General IRT205 - 8:1 Infrared Thermometer Manual

Please read these instructions carefully and thoroughly before using the product.

INTRODUCTION

Using an optical resolution (distance-to-spot ratio) of 8:1, the gun-style instrument measures the surface temperature of a surface or object from a distance by using an infrared (IR) sensor to quantify its thermal radiation. This noncontact measurement capability allows you to safely determine the temperature of very hot or cold surfaces (from -4º to 536ºF/-20º to 280ºC), inaccessible or hard-to-reach objects, and toxic substances. A red laser pointer pinpoints the target area being measured. Readings, in ºF or ºC, are displayed on a backlit LCD.

WHAT'S IN THE PACKAGE

The IRT205 comes on a blister-packed card with two "AAA" Alkaline batteries in a cavity on the back.

PRODUCT OVERVIEW

Fig. 1 shows the key components of the IRT205. Fig. 2 shows all possible display icons and indications. Use Fig. 1 to familiarize yourself with the position and function of all components before moving on to the safety, setup and operating instructions.

Fig. 1. The IRT205's key components

1. Red laser pointer exit
2. Infrared sensor
3. Measurement trigger
4. Battery compartment (contains an ºF/ºC switch)
5. Backlit LCD (see Fig. 2)
6. Laser safety/identification/ warning label (closeup below)
   

Fig. 2. All possible display indications

1. Low battery charge indicator (replace both batteries when it appears)
2. Laser pointer "on" icon (with trigger pulled)
3. Indicates that temperature readouts are in ºF
4. Indicates that temperature readouts are in ºC
5. Temperature readout
6. Indicates operation in scan mode (with the trigger squeezed)
7. Indicates last reading is being held (after the trigger has been released)

SAFETY INSTRUCTIONS

• The IRT205's Class II laser pointer emits less than 1mW of radiation. However, avoid looking directly at the laser, and never point it at people or animals. Eye protection is normally afforded by the blink reflex.
• Do not operate the IRT205 in explosive environments containing flammable liquids, gases or dust.

SETUP INSTRUCTIONS

INSTALL BATTERIES

The IRT205 is ready to use after you install the two included "AAA" batteries. To open the battery compartment, place the tips of your thumb and index finger in the cutouts on the side of the compartment cover and pull to swing it down. Install the batteries in series according to the polarity marks on the inside of the compartment. Then swing the cover up and snap it shut.

OPERATING INSTRUCTIONS

To make a temperature measurement, squeeze the trigger (Fig. 1, Callout C) to activate the laser pointer and aim it at a target surface. This causes the word SCAN to appear on the LCD, along with the temperature of the current target. Releasing the trigger changes SCAN to HOLD and "freezes" the readout at the temperature of the current target for seven seconds. After seven seconds, the IRT205 (including the laser pointer) automatically powers off to extend battery life. The seven-second hold enables you to take the temperature of surfaces you cannot see (under or behind objects, for example) and then read the display after returning the gun to eye level.

To change the displayed measurement unit from ºF to ºC, open the battery compartment (as described above), remove the batteries, and move the switch inside the compartment from the factory-set ºF position to the ºC position (see photo below). Then re-install the batteries and swing the compartment door up until it snaps shut.

OPERATING & MAINTENANCE TIPS

• The display will indicate OH if the temperature of a target is above 536ºF (280ºC), and OL if its temperature is below -4ºF (-20ºC).
• To avoid having old or unused batteries leak acid and ruin the instrument, remove both batteries when you do not expect to use the IRT205 for a long period of time (several months).
• Clean the infrared sensor lens (Fig. 1, Callout B) often with compressed air or a moist cotton cloth. Never use a solvent or an abrasive cleaner.

SPECIFICATIONS

• Measurement range: -4º to 536ºF (-20º to 280ºC)
• Measurement accuracy: ±3.6ºF (±2ºC) or ±2% of reading(whichever is greater) above 32ºF (0ºC); ±5.4ºF (±3ºC) or ±2% of reading (whichever is greater) below 32ºF (0ºC)
• Measurement resolution: 0.1º (F or C)
• Distance-to-spot (D:S) ratio: 8:1
• Emissivity: 0.95 (fixed)
• Display: 4-digit backlit LCD measuring 1 x 7/8 in., with 7/16 in. high digits
• Auto power off: 7 seconds after trigger release
• Laser output: <1mW (Class II) @ wavelength of 650nm
• Power source: Two "AAA" Alkaline batteries (included)
• Typical battery life: >3,000 measurements
• Operating temperature: 32º to 104ºF (0º to 40ºC)
• Storage temperature: 14º to 140ºF (-10º to 60ºC)
• Dimensions: 5 x 4 x 1.3 in. (128 x 102 x 32mm)
• Weight: 2.43 oz. (69g)