Exergen DX SERIES Manuel utilisateur

EXERGEN

400 Pleasant Street - Watertown, MA 02472

Phone: 617.923.9900 Fax: 617.923.9911

www.exergen.com

e-mail: [email protected]

DX SERIES

Handheld Infrared

Thermometers

User’s Guide

Table of Contents

Chapter One - Welcome to Infrared Thermometry . . . .1

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . .1

1.2 Product Features . . . . . . . . . . . . . . . . . . . . . . .1

1.3 Models and Ordering Information . . . . . . . . . . . . . . .1

Chapter Two - Operation . . . . . . . . . . . . . . . . . . . . . . .2

2.1 DX Controls . . . . . . . . . . . . . . . . . . . . . . . . . . .2

2.2 To Change Display Measurement Units . . . . . .2

2.3 To Change Mode of Operation . . . . . . . . . . . . .3

2.4 Temperature Measurements . . . . . . . . . . . . . . .3

2.4.1 General Operation . . . . . . . . . . . . . . . . .3

2.4.2 Temperature Measurement of

Moving Targets . . . . . . . . . . . . . . . . . .3

2.4.3 High Temperature Targets . . . . . . . . . . .5

2.5 MAX Mode Temperature Measurements . . . . . .5

2.5.1 General Operation . . . . . . . . . . . . . . . . .5

2.6 SCAN Mode Temperature Measurements . . . . .6

2.6.1 General Operation . . . . . . . . . . . . . . . . .6

Chapter Three - Measurement Tips . . . . . . . . . . . . . . . .6

3.1 Optimizing Target Area Measurements . . . . . . .6

3.2 Measuring Metallic Targets . . . . . . . . . . . . . . . .6

3.3 Optimizing AESC Measurements for

NIST Traceability . . . . . . . . . . . . . . . . . . . . . . .7

3.4 Measuring Transparent Materials . . . . . . . . . . .7

3.5 Measuring Wet or Icy Surfaces . . . . . . . . . . . . .8

Chapter Four - Maintentance . . . . . . . . . . . . . . . . . . . . .8

4.1 Battery Replacement . . . . . . . . . . . . . . . . . . . .8

4.2 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.3 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

4.4 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

Chapter Five - Troubleshooting . . . . . . . . . . . . . . . . . . .9

5.1 Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . .9

5.2 Troubleshooting Measurement Difficulties . . . . .11

Chapter Six - DX™ Specifications . . . . . . . . . . . . . . . . .11

Chapter Seven - Warranty . . . . . . . . . . . . . . . . . . . . . . .12

Chapter One - Welcome to Infrared

Thermometry

1.1 Introduction

Exergen Corporation, the world's leading manufacturer of infrared

temperature systems, presents the low cost DX Series™ of hand held

infrared thermometers. These dual-purpose systems function as both

NIST traceable temperature calibrators and thermal scanning devices.

Make fast, accurate, and reliable temperature measurements using

advanced non-contact IR technology.

Meet your company's product quality conformance needs with the

DX's patented Automatic Emissivity Compensation System (AECS).

In this mode, the unit will provide precision temperature measure-

ments of spot targets, without knowing the target's emissivity value,

and without errors caused by other sources of incident radiation.

Since the DX is NIST traceable, it can function as a primary tempera-

ture calibrator for other temperature measuring devices, serving your

corporate quality instrument calibration programs. Operate the DX in

SCAN mode, for thermal scanning measurements over a range of tar-

get temperatures. Thermal Scanning is very useful in many applica-

tions such as evaluating insulation, monitoring machinery, and

inspecting electrical equipment. Or the DX may be operated in the

MAX mode where the highest temperature measured while monitoring

is presented.

This manual provides complete instructions on how to operate and

use your DX--to provide fast, accurate, reliable temperature measure-

ments for your application needs.

1.2 Product Features

Designed for ease of use and measurement flexibility, the DX fea-

tures:

• Dual purpose, AECS as well as MAX and SCAN measurement

modes

• Measurement resolution to 0.1 °F or 0.1°C

• Factory calibration for precise results

• A 10 second display reading hold

• Internal self test and error diagnostic codes to insure proper

function

1.3 Models and Ordering Information

DX 501 -50 to 550°F (-45 to 287°C) Unit includes a 9 V DC Alkaline

Battery and DX Instruction Manual. Also available with a

Remote Sensor, and RS232 Digital Output.

