DeFelsko IRT1, IRT3 User manual

Infrared Thermometer

Instruction Manual

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Introduction

Introduction

The PosiTector Infrared Thermometer (IRT) is a hand-held
electronic instrument that measures surface temperature quickly
and accurately. It consists of a body (Standard or Advanced) and
probe (pg. 3).

Basic Operation

Basic Operation

Press the button to power up the Gage. To conserve battery
life, the gage will automatically go to sleep after 5 minutes of
inactivity. While in Sleep Mode, the gage powers up significantly
faster— convenient when moving between parts or locations. The
gage will completely power off after 4 hours of inactivity.
Alternatively, select Power Off from the main menu. All settings
are retained.

1. Remove the protective rubber cap from the probe.

2. Power-up Gage by pressing the center navigation button.

3. Verify emissivity setting and adjust if necessary (pg. 4).

The infrared temperature sensor immediately begins measuring.
Press the button to pause the measurement. Press again to
resume.

Typical Display

Emissivity (pg. 4)

SmartTrend Indicator -

Surface
Temperature

Appears when surface
temperature is rising or
falling. Does not appear
when measurement is
stable.

Battery Indicator

Temperature Unit

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Button Functions — Normal Operation

View Trend Chart
(Advanced only)

Access the Menu

Laser Pointer

Press the button to toggle the laser pointer on/off. The laser
helps aim the infrared temperature sensor. The symbol is dis­played on the screen when the laser is active.

Laser Radiation. Do not stare into beam. Class 2 laser product.

Laser Parameters:
Wavelength: 652 nm
Laser power for classification: <1.0 mW
Beam diameter: <2 mm at aperture
Divergence: 1 mRad
Mode of operation: CW
EN/IEC 60825-1:2014 (2007 USA)

Pause / Resume

Activate Laser Pointer

(Down Button)

Laser Active

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Menu Operation

To access the Menu, power-up the gage, then press the center
navigation button . Either the keypad or touch screen can be
used to navigate the menu. If desired, touch screen functionality
can be disabled within the Setup menu (See Touch, pg. 7).

Select a menu option by touching it, or use the and but­tons to highlight the desired option and press to select it.

On menus longer than one page, the current page number is
displayed below the menu name. Navigate between pages using

when the first menu item is selected, or when the last

menu item is selected. If using touch, navigate between pages
Press the button or swipe right to return to a previous screen.

by touching or , or by swiping up or down.
Select Exit to close the Menu.

When a Menu option is highlighted, the
icon indicates on-gage help is available.
Press or touch the icon to display the
help.

NOTE:

Update your gage to ensure that you

have the latest on-gage help information.

indicates that a sub-menu exists for the
Menu option. Select the option to display its
sub menu.

Probes

Probes

When powered-up, the PosiTector automatically
determines which probe is attached and does a self­check.

To disconnect a probe from a body, slide the plastic
probe connector horizontally (in the direction of the
arrow) away from the body. Reverse these steps to
attach a different probe. It is not necessary to power­down the Gage when switching probes.

The PosiTector gage body accepts a wide variety of probe types

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including magnetic, eddy current and ultrasonic coating thickness,
environmental, surface profile, shore hardness durometer, salt
contamination, and ultrasonic wall thickness probes.

Emissivity

Emissivity

Emissivity refers to a material’s ability to emit infrared energy,
compared to an ideal black surface at the same temperature. The
ratio varies from 0 to 1, and each material has a specific emissivity
associated with it. The PosiTector IRT has built in emissivity
settings for certain materials as well as a user-adjustable
emissivity option (pg. 6).

Most organic and painted surfaces have an emissivity of around

0.95, and are ideal surfaces for accurate infrared temperature
readings. Shiny or reflective surfaces can be difficult to measure
with an infrared thermometer, as they tend to reflect ambient
infrared energy instead of their own. To compensate for this, cover
such surfaces with flat paint or a piece of electrical tape. Allow the
paint or tape to acclimate to the surface’s temperature, and take a
measurement over the paint or tape.

Distance to Spot Ratio (D:S)

Distance to Spot Ratio (D:S)

The distance to spot ratio refers
to the relationship between the
diameter of the area being
measured compared to the
instrument’s distance from the
area. As the distance (D) from
the target increases, the spot

Distance

size (S) of the area being
measured by the unit becomes
larger. The D:S ratio of the
PosiTector IRT is 5.7:1. For
example, when the instrument is
100 cm (40 inches) from the
target, the spot size will be about
18 cm (7 inches) in diameter.

Spot Size

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Setup Menu

Setup Menu

Units

Converts the display from Celsius (°C) to Fahrenheit (°F) and vice
versa.

