Omega HHM-EX540 User guide

User’s Guide

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MADE IN CHINA

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HHM-EX540

Wireless TRMS Multimeter

OMEGAnet®Online Service Internet e-mail

omega.com [email protected]

Servicing North America:

U.S.A.: Omega Engineering, Inc., One Omega Drive, P.O. Box 4047

ISO 9001 Certified

Stamford, CT 06907-0047
Toll-Free: 1-800-826-6342 Tel: [phone]
FAX: [phone] e-mail: [email protected]

Canada: 976 Bergar

Laval (Quebec), H7L 5A1 Canada
Toll-Free: 1-800-826-6342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

For immediate technical or application assistance:

U.S.A. and Canada: Sales Service: 1-800-826-6342/1-800-TC-OMEGA

Customer Service: 1-800-622-2378/1-800-622-BEST
Engineering Service: 1-800-872-9436/1-800-USA-WHEN

Mexico En Español: 001 [phone] FAX: [phone]
Latin America [email protected] e-mail: [email protected]

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Servicing Europe:

Benelux: Managed by the United Kingdom Office

Czech Republic: Frystatska 184

France: Managed by the United Kingdom Office

Germany/ Austria: Daimlerstrasse 26

United Kingdom: OMEGA Engineering Ltd.

ISO 9001 Certified

Toll-Free: 0800 099 3344 TEL: [phone]
FAX: [phone] e-mail: [email protected]

733 01 Karviná, Czech Republic
Toll-Free: 0800-1-66342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

Toll-Free: 0800 466 342 TEL: [phone]
FAX: [phone] e-mail: [email protected]

D-75392 Deckenpfronn, Germany
Toll-Free: 0800 6397678 TEL: [phone]
FAX: [phone] e-mail: [email protected]

One Omega Drive, River Bend Technology Centre, Northbank
Irlam, Manchester M44 5BD United Kingdom
Toll-Free: 0800-488-488 TEL: [phone]
FAX: [phone] e-mail: [email protected]

It is the policy of OMEGA Engineering, Inc. to comply with all worldwide safety and EMC/EMI
regulations that apply. OMEGA is constantly pursuing certification of its products to the European New
Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA accepts no liability for any
errors it contains, and reserves the right to alter specifications without notice.
WARNING: These products are not designed for use in, and should not be used for, human applications.

Introduction

This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency
(electrical & electronic), Duty Cycle, Diode Test, and Continuity plus Thermocouple
Temperature. It can store and recall data. It features a waterproof, rugged design for heavy
duty use. This meter can transmit data wirelessly when linked to a PC. Proper use and care
of this meter will provide many years of reliable service.

Safety

This symbol adjacent to another symbol, terminal or operating device
indicates that the operator must refer to an explanation in the Operating
Instructions to avoid personal injury or damage to the meter.

WARNING

CAUTION

MAX
1000V

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

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.

This symbol advises the user that the terminal(s) so marked must not be
connected to a circuit point at which the voltage with respect to earth
ground exceeds (in this case) 1000 VAC or VDC.

This symbol adjacent to one or more terminals identifies them as being
associated with ranges that may, in normal use, be subjected to
particularly hazardous voltages. For maximum safety, the meter and its
test leads should not be handled when these terminals are energized.

This symbol indicates that a device is protected throughout by double
insulation or reinforced insulation.

2 EX540-EU-EN V1.4-3/11

SAFETY INSTRUCTIONS

This meter has been designed for safe use, but must be operated with caution. The rules
listed below must be carefully followed for safe operation.

1. NEVER apply voltage or current to the meter that exceeds the specified maximum:

Input Protection Limits

Function Maximum Input

V DC or V AC 1000VDC/AC rms

mA AC/DC 500mA 1000V fast acting fuse

A AC/DC

Frequency, Resistance, Capacitance,
Duty Cycle, Diode Test, Continuity

Temperature 1000VDC/AC rms

Surge Protection: 8kV peak per IEC 61010

2. USE EXTREME CAUTION when working with high voltages.

3. DO NOT measure voltage if the voltage on the "COM" input jack exceeds 1000V above
earth ground.

4. NEVER connect the meter leads across a voltage source while the function switch is in
the current, resistance, or diode mode. Doing so can damage the meter.

