KN 8058

Digital professional multimeter

Multímetro digital profesional

Overview ..................................................... 1

Unpacking Inspection ................................... 1

Safety Information ........................................ 1

Rules For Safe Operation ............................. 1

International Electrical Symbols .................... 2

The Meter Structure .................................... 2

C. Measuring Resistance ........................... 4

D. Testing for Continuity ............................ 5

E. Testing Diodes ....................................... 5

F. Capacitance Measurement .................... 5

G. Frequency Measurement ...................... 6

I. Transistor hFE Measurement ................ 6

J. EF Function ........................................... 7

Operation of Hold Mode .............................. 7

RANGE Button ............................................ 7

Safety Information

This Meter complies with the standards IEC61010:

in pollution degree 2, overvoltage category (CAT.

III 1000V, CAT. IV 600V) and double insulation.

CAT III: Distribution level, fixed installation, with

smaller transient overvoltages than CAT. IV.

CAT IV: Primary supply level, overhead lines, cable

systems etc.

Use the meter only as specified in this operating

manual, otherwise the protection

International electrical symbols used on the

on page 2.

Rules For Safe Operation

Digital multimeter KN 8058 is an auto ranging

multimeter. the enclosure structure design

adopted advanced “co-injection” tecchnique in

order to provide sufficient insulation.

The multimeter can measure AC/DC voltage

and current, resistance, diode, continuity

Open the package case and take out the meter.

missing or damaged part:

PThe Use of Relative Value Mode ................... 7

The BLUE Button ............................................ 7

Turning on the Display Backlight ...................... 7

Sleep Mode .................................................... 7

General Specifications ..................................... 7

Accuracy Specifications .................................. 8

A. DC Voltage .............................................. 8

B. AC Voltage .............................................. 8

C. DC Current ............................................. 8

D. AC Current .............................................. 8

Maintenance .................................................... 9

A. General Service ....................................... 9

B. Replacing the Battery ............................... 9

C. Replacing the Fuses ................................. 9

safety information” and “Rules for safety

operation” carefully before using the meter.

injury, and to avoid possible damage to the

meter or to the equipment under test, adhere to

of the case) is removed. Look for cracks or

missing plastic. Pay attention to the insulation

around the connectors.

• Inspect the test leads for damaged insulation or

exposed metal. Check the test leads for

continuity. Replace damaged test leads with

identical model number or electrical

specifications before using the meter.

• Do not apply more than the rated voltage, as

marked on the Meter, between the terminals or

over 60V in DC or 30V rms in AC, special care

should be taken for there is danger of electric

shock.

• Do not use or store the Meter in an environment

of high temperature, humidity, explosive,

inflammable and strong magnetic field. The

performance of the Meter may deteriorate after

dampened.

• When using the test leads, keep your fingers

behind the finger guards.

connecting the circuit reliably, turn the current to

be tested on.

• Replace the battery as soon as the battery

indicator appears. With a low battery, the

meter might produce false readings that can

lead to electric shock and personal injury.

• When servicing the meter, use only the same

model number or identical electrical

specifications replacement parts.

• The internal circuit of the meter shall not be

SymbolNo.

μA, mA,

A

nF, μF,

Hz, kHz,

Measurement Operation

A. DC/AC Voltage Measurement (See figure 2)

B. DC/AC Current Measurement (See figure 3)

When measuring high voltage, take extra care to

avoid electric shock.

1. Insert the red test lead into the V terminal

and the black test lead into the COM terminal.

2. Set the rotary switch to V; DC measurement in

DC and AC measurement mode.

3. Connect the test leads across with the object

• In each range, the Meter has an input impedance

of 10MΩ except mV range which input impedance

is 3000M

. This loading effect can cause

measurement errors in high impedance circuits.

If the circuit impedance is less than or equal to

10k

, the error is negligible (0.1% or less).

• When measuring mV, you must press RANGE

manually to enter mV range.

•

When voltage measurement has been completed,

disconnect the connection between the testing

If the fuse burns out during measurement, the

Meter may be damaged or the operator himself

may be hurt.

Use proper terminals, function, and range for the

When the testing leads are connected to the current

terminals, do not parallel them across any circuit.

To measure current, do the following:

1. Insert the red test lead into the

mA or A input

4. Connect the test lead in serial to the return

circuit to be tested. The measured value shows

on the display.

5. Press Hz% to obtain the frequency and duty

cycle value.

• If the value of current to be measured is unknown,

be greater than 15 minutes.

• When current measurement has been completed,

disconnect the connection between the testing

leads and the circuit under test, and remove the

testing leads away from the input terminals of the

Meter.

C. Measuring Resistance (See figure 4)

DC 60V or AC 30V voltages.

To measure resistance, connect the Meter as

1. Insert the red test lead into the

terminal and

the black test lead into the COM terminal.

