EXTECH EX840 Расширенная инструкция онлайн [12/12] 529221
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EXTECH EX840 Расширенная инструкция онлайн [12/12] 529221

EXTECH EX840 Расширенная инструкция онлайн [12/12] 529221
EX840-EU-EN-V5.3-3/12
12
Function Range and Resolution Accuracy (% of reading + digits)
-4 to 1400
o
F ± (3%rdg + 9
o
F)
Temperature
(type-K)
-20 to 760
o
C ± (3%rdg + 5
o
C)
-58 to -4°F ± 9 °F
-4 to 518°F
±2.0% reading or ± 4°F
whichever is >
-50 to -20°C ±5°C
Temp
(IR)
-20 to 270°C
±2.0% reading or ±2°C
whichever is >
Clamp jaw opening 43mm (1.7") approx.
Display 3-3/4 digits (4000 counts) backlit LCD
Continuity check Threshold 40Ω; Test current < 0.5mA
Diode test Test current of 0.3mA typical;
Open circuit voltage < 3VDC typical
Low Battery indication Battery symbol is displayed
Over-range indication ‘OL’ display
Measurement rate 2 readings per second, nominal
PEAK Captures peaks >1ms
Thermocouple sensor Type K thermocouple required
IR Spectral response 6 to 16µm
IR Emissivity 0.95 fixed
IR distance ratio 8:1
Input Impedance 10MΩ (VDC and VAC)
AC bandwidth 50 to 400Hz (AAC and VAC)
AC response True rms (AAC and VAC)
Crest Factor 3.0 in 40A and 400A ranges, 1.4 in 1000A range (50/60Hz and 5% to
100% of range)
Operating Temperature 5°C to 40°C (41°F to 104°F)
Storage Temperature -20°C to 60°C (-4°F to 140°F)
Operating Humidity Max 80% up to 31°C (87°F) decreasing linearly to 50% at 40°C
(104°F)
Storage Humidity <80%
Operating Altitude 2000meters (7000ft) maximum.
Battery One (1) 9V Battery (NEDA 1604)
Auto power OFF After approx. 25 minutes
Dimensions & Weight 270x110x50mm (10.6x4.3x2”); 386g (13.6 oz)
Safety 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.
Patent notice U.S. Patent 7163336
Copyright © 2012 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.
www.extech.com

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