FLIR Extech Instruments EX840 Manual page 14

Function
Temperature
(type-K)
Temp
(IR)
Clamp jaw opening
Display
Continuity check
Diode test
Low Battery indication
Over-range indication
Measurement rate
Bluetooth range
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
Patent notice
Copyright © 2012 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
Range and Resolution
o
-4 to 1400
o
-20 to 760 C
-58 to -4°F
-4 to 518°F
-50 to -20°C
-20 to 270°C
43mm (1.7") 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
10 meters (32 feet) approximately
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)
5°C to 40°C (41°F to 104°F)
-20°C to 60°C (-4°F to 140°F)
Max 80% up to 31°C (87°F) decreasing linearly to 50% at 40°C
(104°F)
<80%
2000meters (7000ft) maximum.
One (1) 9V Battery (NEDA 1604)
After approx. 10 minutes
270x110x50mm (10.6x4.3x2"); 386g (13.6 oz)
For indoor use and in accordance with the requirements for double
insulation to IEC1010-1 (2001): EN61010-1 (2001) Overvoltage
Category IV 600V and Category III 1000V, Pollution Degree 2.
U.S. Patent 7163336
www.extech.com
Accuracy (% of reading + digits)
F
14
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
whichever is >
EX845-EU-EN -V2.4-2/12