5. ALWAYS discharge filter capacitors in power supplies and disconnect the power when
making resistance or diode tests.

10A 1000V fast acting fuse (20A for 30 seconds
max every 15 minutes)

1000VDC/AC rms

6. ALWAYS turn off the power and disconnect the test leads before opening the covers to
replace the fuse or batteries.

7. NEVER operate the meter unless the back cover and the battery and fuse covers are in
place and fastened securely.

8. If the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

3 EX540-EU-EN V1.4-3/11

Controls and Jacks

1. 40,000 count LCD display

2. STORE(<RECALL) button

3. MAX/MIN (_)button

1

2

4. MODE button

5. RANGE(SETUP) button

6. Function switch

7. mA, µA and 10A input jacks

3
4

5

8. COM input jack

9. Positive input jack

10.

Backlight button

6

11. EXIT(AC+DC) button

12. HOLD(PEAKHOLD>) button

7

13. REL(+) button

Note: Tilt stand and battery compartment are on rear of unit.

Symbols and Annunciators

•))) Continuity

Diode test

Battery status
n nano (10
µ micro (10
m milli (10
A Amps
k kilo (10
F Farads (capacitance)

M mega (10

-9

) (capacitance)

-6

) (amps, cap)

-3

) (volts, amps)

3

) (ohms)

6

) (ohms) RF transmitter active
Ω Ohms PEAK Peak Hold
Hz Hertz (frequency) V Volts
% Percent (duty ratio)

Relative
AC Alternating current AUTO Autoranging
DC Direct current HOLD Display hold
ºF Degrees Fahrenheit ºC Degrees Centigrade

MAX Maximum MIN Minimum
N0. Serial number S second
SET Set up parameter AC+DC Alternating current + Direct current
TRMS True RMS STO Store
RCL Recall AUTO Auto Range

Auto Power off enabled Backlight

13

12

11

10

9

8

4 EX540-EU-EN V1.4-3/11

Operating Instructions

WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very
dangerous and should be measured with great care.

1. ALWAYS turn the function switch to the OFF position when the meter is not in use.

2. If “OL” appears in the display during a measurement, the value exceeds the range
you have selected. Change to a higher range.

DC VOLTAGE MEASUREMENTS

CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or

OFF. Large voltage surges may occur that can damage the meter.

1. Set the function switch to the VDC position.

2. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.

3. 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.

4. Read the voltage in the display.

AC VOLTAGE (FREQUENCY, DUTY CYCLE) MEASUREMENTS

WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the

live parts inside some 240V outlets for appliances because the contacts are recessed
deep in the outlets. As a result, the reading may show 0 volts when the outlet actually has
voltage on it. Make sure the probe tips are touching the metal contacts inside the outlet
before assuming that no voltage is present.

CAUTION: Do not measure AC voltages if a motor on the circuit is being switched ON or
OFF. Large voltage surges may occur that can damage the meter.

1. Set the function switch to the VAC/Hz/% position.

2. Insert the black test lead banana plug into the negative COM jack.
Insert red test lead banana plug into the positive V jack.

3. Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the “hot” side of the circuit.

4. Read the voltage in the main display and the frequency in the right
auxiliary display

5. Press the MODE button to indicate “Hz”.

6. Read the frequency in the main display.

7. Press the MODE button again to indicate “%”.

8. Read the % of duty cycle in the main display.

9. With ACV in the main display, press EXIT for 2 seconds to measure AC+DC.

5 EX540-EU-EN V1.4-3/11

mV VOLTAGE MEASUREMENTS

CAUTION: Do not measure mV voltages if a motor on the circuit is being switched ON

or OFF. Large voltage surges may occur that can damage the meter.

1. Set the function switch to the mV position.

2. Press the MODE button to indicate “DC”or ““AC ”, or in AC range press
EXIT for two seconds and chose ”AC+DC”

3. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive V jack.

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 mV voltage in the main display.

6. With AC mV in the main display, press EXIT for 2 seconds to measure
AC+DC.

DC CURRENT MEASUREMENTS

CAUTION: Do not make 20A current measurements for longer than 30 seconds.

Exceeding 30 seconds may cause damage to the meter and/or the test leads.

1. Insert the black test lead banana plug into the negative COM jack.

2. For current measurements up to 4000µA DC, set the function switch to
the µA position and insert the red test lead banana plug into the µA/mA
jack.

