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DIGITAL MULTIMETRU

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M890D
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Descriere

The M890G digital multimeter

M890G digital multimeter

The M890G digital multimeter is a great buy for the hobbyist, technician or auto mechanic. Measures DC Volts and AC Volts at 10Mohm input impedance, DC and AC current, resistance up to 20M ohm, capacitance up to 20uF, frequency up to 20KHz, and temperature all the way up to 1000°C.

Includes a dedicated transistor socket for NPN and PNP transistor testing, auto power off to save batteries, audible continuity and diode testing, and a big display. Comes with standard test leads and a temperature test probe (K type thermocouple).

The popular 890 multimeter family includes many models: M890B+, M890D, M890C+, M890F, M890G, DT-890G and many more, all using the robust ICL7106 2000 count IC.

M890G schematic diagram (GIF)

Technical specifications

Note: The following values can differ slightly from model to model; consult your user manual for your meter's technical specifications.

DC Volts

Input impedance: 10MΩ

RangeResolutionAccuracy
200mV 0.1mV ± 0.5% of rdg ± -1 digit
2V 1mV ± 0.5% of rdg ± 1 digit
20V 10mV ± 0.5% of rdg ± 1 digit
200V 100mV ± 0.5% of rdg ± 1 digit
1000V 1V ± 0.8% of rdg ± 2 digits

AC Volts

Input impedance: 10MΩ at all ranges.
Frequency Response: 40Hz - 200Hz (40Hz-100Hz for the 200V and 700V range).
Overload Protection:
- 200mV: max. 15 seconds at a voltage of 300V AC
- all other ranges: 750V AC or 1000V DC.

RangeResolutionAccuracy
200 mV 0.1mV ± 1.2% of rdg ± 3 digits
2V 1 mV ± 0.8% of rdg ± 3 digits
20V 10 mV ± 0.8% of rdg ± 3 digits
200V 100 mV ± 0.8% of rdg ± 3 digits
700V 1V ± 1.2% of rdg ± 3 digits

DC Amps

Overload protection: 0.2A / 250V fuse
The 20A range is unfused. Maximum input current: 20 A for 15 seconds.

RangeResolutionAccuracy
2mA 1µA ± 0.8% of rdg ± 1 digit
20mA 10µA ± 0.8% of rdg ± 1 digit
200mA 100µA ±1.2% of rdg ± 1 digit
20A 10mA ± 2.0% of rdg ± 5 digits

AC Amps

Overload protection: 0.2A / 250V fuse
The 20A range is unfused. Maximum input current: 20 A for 15 seconds.

RangeResolutionAccuracy
200mA 100µA ± 2.0% of rdg ± 3 digits
20A 10mA ± 3.0% of rdg ± 7 digits

Note: some models have a 20mA range with a resolution of 10 µA and ±1,2% ± 3 digits accuracy.

Resistance (Ohms)

RangeResolutionAccuracy
200Ω 0,1Ω ± 0.8% of rdg ± 3 digits
2kΩ 1Ω ± 0.8% of rdg ± 1 digits
20 kΩ 10Ω ± 0.8% of rdg ± 1 digits
200 kΩ 100Ω ± 0.8% of rdg ± 1 digits
2MΩ 1kΩ ± 0.8% of rdg ± 1 digits
20MΩ 10kΩ ± 1% of rdg ± 2 digits
200MΩ (a few models only) 100 kΩ ± 5% of rdg ± 10 digits

Capacitance

RangeResolutionAccuracy
2000pF 1pF ± 2.5% of rdg ± 5 digits
20nF 10pF ± 2.5% of rdg ± 5 digits
200nF 100pF ± 2.5% of rdg ± 5 digits
2µF 1nF ± 2.5% of rdg ± 5 digits
20µF 10nF ± 2.5% of rdg ± 5 digits

Frequency

RangeResolutionAccuracy
20kHz 10Hz ± 1% of rdg ± 1 digits

Transistor hFE test

hFE range:0-1000
Ib: ~10µA
Uce: ~ 2,8V.

Temperature

"K" type thermocouple

RangeResolutionAccuracy
-50°C - 400°C 1°C ± 0.75% of rdg ± 3 digits
400°C-1000°C 1°C ± 1.5% of rdg ± 15 digits

Diode and conductivity test

Diode test forward current: ~ 1mA.
Voltage: ~ 2.8V
The built-in buzzer will sound, if the resistance under test is less than about 30 ohms.

Informatii despre garantie

1 An

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