RayTek RAYNGER 3i LTSC, RAYNGER 3i LRSC, RAYNGER 3i LTCL2, RAYNGER 3i LTCL3, RAYNGER 3i LRSCL2 Operator's Manual

Rev H

6/98

56700-1

RAYNGER

®

3i

™

SERIES

OPERATOR’S MANUAL

▲

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amb

T

RUN

▲

▼

LOG

DC

OUT

▼

( )

O

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( )

I

H

RECALL

MODE

•

ACTIVATE

LOCK

•

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SET

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WARRANTY

Raytek warrants each instrument it manufactures to be free from defects in material and work­manship under normal use and service for the period of one year from date of purchase. This
warranty extends only to the original purchaser. This warranty shall not apply to fuses, batteries,
or any product which has been subject to misuse, neglect, accident, or abnormal conditions of
operation.

In the event of failure of a product covered by this warranty, Raytek will repair the instrument
when it is returned to an authorized Service Facility within one year of the original purchase,
provided the warrantor’s examination discloses to its satisfaction that the product was defective.
The warrantor may, at its option, replace the product in lieu of repair. With regard to any instru­ment returned within one year of the original purchase, said repairs or replacement will be made
without charge. If the failure has been caused by misuse, neglect, accident, or abnormal condi­tions of operation, repairs will be billed at nominal cost. In such cases, an estimate will be sub­mitted before work is started, if requested.

THE FOREGOING WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESSED
OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OF MER­CHANTABILITY, FITNESS, OR ADEQUACY FOR ANY PARTICULAR PURPOSE OR USE.
RAYTEK SHALL NOT BE LIABLE FOR ANY SPECIAL, INCIDENTAL, OR CONSEQUEN­TIAL DAMAGES, WHETHER IN CONTRACT, TORT, OR OTHERWISE.

WORLDWIDE HEADQUARTERS

Raytek Corporation
1201 Shaffer Road, PO Box 1820
Santa Cruz, CA 95061-1820 USA

Portable Products Division

800 866 5478
Phone [phone]
Fax [phone]

WORLD WIDE WEB
www.raytek.com

EUROPEAN HEADQUARTERS

Raytek GmbH
Arkonastrasse 45-49
D-13189 Berlin, Germany
Phone [phone]
FAX [phone]

Offices worldwide:

BRAZIL

Raytek do Brasil
Sorocaba, Brasil
Phone [phone]

CHINA

Raytek China Company
Beijing, China
Phone [phone]

JAPAN

Raytek Japan, Inc.
Tokyo, Japan
Phone [phone]

MEXICO

Raytek de Mexico
Puebla, Mexico
Phone [phone]

UNITED KINGDOM

Raytek UK
Milton Keynes, UK
Phone [phone]

® Raytek and Raynger are registered trademarks and 3i is a trademark of Raytek Corporation
© 1997 Copyright Raytek Corporation

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Raynger 3i Series Operator's Manual Table of Contents

TABLE OF CONTENTS

SECTION PAGE

1.0 INTRODUCTION.............................................................................1-1

1.1 DESCRIPTION.......................................................................................................1-1

1.2 INVENTORY..........................................................................................................1-2

1.3 MODEL IDENTIFICATION.................................................................................1-3

2.0 OPERATION ......................................................................................2-1

2.1 QUICK START........................................................................................................2-2

2.2 PRINCIPLES OF OPERATION............................................................................2-3

2.3 YOUR PORTABLE INFRARED THERMOMETER...........................................2-4

2.4 OPERATION AND CONTROLS.........................................................................2-6

2.4.1 Battery/AC Adaptor Installation...................................................................2-6

2.4.2 Control Panel and Display..............................................................................2-7

2.4.3 Control System ...............................................................................................2-10

2.4.3.1 Control Loops ..............................................................................................2-10

2.4.3.2 General Information....................................................................................2-11

2.4.4 RUN Loop—To Measure Temperature .......................................................2-12

2.4.5 LOG Loop—To Measure and Store Temperature......................................2-14

2.4.6 RECALL Loop—To Recall Measured Temperature ..................................2-16

2.4.6.1 RECALL Values from RUN .......................................................................2-16

2.4.6.2 RECALL Values from LOG........................................................................2-17

2.4.7 SETUP Loop—To Setup and Activate Alarms and Features...................2-19

2.4.7.1 SETUP Values for RUN ..............................................................................2-19

2.4.7.2 SETUP Values for LOG...............................................................................2-21

2.5 USING A TRIPOD...............................................................................................2-22

2.6 DATA OUTPUTS .................................................................................................2-23

2.6.1 Digital Output.................................................................................................2-24

