General DMM51FSG Manual de usuario

DMM51FSG

USER’S MANUAL

INTRODUCTION:

Thank you for purchasing G n ral’s DMM51FSG Digital S rvic Multim t r. It is

a 3-1/2" wid , highly r liabl hand-h ld digital m asuring instrum nt. Th m t r

us s advanc d int grat d circuitry with a doubl int grat d A/D conv rt r as its

cor and off rs full rang ov rload prot ction. Th DMM51FSG can m asur th

following: DC curr nt, AC curr nt, DC Voltag , AC Voltag , R sistanc , Diod s and

Continuity, which mak s it an id al tool for HVAC us rs.

Pl as r ad and follow th manual car fully.

Digital Service

Multimeter

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 1

SAFETY RULES:

• The DMM51FSG complies with IEC 1010-1 CAT I 1000V, CAT II 600V and CAT III

300V overvoltage standards. Use the meter only as specified in this manual,

otherwise the protection provided by the meter may be impaired.

• CAT I - For signal level, telecommunication, electronic with small transient over

voltage.

• CAT II - For local level, appliances, main wall outlets, portable equipment.

• The meter is designed to withstand the stated maximum voltages. For Safety

reasons,do not exceed the maximum stated voltage ranges.

• Do not operate the meter before the casing has been closed and screwed safely as

the terminals can carry voltage.

• Make sure the meter is set to the correct range before taking each measurement.

• Before using the meter, please inspect the case and test leads for damaged

insulation or exposed metal.

• Connect the red and black test lead to the correct measuring input jack properly.

• Do not input values over the maximum range of each measurement scale to avoid

damages of the meter.

• Do not turn the rotary function switch during Voltage and Current measurement,

otherwise the meter could be damaged.

• Make sure to use new fuses with proper rating. Do not use incorrect fuses.

• To avoid electric shock or damages, do not apply more than 1000V between the

COM terminals and earth ground .

• Use caution when working with Voltages above 60V (DC) or 30Vrms (AC). These

Voltages pose shock hazard.

• Replace the battery as soon as the battery indicator icon “ ” appears. With a

low battery, the meter might produce false readings that can lead to electric shock

and personal injury.

• Turn off the meter once finished measuring. Take out the battery, when the meter

will not be used for long period.

• Do not operate the meter under adverse environmental conditions such as

excessive humidity.

• To avoid damage and dangerous operation, do not alter or change the circuit.

• To clean, periodically wipe the case with a damp cloth and mild detergent. Do not

use abrasives or solvents.

• International Electrical Symbols:

Low Battery Earth Ground

Safety Rules Double Insulated

AC Diode

Dangerous Voltages Buzzer

DC Fuse

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 2

FEATURES:

33 RA GES, 8 FU CTIO S:

• Liquid Crystal Display, digit height is 27mm

• Overload display

• Maximum display 1999 (3-1/2 digit)

• Full range overload protection

• Temperature:

Operating: 32° to 104°F (0° to 40°C)

Storing: 14° to 122°F (-10° to 50°C)

• Altitude:

Operating: 2000m

Storing: 10000m.

• Relative umidity:

Max. relative humidity 80% for temperature up to 88ºF (31°C) decreasing

linearly to 50% relative humidity at 104ºF (40°C)

• Low Battery display “ ”

• Strap for easy carry

• Tilt stand with three angles

• Dimension: 7.5 x 3.5 x 1.3" (190 x 88 x 34mm)

• Weight:

Meter only (excluding test leads), 9.5oz (270g) approximately

Meter, holster and tilt stand,19.4oz (550g) approximately

SPECIFICATIONS:

Accuracy is specified for one year after calibration, at operating temperatures 23°C,

+/- 5°C, with relative humidity at < 75%.

Accuracy specifications take the form of: +/- (a% readings +digits)

B-1 DIRECT CURRE T VOLTAGE (DC VOLTAGE)

Range Resolution Accuracy

DMM51FSG

200mV 100V

2V 1mV

20V 10mV

200V 100mV

1000V 1V ± (0.8% rdg + 2 digits)

I PUT IMPEDA CE: All ranges are 10MΩ.

OVERLOAD PROTECTIO : 200mV is 250VDC or AC RMS. All other ranges is

750Vrms or 1000Vp-p.

± (0.5% rdg + 1 digits)

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 3

B-2 ALTER ATI G CURRE T VOLTAGE (AC VOLTAGE)

Range Resolution Accuracy

DMM51FSG

200mV 100V ± (1.2% rdg + 3 digits)

2V 1mV

20V 10mV ± (0.8% rdg + 3 digits)

200V 100mV

750V 1V ± (1.2% rdg + 3 digits)

I PUT IMPEDA CE: All ranges are 10MΩ.