3. For current measurements up to 400mA DC, set the function switch to
the mA position and insert the red test lead banana plug into the µA/mA
jack.

4. For current measurements up to 20A DC, set the function switch to the
10A/HZ/% position and insert the red test lead banana plug into the 10A
jack.

5. Press the MODE button to indicate “DC” on the display.

6. Remove power from the circuit under test, then open up the circuit at the
point where you wish to measure current.

7. 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.

8. Apply power to the circuit.

9. Read the current in the display.

6 EX540-EU-EN V1.4-3/11

AC CURRENT (FREQUENCY, DUTY CYCLE) MEASUREMENTS

CAUTION: Do not make 20A current measurements for longer than 30 seconds.

Exceeding 30 seconds may cause damage to the meter and/or the test leads.

1. Insert the black test lead banana plug into the negative COM jack.

2. For current measurements up to 4000µA AC, set the function switch to
the µA position and insert the red test lead banana plug into the µA/mA
jack.

3. For current measurements up to 400mA AC, set the function switch to
the mA position and insert the red test lead banana plug into the µA/mA
jack.

4. For current measurements up to 20A AC, set the function switch to the
10A/HZ/% position and insert the red test lead banana plug into the 10A
jack.

5. Press the MODE button to indicate “AC” on the display.

6. Remove power from the circuit under test, then open up the circuit at the
point where you wish to measure current.

7. Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the “hot” side of the circuit.

8. Apply power to the circuit.

9. Read the current in the display. In the 10AAC range, right auxiliary display frequency.

10. Press and hold the MODE button to indicate “Hz”.

11. Read the frequency in the display.

12. Momentarily press the MODE button again to indicate “%”.

13. Read the % duty cycle in the display.

14. Press and hold the MODE button to return to current measurement.

10. With ACA in the main display, press EXIT for 2 seconds to measure AC+DC.

RESISTANCE MEASUREMENTS

WARNING: To avoid electric shock, disconnect power to the unit under test and

discharge all capacitors before taking any resistance measurements. Remove the
batteries and unplug the line cords.

1. Set the function switch to the Ω CAP position.

2. Insert the black test lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive Ω jack.

3. Press the MODE button to indicate “Ω” on the display.

4. Touch the test probe tips across the circuit or part under test. It is best
to disconnect one side of the part under test so the rest of the circuit will
not interfere with the resistance reading.

5. Read the resistance in the display.

7 EX540-EU-EN V1.4-3/11

CONTINUITY CHECK

WARNING: To avoid electric shock, never measure continuity on circuits or wires that

have voltage on them.

1. Set the function switch to the Ω CAP position.

2. Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive Ω jack.

3. Press the MODE button to indicate“ "and “Ω” on the display

4. Touch the test probe tips to the circuit or wire you wish to check.

5. If the resistance is less than approximately 35Ω, the audible signal will
sound. If the circuit is open, the display will indicate “OL”.

DIODE TEST

1. Set the function switch to the Ω CAP position.

2. Insert the black test lead banana plug into the negative COM jack and
the red test lead banana plug into the positive V jack.

3. Press the MODE button to indicate“ “ and “V” on the display.

4. Touch the test probes to the diode under test. Forward voltage will
typically indicate 0.400 to 0.700V. Reverse voltage will indicate “OL”.
Shorted devices will indicate near 0V and an open device will indicate
“OL” in both polarities.

CAPACITANCE MEASUREMENTS

WARNING: To avoid electric shock, disconnect power to the unit under test and

discharge all capacitors before taking any capacitance measurements. Remove the
batteries and unplug the line cords.

1. Set the rotary function switch to the Ω CAP position.

2. Insert the black test lead banana plug into the negative COM jack.

3. Insert the red test lead banana plug into the positive V jack.

4. Press the MODE button to indicate “F”

5. Touch the test leads to the capacitor to be tested.

6. Read the capacitance value in the display

8 EX540-EU-EN V1.4-3/11

TEMPERATURE MEASUREMENTS

1. Set the function switch to the Temp position.

2. Insert the Temperature Probe into the input jacks, making sure to
observe the correct polarity.

3. Press the MODE button to indicate “ºF” or “ºC”

4. Touch the Temperature Probe head to the part whose temperature
you wish to measure. Keep the probe touching the part under test
until the reading stabilizes (about 30 seconds).