DX 1001 0 to 1000°F (-18 to 538°C) Unit includes a 9 V DC Alkaline

Battery and DX Instruction Manual. Also available with a

Remote Sensor, and RS232 Digital Output.

DX 1201 0 to 1207°F (86 to 653°C) Unit includes a Remote Sensor,

9 V DC Alkaline Battery and DX Instruction Manual.

DX 1601 0 to 1600°F (86 to 871°C) Unit includes a Remote Sensor,

9 V DC Alkaline Battery and DX Instruction Manual.

Chapter Two - Operation

2.1 DX Controls

LED Display

MEASUREMENT

button

LED Display

Sensor Window

AECS Cup

Battery Cover

Screw

Displays target temperature and diag-

nostic codes

Measurement

button

To turn on and perform temperature

measurements

Nosepiece

w/AECS cup

Sensor window

Automatic Emissitivity Compensation

System (AECS) nosepiece to contact target

Sensor viewing area for IR detector

2.2 To Change Display Measurement Units

The DX Models come from the factory displaying temperature in units

of Fahrenheit. To display readings in units of Celsius, perform the fol-

lowing steps:

1. Remove the screw from the underside of the case.

2. Remove the cover, exposing the battery area.

3. Locate the push button switch as shown in the picture.

4. With the unit off (display is blank), push the push button in.

5. Holding the push button in, turn the unit on with the MEASURE-

MENT button.

The instrument now reads in °C instead of °F. To return to the original

setting, simply repeat the process.

2.3 To Change Mode of Operation

The DX Models come from the factory operating in the MAX mode.

To change to the SCAN mode perform the following steps:

1. Remove the screw from the underside of the case.

2. Remove the cover, exposing the battery area.

3. Locate the slide switch as shown in the picture.

4. Change the position of the slide switch from 1 to ON.

The unit will now operate in the SCAN mode. ON ÎSCAN,

1 ÎMAX.

ºF/ºC Switch MAX/SCAN Switch

2.4 Temperature Measurements

2.4.1 General Operation

CAUTION... SHOCK HAZARD

DO NOT TOUCH THE INSTRUMENT TO

ELECTRICAL CONDUCTORS*

The DX™ measures temperature very quickly. To obtain an accurate

measurement, it is only necessary to touch the surface for a fraction

of a second.

For exact surface temperature measurements that are NIST traceable,

use the following procedure:

1. Press and hold the MEASURE button.

2. The display will briefly show [8888].

3. Touch the nosepiece to the target surface.

4. The display may or may not change, but the "beeping" sound will

indicate that measurements are being made.

5. Record the temperature from the display.

6. Release the MEASURE button. The last reading will remain

locked on the display for 10 seconds after releasing the button.

*If the target is electrical equipment, Exergen manufactures the Model

E Microscanner instruments for safe and convenient inspection of

electrical equipment. Contact Exergen for more information on the

Model E line of instruments and electrical inspection. If the surface

is metallic, be sure to mark it as described in the Measurement Tips

section in Chapter Three.

2.4.2 Temperature Measurement of Moving Targets

To measure moving targets that are not possible to touch, use the fol-

lowing procedure:

1. Press and hold the MEASURE button.

2. The display will briefly show [8888].

3. Bring the nosepiece as close as possible to the target, preferably

within 1/32 inch (1 mm). **

4. The display may or may not change, but the "beeping" sound will

indicate that measurements are being made.

5. Record the temperature from the display.

6. Release the MEASURE button. The last reading will remain

locked on the display for 10 seconds after releasing the button.

** If the surface is metallic, be sure to mark it as described in the

Measurement Tips section in Chapter Three.

2.4.3 High Temperature Targets

When using the DX™ to measure high temperature targets, above

100 °F, quickly touch the target's surface -- one second is long

enough to get an accurate reading.

Follow the procedures described above under 2.4.1 General

Operation (see pg. 5). If the DX makes contact with a hot surface for

an extended time (10 seconds or more) the target will conduct heat.

Although this will not harm the unit, the indicated temperature may be

a few degrees too high. Allow a few minutes between readings for

the nosepiece to cool down and stabilize.

If the DX makes contact with a hot surface and an error message [HI]

shows on the display remove the instrument from the object immediately.