FREQUE CY: 40 z-400 z.

OVERLOAD PROTECTIO : 200mV is 250VDC or AC RMS.

All other ranges is 750Vrms or 1000Vp-p.

DISPLAY: Average Value (RMS of Sine Wave).

B-3 DIRECT CURRE T CURRE T (DC CURRE T)

Range Resolution Accuracy

DMM51FSG

20A 0.01A ± (2% rdg +5 digits)

200A 0.1A ± (0.8%rdg +1 digit)

2mA 1A± (0.8% rdg +1 digit)

20mA 10A

200mA 100A ± (1.5% rdg +1 digit)

2A 1mA ± (1.5%rdg +1 digit)

10A 10mA ± (2%rdg +5 digits)

OVERLOAD PROTECTIO : 2A/250V fuse (below 2A range) and 10A/250V fuse

(10A range).

MAX CURRE T I PUT: 10A

MEASURI G VOLTAGE DROP: Full range is 200mV.

B-4 ALTER ATI G CURRE T CURRE T (AC CURRE T)

Range Resolution Accuracy

DMM51FSG

200A 0.1A ± (1.8% rdg +3 digits)

2mA 1A ± (1% rdg +3 digits)

20mA 10A ± (1% rdg +3 digits)

200mA 100A ± (1.8% rdg +3 digits)

2A 1mA ± (1.8% rdg +3 digits)

10A 10mA ± (3% rdg +7 digits)

OVERLOAD PROTECTIO : 2A/250V fuse (below 2A range) and 10A/250V fuse

(10A range).

MAX CURRE T I PUT: 10A

MEASURI G VOLTAGE DROP: Full range is 200mV.

DISPLAY: Average Value (RMS of Sine Wave ).

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 4

B-5 RESISTA CE

Range Resolution Accuracy

DMM51FSG

200Ω0.1Ω± (0.8% rdg + 3 digits)

2KΩ1Ω

20KΩ10Ω

200KΩ100Ω± (0.8% rdg + 1 digit)

2MΩ1KΩ

20MΩ10KΩ±(1% rdg + 2 digits)

200MΩ100KΩ± [ 5% (rdg-10 + 10 digits) ]

VOLTAGE AT OPE CIRCUIT: ≤700mV (200MΩrange, open circuit voltage

around 3V).

OVERLOAD PROTECTIO : All ranges 250VDC or AC RMS.

CAUTIO : At 200MΩrange, as test lead is short circuit the LCD display 10 digits

is normal, deduct the 10 digits from the measured reading during

measuring.

B-6 DIODE TEST A D CO TI UITY BEEPER

Range Comment Measuring Condition

Display diode forward- Forward DC current abt 1mA

voltage near value, Backward DC voltage abt 2.8V

Unit “mV”

Beeper sounds if Voltage at open circuit

Continuity Resistance abt 2.8V

≤70Ω. Display near value

Unit “Ω”

OVERLOAD PROTECTIO : 250V DC or AC RMS.

B-7 TRA SISTOR hFE TEST

Range Comment Measuring Condition

hFE Can measure NPN Basic polarity current abt

or PNP transistor 10A,Vce abt 2.8V

hFE Range: 0-1000

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 5

TAKING MEASUREMENTS:

CAUTIO :

1. If there is no display or “ ” is shown on the LCD when the meter is switched on,

replace the battery ASAP.

2. Never exceed the maximum input voltage or current limits shown besides the input

jacks “ ”, otherwise the meter will be damaged and this is dangerous to life.

3. Turn the rotary switch to proper range before operating.

1. On/Off Switch

2. Liquid Crystal Display

3. Rotary switch

4. Transistor jack

5. Input jack

C-1 MEASURI G DC VOLTAGE

1) Connect the black test lead to “COM” jack and red test lead to “V” jack.

2) Set the rotary switch to “V ”.

3) Connect the test leads across with the object to be measured. LCD appears the

measuring value and also the polarity of the red test lead.

CAUTIO

1) If magnitude of the voltage being measured is unknown, always start with the

highest range and reduce until satisfactory reading is obtained.

2) If “1” is shown on the LCD, which means the meter is overloaded, then set the

measuring range to a higher range.

3) “ ” means never to exceed the maximum input limits of 1000V, otherwise

internal circuit of the meter will be damaged.

