OMEGA

HHM22

Digital Multimeter

omega.com

TM

OMEGAnet SM On-Line Service http://www.omega.com

Internet e-mail [email protected]

USA: ISO 9001 Certified

One Omega Drive, Box 4047

Stamford, CT 06907-0047

Tel: (203) 359-1660

FAX: (203)359-7700 e-mail: [email protected]

Servicing North America:

Canada:

976 Bergar

Laval (Quebec) H7L5A1

Tel: (514) 856-6928

FAX: (514) 856-6886 e-mail: [email protected]

For immediate technical or application assistance:

USA and Canada:

Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA SM

Customer Service: 1-800-622-2378 / 1-800-622-BEST SM

Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN SM

Mexico and Latin America:

Tel: (95) 800-TC-OMEGA

FAX: (95) 203-359-7807

SM

En Español: (203) 359-7803

TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA e-mail: [email protected]

Servicing Europe:

Benelux:

Postbus 8034, 1180 LA Amstelveen,

The Netherlands

Tel: (31) 20 6418405 FAX: (31) 20 6434643

Toll Free in Benelux: 06 0993344 e-mail: [email protected]

Germany/Austria:

Daimlerstrasse 26, D-75392

Deckenpfronn, Germany

Tel: 49 (07056) 3017 FAX: 49 (07056) 8540

Toll Free in Germany: 0800 82 66342 e-mail: [email protected]

Czech Republic: ul. Rude armady 1868, 733 01 Karvina-

Hranice, Czech Repubic

Tel: 420 (69) 6311627 FAX: 420 (69) 6311114 e-mail: [email protected]

France:

9, rue Denis Papin, 78190 Trappes

Tel: (33) 130-621-400 FAX: (33)130-699-120

Toll Free in France: 0800-4-06342 e-mail: [email protected]

United Kingdom: ISO 9002 Certified

One Omega Drive

Riverbend Technology Centre Northbank, Irlam,

Manchester, M44 5EX, England

Tel: 44 (161) 777-6611 FAX: 44 (161) 777-6622

Toll Free in England: 0800-488-488 e-mail: [email protected]

It is the policy of OMEGA 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 Engineering, Inc. 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, patient connected application.

SAFETY INFORMATION

The following safety information must be observed to insure maximum personal safety during the operation at this meter:

1. Do not use the meter if the meter or test leads look damaged, or if you suspect that the meter is not operating properly.

2. This meter is not recommended for high voltage industrial use; for example, not for measurements of 440 VAC or 600 VAC industrial power mains. The unit is intended for use with low energy circuits to 600VDC or AC or high energy circuit to 250 VAC or DC. Accidental misuse by connection across a high voltage, high energy power source when the meter is set up for mA measurement may be very hazardous.

3. Turn off power to the circuit under test before cutting, unsoldering, or breaking the circuit. Small amounts of current can be dangerous.

4. Use caution when working above 60V dc or 30V ac rms. Such voltages pose a shock hazard.

5. When Using the probes, keep your fingers behind the finger guards on the probes.

6. Measuring voltage which exceeds the limits of the multimeter may damage the meter and expose the operator to a shock hazard. Always recognize the meter voltage limits as stated on the front of the meter.

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

1

SPECIFICATIONS

Display: 3½ digit liquid crystal display (LCD) with a maximum reading of 3200.

Analog bar graph: 32 segments with measurements 12 times per second.

Polarity: Automatic, (-) negative polarity indication.

Overrange: "OL" mark indication.

Low battery indication: The " " is displayed when the battery voltage drops below the operating level.

Measurement rate: 2 times per second, nominal.

Operating Environment: 0°C to 40°C at <70% relative humidity.

Storage Temperature: -20°C to 60°C at <80% relative humidity.

Accuracy: Stated accuracy at 23°C ± 5°C, <75% relative humidity.

Safety: According to EN61010-1 protection class II overvoltage category

(CAT II 600V) pollution degree 2.

Power: single standard 9-volt battery.

