Extech Instruments EX540 User Manual page 17

Enclosure Double molded, waterproof (IP67)
Shock (Drop Test) 6.5 feet (2 meters)
Diode Test Test current of 0.9mA maximum, open circuit voltage 2.8V DC
typical
Storage capacity 9999 records
RF transmit distance 10 meters (approx)
Transmitter Frequency 915MHz
Continuity Check Audible signal will sound if the resistance is less than 35Ω
(approx.), test current <0.35mA
Peak Captures peaks >1ms
Temperature Sensor Requires type K thermocouple
Input Impedance >10MΩ VDC & >9MΩ VAC
AC Response True rms
ACV Bandwidth 50Hz to 1000Hz
Crest Factor ≤3 at full scale up to 500V, decreasing linearly to ≤1.5 at 1000V
Display 40,000 count, backlit, liquid crystal with bargraph
Overrange indication "OL" is displayed
Auto Power Off 15 minutes (approximately) with disable feature
Polarity Automatic (no indication for positive); Minus (-) sign for negative
Measurement Rate 2 times per second, nominal
Low Battery Indication "
voltage
Battery One 9 volt (NEDA 1604) battery
Fuses mA, µA ranges; 0.5A/1000V ceramic fast blow
A range; 10A/1000V ceramic fast blow
Operating Temperature 41ºF to 104ºF (5ºC to 40ºC)
o
Storage Temperature -4
Operating Humidity Max 80% up to 87ºF (31ºC) decreasing linearly to 50% at 104ºF
(40ºC)
Storage Humidity <80%
Operating Altitude 7000ft. (2000meters) maximum.
Weight 0.753lb (342g) (includes holster).
Size 7.36" x 3.2" x 2.0" (187 x 81 x 50mm) (includes holster)
Safety This meter is intended for origin of installation use and protected,
against the users, by double insulation per EN61010-1 and
IEC61010-1 2
III 1000V; Pollution Degree 2. The meter also meets UL 61010-1,
nd
2
and UL 61010B-2-031, 1
" is displayed if battery voltage drops below operating
o o o
F to 140 F (-20 C to 60 C)
nd
Edition (2001) to Category IV 600V and Category
Edition (2004), CAN/CSA C22.2 No. 61010-1 2
st
Edition (2003)
17
nd
Edition (2004),
EX540-EN V1.2 7/10