AEMC 502 User manual

n TRMS
CLAMP-ON METER
n
MEDIDORES DE TENAZA TRMS
502
ESPAÑOL Manual de
Instrucciones
ENGLISH User Manual

TRMS Clamp-on Meter Model 502 1
Table of Contents
1. INTRODUCTION ............................... 3
1.1 International Electrical Symbols.......... 4
1.2 Receiving Your Shipment.................... 4
1.3 Ordering Information ........................... 4
2. PRODUCT FEATURES....................... 5
2.1 Control Features ................................. 5
2.2 LCD Display ........................................ 6
3. SPECIFICATIONS ............................. 7
3.1 Electrical Specications ...................... 7
3.2 Mechanical Specications................... 8
3.3 Environmental Specications.............. 9
3.4 Safety Specications .......................... 9
4. OPERATION.................................... 10
4.1 AC Current Measurement ................. 10
4.2 AC Volt Measurement ........................11
4.3 DC Volt Measurement....................... 12
4.4 Resistance Measurement ................. 13
4.5 Continuity Measurement ................... 14
4.6 Frequency Measurement Using
Current Input ..................................... 15
4.7 Frequency Measuring Using
Voltage Input ..................................... 16
ENGLISH ................................................................ 1
ESPAÑOL.............................................................. 21

2 TRMS Clamp-on Meter Model 502
5. MAINTENANCE............................... 17
5.1 Warning............................................. 17
5.2 Cleaning............................................ 17
5.3 Battery Replacement ........................ 18
Repair and Calibration....................................... 19
Technical and Sales Assistance ........................ 19
Limited Warranty ............................................... 20
Warranty Repairs............................................... 20

TRMS Clamp-on Meter Model 502 3
CHAPTER 1
INTRODUCTION
Warning
● Read the user manual before operating and
follow all safety information.
● Only use the meter as specied in this user
manual.
● Never use this meter on a circuit with volt-
ages greater than 600Vrms @ 50/60Hz.
● Never measure current while the test leads
are connected to the input jacks.
● Do not operate the meter if the body or test
leads look damaged.
● Only use factory supplied leads.
● Check the rotary range switch and make
sure it is at the correct position before each
measurement.
● Do not perform resistance and continuity
test on a live circuit.
● Use extreme caution when measuring live
systems with voltages greater than 60VDC or
30VAC.
● Use extreme care when working around bus
bars and bare conductors.
● Do not use the meter in over range/overload
conditions (OL).
● For accurate readings, change the battery
when the symbol appears.

4 TRMS Clamp-on Meter Model 502
1.1 International Electrical Symbols
This symbol signies that the instrument is pro-
tected by double or reinforced insulation.
This symbol on the instrument indicates a
WARNING and that the operator must refer to the
user manual for instructions before operating the
instrument. In this manual, the symbol preceding
instructions indicates that if the instructions are
not followed, bodily injury, installation/sample and
product damage may result.
Risk of electric shock. The voltage at the parts
marked with this symbol may be dangerous.
1.2 Receiving Your Shipment
Upon receiving your shipment, make sure that the con-
tents are consistent with the packing list. Notify your dis-
tributor of any missing items. If the equipment appears to
be damaged, le a claim immediately with the carrier and
notify your distributor at once, giving a detailed descrip-
tion of any damage. Save the damaged packing container
to substantiate your claim.
1.3 Ordering Information
TRMS Clamp-on Meter Model 502..........Cat. #2117.66
Includes meter, pair of test leads (red/black with probe tips), two
1.5V AAA batteries, soft carrying case and a user manual.

TRMS Clamp-on Meter Model 502 5
CHAPTER 2
PRODUCT FEATURES
2.1 Control Features
1. Jaw assembly - Ø 1.18" (30mm)
2. Safety barrier - anti-slip guard
3. Lever for jaw opening/closing
4. Rotary range selector switch
5. LCD display
6. COM (Black) input terminal jack
7. Positive (Red) input terminal jack
8. Data hold button
9. Battery compartment cover

6 TRMS Clamp-on Meter Model 502
2.2 LCD Display
Low Battery
AUTO Auto Range
Data Hold
Continuity with beeper
VVoltage Indicator
ACurrent Indicator
AC Input
DC Input
Polarity Indicator
Analog Bargraph
MK Hz Frequency Measurement

