User Manual IRT227 12:1 IR Thermometer with Type K Introduction Congratulations on your purchase of the Triplett Model IRT227 Mini IR Thermometer. The IRT227 IR thermometer measures and displays non-contact (infrared) temperature readings and ambient air temperature. In addition, the Type K thermocouple provides contact temperature measurements. The built-in laser pointer increases target accuracy while the backlit LCD and handy push-buttons combine for convenient, ergonomic operation.
Safety International Safety Symbols This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information Warnings Do not directly or indirectly point the laser at the eyes of a person or an animal o Inspect for damage or for any shortage of parts or accessories before use o Replace the battery immediately after the battery indicator flashes o Do not connect an external probe to live electrical circuits o Do not submerge in water o Do not leave the thermom
Description Meter Description 1. 2. 3. 4. 5. 6. 7. 8. 9. LCD Display Control Buttons Lanyard Type-K Thermocouple input jacks Battery compartment (9V) Measurement Trigger IR Thermometer lens Ambient temperature sensor Laser pointer lens Display Description .888.610.7664 15 10 20 0 30 5 25 www.calcert.com sales@calcert.
Operation Meter Power The meter is powered by one 9V battery located in the meter handle. Refer to the Maintenance section for replacement instructions. The displayed battery icon provides battery status. Replace the battery as soon as the battery status icon flashes. Non-Contact IR Surface Temperature Measurements The IRT227 thermometer remotely measures the surface temperature of an object. The emissivity must be properly set to obtain optimum accuracy (see the Emissivity section for details).
4. When finished, release the Trigger; the symbol H will appear and the ambient air temperature reading will hold for 10 seconds. Contact Thermocouple (Type-K) Temperature Measurements To avoid electrical shock or personal injury, do not connect the external probe to live electrical circuits. 1. Plug the Type-K thermocouple sensor into the sub-miniature jacks at the bottom of the instrument (one plug spade is wider than the other). 2. Pull the trigger to power the meter.
Distance to Spot Ratio (Field of View) The meter’s field of view is 12:1 (distance to spot ratio). For example, if the meter is 24 inches from the target (spot), the diameter of the target must be at least 2 inches. Other distances are shown below in the field of view diagram. Note that measurements should normally be made < 2 feet from the target. The meter can measure from further distances but the measurement may be affected by external sources of light.
Emissivity The Emissivity setting is shown in small digits at the lower left corner of the display. To adjust the Emissivity please refer to the Settings mode section. Emissivity represents the reflectivity of a material. Most organic materials and painted or oxidized surfaces have an emissivity of approximately 0.95. If possible, masking tape or flat black paint should be applied to cover the measured surface.
Marble 0.94 Chromium Oxides 0.81 Plaster 0.80 to 0.90 Copper Oxides 0.78 Mortar 0.89 to 0.91 Iron Oxides 0.78 to 0.82 Brick 0.93 to 0.96 Textiles 0.90 High and Low Temperature Alarms The IRT227 has a low alarm and a high alarm utility. Set the low and high alarm limits in the Settings mode. See the Settings mode section for details. The low and/or the high alarms can also be disabled in the Settings mode.
is shown. Pull the trigger to return to the normal operating mode. The display (smaller digits lower right) will reflect the selected mode. Backlight – ON/OFF Press the trigger and release. Use the M button to step to the LitE display. Press the SET button to select oN or oFF. Pull the trigger to return to the normal operating mode. Laser – ON/OFF Pull the trigger and release. Use the M button to step to the LAS display. Use the SET button to select oN or oFF.
Selecting the Temperature Unit of Measure (°C/°F) Pull the trigger and release. Use the M button to step to °C/°F. Use the SET button to select °C or °F. Pull the trigger to return to the normal operating mode and the alarm buzzer will sound (if ‘bU2’ is set to ON). Setting the Alarm Buzzer ‘bU2’ ON/OFF Pull the trigger and release. Use the M button to step to ‘bU2’. Use the SET button to select ON or OFF. Pull the trigger to return to the normal operating mode.
Maintenance To clean the lenses, use compressed air to clear dust and other particles, then carefully clean with a wet cotton swab. The cotton swab should be moistened with clean water. To clean the meter housing, wipe with a damp, soft cloth. Do not use solvents or abrasives. Do not immerse the IRT227 in water or other liquid.
Battery Replacement When the battery icon flashes, or when the meter doesn’t switch ON, replace the battery: The battery compartment is located in the hand grip. The battery compartment lid is located just below the trigger. Open the battery door by prying with a thumb or finger at one of the indentations near the top of the hand grip. The door is hinged at the bottom of the hand grip. The battery should be installed with the positive + terminal (smaller contact) facing the meter to ensure correct polarity.
Specifications Temperature Specifications Temperature Mode Object (Surface Mode) Range -4 ~ 1112°F(-20 ~ 600˚C), Accuracy ± 4.1°F(2.4˚C) from -4 ~ 1112°F(-20 ~ 600˚C), Ambient (Air) Thermocouple (Type K) -4 ~ 158°F (-20 ~ 70°C) -58 ~ 1832°F (-50 ~ 1000°C)* ± 3.9°F (2.2°C) from 5 ± 3.6°F (2.0°C) ± 4.1°F (2.4°C) from -58 ~ 212°F ~ 32°F (from -4 (-50°C ~ -100°C) 15°C ~ 0°C) ~ 158°F (-20°C ~ 70°C) ± 3.6°F (2.0°C) from 32 ~ 212°F (0°C ~ 100°C) ± 3%rdg + 1.
* The supplied thermocouple is rated for 482oF (250oC) maximum temperature. To measure higher temperatures, please obtain a Type-K thermocouple rated for the desired temperature. General Specifications Display Backlit multifunction LCD display Display update rate < 1 second approx. o o o o Operating Temperature 32 F ~ 122 F (0 C ~ 50 C) Operating Humidity 10 ~ 80% Relative Humidity max.
