FLIR Extech Instruments MA410 User manual

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Introduction
Congratulations on your purchase of this Extech MA410 Clamp Meter. This meter measures
AC Current, AC/DC Voltage, Resistance, Capacitance, Frequency, Diode Test, Duty Cycle
and Continuity. Special features include Thermocouple Temperature and Non-Contact
Voltage detection. The double molded case is designed for heavy duty use. This meter is
shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user
must refer to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present
Double insulation
This WARNING symbol indicates a potentially hazardous situation, which
if not avoided, could result in death or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which
if not avoided, may result damage to the product.
PER IEC1010 OVERVOLTAGE INSTALLATION CATEGORY
OVERVOLTAGE CATEGORY I
Equipment of OVERVOLTAGE CATEGORY I is equipment for connection to circuits in
which measures are taken to limit the transient overvoltages to an appropriate low level.
Note – Examples include protected electronic circuits.
OVERVOLTAGE CATEGORY II
Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be
supplied from the fixed installation.
Note – Examples include household, office, and laboratory appliances.
OVERVOLTAGE CATEGORY III
Equipment of OVERVOLTAGE CATEGORY III is equipment in fixed installations.
Note – Examples include switches in the fixed installation and some equipment for industrial
use with permanent connection to the fixed installation.
OVERVOLTAGE CATEGORY IV
Equipment of OVERVOLTAGE CATEGORY IV is for use at the origin of the installation.
Note – Examples include electricity meters and primary over-current protection equipment
WARNING
CAUTION

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SAFETY NOTES
•Do not exceed the maximum allowable input range of any function.
•Do not apply voltage to meter when resistance function is selected.
•Set the function switch OFF when the meter is not in use.
•Remove the battery if meter is to be stored for longer than 60 days.
WARNINGS
•Set function switch to the appropriate position before measuring.
•When measuring volts do not switch to current/resistance modes.
•Do not measure current on a circuit whose voltage exceeds 600V.
•When changing ranges always disconnect the test leads from the circuit under test.
CAUTIONS
•Improper use of this meter can cause damage, shock, injury or death. Read and
understand this user manual before operating the meter.
•Always remove the test leads before replacing the battery or fuses.
•Inspect the condition of the test leads and the meter itself for any damage before
operating the meter. Repair or replace any damage before use.
•Use great care when making measurements if the voltages are greater than 25VAC
rms or 35VDC. These voltages are considered a shock hazard.
•Always discharge capacitors and remove power from the device under test before
performing Diode, Resistance or Continuity tests.
•Voltage checks on electrical outlets can be difficult and misleading because of the
uncertainty of connection to the recessed electrical contacts. Other means should be
used to ensure that the terminals are not "live".
•If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
Function Maximum Input
A AC, 400A
V DC, V AC 600V DC/AC
Resistance, Capacitance, Frequency, Diode
Test, Continuity, Temperature 250V DC/AC

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Description
Meter Description
1. Current clamp
2. NCV LED indicator
3. Clamp opening trigger
4. MODE button
5. HZ/% button
6. LCD Display
7. Negative input jack
8. Non-Contact Voltage Detector
9. HOLD button
10. Function switch
11. Relative Button
12. Battery compartment (rear)
13. Positive input jack
Display icons Description
HOLD Data Hold
AUTO Autoranging
DC Direct Current
AC Alternating Current
Low battery
REL Relative
V Volts (Voltage)
ΩOhms (Resistance)
A Amperes (Current)
F Farad (Capacitance)
Hz Hertz (Frequency)
% Duty Ratio
oF and oC Fahrenheit and Celsius units (Temperature)
n, m, μ, M, k Unit of measure prefixes: nano, milli, micro, mega, and kilo
•))) Continuity test
Diode test

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AC/DC Voltage, Frequency, Duty Cycle Measurements
CAUTION: Do not measure voltages if a motor on the circuit is being switched ON or
OFF. Large voltage surges may occur that can damage the meter.
1. Rotate the function switch to the V position.
2. Press the MODE button to select AC or DC Voltage.
3. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive Vjack.
4. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
5. Read the voltage value in the display.
6. Press the Hz % button to display Frequency
7. Press the Hz % button to display Duty Cycle
Resistance, Diode, Continuity Measurements
Note: Remove power from the device under test before making resistance measurements
1. Set the function switch to the Ω position.
2. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive Vjack.
3. Touch the black test probe tip to one side of the device.
Touch the red test probe tip to the other side of the device.
4. Read the resistance value in the display.
5. Press the MODE button to select the DIODE mode. The Diode
symbol will appear in the display.
6. Press the MODE button to select the Continuity mode. The
continuity symbol will appear in the display. If the resistance is <150
ohms the tone will sound.

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Data Hold
To freeze the LCD reading, press the HOLD button. The HOLD icon appears on the LCD.
Press the HOLD button again to return to normal operation.
Relative
Press the REL button (REL will appear in the display) to zero the reading and create a
reference point. All future reading will be the difference between the actual reading and the
stored “REL” reading. In the REL mode, autoranging is disabled and measurements are
limited to the range active when the REL button was pressed. Press the REL button to exit
the mode.
Note: Relative does not function in Frequency or Duty Cycle mode.
Automatic Power Off
In order to conserve battery life, the meter will automatically turn off after approximately 30
minutes. To turn the meter on again, change the position of the function switch.
Low battery indication
When the icon appears in the display, the battery should be replaced. Refer to the
battery replacement procedure in the maintenance section.

