Emos M92A Manual

Emos Multimeter M92A

Læs gratis den danske manual til Emos M92A (17 sider) i kategorien Multimeter. Denne vejledning er vurderet som hjælpsom af 38 personer og har en gennemsnitlig bedømmelse på 4.7 stjerner ud af 19.5 anmeldelser. Har du et spørgsmål om Emos M92A, eller vil du spørge andre brugere om produktet?

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M-92A

GB DIGITAL MULTIMETER

CZ DIGITÁLNÍ MULTIMETR

SK DIGITÁLNY MULTIMETER

PL MULTIMETR CYFROWY

UNIVERZÁLIS DIGITÁLIS KÉZIMŰSZER

DIGITALNI MULTIMETER

DIGITALNI MULTIMETAR

DIGITALES MULTIMETER

ЦИФРОВИЙ МУЛЬТИМЕТР

MULTIMETRU DIGITAL

LT SKAITMENINIS MULTIMETRAS

LV DIGITĀLAIS MULTIMETRS

DIGITAL MULTIMETER M-92A

INTRODUCTION

This instrument is compact, battery operated, handheld 3 1/2 digit digital multi-

meter for measuring DC and AC voltage. DC and AC current, resistance, diode and

continuity test. The Dual-Slope A-D converter uses C-MOS technology for auto-

zeroing. Polarity selection and over-range indication full overload protection is

provided. It is specially designed with high stability for use on modern computerized

circuits and laboratory, workshop, hobby and home applications.

FEATURES

• Single 24 position easy to use rotary switch

• High sensitivity of 100μV

• Automatic over range indication with the “1” or “-1” displayed

• Automatic polarity indication on DC range

• All ranges fully protected

• Diode testing with 1mA xed current

• Transistor hFE test (optional)

GENERAL CHARACTERISTICS

Maximum LCD display: 1999 counts (31/2 digits) with automatic polarity indication

Measuring Method: Dual-slope integration A-D converter system

Overrange Indication: “1” or “-1” gure only in the display

Maximum common mode voltage: 500V DC/AC rms

Reading rate: 2~3 reading per sec. (approximate)

Temperature for guaranteed accuracy: 23±5°C.

Temperature Ranges: Operating 0°C to 40°C (32°F to 104°F); Storage -10°C to

50°C (14°F to 122°F)

Power Supply: One 9V battery (NEDA 1604 or 6F22 type or equivalent).

Low Battery Indication: to left of display.

Size: 85(W) × 165(D) × 32(H)mm.

Weight: 250g (including 9 Volt battery)

Accessories: Operating manual, set of test leads.

SPECIFICATIONS

Accuracies are: ± (% reading + No. of digits).

Guaranteed for 1 year: 23°C ±5°C, less than 75% R.H.

OPERATION

1. Switch the meter on and check the 9V battery, if the battery is weak, a sign

will appear on the display. If this does not appear on the display, proceed as

below, see MAINTENANCE if the battery has to be replaced.

2. The mark or sign next to the test lead jacks, is for warning that the input

voltage or current should not exceed the indicated values.

This is to prevent damage to the internal circuit.

3. The function switch should be set to the range which you want to test before

operation.

DC Voltage Measurement

1. Connect the BLACK test lead to the COM jack and the RED test lead to the V/Ω

jack.

2. Set the FUNCTION switch to the “V” range to be used and connect the test

leads across the source or load under measurement. The polarity of the RED

lead connection will be indicated at the same time as the voltage.

NOTE:

a) If the voltage range is not known beforehand set the FUNCTION switch to a

high range and work down.

b) When only the gure “1” is displayed, over range is being indicated and the

FUNCTION switch must be set to a higher range.

c) Do not apply more than 1000V to the input, indication is possible at higher

voltages but there is danger of damaging the internal circuitry

d) Use extreme caution to avoid contact with high tension circuits when measuring

high voltage.

Range Accuracy Resolution

200mV

±0.5% of rdg ±1 digit

100μV

2V 1mV

20V 10mV

200V 100mV

1000V ±0.8% of rdg ±2 digits 1V

Input impedance: 10MΩ on all ranges

Overload protection: 250V rms on 200mV range and 1000V DC or peak AC on

all other ranges.