2.5 MAX Mode Temperature Measurements

Use this measurement mode when making contact with the target or

when the target is large. The DX is a wide-angle thermal scanner

with a fixed emissivity of 0.9. The target's temperature is continuous-

ly displayed and updated 10 times per second for as long as you hold

the MEASURE button down.

The DX displays the average temperature of everything within the

sensor's field of view measurement area. The size of the measuring

area depends on the distance of the device from the target. The DX

has a 1:1 field of view, which means that this unit will measure a 1"

diameter target area when the device is 1" from the target.

2.5.1 General Operation

For continuous temperature measurement of a target or for tempera-

ture measurement at a distance, use the following procedure.

1. Determine the appropriate measurement distance from your

desired target. Best measurements are made when the AECS

cup is in contact with the target.

2. Make sure the MODE switch is on MAX.

3. Point the nosepiece at the target.

4. Press and hold the MEASURE button.

5. Record the temperature from the display.

6. Release the MEASURE button. The last reading will remain

locked on the display for 10 seconds after releasing the button.

2.6 SCAN Mode Temperature Measurements

Use this measurement mode for thermal scanning of a target or when

measuring targets located at a distance. The DX is a wide-angle ther-

mal scanner with a fixed emissivity of 0.9. The target's temperature is

continuously displayed and updated 10 times per second for as long

as you hold the MEASURE button down.

The DX displays the average temperature of everything within the

sensor's field of view measurement area. The size of the measuring

area depends on the distance of the device from the target. The DX

has a 1:1 field of view, which means that this unit will measure a 1"

diameter target area when the device is 1" from the target.

2.6.1 General Operation

For continuous temperature measurement of a target or for tempera-

ture measurement at a distance, use the following procedure.

1. Determine the appropriate measurement distance from your

desired target.

2. Make sure the MODE switch is on SCAN.

3. Point the nosepiece at the target.

4. Press and hold the MEASURE button.

5. Record the temperature from the display.

6. Release the MEASURE button. The last reading will remain

locked on the display for 10 seconds after releasing the button.

Chapter Three - Measurement Tips

3.1 Optimizing Target Area Measurements

When performing a continuous thermal scan of a target, or measuring

a target located at a distance, proper target alignment will help assure

accurate results. Since the DX's sensor measurement area is fixed at

a field of view of 1 to 1, it is important to properly determine the best

measuring distance from the target, to optimize the reading. A field of

view of 1 to 1 means that the DX’s viewing area is 1" diameter for 1"

distance from target. Optimize optical alignment, so that the DX

views only the target and does not exceed the measurement area.

See Figure below for examples of proper optical alignment.

3.2 Measuring Metallic Targets

In general, infrared thermometers can easily measure non-metallic

surfaces because they emit most of their potential heat. Metallic sur-

faces, on the other hand, are poor emitters and require special treat-

ment before infrared thermometers can accurately measure their tem-

perature. Fortunately, that special treatment is simple and can be

easily accomplished by marking the metallic surface you wish to

measure with a non-metallic substance such as a solid paint marker.

Other substances such as grease, oil, or tape may also be used. It is

only necessary to mark an area slightly larger that the DX nosepiece,

when operating in AECS mode. When operating in MAX or SCAN

modes, mark the appropriate target area for the measuring distance

from the target, based on a 1 to 1 Field of View.

3.3 Optimizing AESC Measurements for NIST

Traceablity

If you look at the DX's nosepiece, you will see that it is really a small

reflective cup with the sensor's window at its base. When the DX's

nosepiece touches the surface of an object, that reflective cup auto-

matically controls what the sensor sees by eliminating variables such

as target emissivity and extraneous radiation. Patented by Exergen

as the Automatic Emissivity Compensation System (AECS), this

unique design ensures accurate readings every time. To optimize

results, make sure that the nosepiece is flush with the target when

possible, so that the reflective cone can completely trap out any light

or incident radiation from the environment.

3.4 Measuring Transparent Materials

Although transparent materials pass visible light, many visibly trans-

parent materials are opaque in the infrared and can be directly meas-

ured by the DX.

To test for infrared transparency, touch the DX to the target's surface

and pass a heat source such as your hand or a penlight through the

sensor's field of view on the other side of the material.

POOR POOR GOOD

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