Extech Instruments EX845 User Manual page 6

Function Range and Resolution
Temperature
(type-K)
Temp (IR)
General Specifications
Clamp jaw opening
Display
Continuity check
Diode test
Low Battery indication
Over-range indication
Measurement rate
PEAK
Thermocouple sensor
IR Spectral response
IR Emissivity
IR distance ratio
Input Impedance
AC bandwidth
AC response
Crest Factor
Operating Temperature
Storage Temperature
Operating Humidity
Storage Humidity
Operating Altitude
Battery
Auto power OFF
Dimensions & Weight
Safety
o
-4 to 1400 F
o
-20 to 760 C
-58 to -4°F
-4 to 518°F
-50 to -20°C
-20 to 270°C
1.7" (43mm) approx.
3-3/4 digits (4000 counts) backlit LCD
Threshold 40Ω; Test current < 0.5mA
Test current of 0.3mA typical;
Open circuit voltage < 3VDC typical
Battery symbol is displayed
'OL' display
2 readings per second, nominal
Captures peaks >1ms
Type K thermocouple required
6 to 16µm
0.95 fixed
8:1
10MΩ (VDC and VAC)
50 to 400Hz (AAC and VAC)
True rms (AAC and VAC)
3.0 in 40A and 400A ranges, 1.4 in 1000A range (50/60Hz and 5% to 100% of
range)
41°F to 104°F (5°C to 40°C)
-4°F to 140°F (-20°C to 60°C)
Max 80% up to 87°F (31°C) decreasing linearly to 50% at 104°F(40°C)
<80%
7000ft. (2000meters) maximum.
One (1) 9V Battery (NEDA 1604)
After approx. 25 minutes
10.6x4.3x2" (270x110x50mm); 13.6 oz. (386g)
For indoor use and in accordance with the requirements for double insulation
to IEC1010-1 (2001): EN61010-1 (2001) Overvoltage Category III 600V and
Category II 1000V, Pollution Degree 2.
6
Accuracy (% of reading + digits)
o
± (3%rdg + 9 F)
o
± (3%rdg + 5 C)
± 9 °F
±2.0% reading or ± 4°F whichever is >
±5°C
±2.0% reading or ±2°C