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MA640 V2.1 07/08
12
Support line (781) 890-7440
Technical support: Extension 200; E-mail: [email protected]
Repair & Returns: Extension 210; E-mail: [email protected]
Product specifications subject to change without notice
For the latest version of this User’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
General Specifications
Clamp jaw opening
1.5" (40mm) approx.
Display
6000 count backlit LCD
Continuity check
Threshold 60
Ω
; Test current < 0.35mA
Diode test
Test current of 0.9mA typical;
Open circuit voltage
[
2.8VDC typical
Low Battery indication
Battery symbol is displayed
Over-range indication
‘OL’
display
Measurement rate
2 readings per second, nominal
Thermocouple sensor
Type K thermocouple required
Input Impedance
10M
Ω
(VDC and VAC)
AC current bandwidth
50/60Hz
AC voltage bandwidth
50 to 400Hz
AC response
True rms (AAC and VAC)
Crest Factor
3.0 in 60A and 600A ranges, (50/60Hz and 5% to 100% of
range)
Operating Temperature
41
°
F to 104
°
F (5
°
C to 40
°
C)
Storage Temperature
-4
°
F to 140
°
F (-20
°
C to 60
°
C)
Operating Humidity
Max 80% up to 87
°
F (31
°
C) decreasing linearly to 50% at
104
°
F(40
°
C)
Storage Humidity
<80%
Operating Altitude
7000ft. (2000meters) maximum.
Battery
One (1) 9V Battery (NEDA 1604)
Auto power OFF
After approx. 15 minutes, with disable
Dimensions & Weight
9.2x3x1.53” (232x77x39mm); 9.56 oz. (271g)
Safety
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.
Approvals
CE,
Copyright
©
2008 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.