2.6.1.1 Data Output—RUN Loop..........................................................................2-24

2.6.1.2 Data Output—SET Loop............................................................................2-25

2.6.1.3 Data Output—LOG Run Loop..................................................................2-26

2.6.1.4 Data Output—LOG SETUP Loop.............................................................2-27

2.6.2 Analog Output................................................................................................2-28

SECTION PAGE

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Table of Contents Raynger 3i Series Operator's Manual

2.7 SIGHTING SYSTEMS..........................................................................................2-29

2.7.1 Single Laser Sighting .....................................................................................2-31

2.7.2 Dual Laser Sighting........................................................................................2-31

2.7.3 Crossed Laser Sighting..................................................................................2-32

2.7.4 Scope Sighting ................................................................................................2-32

3.0 SPECIFICATIONS ............................................................................3-1

3.1 THERMAL..............................................................................................................3-1

3.2 OPERATIONAL.....................................................................................................3-2

3.3 ELECTRICAL .........................................................................................................3-3

3.4 ENVIRONMENTAL..............................................................................................3-4

3.5 PHYSICAL..............................................................................................................3-4

3.6 DEFAULT VALUES ...............................................................................................3-5

3.7 REGULATORY.......................................................................................................3-6

4.0 MAINTENANCE...............................................................................4-1

4.1 BATTERY REPLACEMENT.................................................................................4-1

4.2 CLEANING ............................................................................................................4-1

4.2.1 Front Window Cleaning..................................................................................4-1

4.2.2 Cleaning the Housing......................................................................................4-2

4.3 LASER MAINTENANCE.....................................................................................4-2

SECTION PAGE

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Raynger 3i Series Operator's Manual Table of Contents

APPENDIX A: OPTICAL...........................................................................A-1

HOW TO READ THE OPTICAL CHARTS...................................................................A-1

OPTICAL CHARTS ..........................................................................................................A-2

APPENDIX B: OBJECT EMISSIVITY.......................................................B-1

HOW TO DETERMINE OBJECT EMISSIVITY.............................................................B-1

TYPICAL EMISSIVITY VALUES.....................................................................................B-2

APPENDIX C: TROUBLESHOOTING ....................................................C-1

APPENDIX D: OPTIONS AND ACCESSORIES...................................

D-1

APPENDIX E: TRACEABILITY OF

INSTRUMENT CALIBRATION...............................................................E-1

APPENDIX F: CE CONFORMITY FOR THE

EUROPEAN COMMUNITY......................................................................F-1

GLOSSARY OF TERMS

INDEX

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Table of Contents Raynger 3i Series Operator's Manual

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Raynger 3i Series Operator’s Manual 1-1

1.0 INTRODUCTION

1.1 DESCRIPTION

The Raynger

®3i™

series of instruments are portable infrared temperature measure­ment devices. Each model is rugged and easy to use for making fast, noncontact, non­destructive temperature measurements. They can measure operating temperatures of
mechanical, electrical, or production equipment without removing the equipment
from service. They can also measure product temperatures during manufacturing or
storage without contaminating or marring the product. Table 1-1 lists the standard
Raynger 3i models.

