General Tools and Instruments IRT659K - Manual (Page 11)

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2) Press the IR/K (TC) button (Fig. 1, Callout I). Note that this causes the
IRT LOG information on the bottom line of the LCD to disappear and
disables the MODE/SET and
ĵ
LOG buttons.
3) Attach the end of the probe to the surface whose temperature you wish to
measure. The measured value will appear on the main readout.
If you allow the IRT659K’s 30-second Auto Power Off function to activate with
the unit in thermocouple measurement mode, when you power the unit back on
it will enter IRT measurement mode.
FULL SPECIFICATIONS
Distance-to-Spot (D:S) Ratio 12:1
IR Temperature Measurement Range -58° to 1202°F (-50° to 650°C)
IR Temperature Measurement Accuracy ±3°F (2°C) or ±2% of reading (whichever is
greater) above 32°F (0°C); ±4°F (3°C) or
±3% of reading (whichever is greater)
below 32°F
“K” Port Measurement Range -146° to 2498°F (-99° to 1370°C)
“K” Port Measurement Accuracy ±(1% of reading + 1°C) above 0°C;
±(2% of reading + 2°C) below 0°C
Included “K” Type Thermocouple 0° to 500°F (-18° to 260°C)
Measurement Range
Display Resolution (IR or TC Measurement) 0.1° (F or C)
Emissivity Adjustable from 0.1 to 1.0 in 0.01 steps,
with default of 0.95
Automatic Measurement Storage Capacity Last 10 readings
Display Size & Type 1.5 in. (38mm) diagonal backlit LCD
Response Time 500 ms
Laser Pointer Wavelength 655nm
Laser Power Class 3R (<3mW)
Current Consumption 30mA, max
Operating Temperature 32° to 104°F (0° to 40°C) @ 10 to 75% RH,
non-condensing
Storage Temperature -4° to 140°F (-20° to 60°C)
Auto Power Off Trigger 30 seconds of inactivity