Sperry instruments DM-4400A Manual de usuario

04/06 Form # 415

OPERATING INSTRUCTIONS

Model DM-4400A

DIGITAL MULTIMETER

PLEASE READ THESE OPERATING INSTRUCTIONS CAREFULY

Misuse and abuse of these instruments cannot be prevented by any

printed word and may cause injury and or equipment damage. Please

follow all these instructions and measurement procedures faithfully and

adhere to all standard industry safety rules and practices.

The Professional’s Choice®

2150 Joshua’s Path, Suite 302

Hauppauge, New York 11788

1-800-645-5398 | 631-231-7050

Fax: 631-434-3128

DM4400 04_06 5/3/06 1:10 PM Page 2

CONTENTS

SECTION TITLE PAGE

Warranty 1

1 Description 2

2 Features 2

3 Specifications 2-4

4 Safety Rules 5-6

5 Front Panel Controls 7

6 Preparation for Use 7

6.1 Unpacking and Contents Check 7

6-2 Pre-Operation Procedure 7-8

7 Battery Replacement 8-9

8 Fuse Replacement 10

9 Operation 11

9.1 Voltage Measurements 11

9.2 Current Measurements 12-13

9.3 Resistance Measurements 13

9.4 Battery Test Measurements 13

9.5 Diode Tests 14

9.6 Non Contact Voltage (NCV) Tests 14

10 Maintenance 15

10.1 Cleaning 15

10.2 Battery Replacement 15

10.3 Fuse Replacement 15

11 Calibration 16-17

11.1 Calibration procedure 17-18

12 Diagrams 19

12.1 Circuit Diagram 19

12.2 Parts List 20-21

13 Return For Repairs 21

DM4400 04_06 5/3/06 1:10 PM Page 3

ONE YEAR LIMITED WARRANTY

Sperry Instruments, Inc. warrants that this Sperry instrument has been carefully

tested, inspected and warranted for one (1) year from the date of purchase by the

original end user, provided the instrument has not been misused, damaged due to

negligence, neglect or unauthorized repair, abused or used contrary to the

operating instructions. Instruments and proof of purchase in the form of a legible

copy or original of the sales receipt clearly identifying the distributor, model num-

ber and date of purchase must be returned to Sperry Instruments, Inc. Attention:

Customer Service Center, 2150 Joshua’s Path, Suite 302, Hauppauge, New York

11788, postage prepaid for examination and verification of manufacturing defect

under warranty. Sperry Instruments, Inc., shall be the sole judge of such defect.

The liability of Sperry Instruments, Inc., shall be limited to the repair or replacement

at its sole option of any defective product.

THIS WARRANTY AND THE OBLIGATIONS AND LIABILITIES OF SELLER

THEREUNDER ARE EXCLUSIVWE AND IN LIEU OF AND BUYERS HEREBY

WAIVES ALL OTHER REMEDIES, EXPRESS WARRANTIES, GUARANTEES

OR LIABILITIES OF AND FOR INCIDENTAL OR CONSEQUENTAIL DAMAGES

OR WHETHER OR NOT OCCASIONED BY’S SELLER’S NEGLIGENCE. THIS

WARRANTY SHALL NOT BE EXTENDED, ALTERED OR VARIED EXCEPT BY

A WRITTEN INSTRUMENT SIGNED BY SELLER AND BUYER. SOME STATES

ALLOW LIMITATIONS ON HOW LONG AND IMPLIED WARRANTY LASTS, SO

THE ABOVE LIMITATION ON HOW LONG AN IMPLIED WARRANTY LASTS,

SO THE ABOVE LIMITATIONS MAY NOT APPLY TO YOU. THIS WARRANTY

GIVES YOU SPECIFIED LEGAL RIGHTS AND YOU MAY ALSO HAVE OTHER

RIGHTS WHICH VARY STATE TO STATE.

WARRANTY RETURN

Refer to section "Return for Repairs"for complete instructions. All Warranty

returns must include a legible copy or original of the sales receipt clearly identify-

ing the model number, serial number and date of purchase.

DM4400 04_06 5/3/06 1:10 PM Page 4

Sec. 1 DESCRIPTION

This exceptional 3-1/2 digit handheld, digital multimeter has the capacity of

reading up to 6 functions on up to 18 ranges. This DMM offers a powerhouse

of measurement capability in a small self-contained housing. It is designed for

the professional at work, in the field or in the laboratory. Yet simple enough to

operate, making it perfect for the hobbyist too.

Safety was prime consideration in the design of this DMM. Housed in shock

resistant ABS plastic, this instrument stands up to the use and abuse of every-

day service and electrically insulates the user from potential shock hazards.