5. Read the temperature in the display.

Note: The temperature probe is fitted with a type K mini connector. A mini connector to

banana connector adaptor is supplied for connection to the input banana jacks.

FREQUENCY (DUTY CYCLE) MEASUREMENTS (ELECTRONIC)

1. Set the rotary function switch to the Hz/% position.

2. Insert the black lead banana plug into the negative COM jack and the red test lead
banana plug into the positive Hz jack.

3. Touch the test probe tips to the circuit under test.

4. Read the frequency on the display.

5. Press the MODE button to indicate “%”.

6. Read the % duty cycle in the display.

% 4 – 20mA MEASUREMENTS

1. Set up and connect as described for DC mA measurements.

2. Set the rotary function switch to the 4-20mA% position.

3. The meter will display loop current as a % with 0mA=-25%, 4mA=0%, 20mA=100%,
and 24mA=125%.

AUTORANGING/MANUAL RANGE SELECTION

When the meter is first turned on, it automatically goes into AutoRanging. This
automatically selects the best range for the measurements being made and is generally
the best mode for most measurements. For measurement situations requiring that a range
be manually selected, perform the following:

1. Press the RANGE key. The “AUTO” display indicator will turn off.

2. Press the RANGE key to step through the available ranges until you select the range
you want.

3. To exit the Manual Ranging mode and return to Autoranging, press EXIT

Note: Manual ranging does not apply for the Temperature functions.

MAX/MIN

1. Press the MAX/MIN key to activate the MAX/MIN recording mode. The display icon
"MAX" will appear. The meterleft auxiliary displaywill display and hold the maximum
reading and will update only when a new “max” occurs.The display icon "MIN" will
appear. The right auxiliary displaymeter will display and hold the minimum reading
and will update only when a new “min” occurs.

2. To exit MAX/MIN mode press EXIT

9 EX540-EU-EN V1.4-3/11

RELATIVE MODE

The relative measurement feature allows you to make measurements relative to a stored
reference value. A reference voltage, current, etc. can be stored and measurements made
in comparison to that value. The displayed value is the difference between the reference
value and the measured value.

1. Perform the measurement as described in the operating instructions.

2. Press the REL button to store the reading in the display and the "▲" indicator will
appear on the display.

3. The Right auxiliary display displays the initial reading (the stored value)

4. The Left auxiliary display displays the actual currently measured value.

5. Main display displays the Relative value (currently measured value minus the stored
value).

DISPLAY BACKLIGHT

Press the
SET time. Press the EXIT button to exit the backlight on mode.

HOLD

The hold function freezes the reading in the display. Press the HOLD key momentarily to
activate or to exit the HOLD function.

PEAK HOLD

The Peak Hold function captures the peak AC or DC voltage or current. The meter can
capture negative or positive peaks as fast as 1 millisecond in duration. Momentarily press
the PEAK button, “PEAK” and “MAX” will display in left auxiliary display. MIN” will
display in right auxiliary display. The meter will update the dispay each time a lower
negative peak occurs. Press the EXIT button to exit the PEAK HOLD mode. Auto Power
Off feature will be disabled automatically in this mode.

DATA STORAGE

1. Set the function switch to the measurement function desired.

2. Press the STORE button to enter the STORE function. The left upper aux display

3. Press the PEAKHOLD button to change into the initial storage number 0000. (Press it

4. Press STORE button again to enter into recording interval time set up function.

5. The left upper aux display indicates 0000 S, which is the recording sample rate; use

6. Set the sample rate to 0000 S for manual recording. In this mode, each press of the

7. Set the sample rate to 1 to 255 S for automatic recording. In this mode, pressing the

8. Press the EXIT button to end the recording session.

key to turn the backlight on. The backlight will automatically turn off after

indicates the current storage location (0000 to 9999). New measurements will begin
storing into the next location.

again to change back). On the right upper aux display shows XXXX which states how
many current storage locations are used.

the + & - buttons to select the sample rate desired (0 to 255 sec)

STORE button will save one measurement reading.

STORE button will start data recording at the set sample rate.

10 EX540-EU-EN V1.4-3/11

DATA STORAGE RECALL

1. Press STORE button for two seconds to enter into RECALL function.

2. On the left upper aux display will show XXXX, which is the current storage location.
The right aux display will show XXXX, which is the number of storage locations
currently used.