Battery life: 200 hours typical.

Dimensions: 192mm (H) x 91mm (W) x 52.5mm (D).

Weight: 365g including battery.

Accessories: One pair test leads, One spare fuse installed, 9V battery and

Operating Instructions.

2

DC VOLTS

Ranges: 320mV,3.2V,32V,320V,600V

Resolution: 100µV

Accuracy: ±(0.25%rdg + 1dgt)

Input impedance: >10M W

Overload protection: 600VDC or AC rms

AC VOLTS (50Hz - 400Hz)

Ranges: 3.2V,32V,320V,600V

(3.2V only @50Hz-60Hz)

Resolution: 1mV

Accuracy: ±(1.0%rdg + 4dgts) on 3.2V to 320V ranges

±(2.0%rdg + 4dgts) on 600V range

Input impedance: >10M W

Overload protection: 600VDC or AC rms

DC CURRENT

Ranges: 320µA,3.2mA,32mA,320mA,10A

Accuracy: ±(0.5%rdg + 1dgt) on µA,mA ranges

±(3.0%rdg + 1dgt) on 10A range

Input protection: 0.5A / 250V fast blow ceramic fuse

10A / 600V fast blow ceramic fuse

3

AC CURRENT (50Hz - 400Hz)

Ranges:320µA, 32mA, 10A

Accuracy: ±(1.5%rdg + 4dgts) on µA,mA ranges

±(3.5%rdg + 4dgts) on 10A range

Input protection: 0.5A / 250V fast blow ceramic fuse

10A / 600V fast blow ceramic fuse

RESISTANCE

Ranges: 320 W ,3.2K

W ,32K W ,320K W ,3.2M

W ,32M W

Accuracy: ±(0.3%rdg + 3dgts) on 320 W range

±(0.3%rdg + 1dgt) on 3.2K

W to 320K W ranges

±(1.2%rdg + 1dgt) on 3.2M

W range

±(3.0%rdg + 4dgts) on 32M W range

Open circuit volts: 1.26Vdc

Overload protection: 500VDC or AC rms

Effect Reading: 100-3200

CONTINUITY

Audible indication: less than 20 W ±5 W

Open circuit volts: 1.26Vdc

Overload protection: 500VDC or AC rms

Effect Reading: 100-3200

DIODE TEST

Test current: 1.0mA ± 0.6mA

Accuracy: ±(3.0%rdg + 3dgts)

Open circuit volts: 3.0Vdc typical

Overload protection: 500VDC or AC rms

4

CAPACITANCE

Ranges: 3.2nF,32nF,320nF,3.2µF,32µF

Accuracy: ±(3.0%rdg + 10dgts)

Test volts: 50mV/50Hz

TRANSISTOR hFE

Ranges: 0 - 1000

Base current: 10µAdc approx. (Vce=3.0Vdc)

5

OPERATION

Before taking any measurements, read the Safety Information Section.

Always examine the instrument for damage, contamination (excessive dirt, grease, etc.) and defects. Examine the test leads for cracked or frayed insulation. If any abnormal conditions exist do not attempt to make any measurements.

Autoranging

The meter defaults to autorange when you turn it on. In autorange, the meter selects the range automatically.

Manually Selecting a Range, ( )

Press [RANGE] button to hold the selected range. Subsequently pressing the

[RANGE ] button will select each range in sequence from the lowest to highest range. Hold the button for 2 seconds to return to the Autorange Mode.

Press this switch to toggle between the continuity/diode modes. If the function switch is set to " " position.

Auto Power OFF

The meter will auto maticlly turn OFF in 10 minutes.

6

Voltage Measurements

1. Connect the red test lead to the "V W " jack and the black test lead to the

"COM" jack.

2. Set the Function switch to the desired voltage type (DCV) or (ACV) position.

3. Touch the probes to the test points, the range will change automatically to the level that will display the input voltage with best resolution.

4. The value indicated in the display window is the measured value of voltage with proper decimal point and annunciator indication.