Electronic overload protection against accidental application of voltage to

resistance and continuity circuits, combined with its rugged construction make

it a durable and reliable instrument.

Sec. 2 FEATURES

• Pocket-size

• Simple Operation

• 1000 hour battery life

• 10A DC/AC Range

• Recessed safety designed input terminals

• Built-in tilt stand

• Overload protection on all ranges

• Diode test function

• Non contact Voltage detection

Sec. 3 SPECIFICATIONS

Display: 3-1/2 digit LCD, 0.5" numerals, maximum reading

1999 with automatic sign and " " annunciators.

Overrange

Indication: "1" most significant digit blinks.

Sampling Rate: 3 times per second.

Operating

Environment: 5°C to 40°C (32°F to 104°F)

Relative humidity: 80% for temperatures up to 31 degrees C

Decreasing linearly to 50% relative humidity

at 40 degrees C.

DM4400 04_06 5/3/06 1:10 PM Page 5

Storage

Environment: -20° C to 60° C (-4 F to 140° F) at 80% relative

humidity.

Power Source: One (1) 9V Transistor Type Battery.

(NEDA #1604).

Power

Consumption: 30mW typical

Battery Life: 1000 hours typical with zinc carbon.

Battery Indicator: " " symbol appears in display to indicate

low battery voltage.

Fuse: AWS Part F-17; 0.5A, 250V, 5 x 20mm fast acting.

Dimensions: 5.0"H x 2.8"W x 1.4"D

(128H x 72W x 36Dmm).

Weight: Approximately 7.0 oz. (200g) including battery.

RANGES:

DC Voltage

Range Resolution Accuracy (18°C to 28°C) Input Impedance

200mV 100µV ±(2.0% of rdg + 4d) 10MΩ

2V 1mV ±(0.5% of rdg + 4d) "

20V 10mV " "

200V 100mV " "

600V 1V " "

Normal Mode Rejection Ratio: Greater than 46dB at 50 Hz 60Hz

(1K unbalance).

Overload Protection: 600VDC or AC rms for 1 minute.

AC Voltage (Average Responding, Calibrated in RMS of Sine Wave)

Range Resolution Accuracy (18°C to 28°C) Input Impedance

(50Hz-500Hz)

2V 1mV ±(1.0% of rdg + 4d) 10MΩ

20V 10mV " "

200V 100mV " "

600V 1V " "

Response: Average responding calibrated in RMS of a sine wave.

Overload Protection: 600VAC for 1 minute.

DM4400 04_06 5/3/06 1:10 PM Page 6

DC Current

Overload Protection: 0.5A/250V fuse on mA inputs

10A for 60 seconds on 10A input (unfused)

Resistance

Overload Protection: 250VDC or peak AC – Electronic (No fuse blow).

Range Resolution Accuracy (18°C to 28°C) Full Scale

Burden Voltage

2mA 1µA ±(1.0% of rdg + 4d) 0.25V

200mA 100µA " "

10A 10mA ±(3.0% of rdg + 1d) 1.2V

AC Current

(50Hz-500Hz)

Overload Protection: 0.5A/250V fuse on mA inputs

10A for 60 seconds on 10A input (unfused)

Range Resolution Accuracy (18°C to 28°C) Full Scale

Burden Voltage

2mA 1µA ±(1.0% of rdg + 4d) 0.25V

200mA 100µA " "

10A 10mA ±(3.0% of rdg + 1d) 1.2V

Range Resolution Accuracy (18°C to 28°C) Open Circuit

Voltage

200 10mΩ ±(1.2% of rdg + 4d) 0.45V

2K 1Ω ±(1.2% of rdg + 1d) "

20K 10Ω " "

200K 100Ω " "

2000K 1KΩ " "

20M 10KΩ ±(3.0% of rdg + 5d) "

Diode Check

Overload Protection: 250VDC or peak AC – Electronic (No fuse blow).

Range Test Current Open Circuit Volts

DCV 2V 0.3mA appox. 1.5Vdc

Continuity

Overload Protection: 250VDC or peak AC - Electronic ( No fuse blow).

Range Resolution Audible Indication Open Circuit Volts

2KΩ 1Ω <1KΩ 0.45V

DM4400 04_06 5/3/06 1:10 PM Page 7

Non Contact Voltage (NCV Test)

Range Frequency Dielectric Strength

100-600VAC 50/60Hz 2000V, 1 minute, 100uA or less during

max to ground dielectric strength test

Sec. 4 SAFETY RULES

1. Read these operating instructions thoroughly and completely before oper-

ating your DMM. Pay particular attention to WARNINGS and CAUTIONS,

which will inform you of potentially dangerous procedures. These instruc-

tions must be followed.

