Extech IRC350 Operating Manual

User Guide

Infrared Calibrator

Model IRC350

Introduction

Congratulations on your purchase of the Extech IRC350 Infrared Calibrator. This easy to
use portable calibrator can be used to accurately calibrate Infrared (IR) thermometer
devices. This instrument is shipped fully tested and calibrated and, with proper use, will
provide years of reliable and accurate calibration of temperature sensors and devices.

Features

 2.3” (58mm) diameter target assembly and dry-well temperature system controlled

by microcomputer

 Metal cone external reference thermometer with nominal heat-conducting ability
 Oxide film, surface thermometer with an Emissivity of 0.95.
 Class-A, platinum 100 ohm (PT100) RTD temperature sensor
 Rapid heating and cooling (fan) functions
 °C /°F selectable units
 Calibration temperature range of 122°F to 662°F (50°C to 350°C).
 0.1° temperature display and stability resolution

Warranty

EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument

to be free of defects in parts and workmanship for one (1) year from date of shipment (a
six month limited warranty applies to 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 [phone] ext. 210 for authorization or visit our
website www.extech.com for contact information. 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.

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Model IRC350 Version 4.0 06/08

Safety

• BURN HAZARD – Use extreme caution when the unit is powered on. Do not touch the
IR target surface; the IR target surface temperature is the same temperature as that
shown on the display.The sheet metal at the top of the instrument may also exhibit
extreme temperatures for areas close to the IR target surface

• DO NOT turn off the instrument at temperatures higher than 212°F (100°C).

• DO NOT connect and operate this unit without a properly grounded, properly polarized

power cord

• HIGH VOLTAGE is used in the operation of this equipment. Severe injury or death

may result if personnel fail to observe safety precautions. Before working inside the
equipment, turn the power off and disconnect the power cord

• DO NOT place this instrument under a cabinet or other structure. Overhead clearance

is required

• DO NOT operate near flammable materials

• DO NOT leave this instrument unattended when in use

• This instrument is intended for indoor use only

• DO NOT use this instrument for any applications other than those described in this

User Guide

Cautions

• Components and heater lifetime can be shortened by continuous high temperature

operation

• DO NOT use liquids to clean the target surface

• DO NOT adjust the values of the calibration constants from the factory set values. The

correct setting of these parameters is important to the safety and proper operation of
the calibrator. Call the Customer Care department if inadvertent changes to the
programming have been made

• Operate the instrument between 5 and 35°C (41 to 95° F)

• Allow at least 6 inches of space between the instrument and nearby objects

• Avoid vibrations in the calibration environment

Environmental conditions

Although the instrument has been designed for optimum durability and trouble-free
operation, there are some precautions that should be taken. The instrument should not be
operated in an excessively dusty or dirty environment. Maintenance and cleaning
recommendations can be found in the Maintenance section of this User Guide.

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Model IRC350 Version 4.0 06/08