2. Set the rotary switch to

measurement (

) is default or press BLUE

button to select

measurement mode.

3. Connect the test leads across with the object

being measured. If there is lead on the resistor

• The LCD displays OL indicating open-circuit for

button to select nF measurement mode.

• At that time, the Meter will display a fixed

distributed capacitance value. To ensure

accuracy when measuring a small value of

capacitance, the tested value must subtract

this value, REL mode can help on that.

• For more convenience, use the included

multi-purpose socket for measuring capacitor

with leads or SMT capacitor. Insert the

the display.

• It takes a longer time when the tested

capacitor is more than 100uF

• The LCD displays OL indicating the tested

capacitor is shorted or it exceeds the

maximum range.

• When capacitance measurement has been

completed, disconnect all the connection

between multi-purpose socket, capacitor

2. Set the rotary switch to Hz%; frequency

3. Connect the test leads across with the object

being measured. The measured value shows

on the display.

4. If you need to measure duty cycle, press

Hz% button to select % measurement mode.

between the testing leads and the circuit

under test, and remove the testing leads

away from the input terminals of the Meter.

1. Set the rotary

switch to hFE.

2. Insert the multi-purpose

socket into the input

terminal as

shown on

figure 9.

3. Insert the transistor

to be tested into the

corresponding

between multi-purpose socket, transistor

and the Meter.

To use EF function, connect the Meter as follows:

lead from

the input

terminals.

G. Frequency Measurement (See figure 8)

I Transistor hFE

input higher than 30V rms tested frequency voltage

figure 10

} LCD displays different size of digits to

} When the LCD displays OL, the buzzer beeps

and the red LED blinks.

Operation of Hold Mode

RANGE button

use Hold mode to determine if circuits are without

power. The Hold mode will not capture unstable or

• Press HOLD to enter Hold mode; the Meter

beeps.

• Press HOLD again to exit Hold mode; the Meter

beeps.

• In Hold mode, is displayed.

• Press and hold HOLD/LIGHT for over 2 seconds

to turn the display backlight on.

• The display backlight will automatically off around

after 10 seconds.

• Maximum Voltage between any Terminals and

Grounding: Refer to the different ranges input

protection voltage.

• Fused Protection for

AmA Input Terminal:

1A H 240V ø6x25mm.

• Fused Protection for 10A Input Terminal:

10A H 240V ø6x25mm.

• Display

}

analogue bar graph 41 segments

the Meter beeps.

• Press RANGE to step through the ranges available

for the selected function; the Meter beeps.

• Press and hold RANGE for over 2 seconds to

return to autoranging; the Meter beeps.

MAX MIN button

• Press MAX MIN to start recording of maximum

and minimum values. Steps the display through

high (MAX) and low (MIN) readings. The Meter

enters manual ranging mode after pressing MAX

The Use of relative value mode

The REL mode applies to all measurement functions

except frequency/duty cycle measurement.

It subtracts a stored value from the present

measurement value and displays the result.

For instance, if the stored value is 20.0V and the

present measurement value is 22.0V, the reading

would be 2.0V. If a new measurement value is

equal to the stored value then display 0.0V.

To enter or exit REL mode:

It uses for selecting the required measurement func-

tion when there is more than one function at one

position of the rotary switch.

Turning on the Display backlight

Sleep mode

General Specifications

• Temperature:

}

}

Fuse 1:

F1A H 240V (CE),

ø6 x 25mm

Fuse 2:

F10A H 240V (CE),

ø6 x 25mm

Fuse 1:

F1A H 240V (CE),

ø6 x 25mm

Fuse 2:

There is

around

±(4.0%+5)

V dc

/750 V ac

Maximum resolution

0.01 Hz

• Weight: Approximate 370 g (battery included).

• Safety/Compliances: IEC61010 CAT.III 1000V,

CAT.IV 600V over voltage and double insulacion

standard.

Accuracy ± a% reading + b digits guarantee

400Ω

4kΩ

40kΩ

400kΩ

4MΩ

40MΩ

V dc

/750 V ac

3. Conecte las puntas de prueba en el objeto a

medir. El valor medido se muestra en la pantalla.

4. Si necesita medir el ciclo de trabajo,

presione el botón Hz% para seleccionar el

•

la conexión entre las puntas de prueba y el circuito

bajo prueba, y desconecte las puntas de prueba de

de

entrada.

G. Medición de frecuencia (ver Figura 8)

I Medición del transistor

hFE (Ver Figura 9)

J. Función EF (ver Figura 10)

ingresar una tensión de frecuencia mayor

a 30 V rms.

figura 10

} La pantalla muestra diferentes tamaños de

} Cuando la pantalla muestra OL, el zumbador

emite un pitido y el LED rojo parpadea.

circuitos están sin energía eléctrica. El modo Hold

no capturará lecturas inestables o ruidosas.