3. Press the + or — button to select the storage location. The value in that location will
be indicated in the main display.

4. Press the PEAKHOLD button once to continuously scan data from 0000 to XXXX.
Press again then scan again.

5. Press the EXIT button to end the recall session.

CLEARING MEMORY

To clear the memory of all stored data, from the OFF position, hold the EXIT button and
switch the function switch to any position. Release the EXIT button and the LCD will flash
3 times and a buzzer will beep three times. Memory is now clear.

PC WIRELESS COMMUNICATION:

1. Install and launch the pc software

2. Press and Hold the backlight button for two seconds to enter RF wireless transmit
mode.

3. The RF icon

4. When communication is established, the RF icon on the display will blink and the led
indicator on the receiver will also blink.

5. Once per second, the data will be displayed on the pc screen, plotted and inserted
into a list.

6. Hold the backlight button for two seconds to exit the RF wireless transmit mode

SENDING STORED DATA TO THE PC

1. Launch the pc software

2. Press the STORE button for two seconds to enter into data RECALL function.

3. Press the HOLD button for two seconds. The RF transmit icon will flash while the
stored data is sent to the pc

SETUP

1. Press and Hold the RANGE/SETUP button for two seconds to enter the SET function.
The first of five settable functions will appear.

2. Press the RANGE button to step through the functions

A: Upper limit buzzer alarm OFF or Value
B: Lower limit buzzer alarm OFF or Value
C: Auto power off time OFF, 10 to 30 sec
D: Button beeper ON/OFF

E: Back light time OFF, 10 to 30 sec

Use the +, - ◄, and ◄ buttons to select and change conditions and digits.

3. Press the RANGE/SETUP button until the meter returns to the normal display to exit
this mode.

AC+DC

In the measuring modes VAC, mV(AC), 10A(AC), mA(AC) and uA(AC), press the EXIT
button for 2 seconds to enter into AC+DC testing. The precision is the same as in the AC
measure modes. The LCD shows AC+DC icon. Press the EXIT button to exit the mode.

LOW BATTERY INDICATION

When the

will appear on the display.

icon appears in the display, the battery should be replaced

11 EX540-EU-EN V1.4-3/11

Maintenance

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage
before removing the back cover or the battery or fuse covers.

WARNING: To avoid electric shock, do not operate your meter until the battery and fuse
covers are in place and fastened securely.

This MultiMeter is designed to provide years of dependable service, if the following care
instructions are performed:

1. KEEP THE METER DRY. If it gets wet, wipe it off.

2. USE AND STORE THE METER IN NORMAL TEMPERATURES. Temperature
extremes can shorten the life of the electronic parts and distort or melt plastic parts.

3. HANDLE THE METER GENTLY AND CAREFULLY. Dropping it can damage the
electronic parts or the case.

4. KEEP THE METER CLEAN. Wipe the case occasionally with a damp cloth. DO NOT
use chemicals, cleaning solvents, or detergents.

5. USE ONLY FRESH BATTERIES OF THE RECOMMENDED SIZE AND TYPE. Remove
old or weak batteries so they do not leak and damage the unit.

6. IF THE METER IS TO BE STORED FOR A LONG PERIOD OF TIME, the batteries
should be removed to prevent damage to the unit.

12 EX540-EU-EN V1.4-3/11

BATTERY INSTALLATION

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage

before removing the battery cover.

1. Turn power off and disconnect the test leads from the meter.

2. Open the rear battery cover by removing two screws (B) using a Phillips head
screwdriver.

3. Insert the battery into battery holder, observing the correct polarity.

4. Put the battery cover back in place. Secure with the screws.

5.

You, as the end user, are legally bound (EU Battery ordinance) to return all used
batteries, disposal in the household garbage is prohibited! You can hand over
your used batteries / accumulators at collection points in your community or
wherever batteries / accumulators are sold!

Disposal: Follow the valid legal stipulations in respect of the disposal of the device
at the end of its lifecycle

WARNING: To avoid electric shock, do not operate the meter until the battery cover is in
place and fastened securely.

NOTE: If your meter does not work properly, check the fuses and batteries to make sure that

they are still good and that they are properly inserted.

