.2 9/08

IR Measurement Notes

1. The object under test should be larger than the spot (target) size calculated by the field

of view diagram (printed on the side of the meter and in this guide).

2. Before measuring, be sure to clean surfaces that are covered with frost, oil, grime, etc.

3. If an object's surface is highly reflective, apply masking tape or flat black paint to the

surface before measuring. Allow time for the paint or tape to adjust to the temperature

of the surface it is covering.

4. Measurements through transparent surfaces such as glass may not be accurate.

5. Steam, dust, smoke, etc. can obscure measurements.

6. The meter automatically compensates for deviations in ambient temperature. However,

it can take up to 30 minutes for the meter to adjust to extremely wide changes.

7. To find a hot spot, aim the meter outside the area of interest then scan across (in an up

and down or side to side motion) until the hot spot is located.

Field of View

The meter’s field of view is 12:1. For example, if the meter is 24 inches from the target

(spot), the diameter of the target must greater than 2 inches. Other distances are shown in

the field of view diagram. Measurements should normally be made as close as possible to

the device under test. The meter can measure from moderate distances but the

measurement may be affected by external sources of light. In addition, the spot size may

be so large that it encompasses surface areas not intended to be measured.

1”

@12”

2”

@24”

4”

@48”

2.54cm

@30.5cm 5cm

@61cm 10cm

@122cm

42510A V3.2 9/08

Emissivity and IR Measurement Theory

IR Thermometers measure the surface temperature of an object. The thermometer’s optics

sense emitted, reflected, and transmitted energy. The thermometer’s electronics translate

the information into a temperature reading which is then displayed on the LCD.

The amount of IR energy emitted by an object is proportional to an object's temperature

and its ability to emit energy. This ability is known as emissivity and is based upon the

material of the object and its surface finish. Emissivity values range from 0.1 for a very

reflective object to 1.00 for a flat black finish. For the Model 42510A, the emissivity is

adjustable from 0.1 to 1.00. Most organic materials and painted or oxidized surfaces have

an emissivity factor of 0.95. When in doubt, set the emissivity to 0.95.

Emissivity Factors for Common Materials

Material under test Emissivity Material under test Emissivity

Asphalt 0.90 to 0.98 Cloth (black) 0.98

Concrete 0.94 Skin (human) 0.98

Cement 0.96 Leather 0.75 to 0.80

Sand 0.90 Charcoal (powder) 0.96

Soil 0.92 to 0.96 Lacquer 0.80 to 0.95

Water 0.92 to 0.96 Lacquer (matt) 0.97

Ice 0.96 to 0.98 Rubber (black) 0.94

Snow 0.83 Plastic 0.85 to 0.95

Glass 0.90 to 0.95 Timber 0.90

Ceramic 0.90 to 0.94 Paper 0.70 to 0.94

Marble 0.94 Chromium Oxides 0.81

Plaster 0.80 to 0.90 Copper Oxides 0.78

Mortar 0.89 to 0.91 Iron Oxides 0.78 to 0.82

Brick 0.93 to 0.96 Textiles 0.90

Battery Replacement

When the low battery symbol appears on the display, replace the

meter’s battery (9V). The battery compartment is located behind the

panel that surrounds the meter’s trigger. Open the compartment by

pulling the panel down from the trigger area. Replace the 9V battery

and close the battery compartment cover.

42510A V3.2 9/08

Specifications

Range / Resolution 0.1° resolution from -58.0 to 999.9°F (-50.0 to 650.0°C);

1° resolution from 1000°F to 1200°F

Accuracy -58°F to -31°F (-50°C to -35°C) ±9°F/4°C

-31°F to 28°F (-35°C to -2°C) ±5°F/3°C

28°F to 200°F (-2°C to 94°C) ±3°F/2.5°C

200°F to 400°F (94°C to 204°C) ±(1.0%rdg + 2°F/1°C)

400°F to 800°F (204°C to 426°C) ±(1.5%rdg + 2°F/1°C)

800°F to 1200°F (426°C to 650°C) ±(2.0%rdg +2°F/1°C)

Note: Accuracy is specified for the following ambient temperature

range: 64 to 82°F (18 to 28°C)

Emissivity 0.10 to 1.00 adjustable

Field of View D/S = Approx. 12:1 ratio (D = distance; S = spot or target)

Laser pointer Class 2 laser < 1mW power; Wavelength: 630 to 670nm

IR Spectral response 8 to 14 μm

Repeatability ± 0.5% of reading or ± 1.8oF/1oC; whichever is greater

General Specifications

Display Backlit LCD display with function indicators

Response time 300ms

Over range indication “---------“

Operating Temperature 32oF to 122oF (0oC to 50oC)

Operating Humidity 10% to 90%RH operating, <80%RH storage.

Storage Temperature 14 to 140oF (-10 to 60oC)

Power Supply 9V battery

Automatic Power Off 7 seconds, with LOCK to disable

Weight 6.4 oz. / 180g

Dimensions 3.2 x 1.6 x 6.3” (82 x 42 x 160mm)

42510A V3.2 9/08



Support line (781) 890-7440

Technical support: Extension 200; E-mail: [email protected]m

Repair & Returns: Extension 210; E-mail: [email protected]

Product specifications subject to change without notice

For the latest version of this User’s Guide, Software updates, and other

up-to-the-minute product information, visit our website: www.extech.com

Extech Instruments Corporation, 285 Bear Hill Rd., Waltham, MA 02451

Calibration and Repair Services

Extech offers repair and calibration services for the products we sell. Extech also

provides NIST certification for most products. Call the Customer Service Department for

information on calibration services available for this product. Extech recommends that

annual calibrations be performed to verify meter performance and accuracy.

42510A V3.2 9/08

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