Extech Instruments 470 User Manual page 14

Function Range
Frequency 5.000Hz
50.00Hz
500.0Hz
5.000kHz
50.00kHz
500.0kHz
5.000MHz
10.00MHz
Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz; 5Vrms min @ 20% to 80% duty
cycle and > 100kHz
Duty Cycle 0.1 to 99.9%
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 Test current of 0.3mA maximum, open circuit voltage 1.5V DC
Continuity Check Audible signal will sound if the resistance is less than 150Ω
Temperature Sensor Requires type K thermocouple
IR Spectral response 6 to 16µm
IR Emissivity 0.95 fixed
IR distance ratio 8:1
Input Impedance >7.5MΩ (VDC & VAC)
AC Response True rms
ACV Bandwidth 50Hz to 1kHz
Crest Factor <3:1 at full scale & <6:1 at half scale
Display 4000 count backlit liquid crystal
Overrange indication "OL" is displayed
Auto Power Off 15 minutes (approximately)
Polarity Automatic (no indication for positive); Minus (-) sign for negative
Measurement Rate 2 times per second, nominal
Low Battery Indication "
Battery One 9 volt (NEDA 1604) battery
Fuses mA, µA ranges; 0.5A/250V fast blow
A range; 20A/250V ceramic fast blow
Operating Temperature 5ºC to 40ºC (41ºF to 104ºF)
Storage Temperature -20
Operating Humidity Max 80% up to 31ºC (87ºF) decreasing linearly to 50% at 40ºC
(104ºF)
Storage Humidity <80%
Operating Altitude 2000 meters.(7000ft) maximum.
Weight 342g (0.753lb) (includes holster).
Size 187 x 81 x 50mm (7.36" x 3.2" x 2.0") (includes holster)
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.
Patent Notice U.S. Patent 7056012
Resolution
±(1.5% reading + 5 digits)
0.001Hz
0.01Hz
0.1Hz
0.001kHz
±(1.2% reading + 2 digits)
0.01kHz
0.1kHz
0.001MHz
±(1.5% reading + 4 digits)
0.01MHz
.
0.1% ±(1.2% reading + 2 digits)
Pulse width: 100µs - 100ms, Frequency: 5Hz to 150kHz
typical
(approx.), test current <0.7mA
" is displayed if battery voltage drops below operating voltage
o o o o
C to 60 C (-4 F to 140 F)
14
Accuracy
EX470-EU_ENG V2.1 8/07