Table 1-1: Raynger 3i Models

TEMPERATURE OPTICAL SPECTRAL
MODEL RANGE RESOLUTION RANGE SIGHTING

LTDL2 &
LTDL3

LTSC

LTCL2 &
LTCL3

-30 to 1200°C

(-20 to 2200°F)

-30 to 1200°C

(-20 to 2200°F)

-30 to 1200°C

(-20 to 2200°F)

75:1

75:1

75:1

8-14 µ

8-14 µ

8-14 µ

dual laser

scope

crossed laser

LRSC

LRSCL2

LRL2 &
LRL3

P7DL2 &
P7DL3

G5SC

1MSC

1ML2 &
1ML3

2MSC

2ML2 &
2ML3

-30 to 1200°C

(-20 to 2200°F)

-30 to 1200°C

(-20 to 2200°F)

-30 to 1200°C

(-20 to 2200°F)

10 to 800°C

(50 to 1450°F)
150 to 1800°C

(300 to 3275°F)

600 to 3000°C

(1100 to 5400°F)

600 to 3000°C

(1100 to 5400°F)

200 to 1800°C

(400 to 3275°F)

200 to 1800°C

(400 to 3275°F)

120:1

105:1

120:1

25:1

50:1

180:1

180:1

90:1

90:1

8-14 µ

8-14 µ

8-14 µ

7.9 µ

5.0 µ

1.0 µ

1.0 µ

1.6 µ

1.6 µ

scope

single laser with scope

single laser

dual laser

scope

scope

single laser

scope

single laser

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1-2 Raynger 3i Series Operator’s Manual

Each model is molded from rugged, high-strength, solvent resistant plastic and is
actuated by a two-stage trigger (second stage is used for data logging only). Each
model has the following:

• High quality optical system

• Infrared detector

• Circuit board assembly with microprocessor

• LCD display with backlighting feature

• Touch-sensitive membrane switches for changing loops and modes

• Battery compartment for four AA batteries

• Power input jack for AC adaptor

• Signal output jack (analog 1mV per degree/digital RS232)

• A rugged, padded pouch for easy carrying

There are four types of laser sighting models:

• Single laser—shows the center of the measurement area.

• Dual laser—shows the spot diameter of the measurement area.

• Crossed laser—the point where the two laser beams cross is the location of the
minimum diameter measurement spot.

• Single laser with scope

1.2 INVENTORY

Your Raynger 3i package contains the following:

• Raynger 3i

• Carrying Case

• Operator’s Manual

• Four (4) AA batteries

• Warranty card

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Raynger 3i Series Operator’s Manual 1-3

1.3 MODEL IDENTIFICATION

Refer to Table 1-1 for a list of standard models along with their temperature ranges,
optical resolutions, spectral ranges, and sighting systems.

You can determine the exact model number of your unit by looking at the manufac­turing label on the underside of the unit. On the label is an area for model designa­tion. The model type is printed in the following format:

XXXYYYZZZZZ

where XXX is an abbreviation of the company name, YYY is the product (or abbrevia­tion of the product name), and ZZZZZ is the model type. (Model type may be four or
five characters long. Refer to Table 1-1 to compare the label to model type.)

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Raynger 3i Series Operator’s Manual 2-1

2.0 OPERATION

This portion of the manual contains the following sections:

• Quick Start—To use your unit right away, follow the brief instructions on basic

operating procedures in this section.

• Principles of Operation—A short introduction to infrared thermometry.

• Your Portable Infrared Thermometer—Describes and illustrates the thermome-

ter’s control panel, display, and features.

• How to Operate—A detailed user guide that describes each of the operating

modes. It includes descriptions of the RUN, RECALL, SETUP, and Data Logger
loops.

• Data Outputs—How to use the analog and digital (RS232) outputs to connect the

thermometer to a printer, chart recorder, or computer.

WARNING—LASER SAFETY

Models with laser sighting produce visible laser radiation that may be
harmful to the human eye. Be aware of the following:

• Avoid direct exposure of human eyes to laser light. Eye damage
can result.

• Use extreme caution when operating.

• Never point the unit at another person.

• Keep out of the reach of children.

• Refer to the FDA laser label on the unit for specific information.

IMPORTANT

1. If the unit is exposed to significant changes in ambient temperature
(hot to cold or cold to hot), allow 45 minutes for temperature stabi­lization before taking measurements.

2. Do not operate the unit near large electrical or magnetic fields such
as arc welders and induction heaters. These fields can cause mea­surement errors.

3. For the short wavelength units (e.g., 2 µm and below)—Avoid taking
temperature measurements in bright sunlight. High levels of ambi­ent light may produce apparently valid high-temperature readings
when no target is in the thermometer’s field-of-view.

