30:1 ULTRA WIDE-RANGE IR THERMOMETER WITH “K” PORT USER’S MANUAL IRT730K Please read this manual carefully and thoroughly before using this product.
TABLE OF CONTENTS Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 What’s in the Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Product Overview . . . . . . . . . . . . . . . .
KEY FEATURES • Extremely wide measurement range • Adjustable emissivity • Laser targeting ring outlines analysis area • Port for included “K” type bead thermocouple probe or another “K” type probe • Releasing trigger holds measurement • Automatically stores last 100 readings for recall • Min/Max/Avg/Dif displays • Adjustable Hi and Lo temperature alarm setpoints • Large backlit LCD w/dual 4-digit readouts • Auto power off • °C/°F and laser on/off buttons • Low battery indicator • 3-year limited warranty SA
WHAT’S IN THE PACKAGE The IRT730K comes in a soft pouch inside a box along with a “K” type bead thermocouple probe, a “9V” battery and this user’s manual. PRODUCT OVERVIEW Fig. 1 shows all controls, indicators, connectors and other physical features of the IRT730K. Fig. 2 shows all possible indications on the unit’s LCD.
1. Scanning indication (flashes) 2. Emissivity setting 3. Laser pointer on 4. Backlight on 5. Operating in continuous measurement mode (not used) 6. Selected temperature unit 7. Difference value on secondary readout 8. Average value on secondary readout 9. Minimum value on secondary readout 10. Secondary readout 11. Low battery icon 12. Low alarm setpoint 13. Low alarm activated 14. High alarm activated 15. High alarm setpoint 16. “K” type probe reading on secondary readout 17.
OPERATING INSTRUCTIONS USING THE IRT TO MEASURE TEMPERATURE This section describes how to operate the IRT730K in its “normal” mode, with and without use of the backlight and/or laser pointer. In this mode (called REC mode), each measurement made by squeezing the measurement trigger is automatically stored (recorded) in a numerically tagged location in the instrument’s nonvolatile memory. After 100 measurements are stored, the 101st measurement made overwrites (erases) the first one.
To turn off the laser pointer, press the / button (Fig. 1, Callout 7) while squeezing and holding the measurement trigger. The icon (Fig. 1, Callout 3) will disappear from the top row of the LCD. To re-enable the laser pointer, press the / button while squeezing and holding the measurement trigger. To disable the LCD backlight, press the / button while the unit is powered on but not operating in scanning mode (i.e., the trigger has been released to replace SCAN by HOLD).
To move from one display mode to the next in the sequence, briefly press (but do not hold) the MODE button. ADJUSTING EMISSIVITY AND SETTING TEMPERATURE ALARMS The IRT730K has three parameters that you can set anywhere over a predefined range: 1. Emissivity (ε)—the ability of an object to reflect or absorb IR radiation (energy)—can be assigned any value between 0.10 and 1.00 in steps of 0.01. The default (factory setting) of ε is 0.95.
The High Temperature Alarm is activated when the temperature measured by the IRT is higher than the HAL setpoint. The Low Temperature Alarm is activated when the temperature measured by the IRT is lower than the LAL setpoint. In each case, the IRT730K responds by sounding a second chirp (following the usual first chirp to indicate that a measurement was made and stored) and flashing an icon on the bottom line of the LCD (Fig. 2, Callouts 13 and 14).
3. Press the MODE button as many times as necessary to enter REC mode. At this point, the values on the primary and secondary displays will be identical. 4. To recall the value stored just prior to the measurement that was just stored (with tag 83), press the °C/°F button once. The number 82 will appear briefly (for less than a second) on the secondary display, followed by the value of the measurement stored with tag 82. 5.
SPECIFICATIONS IRT Distance to Spot (D:S) Ratio 30:1 IRT Measurement Range -58° to 1472°F (-50° to 800°C) IRT Measurement Accuracy ±7.2°F (4°C) from -58° to 32°F (-50° to 0°C); ±1.5% of reading or ±3.6°F (2°C), whichever is greater, from 32° to 752°F (0° to 400°C); ±2% of reading or ±3.6°F (2°C), whichever is greater, from 752° to 1472°F (400° to 800°C) IRT Measurement Resolution 0.1° (F or C) below 1000°; 1° above 1000° IRT Emissivity Adjustable from 0.1 to 1.0 in 0.01 steps with default of 0.
If the temperature of the IRT’s target is higher than 1472°F (800°C)—the upper limit of the unit’s measurement range—or lower than -58°F (-50°C)—the lower limit of the measurement range—“OL” will appear on the main readout. The IRT730K cannot make accurate measurements if there is glass or plastic between it and the target. Clean the lens of the infrared sensor lens (Fig. 1, Callout 2) often—but never use a solvent. Abrupt temperature changes will cause condensation and possible vapor penetration.
RETURN FOR REPAIR POLICY Every effort has been made to provide you with a reliable product of superior quality.
To explain the relationship between D:S ratio and measurement accuracy, consider how the IRT730K would be used to measure the temperature of a small AC motor suspected of overheating. The motor measures approximately 1 ft x 1 ft, so it has an area of 1 ft2. If the IRT730K is used to make the measurement from 60 ft. away, the reading will have a large error. At this distance, the target area is 2 ft2.
APPENDIX II EMISSIVITIES OF COMMON MATERIALS Material Aluminum Asphalt Concrete Asbestos Ceramics Brass Brick Carbon Sludge Frozen Food Hot Food Ice Snow Human Skin Emissivity 0.30 0.95 0.95 0.95 0.95 0.50 0.90 0.85 0.94 0.90 0.93 0.98 0.90 0.98 Material Glass Iron Oxides Paint Plastic Paper Plaster Rubber Wood Textile Lead Marble Cloth (black) Sand Water Emissivity 0.90 to 0.95 0.78 to 0.82 0.80 to 0.95 0.85 to 0.95 0.70 to 0.94 0.80 to 0.90 0.95 0.90 0.94 0.50 0.94 0.98 0.90 0.
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