Greenlee TG-1000 Infrared Thermometer

Introduction

The Greenlee TG-1000 Infrared Thermometer is a hand-held surface temperature sensing device. Its non-intrusive measuring capability is safer and quicker than other methods and is well-suited for checking the surface temperature of circuit breakers, motors, HVAC/R equipment, engines, etc. This device measures surface temperature by gathering three forms of infrared energy — emitted, transmitted, and reflected — from an object and translating that energy into a temperature.

Features:

• Laser sighting: Indicates the approximate center of the measurement area.
• User-adjustable high and low temperature alarms.
• Automatic recording of maximum, minimum, difference, and average temperatures.
• Lock mode: Allows long-term measurements without holding the trigger. The laser is turned off in Lock mode unless the trigger is held down.

Purpose of this Manual

This instruction manual is intended to familiarize all personnel with the safe operation and maintenance procedures for the Greenlee TG-1000 Infrared Thermometer. Keep this manual available to all personnel.

Do not discard this product or throw away! ♻️

Important Safety Information

Safety is essential in the use and maintenance of Greenlee tools and equipment. This instruction manual and any markings on the tool provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety information provided.

Safety Alert Symbol Definitions

⚠️ SAFETY ALERT SYMBOL: Used to call attention to hazards or unsafe practices which could result in injury or property damage. The signal word indicates the severity of the hazard.

? DANGER: Immediate hazards which, if not avoided, WILL result in severe injury or death.

⚠️ WARNING: Hazards which, if not avoided, COULD result in severe injury or death.

❗ CAUTION: Hazards or unsafe practices which, if not avoided, MAY result in injury or property damage.

General Warnings

⚠️ WARNING: Read and understand this material before operating or servicing this equipment. Failure to understand how to safely operate this tool could result in an accident causing serious injury or death.

Specific Hazards

⚡ Electric shock and ? fire hazard:

• Do not expose this unit to rain or moisture.
• Do not use the unit if it is wet or damaged.
• Use this unit for the manufacturer's intended purpose only, as described in this manual. Any other use can impair the protection provided by the unit.

Failure to observe these warnings could result in severe injury or death.

⚡ Electric shock hazard:

• Do not open the case, except for the battery compartment.
• Before opening the case, release the trigger and shut off the unit.

Failure to observe these warnings could result in severe injury or death.

Medical Applications Warning:

This unit is not intended for medical applications.

Failure to observe this warning could result in severe injury or death.

☢️ Laser Hazard:

CAUTION: LASER RADIATION—DO NOT STARE INTO BEAM. Max. Output <1 mW, Wavelength: 635-660 nm. Complies with 21 CFR, Chapter 1, subchapter J. CLASS II LASER PRODUCT.

• Avoid laser exposure.
• Do not point laser directly at eye or at reflective objects.

Failure to observe these precautions may result in injury.

⚡ Electric shock hazard:

• Do not attempt to repair this unit. It contains no user-serviceable parts.
• Do not expose the unit to extremes in temperature or high humidity. Refer to “Specifications.”

Failure to observe these precautions may result in injury and can damage the unit.

❗ CAUTION:

• Temperature readings will be inaccurate on highly reflective objects.
• Temperature readings will be inaccurate on objects if emissivity is not adjusted properly. Follow masking and emissivity adjustment procedures.
• Allow 30 minutes for the unit to adjust to large changes in ambient temperature; inaccurate readings can result.
• Clean lens periodically; inaccurate readings can result. Refer to the “Maintenance” section.

Failure to observe these precautions may result in injury and can damage the unit.

Important Notes

ℹ️ IMPORTANT:

• Using this unit near equipment that generates electromagnetic interference can result in unstable or inaccurate readings.
• Protect the unit against static electricity.

CE Certification

This instrument conforms to the following standards:

• EN50081-1:1992, Electromagnetic Emissions
• EN50082-1:1992, Electromagnetic Susceptibility

Readings may be affected if the unit is operated with a radio frequency electromagnetic field of approximately 3 volts per meter, but the performance of the instrument will not be permanently affected.

CFR Compliance

CFR 21 1040.10 and 1040.11: Performance Standards for Light-Emitting Products.