2. Always inspect your DMM, test leads and accessories for any sign of

damage or abnormality before every use. If any abnormal conditions exist

(e.g. broken test leads, cracked cases, display not reading, etc.), do not

attempt to take any measurements. Refer to section 14 Return for Repair.

3. Never ground yourself when taking electrical measurements. Do not

touch exposed metal pipes, outlets, fixtures, etc., which might be at

ground potential. Keep your body isolated from ground by using dry cloth-

ing, rubber shoes, rubber mats or any approved insulating material.

4. Never touch exposed wiring, connections or any live circuit conductors

when attempting to take measurements.

5. Never replace the protective fuse inside the DMM with any other than the

Sperry Part number specified or approved equal.

6. Remember: Think Safety and Act Safely.

7. When testing for the presence of voltage, make sure the voltage function

is operating properly by reading a known voltage in that range before

assuming that a zero reading indicates a no-voltage condition.

8. Calibration and repair should be performed by qualified maintenance per-

sonnel only.

9. Do not attempt calibration or service unless another person, capable of

rendering first aid and resuscitation is present.

10. Do not install substitute parts or perform any unauthorized modification of

the instrument. Return the instrument to Sperry Instruments for service

and repair to insure that safety features are maintained.

11. To avoid electric shock use CAUTION when working with voltages above

40Vdc or 20Vac. Such voltages pose a shock hazard.

12. Do not operate this instrument in an explosive atmosphere (i.e. in the

presence of flammable gases or fumes, vapor or dust).

13. For indoor use only.

14. Altitude up to 2000 meters.

15. This equipment has been evaluated to INSTALLATION CATEGORY II.

Pollution Degree 2, and according to EN61010-1.

DM4400 04_06 5/3/06 1:10 PM Page 8

NCV Sensor End

Fig. 1

Non Contact

Voltage

Function

Digital

Display

Input

Terminals

Range

Selector

Switch

DM4400 04_06 5/3/06 1:10 PM Page 9

Sec. 5 FRONT PANEL CONTROLS

(See Fig. 1)

1. Digital Display: 3-1/2 digit LCD, 0.5" numerals, maximum reading 1999 with

automatic sign and " " annuciators. 3-1/2 digit LCD with Automatic func-

tion and range annunciators including the following: " “ "-".

2. Range Selector Rotary Switch: Rotating this switch will turn the DMM on or

off as well as change the function. For the available functions your DMM

has refer to section 3 (Specifications).

3. Input Terminals: These terminals should be used in conjunction with the

position of the function switch.

Sec. 6 PREPARATION FOR USE

Sec. 6.1 UNPACKING AND CONTENTS CHECK

The DM-4400A comes complete and ready to use. Check the

following contents list when unpacking. If any pieces are missing

notify the distributor you purchased the instrument from or

Sperry Instrument, Inc.

• Operating Instructions # 415

• Test Leads TL-54 (one black, one red).

• 9V Transistor type Battery See Battery

replacement section 10.2 for proper installation.

• One Fuse installed, one spare Fuse Part # F-17; 0.5A,

250V, 5mm X 20 mm, fast acting (See Fuse Replacement

section 10.3)

Sec. 6.2 PRE-OPERATION PROCEDURE

1. Install the 9V transistor type battery See Battery

Replacement procedure in section 10.2.

2. Inspect the instrument for any external defects by comparing

with the diagram on page 6. If any abnormal conditions exist, do

not attempt to take any measurements. Refer to sections 10

(maintenance) and 14 (Return for Repairs).

DM4400 04_06 5/3/06 1:10 PM Page 10

3. Insert the test leads into the "COM" and "V-Ω" jacks.

Connect the two ends of the test leads together.

4. Place the range selector switch into the off position.

Nothing will appear on the display. Replace the range selector

switch into the following ranges shown in the chart below.

Check for the appropriate meter response.

Range Display Readings

DC NO

AC NO

Ω 10.00 “1” flashing

DIODE 1.500 Approx.

5. As you can see, the decimal point moves as the ranges are

changed. The maximum display reading is 1999. The 200DCV

range will actually only read 199.9Vdc. We call this the 200DCV

range for convenience only.

6. You can now check the decimal point on each range by

referring to sec. 3 Specifications where the ranges are all listed.

Refer to the Range and Resolution columns to compute the

decimal point location.

7. If any abnormal conditions exist, do not attempt to take any

electrical measurements. Instead refer to sec. 14 Return for

Repairs.

Sec. 7 BATTERY REPLACEMENT

The DM-4400A has a self-contained power supply consisting of One 9V

Transistor Type Battery (NEDA #1604).

DM4400 04_06 5/3/06 1:10 PM Page 11

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