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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
for  any  damages  that  result  from  the  use  of  its  products  in  accordance  with
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.
OMEGA  MAKES  NO  OTHER  WARRANTIES  OR  REPRESENTATIONS  OF  ANY  KIND
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
with  respect  to  this  order,  whether  based  on  contract,  warranty,  negligence,
indemnification, strict liability or otherwise, shall not exceed the purchase price of the
component  upon  which  liability  is  based.  In  no  event  shall  OMEGA  be  liable  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.

RETURN REQUESTS/INQUIRIES

Direct  all  warranty  and  repair  requests/inquiries  to  the  OMEGA  Customer  Service  Department.
BEFORE  RETURNING  ANY  PRODUCT(S)  TO  OMEGA,  PURCHASER  MUST  OBTAIN  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

RETURNS, please have the

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.

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.

OMEGA’s  policy  is  to  make  running  changes,  not  model  changes,  whenever  an  improvement  is  possible. 
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.

Summary of Contents for HHM-MA640

Page 1: ...HHM MA640 600Amp AC DC True RMS Clamp Meter e mail info omega com For latest product manuals omegamanual info Shop online at omega com User sGuide MADE IN CHINA ...

Page 2: ... Managed by the United Kingdom Office Toll Free 0800 466 342 TEL 33 0 161 37 29 00 FAX 33 0 130 57 54 27 e mail sales omega fr Germany Austria Daimlerstrasse 26 D 75392 Deckenpfronn Germany Toll Free 0800 6397678 TEL 49 0 7056 9398 0 FAX 49 0 7056 9398 29 e mail info omega de United Kingdom OMEGA Engineering Ltd ISO 9001 Certified One Omega Drive River Bend Technology Centre Northbank Irlam Manche...

Page 3: ...njury 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 electro...

Page 4: ...e 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 performi...

Page 5: ...ATIVE Button 13 Battery compartment rear 14 Positive Input jack Display icons Description HOLD Data Hold AUTO Autoranging DC Direct Current AC Alternating Current MAX Max reading MIN Min reading Low battery REL Relative V Volts Voltage Ω Ohms Resistance A Amperes Current F Farad Capacitance Hz Hertz Frequency Duty Ratio o F and o C Fahrenheit and Celsius units Temperature n m μ M k Unit of measure...

Page 6: ...p along a length of the cord to assure placing the tip in close proximity to the live conductor NOTE The detector is designed with high sensitivity Static electricity or other sources of energy may randomly trip the sensor This is normal operation AC DC Current Measurements WARNING Disconnect the test leads before making clamp measurements 1 Rotate the Function switch to the 600A AC or DC position...

Page 7: ...ide of the circuit 5 Read the voltage value in the display Resistance Measurements Note Remove power from the device under test before making resistance measurements 1 Rotate 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 V jack 3 Touch the black test probe tip to one side of the devic...

Page 8: ... OL the device is open If both readings are very small or 0 the device is shorted Capacitance Measurements WARNING To avoid electric shock discharge the capacitor before measuring 1 Rotate the function switch to the CAP capacitance position 2 Press the MODE button to select nF capacitance test 3 Insert the black test lead banana plug into the negative COM jack Insert the red test lead banana plug ...

Page 9: ... tip to one side of the device Touch the red test probe tip to the other side of the device 6 Read the Frequency value on the display 7 Press the HZ button to select 8 Read the Duty Ratio on the display Type K Temperature Measurements 1 Rotate the function switch to the Temp position 2 Press the MODE button to select F or C 3 Insert the Temperature Probe into the input jacks 4 Place the temperatur...

Page 10: ...n The AUTO display icon will turn off 2 Press the RANGE key to step through the available ranges Observe the decimal point and units displayed until the preferred range is located 3 To exit the Manual Ranging mode and return to Autoranging press and hold the RANGE key for 2 seconds LCD Backlight The LCD is equipped with backlighting for easier viewing especially in dimly lit areas Press and hold t...

Page 11: ... 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 operatio...

Page 12: ...igits 600 0Ω 0 1Ω 1 0 4 digits 6 000kΩ 0 001kΩ 60 00kΩ 0 01kΩ 600 0kΩ 0 1kΩ 1 5 2 digits 6 000MΩ 0 001MΩ 2 5 3 digits Resistance 60 00MΩ 0 01MΩ 3 5 5 digits 40 00nF 0 01nF 4 0 20 digits 400 0nF 0 1nF 4 000µF 0 001µF 40 00µF 0 01µF 3 0 5 digits 400 0µF 0 1µF 4 0 10 digits Capacitance 4000µF 1µF 5 0 10 digits 10Hz to 10kHz 0 01Hz to 0 01khz 1 5 2 digits Frequency Sensitivity 15Vrms 0 5 to 99 0 0 1 1...

Page 13: ...le required Input Impedance 10MΩ VDC and VAC AC current bandwidth 50 60Hz AC voltage bandwidth 50 to 400Hz AC response True rms AAC and VAC Crest Factor 3 0 in 60A and 600A ranges 50 60Hz and 5 to 100 of range 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 Humidi...

Page 14: ...therwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable 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 ...

Page 15: ...ine Paddlewheel Systems 䡺 Totalizers Batch Controllers pH CONDUCTIVITY 䡺 pH Electrodes Testers Accessories 䡺 Benchtop Laboratory Meters 䡺 Controllers Calibrators Simulators Pumps 䡺 Industrial pH Conductivity Equipment DATA ACQUISITION 䡺 Data Acquisition Engineering Software 䡺 Communications Based Acquisition Systems 䡺 Plug in Cards for Apple IBM Compatibles 䡺 Data Logging Systems 䡺 Recorders Print...

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