Para evitar riesgos relacionados con lecturas

erróneas cuando la iluminación es insuficiente o la

visión es deficiente, utilice la retroiluminación de la

El modo Hold se puede aplicar a todas las funciones

de medición.

• Pulse HOLD para ingresar el modo Hold;

• Pulse y mantenga pulsado HOLD/LIGHT durante

2 segundos para encender la retroiluminación

• La retroiluminación de la pantalla se apagará

Para preservar la carga de la batería, el multímetro

se apaga automáticamente si no se gira el selector

giratorio o no se pulsa ningún botón durante unos

15 minutos.

El multímetro puede activarse al girar el selector

giratorio o pulsar cualquier botón.

Para desactivar la función del modo de reposo, pulse

el botón AZUL mientras enciende el multímetro.

• Tensión máxima entre los terminales y la puesta

a tierra: Refiere la protección de tensión de

}

Lectura máxima 4000 (frecuencia 9999),

gráfico de barras analógico de 41 segmentos.

• Velocidad de medición: Se actualiza 2-3

veces/segundo.

• Rango: Automático o manual

• Polaridad de pantalla: Auto

• Indicación de sobrecarga: Pantalla OL

• Deficiencia de la batería: Pantalla

• Pulse RANGE para ingresar el modo de

rango manual; el multímetro emite un pitido.

Botón MAX MIN

• Pulse MAX MIN para iniciar la grabación de

entre lecturas alta (MAX) y baja (MIN). El multímetro

ingresa el modo manual de medición después

de presionar el botón MAX MIN.

• Pulse y sostenga MAX MIN durante más de 2

segundos para salir del modo MAX MIN y volver

al rango actual de medición.

Modo de uso de valor relativo

2,0 V. Si un nuevo valor de medición es igual al valor

almacenado entonces mostrará 0,0 V.

Para ingresar o salir del modo REL:

• Pulse REL para ingresar al modo REL, y el

rango actual de medición está bloqueado

y se muestra “0” como valor almacenado.

• Pulse REL nuevamente para restablecer el

valor almacenado y salir del modo REL.

El botón AZUL

Se utiliza para seleccionar la función de medición

}

}

Almacenamiento: -10 ºC a + 50 ºC (14 ºF a + 122 ºF.)

• Humedad relativa:

}

}

• Tipo de batería: Una pieza de 9 V (NEDA 1604

o 6F22 o 006P)..

de sinusoidal.

de entrada debe cumplir el siguiente requisito:

Amplitud de entrada rango x 30%

Respuesta de frecuencia: 400 Hz

A. Tensión de CD

B. Tensión de CA

• Muestra el valor efectivo de la onda sinusoidal.

El rango mV es aplicable desde el 5 % del rango

hasta el 100 % del rango.

400mv

0.1mV

±(0.5%+1)

±(1.0%+3)

±(1.2%+5)

±(1.2%+5)

Impedancia

de entrada

Impedancia

Fusible 1:

F1A H 240V (CE),

ø6 x 25mm

Fusible 2:

el modelo mencionado tiene un error de medición,

y regresa al estado normal cuando se elimina

la interferencia.

• Dimensiones (A x A x L): 180 x 87 x 47 mm.

Hay una

lectura

residual

H. Prueba de diodo

I. Prueba de continuidad

Esta sección contiene información de mantenimiento

básico, como por ejemplo las instrucciones para

remplazar la batería y los fusibles.

Para evitar descargas eléctricas o daños en el

multímetro, se debe evitar que entre agua en la caja.

• Apague el multímetro cuando no esté en uso.

• Quite la batería cuando no se utilice durante

• No utilice ni guarde el multímetro en un

Asegúrese de que las puntas de prueba están

compartimiento de la

batería y la parte de la

carcasa inferior y vuelva

a colocar el tornillo.

Para probar el fusible: (ver Figura 12)

Si el multímetro no responde cuando se mide la

corriente y el transistor hFE, inspeccione los

fusibles incorporados al multímetro para

determinar si están dañados.

Cómo remplazar un fusible del multímetro:

inclinación de la carcasa inferior.

3. Retire los dos tornillos de la carcasa inferior y

separe las partes superior e inferior de la caja.

4. Retire el fusible apalancando suavemente el

5. Instale SÓLO fusibles de repuesto del mismo

tipo y con las mismas especificaciones detalladas

firmemente en el soporte.

6. Coloque nuevamente la parte inferior y la parte

y cuente con la información de calibración, prueba

de funcionamiento y mantenimiento correspondiente.

figura 12

Para evitar

lecturas falsas, que

podrían conducir a

posibles descargas eléctricas o lesiones físicas,

cambie la batería tan pronto como aparezca

el indicador de batería“c”.

Para evitar una

descarga eléctrica, una ráfaga

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