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2-2 Raynger 3i Series Operator’s Manual

Figure 2-1: Quick Start Display

2.1 QUICK START

To use your portable infrared thermometer right away, complete the following steps:

Note: For complete definitions of your portable thermometer’s modes and functions, and for a

full explanation on its operation, refer to Sections 2.3 and 2.4.

1. Point the instrument at the object you want to measure (perpendicular to the
object) and pull the trigger. The current temperature (in °C or °F), the emissivity
value, and the maximum measured temperature will be displayed (similar to
Figure 2-1).

2. Change the emissivity value to correspond to the material you are measuring by
pressing the ▲ and ▼ buttons. (For example, if you are measuring wrought iron

with an 8-14 micron instrument, set emissivity to 0.90. If you are measuring
asphalt, leave the emissivity at the default setting of 0.95. For other materials and
for instruments with other spectral ranges, refer to the emissivity charts in
Appendix B.)

RUN

LOG

SET

LOG

HI

RECALL

•

MODE

( )

LASER

LO

SET

( )

°C °F

T

amb

ACTIVATE

•

LOCK

RCL

°C or °F flashes

Current measured
temperature

Use the ▲ and ▼
buttons to change the
emissivity setting

Maximum measured
temperature

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Raynger 3i Series Operator’s Manual 2-3

2.2 PRINCIPLES OF OPERATION

An infrared thermometer and the human eye are very similar. An infrared ther­mometer has a lens that focuses infrared radiation from an object onto a detector. The
eye focuses light onto the retina. The detector is stimulated by the incoming infrared
energy and produces a signal that is transmitted to the circuitry. The retina is stimu­lated by incoming light and sends a signal to the brain. The circuitry processes this
signal and computes the temperature of the object.

The intensity of an object’s emitted infrared energy increases or decreases in propor­tion to its temperature. The higher the temperature of the target, the greater the inten­sity of infrared radiation.

To calibrate a noncontact temperature measurement instrument, the manufacturer
uses a blackbody. A blackbody is a perfect emitter because it absorbs and emits all
radiant energy but reflects or transmits none. The emissivity value of a blackbody is

1.00. Figure 2-2 shows the radiant emittance values of a blackbody at various tem­peratures and wavelengths.

Most objects have emissivities that are less than 1.00 but are reasonably uniform at all
wavelengths of the infrared spectrum. These are called graybodies. The non-ideal
(less then 1.00) emissivity values of different materials can be compensated for, by the
emissivity controls, so that accurate temperature readings can be obtained. Emissivity
values for many common materials (both metals and non-metals) are listed in
Appendix B.

Figure 2-2: Blackbody Radiation Curves

2

10

2

1

10

1

-1

10

-2

10

-3

10

Blackbody Radiant Emittance (Watt/cm )

-4

10

12345678

0

Wavelength (Microns)

9 10111213

1500°C (2730°F)
1000°C (1830°F)
542°C (1000°F)

260°C (490°F)

20°C (70°F)

14

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2-4 Raynger 3i Series Operator’s Manual

2.3 YOUR PORTABLE INFRARED THERMOMETER

Portable infrared thermometers measure surface temperatures without touching the
surface. They collect the infrared energy radiated by a target and compute its surface
temperature. They also compute the running average, maximum, minimum, and dif­ferential temperatures and present them on a digital display in either degrees Celsius
or Fahrenheit. A digital/analog output allows data recording, instrumentation or
process control, and/or remote display of temperature and emissivity. The instru­ment is battery powered or can be powered by an optional AC adaptor.

Internal memory circuits store temperature data for later recall, and a datalogging fea­ture allows you to store up to 100 temperature, emissivity, and alarm readings (valu­able for comparative analysis).

Figure 2-3 shows the features of the portable infrared thermometer.