A

A

B

B

A

F1 F2

13 EX540-EU-EN V1.4-3/11

REPLACING THE FUSES

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage

before removing the meter cover.

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 six “A” screws securing the rear cover.

5. Gently remove the old fuse and install the new fuse into the holder.

6. Always use a fuse of the proper size and value (0.5A/1000V fast blow for the 400mA
range [SIBA 70-172-40], 10A/1000V fast blow for the 20A range [SIBA 50-199-06]).

7. 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.

FCC Part 15

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver

is connected.
—Consult the dealer or an experienced radio/TV technician for help.
Warning : Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.

14 EX540-EU-EN V1.4-3/11

Specifications

Function Range Resolution Accuracy

DC Voltage

AC Voltage
(AC+DC)
50 to 1000Hz

DC Current

AC Current
(AC+DC)
50 to 1000Hz

NOTE: Accuracy is stated at 18oC to 28oC (65oF to 83oF) and less than 75% RH.

400mV 0.01mV

4V 0.0001V

40V 0.001V

400V 0.01V

1000V 0.1V

400mV 0.01mV

4V 0.0001V

40V 0.001V

400V 0.01V

1000V 0.1V

All AC voltage ranges are specified from 5% of range to 100% of range

400μA 0.01μA

4000μA 0.1μA

40mA 0.001mA

400mA 0.01mA

10A 0.001A

(20A: 30 sec max with reduced accuracy)

400μA 0.01μA

4000μA 0.1μA

40mA 0.001mA

400mA 0.01mA
10A 0.001A

(20A: 30 sec max with reduced accuracy)
All AC voltage ranges are specified from 5% of range to 100% of range

±(0.06% reading + 2 digits)

±(0.1% reading + 2 digits)

±(1.0% reading + 4digits)

±(1.0% reading + 3digits)

±(1.0% reading + 3 digits)

±(1.5% reading + 3 digits)

15 EX540-EU-EN V1.4-3/11

Function Range Resolution Accuracy

Resistance

Capacitance

Frequency
(electronic)

Frequency
(electrical)

Duty Cycle

Temp
(type-K)

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.

400Ω 0.01Ω ±(0.3% reading + 9 digits)

4kΩ 0.0001kΩ

40kΩ 0.001kΩ

400kΩ 0.01kΩ

4MΩ 0.001MΩ

40MΩ 0.001MΩ ±(2.0% reading + 10 digits)

40nF 0.001nF

400nF 0.01nF

4μF 0.0001μF

40μF 0.001μF

400μF 0.01μF

4000µF 0.1µF

40mF 0.001mF

40Hz 0.001Hz

400Hz 0.01Hz

4kHz 0.0001kHz

40kHz 0.001kHz

400kHz 0.01kHz

4MHz 0.0001MHz

40MHz 0.001MHz

100MHz 0.01MHz Not specified

Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz; 5Vrms
min @ 20% to 80% duty cycle and > 100kHz.

40.00HZ-4KHz 0.01HZ to

0.001KHz

Sensitivity:5Vrms

0.1 to 99.90% 0.01%

Pulse width: 100µs - 100ms, Frequency: 5Hz to 150kHz

-58 to 1382°F 0.1°F

-50 to 750°C 0.1°C

-25 to 125% 0.01% ±50 digits 4-20mA%

0mA=-25%, 4mA=0%, 20mA=100%, 24mA=125%

±(0.3% reading + 4 digits)

±(3.5% reading + 40 digits)

±(3.5% reading + 10 digits)

±(5% reading + 10 digits)

±(0.1% reading + 1 digits)

±(0.5% reading)

±(1.2% reading + 2 digits)

±(1.0% reading + 4.5°F)

±(1.0% reading + 2.5°C)

(probe accuracy not included)

16 EX540-EU-EN V1.4-3/11

Enclosure Double molded, waterproof (IP67)
Shock (Drop Test) 2 meters (6.5 feet)
Diode Test Test current of 0.9mA maximum, open circuit voltage 2.8V DC

typical

Storage capacity 9999 records
RF transmit distance 10 meters (approx)
Transmitter Frequency 915MHz

