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Digital Multimeter


SD-420C

INTRODUCTION
This is a full auto ranging DMM of an ultra-thin notebook type. 3 1/2 digit LCD display having a unit display and a polarity display is employed in a display portion. Handy multimeter usable even by a beginner also with an easy conscience due to provision of a high-speed response continuity buzzer, and an overload protection circuit, and so forth.

FEATURES
Compact card size digital multimeter.
Four functions: DCV, ACV, ohm and beeper continuity test can be executed by
one rotary switch.
In-circuit continuity beeper is employed. And resistance measurement can be
made by means of low voltage. That is also suitable for measuring the resistance
in the semi-conductor circuit.
Sharp contrast LCD with character 10 mm high is employed, and unit symbols
such as mV and M ohm, and polarity is displayed on the screen of the LCD.
Optimum measuring range is automatically selected to set.
Speedy response for continuity test.
Two button-type batteries are employed. Power consumption is only 3mW.

SPECIFICATIONS
Operating principle__ Dual slope integration
Display__ 3 1/2 digit in LCD
Bar Graph__ Null
Range switch__ Auto range
Over display__ MSB "1" blinks
Polarity switch-1__ Auto
Low battery indication__"LO" symbol
Sampling__ Approx.2 times/sec
Bar Graph 2__ Null
Accuracy guaranteed temperature& humidity ranges__18'c- 28'c, 80%R.H. Max.
No condensation
Operating temperature& humidity range__0'c- 40'c, 80%R.H. Max. No condensation
Storage temperature humidity range__-20'c-60'c, 70%R.H. Max. No condensation
Power supply __LR-44 x 2
Consuming power__Approx.4mW Typ
Operating time__130 hours
Dimension__108 x 54 x 8mm
Weight__Approx. 85g
Instruction manual__English
Carrying case

Function

Range Accuracy Resolution

Input Resistance

Maximum Input Voltage
(Max. 1 minute)

Remarks 

DCV

200mV

 (2.0%rdg+4dgt)

10V

100M

650V DC or DC AC peak

-

2V

 (0.7%rdg+4dgt)

1mV

12M

20V

 (1.3%rdg+4dgt)

10mV

11M

200V

 (1.3%rdg+4dgt)

100mV

11M

500V

 (1.3%rdg+4dgt)

1V

11M

ACV

2V

 (0.4%rdg+40dgt)

1mV

12M

40Hz - 500Hz

20V

 (2.3%rdg+8dgt)

10mV

11M

200V

 (2.3%rdg+8dgt)

100mV

11M

500V

 (2.3%rdg+8dgt)

1V

11M


Function

Range Accuracy Resolution

Open Circuit Voltage

Maximum Input Voltage
(Max. 1 minute)

Remarks

RESISTANCE 

200

 (2.0%rdg+4dgt)

100m

< 0.45V

AC/DC 250V

-

2k

(2.0%rdg+4dgt)

1

20k

 (2.0%rdg+4dgt)

10 

200

(2.0%rdg+4dgt)

100

2000k

(2.0%rdg+4dgt)

1k

20M

(5%rdg+4dgt)

10k

1.80M-10.00M

-

(10%rdg+4dgt)

-

10.01M-20.00M

CONTINUITY

 The buzzer sounds between 1.5 and 15.

Approx. 1.5V

-

DIODE TEST

-

Approx. 3V

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Bhumika International Inc.
Ph: +1 (416) 930 2931
E-mail: info@bhumika.ca
Website: http://www.bhumika.ca

Technical Specifications are subject to change without notice.
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