Figure 2-3: Features

Sighting Scope

Trigger (2-stage)

Control Panel
and Display

▲

°F

°C

T

E

S

L

C

R

G

O

L

N

U

R

▲

DC

O

U

T

b

m

a

T

▼

( )

O

L

▼

G

( )

I

O

L

H

SET

RECALL

MODE

•

ACTIVATE

LOCK

•

Digital/Analog Output
DC Input

for AC Adaptor

Battery Access
Tripod Mount Fitting

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Raynger 3i Series Operator’s Manual 2-5

Your portable thermometer has the following:

• Trigger—Two-stage trigger. The first stage activates the unit to take temperature

readings. The second stage is functional only in the datalog mode. To store a tem­perature reading, pull the trigger all the way in until you hear the tone (the tone
signals that the reading has been stored). When you release the trigger, the unit
goes to sleep.

• Control Panel and Display—All controls (except the trigger) are located on the

control panel. The display shows temperature and setup values, mode and loop
status, and operating information.

• Sighting System—Laser or scope sighting is provided with each model.

Note: Read the laser warning label before operating the laser.

• Analog Output—Connects the instrument to analog recording/printing devices

such as chart recorders and printers.

• Digital Output—An RS232 interface to connect the instrument to a computer or

directly to a printer’s RS232 port.

• DC In—AC adaptor connection.

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2-6 Raynger 3i Series Operator’s Manual

2.4 OPERATION AND CONTROLS

This section instructs you in the operation of the instrument. It describes battery
and/or AC adaptor installation and the controls and functions of the different control
loops and operating modes.

2.4.1 Battery/AC Adaptor Installation

The instrument may be powered by batteries or an AC adaptor. Battery power is sup­plied by 4 “AA” batteries. The batteries are located in the base of the handle. AC
power is supplied by an optional AC power adaptor (DIN VDE 0551 approved).
NiCad batteries can also be used, but battery life will be substantially reduced. Figure
2-3 shows the location of the battery compartment, battery orientation, and the loca­tion of the AC adaptor power connection.

Table 2-1 shows approximate battery life (for alkaline batteries) for various operating
conditions.

Notes: Battery types and brands vary in length of usable life. The values in Table 2-1 are

approximate for new alkaline batteries. The instrument will continue to read accurate­ly up to 4 hours after the low battery icon displays if the laser and backlight are off.

Remove the batteries if the unit is not used for long periods of time.

220 VAC adaptors must have DIN VDE 0551 approval to be used with IEC Class 2
laser units.

Table 2-1: Battery Life (Alkaline)

CONDITION

Laser OFF Backlight OFF
Laser ON Backlight OFF
Laser OFF Backlight ON
Laser ON Backlight ON
"Sleep" mode (trigger off)

HOURS OF

CONTINUOUS USE

25

12.5

12.5
10

1 year

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Raynger 3i Series Operator’s Manual 2-7

Figure 2-4: The Control Panel and Display

2.4.2 Control Panel and Display

Figure 2-4 shows the display and controls. Descriptions of these, in alphabetical
order, follow the illustration.

Backlight on/off
button

Run/Log
selector switch

Setup
button

Mode and Recall
button

Laser on/off button

Trigger lock
icon

Backlight
icon

RUN

RUN

LOG

LOG

SET

Data logger

icon

RUN

RUN

LOG

LOG

SET

LOG

HI

RECALL

MODE

•

•

MODE

RECALL

RCL

LOG

HI

RCL

SET

( )

LO

LASER

Recall

loop icon

SET

( )

( )

LO

°C °F

( )

T

amb

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

°C °F

T

amb

Increase/up

button

Decrease/down

button

Activate and trigger

lock button

Setup

loop icon

Celsius/Fahrenheit

icons

Temperature

display

High and low

alarm icons

Ambient temperature

compensation icon

Low battery icon

Mode display

Laser on/off LED

RECALL

MODE

•

•

MODE

RECALL

LASER

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

Emissivity display

Mode value display

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2-8 Raynger 3i Series Operator’s Manual

Activate button—Press the activate button to activate HAL, LAL, or TAM, or to tog­gle between DIG/ANA, or °C/°F, in the SET loop.

Backlight button and icon—The display has a backlight for working in low lighting
conditions. Press the backlight button to activate or deactivate the backlight. The
backlight icon is activated when the backlight is on. To save battery power, use the
backlight only when necessary. Note that if the battery voltage falls below 4.0 V, the
backlight will automatically turn off.