5. For dc, a (-) sign is displayed for negative polarity; positive polarity is implied.

Current Measurements

1. Connect the red test lead to the "µAmA" jack and the black test lead to the

"COM" jack.

2. Set the Function switch to the desired voltage type (DCA) or (ACA) position.

3. For current measurements less than 320mA, connect the red test lead to the

"µAmA" jack and the black test lead to the COM jack.

4. For current measurements of 320mA or greater, connect the red test lead to the "10A" jack and the black test lead to the COM jack.

5. Remove power from the circuit under test and open the normal circuit path where the measurement is to be taken. Connect the meter in series with the circuit.

6. Apply power and read the value from the display.

7. Use caution when measuring 10 amps on 10A range for 60s, please waiting for 10 minutes for next measurement of 10 amps for safety reason.

7

Resistance Measurements

1. Set the Function switch to the " W " position.

2. Turn off power to the circuit under test. External voltage across the components causes invalid readings.

3. Connect the red test lead to the "V W " jack and the black test lead to the

"COM" jack.

4. Connect the test lead to the point of measurements and read the value from the display.

Diodes Testing

1. Set the Function switch to " " position.

2. Turn off power to the circuit under test. External voltage across the components causes invalid readings.

3. To toggle between the continity/diode modes, press Range Switch.

4. Touch probes to the diode. A forward-voltage drop is about 0.6V (typical for a silicon diode).

5. Reverse probes. If the diode is good, "OL" is displayed. If the diode is shorted, a value near 0mV will be displayed.

6. If the diode is open, "OL" is displayed in both directions.

7. If the junction is measured in a circuit and a low reading is obtained with both lead connections, the junction may be shunted by a resistance of less than

1k W . In this case the diode must be disconnected from the circuit for accurate testing.

8

Continuity Measurements

1. Set the Function switch to " " position.

2. Turn off power to the circuit under test. External voltage across the components causes invalid readings.

3. To toggle between the continity/diode modes, press Range Switch.

4. Connect the test leads to the two points at which continuity is to be tested.

The buzzer will sound if the resistance is less than approximately 20 W ±5 W .

Capacitance Measurements

1. Set the Function/Range switch to the desired capacitance range.

2. Never apply an external voltage to the sockets. Damage to the meter may result.

3. Insert the capacitor leads directly into the socket.

4. Read the capacitance directly from the display.

Transistor Gain Measurements

1. Set the Function/Range switch to the desired hFE range (PNP or NPN type transistor).

2. Never apply an external voltage to the hFE sockets. Damage to the meter may result.

3. Plug the transistor directly into the hFE socket. The sockets are labeled E,

B and C for emitter, base, and collector.

4. Read the transistor hFE (dc gain) directly from the display.

9

MAINTENANCE

WARNING

Remove test leads before changing battery or fuse or performing any servicing.

Battery Replacement

Power is supplied by a 9 volt "transistor" battery. (NEDA 1604, IEC 6F22). The

" " appears on the LCD display when replacement is needed. To replace the battery, remove the two screws from the back of the meter and lift off the battery case. Remove the battery from battery contacts.

Fuse Replacement

If no current measurements are possible, check for a blown overload protection fuse. There are two fuses; F1 for the "mA" jack and F2 for the "10A" jack.

For access to fuses, remove the four screws from the back of the meter and lift off the battery cover and case. Replace F1 only with the original type 0.5A/

250V, fast acting ceramic fuse. Replace F2 only with the original type 10A/

600V, fast acting ceramic fuse.

Cleaning

Periodically wipe the case with a damp cloth and detergent, do not use abrasives or solvents.

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 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 should malfunction, 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 being 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 which wear are not warranted, including but 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 it 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. P.O. 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. P.O. number to cover the COST of the repair.

2. Model and serial number of 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 1999 OMEGA ENGINEERING,

INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable from, in whole or in part, without prior written consent of OMEGA ENGINEERING, INC.

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Instruments

M-2853/0799