4) Take extra care of voltage leakage when measuring high voltage.

C-2 MEASURI G AC VOLTAGE

1) Connect the black test lead to “COM” jack and red test lead to “V” jack.

2) Set the rotary switch to “V~”.

3) Connect the test leads across with the object to be measured.

CAUTIO

1) Refer to “DC Voltage Caution” 1, 2, 4.

2) “ ” means never exceed the maximum input limit 750V, otherwise internal

circuit of the meter will be damaged.

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 6

C-3 MEASURI G DC CURRE T

1) Connect the black test lead to “COM” jack. When measuring 2A or below,

connect the red test lead to “A” jack. When measuring 10A or below, connect

the red test lead to “10A” jack.

2) Set the rotary switch to “A ”.

3) Connect the test leads in series with the object to be measured, the LCD

display the measuring value and polarity of red test lead.

CAUTIO

1) If magnitude of the current is unknown, always start with the highest range

and reduce until satisfactory reading is obtained.

2) If “1” is shown on the LCD, which means the meter is overloaded, then set the

measuring range to higher.

C-4 MEASURI G AC CURRE T

1) Connect the black test lead to “COM” jack. When measuring 2A or below,

connect the red test lead to “A” jack. When measuring 10A, connect the red

test lead to “10A” jack.

2) Set the rotary switch to“A~”.

3) Connect the test leads in series with the object to be measured.

CAUTIO

1) Please refer to “DC Current Caution” 1, 2.

C-5 MEASURI G RESISTA CE

1) Connect the black test lead to “COM” jack and red test lead “Ω” jack.

2) Set rotary switch to“Ω”.

3) Connect the test leads across with the object to be measured.

CAUTIO

1) If “1” is shown on the LCD, which means the meter is overloaded, then set a

higher measuring range. If resistance is above 1MΩ, the reading will only be

steady after a few seconds which is normal for measuring high value of

resistance.

2) “1” is displayed when open circuit or no input.

3) Make sure all objects, circuit and components to be measured are without

voltage.

4) 200MΩshort circuit has 10 digits which need to be deducted after the reading

when making measurement. For example, when measuring 100MΩ, it displays

101.0, 10 digits need to be deducted.

C-6 MEASURI G DIODE A D CO TI UITY BEEPER

1) Connect the black test lead to “COM” jack and red test lead to “V” jack.

2) Set the rotary switch to “ ”

3) Connect the test lead across with the object being measured. LCD appears the

measuring value.

4) Connect the test lead to two ends of the object being measured, the beeper

sounds if the resistant value between the two ends is less than 70Ω.

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 7

C-7 MEASURI G TRA SISTOR hFE

1) Set rotary switch to “hFE”.

2) Identify NPN or PNP, connect objects to the correspondent transistor jack.

3) LCD displays measuring value.

4) Measuring condition: Ib ≈10A, Vce ≈2.8V

MAINTENANCE:

The DMM51FSG is a highly precise electrical testing instrument, do not attempt to

change the circuit of your meter on your own. Take a note of the following points:

1) Do not input to DC Voltage above 1000V or AC above 750V RMS.

2) Do not input Voltage when the rotary switch is in Current Range, Ωand .

3) Do not operate the meter if battery is not inside the meter or the casing is not

securely screwed together.

4) Disconnect the test leads and power off the meter before replacing the battery

and fuses.

5) To replace the battery, loosen the screws on the back cover and open the case.

Replace the exhausted battery with a new one of the same type.

The fuse rarely needs to be replaced and is usually blown as a result of

operator error. To replace the fuse, open the case as above and replace the

blown fuse with the ratings specified: F 2A/250V or F10A/250V.

ACCESSORIES:

1) User’s manual 2) Test leads 3) olster

USING HOLSTER:

Three different ways to use holster:

1) Set holster parallel on the table, do not open the tilt stand (see Figure 1).

2) Set holster in a small angle on the table, tilt it up by the first part of tilt stand

(see Figure 2)

3) Set holster in a large angle on the table, tilt it up by all two parts of tilt stand

(see Figure 3).

USING STRAP:

1) Feed the front end of the strap through the

round metal loop of the meter

(see part 1 of the diagram).

2) Put the bottom end of the strap through the

front and pull it through

(see part 2 of the diagram).

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 8

DMM51FSG

MANUAL DEL USUARIO

INTRODUCCIÓN:

El DMM51FSG s un instrum nto d 3 ½ dígitos, portátil y d alta confiabilidad.