Identification

Parts of the Unit

The Greenlee TG-1000 Infrared Thermometer has the following parts:

1. Display
2. Decrease button and °C/°F selector
3. Mode selector
4. Increase button and Lock button
5. Trigger
6. Battery compartment door
7. Lens
8. Laser

Display Icons

The LCD display uses the following icons:

• 10. Hold mode indicator
• 11. Full battery indicator
• 11A. Low battery indicator
• 11B. Dead battery indicator
• 12. Laser ON indicator
• 13. Backlight ON indicator
• 14. Celsius or Fahrenheit indicator
• 15. Lock mode indicator
• 16. Temperature indicator
• 17. Mode value indicator
• 18. Mode indicator

Symbols on the Unit

• ⚠️ Warning—Read the instruction manual.
• ♻️ Recycle product in accordance with manufacturer's directions.
• ☢️ Laser radiation is emitted from this unit.

Operation

Basic Features

• To turn the laser on or off: Press and hold the trigger, and then momentarily press the ?️ °C/°F button.
• To turn the backlight on or off: Press and hold the trigger, and then momentarily press the ? Lock button.
• To change between Celsius and Fahrenheit: If the LCD is blank, press and release the trigger. Momentarily press the ?️ °C/°F button.
• To lock the trigger for continuous measurement: If the LCD is blank, press and release the trigger. Momentarily press the ? Lock button. Momentarily press the ? Lock button again to return to normal measurement. The unit will automatically exit Lock mode after 60 minutes.

Advanced Features

Press the Mode button to access the advanced features. They appear in this order: Emissivity Display (E), Emissivity Setting (↓↑), Maximum (MAX), Minimum (MIN), Difference (dIF), Average (AVG), High Alarm Limit (HAL), and Low Alarm Limit (LAL).

Setting Alarm Points

After selecting the HAL or LAL mode, use the ?️ °C/°F or ? Lock button to set the alarm point. A tone will sound if the temperature is higher than or lower than the corresponding set point.

Measurement Review

After the unit shuts off, press Mode to review the measurement:

• MAX — the highest recorded temperature among all of the readings.
• MIN — the lowest recorded temperature among all of the readings.
• dIF — the difference between the maximum and minimum readings.
• AVG — a weighted rolling average of all of the readings.

Note: Values for MAX, MIN, dIF, and AVG are reset each time the trigger is pressed.

Note: The AVG feature acts as a filter to eliminate fluctuations from the temperature readings. It is not an arithmetic mean, but rather a rolling weighted average of the readings that smoothes the data and excludes sudden spikes.

Limitations

• The thermometer cannot measure through transparent objects, such as glass or plastic. It will measure the surface temperature of the glass or plastic.
• Steam, dust, smoke, or other particles can prevent accurate measurement by obstructing the unit's infrared sensor.

Locating a Hot Spot

To find a hot spot, aim the thermometer outside the area of interest, and then scan across with an up and down motion.

Distance from Target

Thermometers measure the surface temperature of an object by sensing its emitted, reflected, and transmitted energy. The sensor collects this energy from the area being measured (spot size). The spot size varies as the distance to the target changes. The farther the distance from the area being targeted, the larger the spot size.

When determining the appropriate distance from the object, the spot size must be somewhat smaller than the target area. When accuracy is critical, the spot size should be half as large as the target. If the spot size is larger than the target size, the thermometer will pick up the temperature of the background, resulting in inaccurate readings.

Diagram Explanation:

Object 1: The thermometer is at the correct distance from the unit. The target is slightly larger than the spot size being measured.

Object 2: The thermometer is too far away. The thermometer measures the background because the target is smaller than the instrument's spot size, which can result in an inaccurate reading.

Distance to Spot Size

The distance to spot size is a ratio that provides the appropriate distance to the target. The nominal distance-to-spot-size (D:S) ratio for TG-1000 is 12:1.

Distance (D) to Spot size (S): D:S=12:1

Examples include: 6.67in@80in, 3in@36in, 2in@24in, 0.17m@2m, 0.08m@1m, 0.05m@0.6m. This represents the Nominal Spot Diameter at 90% Energy.