TRMS Clamp-on Meter Model 502 7
CHAPTER 3
SPECIFICATIONS
Accuracy is provided under the following reference conditions: 23°C ±5°C, 45
to 80% RH, True RMS for ACV and ACA accuracy are specied from 5% to
100% of range, crest factor 1.4 <CF <3 at full scale & CF <6 at half scale.
3.1 Electrical Specications
AC Amperes (Auto-ranging)
Range Resolution Accuracy
40A 0.01A 50 to 60Hz: 1.9% of Rdg ± 5cts
60 to 500Hz: 2.5% of Rdg ± 5cts
400A 0.1A
Overload Protection: 600Arms
AC Volts (Auto-ranging)
Range Resolution Accuracy Input Impedance
400V 0.1V 50 to 500Hz:
1.5% of Rdg ± 5cts 1MΩ
600V 1V
Overload Protection: 600Vrms
DC Volts (Auto-ranging)
Range Resolution Accuracy Input Impedance
400V 0.1V 1% Rdg
± 2 cts 1MΩ
600V 1V
Overload Protection: 600Vrms
Resistance (Ω)
Range Resolution Accuracy Max Test Voltage
400Ω 0.1Ω 1% Rdg ± 2cts 1.5VDC
Overload Protection: 600Vrms

8 TRMS Clamp-on Meter Model 502
Continuity ( )
Range Beeper Activation Max Test Voltage
< 40Ω 1.5VDC
Overload Protection: 600Vrms
Frequency (Hz) (Auto-ranging)
Input Range Resolution Accuracy Sensitivity
Current 20 to 4kHz 1 Hz 0.1% Rdg
± 1ct 2Arms
10kHz 10 Hz
Voltage
10 to 4kHz 1 Hz
0.1% Rdg
± 1ct 5Vrms40kHz 10 Hz
400kHz 100 Hz
Overload Protection: 600Vrms or 600Arms
3.2 Mechanical Specications
Digital Display:
3 digits LCD display, 4000-count (3999 max)
Analog Display:
Fast 42 segment analog bargraph display
Symbol and Scale Range:
Automatic according to range and input signal
Polarity:
displayed when negative signal applied to input
Over Load:
displayed when input signal exceeds range
Sample Rate: 2 samples/sec for the digital display
20 samples/sec for the analog bargraph
Power Supply: Two 1.5V AAA (LR03) alkaline batteries
Low Battery: displayed when the battery is below
the required voltage

TRMS Clamp-on Meter Model 502 9
Battery Life: 100 hours approx
Auto Power Off: The meter will shut itself OFF if there
is no activity for 30 minutes.
Jaw opening size: 1.18" (30mm)
Dimension:
1.97 x 7.60 x 1.1" (50 x 193 x 28mm)
Weight: 8.11 oz (230g) with batteries
3.3 Environmental Specications
Operating Temperature:
32° to 104°F (0° to 40°C), <80% RH, non-condensing
Storage Temperature:
14° to 140°F (-10° to 60°C), <70% RH, battery removed
Altitude: 2000m
3.4 Safety Specications
EN 61010, 600V, CAT II
EN 61010, 300V, CAT III
Pollution Degree: 2

10 TRMS Clamp-on Meter Model 502
CHAPTER 4
OPERATION
4.1 AC Current Measurement
NOTE: Remove test leads before measuring current
• Turn the rotary range switch to the range.
• Press the lever to open the jaws.
• Clamp the jaws around the conductor to be
measured.
• If reading is unstable and is hard to read,
push the HOLD button and read the mea-
surement.
WARNING: Unclamp the meter
immediately if " " is displayed,
V
V
A
0
AUTO
OFFHz
A
2 0 0 0
COM
Ω
CATII
600V
!
®
INSTRUMENTS
MODEL 502
TRMS CLAMP METER
HOLD
600V CAT II
300V CAT III 400A
H

TRMS Clamp-on Meter Model 502 11
4.2 AC Volt Measurement
WARNING: Maximum Input Voltage is 600V. Do
not exceed this voltage to avoid electrical shock
and/or damage to the instrument.
• Turn the rotary range switch to the range.
• Insert the red test lead to the red "+" input jack and
the black lead to the black "COM" input jack.
• Bring the test probe tips into contact with the test
points.
• If reading is unstable and is hard to read, push the
HOLD button and read the measurement.
WARNING: Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.
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12 TRMS Clamp-on Meter Model 502
4.3 DC Volt Measurement
• Turn the rotary range switch to the range.
• Insert the red test lead to the red "+" input jack and
the black lead to the black "COM" input jack.
• Bring the test probe tips into contact with the test
points.
• If reading is unstable and is hard to read, push the
HOLD button and read the measurement.
WARNING: Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.

