General Specifications - Extech Instruments EX320 User Manual

General Specifications

Diode Test
Continuity Check
Input Impedance
AC Bandwidth
Display
Over-range indication
Auto Power Off
Polarity
Measurement Rate
Low Battery Indication
Battery
Fuses
Operating Temperature
Storage Temperature
Operating Humidity
Storage Humidity
Operating Altitude
Weight
Size
Safety
Approvals
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in
which measures are taken to limit the transient overvoltages to an appropriate low level.
Note – Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be
supplied from the fixed installation.
Note – Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note – Examples include switches in the fixed installation and some equipment for
industrial use with permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note – Examples include electricity meters and primary over-current protection equipment
Test current of 0.3mA maximum, open circuit voltage 1.5V DC
typical
Audible signal will sound if the resistance is less than 100Ω
10MΩ (VDC & VAC)
50 / 60Hz
2000 count (0 to 1999) backlit LCD
"OL" is displayed
After 15 minutes (approximately) of inactivity
Automatic (no indication for positive); Minus (-) sign for
negative
2 times per second, nominal
" is displayed if battery voltage drops below operating
"
voltage
Two (2) 1.5V 'AAA' batteries
mA, µA ranges; 200mA/250V fast blow
A range; 10A/250V fast blow
32ºF to 122ºF (0ºC to 50ºC)
o o o
-4 F to 140 F (-20 C to 60
Max 70% up to 87ºF (31ºC) decreasing linearly to 50% at
122ºF (50ºC)
<80% RH
7000ft. (2000meters) maximum.
9.17 oz (260g) (includes holster).
5.8" x 2.9" x 1.6" (147 x 76 x 42mm) (includes holster)
This meter is intended for indoor use and protected, against
the users, by double insulation per EN61010-1 and IEC61010-
1 2nd Edition (2001) to CAT II 1000V & CAT III 600V; Pollution
Degree 2. The meter also meets UL 61010-1, Second Edition
(2004), CAN/CSA C22.2 No. 61010-1, Second Edition (2004),
and UL 61010B-2-031, First Edition (2003)
CE, UL
12
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Model EX320 - Version 4.0 –05/2006