Typical Measurements

The TG-1000 is suitable for various applications:

Electronics

Measure surface temperatures of electronic components.

Power Distribution

Check temperatures of electrical panels and connections.

HVAC

Measure temperatures of air conditioning units and ductwork. For accurate readings on lines, ensure a minimum width of 25 mm (1"). Measurements are for non-insulated lines.

Troubleshooting

Emissivity

Emissivity is the ability of an object to emit infrared energy. Most objects or surfaces have an emissivity value of about 0.95. Some objects, such as polished or shiny metallic surfaces, may have much lower emissivity. Using an infrared thermometer to measure the temperature of such objects will produce inaccurate results.

❗ CAUTION:

• Temperature readings will be inaccurate on highly reflective objects.
• Temperature readings will be inaccurate on objects if emissivity is not adjusted properly. Follow masking and emissivity adjustment procedures.

Failure to observe these precautions may result in injury and can damage the unit.

Masking a Surface to Determine Emissivity

To determine the effect of emissivity on the measurement, cover the surface with masking tape or flat black paint. (Be sure to use tape or paint that can withstand the anticipated temperature.) The emissivity of both these materials is about 0.95. Allow time for the tape or paint to reach the temperature of the material underneath. Measure the covered area and a nearby area. The readings should be about the same. If they are not, the emissivity may affect your measurements.

Compensating for Emissivity

• If the temperature of the surface is known, adjust the emissivity until the unit agrees with the known temperature.
• If the material of the surface is known, adjust the emissivity according to the Common Emissivities table on the following page.
• Otherwise, mask the surface as described above. Measure temperature of the masked area with emissivity set at 0.95. Measure temperature of unmasked surface and adjust emissivity until temperatures agree. Write down emissivity value for future readings on this surface.

Accuracy

Accuracy Table for Infrared Sensor

Specifications

• Display: 4-digit LCD (999.9 or 9999 maximum display)
• Response Time: 1 second, 90% response
• Temperature Range: Infrared Sensor: -60 °C to 550 °C (-76 °F to 1022 °F)
• Spectral Response: 8 to 14 µm
• Repeatability: ± 0.5% of reading or ± 1 °C (± 2 °F), whichever is greater
• Emissivity: 0.10 to 1.0, digitally adjustable
• Ambient Operating Temperature Range: 0 °C to 50 °C (32 °F to 122 °F)*
• Relative Humidity: 10% to 90% (non-condensing) at < 30 °C (86 °F) ambient temperature
• Altitude: 2000 m (6500') maximum
• Storage Conditions: -10 °C to 60 °C (14 °F to 140 °F)*. Remove batteries.
• Battery: Two 1.5 volt batteries (AAA, NEDA 24A or IEC LR03)

* For improved accuracy, allow unit 30 minutes to adjust to large change in temperature.

Statement of Conformity

Greenlee Textron Inc. is certified in accordance with ISO 9001 (2000) for our Quality Management Systems. The instrument enclosed has been checked and/or calibrated using equipment that is traceable to the National Institute for Standards and Technology (NIST).

Maintenance

⚡ Electric shock hazard:

Do not attempt to repair this unit. It contains no user-serviceable parts. Failure to observe this precaution may result in injury and can damage the unit.

Battery Replacement

1. Slide the door down and away from the handle.
2. Replace the batteries (observe polarity).
3. Close the battery compartment door.

Cleaning

Lens

1. Blow off loose particles using clean compressed air.
2. Gently brush any remaining debris away with a camel hair brush or soft cloth.
3. Carefully wipe the surface with a water-moistened cotton swab.

Note: Do not use solvents!

Housing

Periodically wipe the housing with a damp cloth and mild detergent; do not use abrasives or solvents.

Lifetime Limited Warranty

Greenlee Textron Inc. warrants to the original purchaser of these goods for use that these products will be free from defects in workmanship and material for their useful life, excepting normal wear and abuse. This warranty is subject to the same terms and conditions contained in Greenlee Textron Inc.'s standard one-year limited warranty.

For items not covered under warranty (such as items dropped, abused, etc.), a repair cost quote is available upon request.

Note: Prior to returning any test instrument, please check replaceable batteries or make sure the battery is at full charge.