Extech Instruments EX470A User Manual page 14

Function
Frequency
Duty Cycle
Note: Accuracy specifications consist of two elements:
 (% reading) – This is the accuracy of the measurement circuit.
 (+ digits) – This is the accuracy of the analog to digital converter.
Diode Test
Continuity Check
Temperature Sensor
IR Spectral response
IR Emissivity
IR distance ratio
Input Impedance
AC Response
ACV Bandwidth
Crest Factor
Display
Overrange indication
Auto Power Off
Polarity
Measurement Rate
Low Battery Indication
Battery
Fuses
Operating Temperature 41ºF to 104ºF (5ºC to 40ºC)
Storage Temperature
Operating Humidity
Storage Humidity
Operating Altitude
Weight
Size
Safety
Patent Notice
Range Resolution
5.000Hz 0.001Hz
50.00Hz 0.01Hz
500.0Hz 0.1Hz
5.000kHz 0.001kHz
50.00kHz 0.01kHz
500.0kHz 0.1kHz
5.000MHz 0.001MHz
10.00MHz 0.01MHz
Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz; 5Vrms min @ 20% to 80% duty cycle and >
.
100kHz
0.1 to 99.9%
Pulse width: 100µs - 100ms, Frequency: 5Hz to 150kHz
Test current of 0.3mA maximum, open circuit voltage 1.5V DC typical
Audible signal will sound if the resistance is less than 150 (approx.), test
current <0.7mA
Requires type K thermocouple
6 to 16µm
0.95 fixed
8:1
>7.5MΩ (VDC & VAC)
True rms
50Hz to 1kHz
<3:1 at full scale & <6:1 at half scale
4000 count backlit liquid crystal
"OL" is displayed
15 minutes (approximately)
Automatic (no indication for positive); Minus (-) sign for negative
2 times per second, nominal
" " is displayed if battery voltage drops below operating voltage
One 9 volt (NEDA 1604) battery
mA, µA ranges; 0.5A/600V fast blow
A range; 10A/600V ceramic fast blow
-4 o F to 140 o F (-20
Max 80% up to 87ºF (31ºC) decreasing linearly to 50% at 104ºF (40ºC)
<80%
7000ft (2000 meters) maximum.
0.753lb (342g) (includes holster).
7.36" x 3.2" x 2.0" (187 x 81 x 50mm) (includes holster)
For indoor use and in accordance with the requirements for double
insulation to IEC1010-1 (EN61010-1) 3
Category III 600V, Pollution Degree 2.
U.S. Patent 7056012
(1.5% reading + 5 digits)
(1.2% reading + 2 digits)
(1.5% reading + 4 digits)
0.1% (1.2% reading + 2 digits)
o C to 60 o C)
14
Accuracy
RD
edition (2010) Overvoltage
EX470A-en-US_v6.0 6/16