Reset

Reset (menu reset) restores factory settings and returns the Gage

to a known condition. The following occurs:

- All batches and stored readings, batch names and screen
captures are erased.

- Menu settings are returned to the following:

Memory = OFF
Statistics = OFF
HiLo Alarm = OFF
Trend Chart = None
Display = None

Bluetooth & Stream = OFF
WiFi & Access Point = OFF
USB Keyboard & Stream = OFF
BLE Keyboard = OFF

Perform a more thorough Hard Reset as follows:

1. Power down the Gage and wait 5 seconds.

2. Simultaneously press and hold the and buttons

until the Reset symbol appears.

This returns the Gage to a known, “out-of-the-box” condition. It
performs the same function as a menu Reset with the addition of:

- Bluetooth pairing info is cleared.

- Menu settings are returned to the following:

Units = Celsius
Touch = ON
Flip Lock = OFF
Auto Sync .net = ON
Sound = Medium
Language = English

Emissivity = 0.95
Battery Type = Alkaline
Backlight = Normal
Bluetooth Smart = OFF
USB Drive= ON

NOTE:

Date, Time and WiFi settings are not affected by either Reset.

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Gage Info

Displays information on the gage body and attached probe.

Trend Chart

Turns the trend chart on. The trend chart can also be turned on by
pressing the Up navigation button from the main screen.

Emissivity

Sets the emissivity ratio for the PosiTector IRT infrared
temperature sensor.

Select Custom to manually adjust the emissivity value or to adjust
to a known temperature. Emissivity is automatically calculated
when adjusting to a temperature.

See

NOTE

below.

Alternatively, use one of the following preset options:

Aluminum (rough) = 0.07 Plastics = 0.94
Zinc (Galvanized) = 0.25 Steel (Oxidized) = 0.95
Concrete = 0.54 Wood = 0.95
Paint = 0.96

Emissivity

Zinc Galv. 0.25

Steel Ox. 0.95
Al Rough 0.07
Concrete 0.54

Wood 0.95

Paint 0.96

Plastics 0.94

Custom

Exit

NOTE:

Depending on surface treatment, metals such as blasted steel can
have a broad range of emissivity values. Adjusting to a known
temperature (measured by a direct contact surface temperature
probe) on a representative sample will assist in obtaining an
accurate emissivity value.

Sound

Adjusts the volume of built-in speaker (Off, Low, Medium, High).

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Flip Lock

X

X

Disables the Auto Rotate feature by locking the display in its

current orientation.

Touch

Allows the touch screen functionality to be disabled. All gage
functions can also be controlled using the navigation buttons.

Set Clock

All measurements are date and time stamped (24-hour format)
when stored into memory. It is therefore important to set the
correct date and time. Use the and buttons to select a
value, and the and buttons to adjust it. The current date
and time setting can also be viewed at the top of the main menu.

Battery Type

Selects the type of batteries used in the Gage from a choice of
“Alkaline”, “Lithium” or “NiMH” (nickel-metal hydride rechargeable).
The battery state indicator symbol is calibrated for the selected
battery type. No damage will occur if the battery type used in the
Gage does not match the selected battery type.

Statistics Mode

Statistics Mode

Statistics

A statistical summary will appear on the
display. Reset Statistics by pressing the
button. Press to pause statistics.

– Average
– Maximum Value

– Standard Deviation
– Minimum Value

HiLo Alarm

Allows Gage to visibly and audibly alert the
user when readings exceed user-specified
limits.

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Memory Management

Memory Management

The PosiTector IRT has internal memory storage for recording
measurement data. Stored readings can be reviewed on-screen or
accessed via computers, tablets and smart phones. Each reading
is date and time-stamped. Press the button to store a
measurement.

The symbol appears when the Gage is set to store readings.

Standard models

store up to 1,000 readings in one batch.

Advanced models

“New Batch” closes any open batch and creates a new batch name
using the lowest available number. New batch names are date
stamped when they are created.

Scroll through display
modes (Advanced only)

Delete last reading

Access the Menu

Screen Capture

Press both and buttons simultaneously to save an image of
the current display. The last 100 screen captures are stored in
memory and can be accessed when connected to a computer
(see PosiSoft USB Drive below).

Accessing Stored Measurement Data

Accessing Stored Measurement Data

DeFelsko offers the following free solutions for viewing, analyzing
and reporting data:

PosiSoft USB Drive - Connect the Gage to a PC/Mac using the
supplied USB-C cable. View and print readings and graphs using
universal PC/Mac web browsers or file explorers. No software or
internet connection required.

PosiSoft Desktop - Powerful desktop software (PC/Mac) for
downloading, viewing, printing and storing measurement data.
Includes a customizable, templated PDF Report Generator. No
internet connection required.

store 250,000 readings in up to 1,000 batches.