Continuity Check Audible signal will sound if the resistance is less than 35Ω

(approx.), test current <0.35mA

Peak Captures peaks >1ms
Temperature Sensor Requires type K thermocouple
Input Impedance >10MΩ VDC & >9MΩ VAC
AC Response True rms
ACV Bandwidth 50Hz to 1000Hz
Crest Factor ≤3 at full scale up to 500V, decreasing linearly to ≤1.5 at 1000V
Display 40,000 count, backlit, liquid crystal with bargraph
Overrange indication “OL” is displayed
Auto Power Off 15 minutes (approximately) with disable feature
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/1000V ceramic fast blow

A range; 10A/1000V ceramic fast blow

Operating Temperature 5ºC to 40ºC (41ºF to 104ºF)
Storage Temperature -20

o

C 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 2000meters (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 This meter is intended for origin of installation use and protected,

against the users, by double insulation per EN61010-1 and
IEC61010-1 2

nd

Edition (2001) to Category IV 600V and Category

III 1000V; Pollution Degree 2.

17 EX540-EU-EN V1.4-3/11

WARRANTY/DISCLAIMER

OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship
for a period of 13 months from date of purchase. OMEGA’s WARRANTY adds an additional one (1)
month grace period to the normal one (1) year product warranty to cover handling and shipping
time. This ensures that OMEGA’s customers receive maximum coverage on each product.

If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer
Service Department will issue an Authorized Return (AR) number immediately upon phone or
written request. Upon examination by OMEGA, if the unit is found to be defective, it will be repaired
or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action
of the purchaser, including but not limited to mishandling, improper interfacing, operation outside
of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit
shows evidence of having been tampered with or shows evidence of having been damaged as a
result of excessive corrosion; or current, heat, moisture or vibration; improper specification;
misapplication; misuse or other operating conditions outside of OMEGA’s control. Components in
which wear is not warranted, include but are not limited to contact points, fuses, and triacs.

OMEGA is pleased to offer suggestions on the use of its various products. However,
OMEGA neither assumes responsibility for any omissions or errors nor assumes liability
fo r any dam a ges tha t resul t from the us e of its pr o duct s in acco r danc e wi th
information provided by OMEGA, either verbal or written. OMEGA warrants only that
the parts manufactured by the company will be as specified and free of defects.
OMEG A M AKE S N O OTHER WAR RANTI ES OR REPRE SENTA TIONS OF AN Y K IND
WHATSOEVER, EXPRESSED OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED
WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The
remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA
wi th res p ect to th is o r der, wh ethe r base d on cont r act, warra n ty, ne g lig e nce,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
com ponent upon which liability is based. I n no e vent shall OMEGA be liab le for
consequential, incidental or special damages.

CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a
“Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or
(2) in medical applications or used on humans. Should any Product(s) be used in or with any
nuclear installation or activity, medical application, used on humans, or misused in any way,
OMEGA assumes no responsibility as set forth in our basic WARRANTY / DISCLAIMER language,
and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability
or damage whatsoever arising out of the use of the Product(s) in such a manner.

Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department.

RETURN REQUESTS/INQUIRIES

BE F O R E RE T U R N I NG ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAI N AN
AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUSTOMER SERVICE DEPARTMENT (IN
ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the
outside of the return package and on any correspondence.

The purchaser is responsible for shipping charges, freight, insurance and proper packaging to
prevent breakage in transit.

FOR WARRANTY
following information available BEFORE
contacting OMEGA:

1. Purchase Order number under which
the product was PURCHASED,

2. Model and serial number of the product
under warranty, and

3. Repair instructions and/or specific
problems relative to the product.

OM EGA ’ s poli cy is to make run ni n g cha n ge s , not mod e l cha nge s, whe nev e r an impr ove m en t i s pos sib l e.
This affords our customers the latest in technology and engineering.

OMEGA is a registered trademark of OMEGA ENGINEERING, INC.
© Copyright 2012 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, repro-

duced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior
written consent of OMEGA ENGINEERING, INC.

RETURNS, please have the

FOR NON-WARRANTY REPAIRS,

consult OMEGA
for current repair charges. Have the following
information available BEFORE contacting OMEGA:

1. Purchase Order number to cover the

COST of the repair,

2. Model and serial number of the

product, and

3. Repair instructions and/or specific problems

relative to the product.

Where Do I Find Everything I Need for

Process Measurement and Control?

OMEGA…Of Course!

Shop online at omega.com

TEMPERATURE

䡺⻬

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䡺⻬

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M5141/0612