El instrum nto mpl a circuitos int grados d avanzada agrupados alr d dor

d un conv rsor A/D dobl y ofr c un rango compl to d prot ccion s contra

sobr cargas. El DMM51FSG pu d m dir lo sigui nt : Corri nt n CC, corri nt

n CA, voltaj n CC, voltaj n CA, r sist ncia, diodos y continuidad, lo qu lo

constituy n una h rrami nta id al para cualqui r usuario.

NORMAS DE SEGURIDAD:

•El DMM51FSG cumple con las categorías I (1000V), II (600V) y III (300V) de

sobretensión de la norma IEC 1010-1. Use el instrumento solo como se especifica

en este manual, o podría menoscabar la protección que el mismo ofrece.

•CAT I: Para tensiones al nivel de señales, telecomunicaciones o electrónica con

pequeños transitorios de sobretensión.

•CAT II: Para instalaciones, artefactos, tomacorrientes de pared y equipos

portátiles.

•El instrumento está diseñado para soportar los máximos niveles de tensión

indicados. Por cuestiones de seguridad, no exceda los rangos de tensión máxima

especificados.

•No opere el instrumento antes de cerrar y atornillar por completo su carcasa,

ya que los terminales pueden tener tensión.

•Antes de realizar la medición, asegúrese de que el instrumento tiene seleccionada

la escala adecuada.

•Antes de utilizar el instrumento, por favor inspeccione su carcasa y puntas de

prueba para detectar daños de aislamiento o partes metálicas expuestas.

•Conecte adecuadamente las puntas de prueba roja y negra a los respectivos

terminales de entrada.

•Para evitar daños al instrumento, no le aplique entradas superiores al rango

máximo de la escala de medición empleada.

•No gire la llave selectora giratoria mientras realiza una medición de voltaje o de

corriente, ya que esto podría dañar el instrumento.

•Asegúrese de usar fusibles nuevos del valor adecuado. No use fusibles

incorrectos.

•Para descargas eléctricas o daños, no aplique más de 1000V entre los terminales

“COM” y “tierra” .

•Tenga cuidado cuando trabaje con tensiones por sobre los 60V de CC o los

30 Vrms de CA. Estos voltajes pueden producir una descarga eléctrica.

•Reemplace la batería tan pronto como aparezca el icono indicador “ ”.

Con batería baja, el instrumento podría dar lecturas falsas y que podrían conducir

a descargas eléctricas y daños personales.

•Apague el instrumento al finalizar las mediciones. Remueva su batería cuando no

lo vaya a usar por prolongados períodos de tiempo.

•No opere el instrumento en condiciones ambientes adversas, tales como humedad

excesiva.

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 9

•Para evitar daños y riesgos al operarlo, no altere ni modifique su circuito.

•Para limpiarlo, repase la carcasa con un trapo húmedo y detergente suave.

No emplee abrasivos ni solventes.

•Símbolos eléctricos internacionales:

Batería Baja Tierra

Reglas de seguridad Doble aislamiento

CA Diodo

Voltajes peligrosos Zumbador

CC Fusible

CARACTERÍSTICAS:

33 ESCALAS, 8 FU CIO ES:

• Pantalla de cristal líquido, altura del dígito: 27mm

• Fuera de escala muestra “1”

• Lectura máxima “1999” (3 ½ dígitos)

• Protección total contra sobrecargas

• Temperatura:

Operación: 32° a 104°F (0° a 40°C)

Almacenamiento: 14° a 122°F (-10° a 50°C)

• Altitud:

Operación: 2000m

Almacenamiento: 10000m.

• umedad relativa:

umedad relativa máx. de 80% para temperaturas hasta los 88ºF (31°C),

disminuyendo linealmente hasta el 50% de humedad relativa ambiente a

los 104ºF (40°C)

• Indicador de batería baja “ ”

• Correa para facilitar su transporte

• Soporte con tres ángulos de inclinación

• Dimensiones: 7.5" x 3.5" x 1.3" (190 x 88 x 34mm)

• Peso:

Solo el instrumento (excluye puntas de prueba): 9,5oz (270g) aprox.

Instrumento, cartuchera y soporte inclinable: 19,4oz (550g) aprox.

ESPECIFICACIONES:

La precisión está especificada por un año después de la calibración, a temperaturas

de operación de 23°C, +/- 5°C y con una humedad relativa < 75%.

Las especificaciones de precisión tienen la forma de:

+/- (a% de la lectura + b dígitos)

DMM51FSG Manual FINAL-091908:Layout 1 9/19/08 4:03 PM Pag 10

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