Extech Instruments EX470A User manual
CH®
USER MANUAL
True RMS Multimeter plus IR Thermometer
Extech EX470A
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
Introduction
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CAUTION
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
Operating Instructions
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
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Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
EX470A-en-GB_v6.0 6/16
13
Specifications
Function Range Resolution Accuracy
DC Voltage 400mV 0.1mV (0.3% reading + 2 digits)
4V 0.001V
(0.5% reading + 2 digits)
40V 0.01V
400V 0.1V
600V 1V (0.8% reading + 3 digits)
AC Voltage 50 to 400Hz 400Hz to 1kHz
400mV 0.1mV (1.5% reading + 15
digits)
(2.5% reading + 15digits)
4V 0.001V (1.5% reading + 6
digits) (2.5% reading + 8 digits)
40V 0.01V
400V 0.1V
600V 1V (1.8% reading + 6
digits)
(3% reading + 8 digits)
DC Current 400A 0.1A
(1.5% reading + 3 digits)
4000A 1A
40mA 0.01mA
400mA 0.1mA
4A 0.001A (2.5% reading + 5 digits)
10A 0.01A
AC Current 50 to 400Hz 400Hz to 1KHz
400A 0.1A
(1.8% reading + 8
digits) (3.0% reading + 7 digits)
4000A 1A
40mA 0.01mA
400mA 0.1mA
4A 0.001A (3.0% reading + 8
digits)
(3.5% reading + 10
digits)
10A 0.01A
Resistance 4000.1(0.8% reading + 4 digits)
4k0.001k(0.8% reading + 2 digits)
40k0.01k
(1.0% reading + 2 digits)
400k0.1k
4M0.001M
40M0.01M(3.0% reading + 5 digits)
Capacitance 40nF 0.01nF (5.0% reading + 7 digits)
400nF 0.1nF (3.0% reading + 5 digits)
4F 0.001F (3.5% reading + 5 digits)
40F 0.01F
100F 0.1F (5.0% reading + 5 digits)
Temp
(type-K)
-20 to 750 C 1 C (3.0% reading + 3 digits)
(probe accuracy not included)
-4 to 1382 F 1 F
Temp
(IR)
-50 to 270 C 1 C 2.0% reading or 2C, 4 F
-58 to 518 F 1 F
NOTE: Accuracy is stated at 18oC to 28oC (65oF to 83oF) and less than 75% RH.
EX470A-en-GB_v6.0 6/16
14
Function Range Resolution Accuracy
Frequency 5.000Hz 0.001Hz (1.5% reading + 5 digits)
50.00Hz 0.01Hz
500.0Hz 0.1Hz
(1.2% reading + 2 digits)
5.000kHz 0.001kHz
50.00kHz 0.01kHz
500.0kHz 0.1kHz
5.000MHz 0.001MHz (1.5% reading + 4 digits)
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.
Duty Cycle 0.1 to 99.9% 0.1% (1.2% reading + 2 digits)
Pulse width: 100µs - 100ms, Frequency: 5Hz to 150kHz
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 TestTest current of 0.3mA maximum, open circuit voltage 1.5V DC typical
Continuity Check Audible signal will sound if the resistance is less than 150(approx.), test
current <0.7mA
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 “ ” is displayed if battery voltage drops below operating voltage
Battery One 9 volt (NEDA 1604) battery
Fuses mA, µA ranges; 0.5A/600V fast blow
A range; 10A/600V ceramic fast blow
Operating Temperature 5ºC to 40ºC (41ºF to 104ºF)
Storage Temperature -20oC to 60oC (-4oF to 140oF)
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: EN61010-1 (2010) 3rd edition Overvoltage Category III 600V;
Pollution Degree 2.
Patent Notice U.S. Patent 7056012
EX470A-en-GB_v6.0 6/16
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REPLACING THE FUSES
WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads
from the input terminals, and turn OFF the meter before opening the case. Do not operate the meter
with an open case.
1. Disconnect the test leads from the meter.
2. Remove the protective rubber holster.
3. Remove the battery cover (two “B” screws) and the
battery.
4. Remove the four “A” screws securing the rear cover.
5. Lift the center circuit board straight up from the
connectors to gain access to the fuse holders.
6. Gently remove the old fuse and install the new fuse
into the holder.
7. Always use a fuse of the proper size and value
(0.5A/600V fast blow for the 400mA range,
10A/600V fast blow for the 10A range).
8. Align the center board with the connectors and
gently press into place.
9. Replace and secure the rear cover, battery and battery cover.
WARNING: To avoid electric shock, do not operate your meter until the fuse cover is in place and
fastened securely.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
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