Low battery icon—The instrument is powered by four “AA” batteries. When the bat­tery voltage falls below 4.6 V, the low battery icon is activated.

Note: Turning off the backlight and laser will extend the battery life (refer to Table 2-1 for

battery life under various conditions).

Celsius/Fahrenheit icons—The °C and °F icons indicate which temperature scale has
been selected.

LOG button and icon—Press the LOG/RUN button while you have the trigger
pulled to toggle between the LOG and RUN loops. The LOG icon is activated when
the instrument is in the LOG loop.

Emissivity display—The emissivity display shows the emissivity value selected in
either the RUN, RECALL, or LOG loops.

▲▲

and ▼▼buttons—▲ increases and ▼ decreases the emissivity settings, DOI rate,

HAL or LAL set-points, TAM, or the LOG location number.

High and Low alarm icons—These are activated when the corresponding alarms are
activated. The HAL icon flashes and the buzzer sounds when measured temperature
is greater than or equal to HAL and HAL is active. The LAL icon flashes and the
buzzer sounds when the measured temperature is less than or equal to LAL and LAL
is active. Note that when a high or low alarm condition is met and the unit is sending
out RS232 data while in the Digital Output mode, the buzzer will make two tones: a
normal tone followed by a higher pitched tone.

Laser on/off button and LED—Press the laser button to activate or deactivate the
laser (RUN and LOG loops only). The laser LED is activated when the laser is activat­ed. (Not applicable for the scope sighting model.) Note that if the battery voltage
falls below 4.3 V, the laser will automatically turn off. Also, if the unit is in the LOCK
mode, the laser will go off when the trigger is released.

Temperature display—Shows the current temperature (while the trigger is pulled) or
the last temperature measured (when the RECALL button is pressed).

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Raynger 3i Series Operator’s Manual 2-9

Mode button—Press the mode button to change modes in any of the four loops.

Mode display and Mode value display—The Mode display shows the current mode

selected. The mode value display shows the temperature, set-point, or LOG location
value for the mode selected.

Recall button and icon—Press the RCL button to activate the RECALL loop. The
RECALL loop may be used to recall values from either the RUN or LOG loops. The
RCL icon is activated when the instrument is in the RECALL loop.

RUN button—Press the RUN/LOG button, when the trigger is pulled, to toggle
between the RUN and LOG loops.

Setup button and icon—Press the SET button to activate the SETUP loop. The
SETUP loop may be used to set values in either the RUN or LOG loops. The SET icon
is activated when the instrument is in the SET loop.

T

amb

icon—This is activated when the ambient temperature compensation function is

activated. This feature only affects readings in the RUN loop; readings in the LOG
loop are not affected.

Trigger lock icon—The small padlock is the trigger lock icon and is activated when
LOCK is pressed while the trigger is pulled. To unlock the trigger, simply press the
LOCK button again.

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2-10 Raynger 3i Series Operator’s Manual

2.4.3 Control System

The control system consists of four loops: SET, RUN, RECALL and LOG. The instru­ment may be cycled to any of the four loops by using the trigger or control panel but­tons, as shown below.

Figure 2-5: Control Loops

RUN

RUN

LOG

LOG

SET

RECALL

• Trigger released

• Press SET

(SET icon actuated)

RUN

RUN

LOG

LOG

SET

• Pull or lock trigger

• Press LOG

(LOG icon actuated)

SET Loop

RCL

LOG

SET

°C °F

( )

( )

HI

LO

T

amb

MODE

MODE

RECALL

ACTIVATE

ACTIVATE

•

•

LASER

LASER

LOCK

LOCK

press SET

Release trigger,

RCL

SET

LOG

RECALL

MODE

•

•

MODE

RECALL

HI

( )

LASER

LASER

( )

LO

°C °F

T

amb

ACTIVATE

ACTIVATE

LOCK

LOCK

LOG Loop

Release trigger,

•

•

Press

Pull trigger

(previously in LOG)

Release trigger,

press RECALL

Pull trigger

(previously in LOG)

•

•

Pull trigger

press SET

RUN

LOG

RUN Loop

RCL

LOG

HI

MODE

•

•

MODE

RECALL

( )