TRMS Clamp-on Meter Model 502 13
4.4 Resistance Measurement
• Turn the rotary range switch to the range.
• Insert the red test lead to the red "+" input jack and
the black lead to the black "COM" input jack.
• Bring the test probe tips into contact with the sample
under test.
WARNING: Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.
WARNING: When making a resistance mea-
surement, make sure that the power is off
(dead circuit), and that all capacitors in the
measured circuit are fully discharged.

14 TRMS Clamp-on Meter Model 502
4.5 Continuity Measurement
• Turn the rotary range switch to the range.
• Insert red test lead to the red "+" input jack and the
black lead to the black "COM" input jack.
• Bring the test probe tips into contact with the sample
under test.
• If the resistance is less than 40Ω, the beeper emits a
continuous sound.
WARNING: Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.
WARNING: When making a resistance mea-
surement, make sure that the power is off
(dead circuit), and that all capacitors in the
measured circuit are fully discharged.
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TRMS Clamp-on Meter Model 502 15
4.6 Frequency Measurement Using
Current Input
NOTE: Remove the test leads before measuring current
• Turn the rotary range switch to the range.
• Press the lever to open the jaws.
• Clamp the jaws around the conductor to be mea-
sured.
WARNING: Do not use both voltage and cur-
rent inputs at the same time when measuring
frequency. This may be dangerous. Errone-
ous readings will occur if both inputs are used
at the same time.

16 TRMS Clamp-on Meter Model 502
4.7 Frequency Measuring Using
Voltage Input
• Turn the rotary range switch to the range.
• Insert red test lead to the red "+" input jack and the
black lead to the black "COM" input jack.
• Bring the test probe tips into contact with the sample
under test.
WARNING: Immediately unclamp the meter
from the conductor under test if overload " "
is displayed.

TRMS Clamp-on Meter Model 502 17
CHAPTER 5
MAINTENANCE
5.1 Warning!
• Remove the test leads on any input before opening the
case.
• Do not operate the clamp-on probe without a battery
case cover.
• To avoid electrical shock, do not attempt to perform
any servicing unless you are qualied to do so.
• To avoid electrical shock and/or damage to the instru-
ment, do not get water or other foreign agents into the
probe.
5.2 Cleaning
• To clean the probe, wipe the case with a damp cloth
and mild detergent.
• Do not use abrasives or solvents.
• Do not get water inside the case. This may lead to
electrical shock or damage to the instrument.

18 TRMS Clamp-on Meter Model 502
5.3 Battery Replacement
The symbol will appear on the LCD display when the
voltage drops below proper operating range. This indi-
cates that the batteries need to be changed.
It is recommended to replace both batteries at the same
time.
• The meter must be in the OFF position and discon-
nected from any circuit or input.
• Place the meter face down and loosen the battery
cover screw with a at head screwdriver.
• Replace the batteries with two fresh 1.5V AAA (LR03)
batteries.
• Replace the battery compartment cover and tighten
down the screw.

TRMS Clamp-on Meter Model 502 19
Repair and Calibration
To ensure that your instrument meets factory specications,
we recommend that it be submitted to our factory Service
Center at one-year intervals for recalibration, or as required
by other standards or internal procedures.
For instrument repair and calibration:
You must contact our Service Center for a Customer Service
Authorization Number (CSA#). This will ensure that when
your instrument arrives, it will be tracked and processed
promptly. Please write the CSA# on the outside of the ship-
ping container. If the instrument is returned for calibration, we
need to know if you want a standard calibration, or a calibra-
tion traceable to N.I.S.T. (Includes calibration certicate plus
recorded calibration data).
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
15 Faraday Drive • Dover, NH 03820 USA
Phone: [phone] or [phone] (Ext. 360)
Fax: [phone] or [phone]
[email protected]
(Or contact your authorized distributor)
Costs for repair, standard calibration, and calibration trace-
able to N.I.S.T. are available.
NOTE: A CSA# must be obtained before returning any
instrument.
Technical and Sales Assistance
If you are experiencing any technical problems, or require
any assistance with the proper operation or application of
your instrument, please call, mail, fax or e-mail our technical
support hotline:
Chauvin Arnoux®, Inc. d.b.a. AEMC® Instruments
200 Foxborough Blvd • Foxborough, MA 02035, USA
Phone: [phone] or [phone]
Fax: [phone]
[email protected]
www.aemc.com
NOTE: Do not ship Instruments to our Foxborough, MA
address.