![General IRT657 User Manual Download Page 12](http://html1.mh-extra.com/html/general/irt657/irt657_user-manual_2210197012.webp)
SPECIFICATIONS
Measurement Range
-40° to 1076°F (-40° to 580°C)
Distance-To-Spot (D:S) Ratio 12:1
Measurement Accuracy
±3°F (2°C) or ±2% of reading
(whichever is greater) for readings
above 32°F (0°C); within ±5°F (3°C) or
±2% of reading (whichever is greater)
for readings below 32°F (0°C)
Measurement Repeatability
1% of reading or 1°
Response Time
250 msec for 95% response
Emissivity
Fixed at 0.95
Laser Class/Power/Wavelength Class 3R<3mW/655nm
Functions Controllable
°F/°C temperature unit, backlight
from Front Panel
on/off, laser pointer on/off
Auto Power Off Trigger
Inactivity for 7 seconds
Current Consumption
<30mA, max
Battery Life
50 hours (typical), w/backlight and
laser pointer off
Operating Temperature
32° to 104°F (0° to 40°C)
@ <75% relative humidity (RH)
Storage Temperature
-4° to 140°F (-20° to 60°C)
@<85% RH
Power Source
One 9V battery
Dimensions
6.9 x 3.6 x 1.5 in.
(175.3 x 92.1 x 38.1mm)
Weight
5.93 oz. (168g)
12