Extech Instruments Extech 470 User Manual page 7

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
Test current of 0.3mA maximum, open
circuit voltage 1.5V DC typical
Audible signal will sound if the
resistance is less than 150Ω
(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/250V fast blow
A range; 20A/250V ceramic fast blow
o o
-4 F to 140 F (-20
Max 80% up to 87ºF (31ºC) decreasing
linearly to 50% at 104ºF(40ºC)
<80%
7000ft. (2000meters) 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 (1995): EN61010-1 (1995)
Overvoltage Category III 600V and
Category II 1000V, Pollution Degree 2.
7
o o
C to 60 C)
V5.0 5/04