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Maintenance
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.
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild detergent; do not use abrasives or
solvents. If the meter is not to be used for 60 days or more, remove the battery and store it
separately.
Battery Replacement
1. Remove the 2 Phillips head screws that secures the rear battery cover
2. Open the battery compartment
3. Replace the 2 AAA batteries.
4. Secure the battery compartment door
Calibration and Repair Services
Extech offers repair and calibration services for the products we sell. Extech also
provides NIST certification for most products. Call the Customer Care Department for
information on calibration services available for this product. Extech recommends that
annual calibrations be performed to verify meter performance and accuracy.
Warranty
EXTECH INSTRUMENTS CORPORATION (A FLIR COMPANY) warrants this instrument to be
free of defects in parts and workmanship for one year from date of shipment (a six month limited
warranty applies to sensors and cables). If it should become necessary to return the instrument for
service during or beyond the warranty period, contact the Customer Service Department at (781)
890-7440 ext. 210 for authorization or visit our website www.extech.com for contact information. A
Return Authorization (RA) number must be issued before any product is returned to Extech. The
sender is responsible for shipping charges, freight, insurance and proper packaging to prevent
damage in transit. This warranty does not apply to defects resulting from action of the user such as
misuse, improper wiring, operation outside of specification, improper maintenance or repair, or
unauthorized modification. Extech specifically disclaims any implied warranties or merchantability
or fitness for a specific purpose and will not be liable for any direct, indirect, incidental or
consequential damages. Extech's total liability is limited to repair or replacement of the product.
The warranty set forth above is inclusive and no other warranty, whether written or oral, is
expressed or implied.

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Specifications
Function Range Resolution Accuracy
(% of reading + digits)
40.00 AAC 0.01A ±(2.5% + 8 digits)AC Current
50/60Hz 400.0 AAC 0.1A ±(2.8% + 8 digits)
4.000 VAC 0.001V
40.00 VAC 0.01V
400.0 VAC 0.1V
±(1.8% + 8 digits)
AC Voltage
50 to 400Hz
600 VAC 1V ±(2.5% + 8 digits)
400.0 mVDC 0.1mV ±(0.8% + 2 digits)
4.000 VDC 0.001V
40.00 VDC 0.01V
400.0 VDC 0.1V
±(1.5% + 2 digits)
DC Voltage
600 VDC 1V ±(2.0% + 2 digits)
400.0Ω0.1Ω±(1.0% + 4 digits)
4.000kΩ0.001kΩ
40.00kΩ0.01kΩ
400.0kΩ0.1kΩ
±(1.5% + 2 digits)
4.000MΩ0.001MΩ±(2.5% + 3 digits)
Resistance
40.00MΩ0.01MΩ±(3.5% + 5 digits)
40.00nF 0.01nF ±(4.0% + 20 digits)
400.0nF 0.1nF
40.00µF 0.01µF
Capacitance
100.0µF 0.1µF
±(3.0% + 5 digits)
10 to 10kHz 0.01Hz ±(1.5% + 2 digits)Frequency
Sensitivity: 15V rms
0.5% to 99.0% 0.1% ±(1.2% + 2 digits)Duty Cycle
Pulse width: 100μs to 100ms, Frequency: 10Hz to 10kHz
-4.0 to 1400°F
-20 to 760°C 0.1° <400° 1° >400° ±(3% + 9°F/5°C)
Temperature
Type K
Specification does not include probe accuracy. Range of supplied probe
is -4 to 482°F (-20 to 250°C).

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
Support line [phone]
Technical support: Extension 200; E-mail: [email protected]m
Repair & Returns: Extension 210; E-mail: [email protected]
Product specifications subject to change without notice
For the latest version of this User’s Guide, Software updates, and other
up-to-the-minute product information, visit our website: www.extech.com
General Specifications
Clamp jaw opening 1.18" (30mm) approx.
Display 4,000 count LCD
Continuity check Threshold <150Ω; Test current < 0.5mA
Diode test Test current of 0.3mA typical;
Open circuit voltage [1.5VDC typical
Low Battery indication Battery symbol is displayed
Over-range indication ‘OL’ display
Measurement rate 2 readings per second, nominal
Thermocouple sensor Type K thermocouple required
Input Impedance 10MΩ(VDC and VAC)
AC bandwidth 50 to 400Hz (VAC)
AC response Average responding
Operating Temperature 41°F to 104°F (5°C to 40°C)
Storage Temperature -4°F to 140°F (-20°C to 60°C)
Operating Humidity Max 80% up to 87°F (31°C) decreasing linearly to 50% at
104°F(40°C)
Storage Humidity <80%
Operating Altitude 7000ft. (2000meters) maximum.
Battery Two “AAA” 1.5V batteries
Auto power OFF After approx. 30 minutes
Dimensions & Weight 7.9x2.6x1.5” (200x66x37mm); 7.23oz. (205g)
Safety For indoor use and in accordance with the requirements for
double insulation to IEC1010-1 (2001): EN61010-1 (2001)
Overvoltage Category III 600V, Pollution Degree 2.
Approvals CE,
Copyright ©2008 Extech Instruments Corporation (a FLIR company)
All rights reserved including the right of reproduction in whole or in part in any form.

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Air Concern Ltd, Building 173 Curie Avenue Harvell Didcot, Oxfordshire