Create a new batch
(Advanced only)

Activate Laser
Pointer (pg. 2)

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WiFi

USB

When USB Drive is enabled , the PosiTector gage uses a
USB mass storage device class which provides users with a
simple interface to retrieve stored data in a manner similar to
USB flash drives and digital cameras. USB Drive is also required
to import stored measurements into PosiSoft Desktop software
(pg. 9).

(Advanced models only)

NOTE:

USB-C cable. The batteries are not used and the body will not
automatically power down.

When enabled and connected to a computer, the PosiTector will be
recognized as a Keyboard. Readings are sent to the computer as
they are taken, emulating keystrokes, followed by a carriage return.

Stream individual readings to a USB connected computer via a
serial protocol. Ideal for use with serial compatible SPC data
collection software.

While connected, power is supplied through the included

Keyboard

Stream

NOTE:

(Advanced models only)

(Advanced models only)

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The above WiFi, USB and Bluetooth menus contain a Sync .net
Now option. When selected, the Gage immediately synchronizes

stored measurement data via its respective communication
method (internet connection required). Alternatively, select Auto
Sync .net from within the USB connect menu to automatically
synchroniz e upon connection to a PC. Additional measurements
added to memory while connected are synchronized only when the
USB cable is disconnected and reconnected, or when the Sync
.net Now option is selected. WiFi connected gages automatically
attempt synchronization upon power-up.

NOTE:

connection to synchronize measurements with PosiSoft.net.

PosiSoft Desktop is required when using a USB

Bluetooth

Bluetooth Smart

Allows communication with a smart device running the
PosiTector App (pg. 9) via auto-pairing Bluetooth Smart (BLE)
wireless technology.

Sync Batches

Select batches to flag them for synchronization to the PosiTector
App. Sync Batches is useful when connecting a new device to a
gage with pre-existing batches, since only batches created while
Bluetooth Smart is enabled are automatically selected.

Selected batches are synchronized when the next reading is
taken in a batch flagged for synchronization, or when the Sync
Batches option is selected at the bottom of the list of selected
batches.

NOTE:

from batches selected in the Sync Batches menu are held in a
queue until communication with the PosiTector App is re­established.

If Bluetooth Smart is disabled or disconnected, data

(Advanced models only)

(Advanced models only)

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Send Batches

Transfers selected batches to the PosiTector App. Send Batches
is useful when switching between devices, as only readings and
batches that have yet to be synchronized with any smart device
are synchronized automatically.

The Send Batches option is visible in the menu when the Gage
is connected to a smart device running the PosiTector App.

BLE Keyboard

When enabled and connected to a computer, the PosiTector will
be recognized as a wireless Keyboard. Readings are sent to the
computer as they are taken, emulating keystrokes, followed by a
carriage return.

WARNING:

update. All stored measurements will be erased from memory.

The Gage will perform a Hard Reset (pg. 5) after an

(Advanced models only)

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Specifications

Range Accuracy Resolution

Temperature

Range

Laser Pointer Class 2 < 1mW

Distance to Spot Ratio (D:S) 5.7:1

Emissivity Adjustab le

Response Time <500 µs (95% response )

Spectral Response 2 - 14 µm

–70˚ to 380˚ C

–94˚ to 716˚ F 0.1˚ F

.

±

1˚C + 1%

@ 23˚ C ambient

0.1˚ C

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Product Labeling

Product Labeling

Product Model

Hazard Warning and

Explanatory Label

Aperture

LASER LIGHT DO NOT STARE INTO BEAM

Class 2 laser product

652 nm < 1mW CW

EN/IEC 60825-1-2014 (2007 USA)

serial number

Manufacturer’s Identification
and certification label

Complies with FDA
performance standards for
laser products except for
deviations pursuant
to Laser Notice No. 50,
dated June 24, 2007

DeFelsko Corporation
800 Proctor Avenue
Ogdensburg, New York
13669-2205 USA

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Laser Precautions:

procedures other than those specified herein may result in
hazardous radiation exposure.

Do not open or modify the product. There are no user serviceable
components within the product; any service or repair is to be
performed only by DeFelsko Corporation personnel. No scheduled
maintenance is necessary to maintain product in compliance with
laser safety standards.

To prevent eye damage and personal injury:

n

Read all safety information before you use the product.

n

Do not use the product if it operates incorrectly.

n

Do not use the product if the housing appears cracked
or otherwise damaged.

n

Use the product only as specified.

n

Do not look into the laser. Do not point the laser directly
or indirectly (off reflective surfaces) at persons.

Use of controls or adjustments or performance of

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