LASER

LASER

SET

LO

RUN

RUN

LOG

LOG

SET

RECALL

Pull trigger

RCL

LOG

•

MODE

HI

( )

LASER

LASER

SET

LO

RUN

RUN

LOG

LOG

SET

RECALL

RECALL Loop

°C °F

( )

T

amb

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

Release trigger,

press RECALL

°C °F

( )

T

amb

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

• Pull or lock trigger

• Press RUN

• Trigger released

• Press RECALL

(RCL icon activated)

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Raynger 3i Series Operator’s Manual 2-11

2.4.3.1 Control Loops

Each control loop has several modes, which are described in the following sections.

2.4.3.2 General Information

Before you begin using your portable instrument, you should be aware of the follow­ing general operating rules:

• The instrument goes to “sleep” (low power consumption, no display, no laser, no
backlight) after different times for each loop, as follows:

– SET Loop (after last button use): 10 seconds
– RUN Loop (after releasing the trigger): immediately
– RECALL Loop (after last button use): 10 seconds
_ LOG Loop (after releasing trigger): immediately

• The backlight can be turned on or off in any mode.

• The laser can be used only in the RUN and LOG loops.

• The trigger has two stages. The first stage is for measuring temperature. The sec­ond stage, when the trigger is pulled all the way in, is for storing temperature val­ues in the LOG loop.

• The °C or °F icon flashes when the instrument is measuring temperature in the
RUN or LOG loops. It does not flash when values are recalled.

• You can lock the trigger in the RUN loop and the LOG loop.

• You must release the trigger to go into the SET or RECALL loops.

• When you simultaneously press the MODE and ACTIVATE buttons while in the
RUN loop, the instrument is reset to the RUN loop factory default settings (stored
data is unaffected). In the LOG loop, pressing the MODE and ACTIVATE buttons
not only resets the instrument to its LOG loop factory default settings, but also
clears all previously stored data. In both cases, the instrument will “beep” after
reinstalling the default settings. Section 3.6 lists default setting for each model as
well as non-model-specific default settings and range values.

IMPORTANT

For the short wavelength units (e.g., 2 µm and below)—Avoid taking
temperature measurements in bright sunlight. High levels of ambient
light may produce apparently valid high-temperature readings when
no target is in the thermometer’s field-of-view.

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2.4.4 RUN Loop–To Measure Temperature

The RUN loop is for taking temperature measurements. Figure 2-6 illustrates the
RUN loop.

To take a measurement, do the following:

1. Point the instrument at the target.

2. Pull the trigger (press the RUN/LOG button, if necessary, so that the LOG icon is
not activated).

Figure 2-6: RUN Loop

2-12 Raynger 3i Series Operator’s Manual

RUN

RUN

LOG

LOG

SET

RUN

RUN

LOG

LOG

SET

MAX Mode

RCL

LOG

( )

HI

RECALL

MODE

•

•

MODE

RECALL

LASER

LASER

MODE

RCL

LOG

( )

HI

SET

( )

LO

ACTIVATE

SET

( )

LO

°C °F

T

amb

ACTIVATE

•

•

LOCK

LOCK

°C °F

T

amb

Current
temperature

MODE

Turn the trigger
lock ( ) on or off
with the Lock button

MODE

RUN

RUN

LOG

LOG

SET

The °C (or °F) icon
flashes when the
trigger is pulled

RUN

RUN

LOG

LOG

SET

MIN Mode

RCL

LOG

( )

HI

RECALL

MODE

•

•

MODE

RECALL

LASER

MODE

RCL

LOG

( )

HI

LO

LASER

LO

SET

°C °F

( )

T

amb

ACTIVATE

ACTIVATE

LOCK

LOCK

SET

°C °F

( )

T

amb

•

•

Change emissivity

RECALL

MODE

•

•

MODE

RECALL

LASER

LASER

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

with the ▲ and ▼
buttons in any mode

RECALL

MODE

•

•

MODE

RECALL

LASER

LASER

ACTIVATE

ACTIVATE

•

•

LOCK

LOCK

DIF ModeAVG Mode

TRIGGER

Pulled or Locked

BUTTON

RUN

LOOP ICON

None

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