AC Voltage Measurement

1. Connect the BLACK test lead to the COM jack and the RED test lead to the V/Ω

jack.

2. Set the FUNCTION switch to the “V” range to be used and connect the test leads

across the source or load under measurement.

NOTE:

• See DC Voltage measurement Note a), b).

• Do not apply more than 750V rms to the input. Indication is possible at higher

voltages but there is danger of damaging the internal circuitry.

• Use extreme caution to avoid contact with high tension circuits when measuring

high voltage.

Range Accuracy Resolution

±0.8% of rdg ±3 digits

1mV

20V 10mV

200V 100mV

750V ±1.2% of rdg ±3 digits 1V

Input impedance: 10MΩ on all ranges

Frequency range: 40Hz to 400Hz

Overload protection: 750V rms or 1000V peak continuous on all ranges.

Indication: Average (rms of sine wave)

DC Current Measurement

1. Connect the BLACK test lead to the COM jack and the RED test lead to the mA

jack for a Maximum of 200mA. For a maximum of 20A move the red test lead

to the 20A jack.

2. Set the FUNCTION switch to the “A” range to be used and connect the test leads

in series with the load under measurement. The polarity at the RED test lead

connection will be indicated at the same time as the current.

NOTE:

a) If the current range is not known beforehand. Set the FUNCTION switch to a

high range and work down.

b) When only the gure “1” is displayed overrange is being indicated and the

FUNCTION switch must be set to a higher range.

c) The maximum input current is 200mA or 20A depending upon the jack used

excessive current with blow the fuse which must be replaced. The 20A range is

not protected by a fuse. The fuse rating should be 0.2A and no more to prevent

damage to the internal circuitry.

Range Accuracy Resolution

2mA ±1.2% of rdg ±3 digits 1μA

20mA 10μA

200mA ±2% of rdg a ±3 digits 100μA

20A ±3% of rdg ±7 digits 10mA

Overload protection: F 0.2A/250V fuse. (20A range not fused)

Maximum input current: 20A, 15sec.

AC Current Measurement

1. Connect the BLACK test lead to the COM jack and the RED test lead to the mA

jack for a maximum of 200mA. For a maximum of 20A, move the red test lead

to the 20A jack.

2. Set the FUNCTION switch to the “A” range to be used and connect the test lead

in series with the load under measurement.

NOTE:

The maximum input current is 200mA or 20A depending upon the jack used.

Excessive current will below the fuse which must be replaced. The 20A range is

not protected by a fuse. The fuse rating should be 200mA and no more to prevent

damage to the internal circuit.

The maximum terminal voltage drop is 200mV.

Range Accuracy Resolution

2mA ±0.8% of rdg ±1 digit 1μA

20mA 10μA

200mA ±1,2% of rdg ±1 digit 100μA

20A ±2% of rdg ±5 digits 10mA

Overload protection: F 0.2A/250V fuse. (20A range not fused.)

Frequency range: 40Hz to 400Hz.

Maximum input current: 20A, 15sec.

Indication: Average (rms of sine wave)

Resistance Measurement

1. Connect the BLACK test lead to the COM jack and the RED test lead to the V/Ω

jack. (Note: The polarity of the RED test lead is “+”).

2. Set the FUNCTION switch to the Ω range to be used and connect the test leads

across the resistance under measurement.

NOTE:

a) If the resistance value being measured exceed the maximum value of the range

selected, an overrange indication will be displayed “1”, select a higher range.

For Resistance of approximately 1MΩ and above. The meter may take a few

seconds to become stable. This is normal for high resistance readings.

b) When the input is not connected, i.e. at open circuit, the gure “1” will be

displayed for the overrange condition.

c) When checking in–circuit resistance, be sure the circuit under test has all power

removed and that all capacitors are fully discharged.

Produkt Specifikationer

Mærke:	Emos
Kategori:	Multimeter
Model:	M92A

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