Digital Multimeter

Compact Multimeter

 Inexpensive compact digital mutimeter. 

 While this won't replace your "g to" multimter it is great for hobbyists, projects and as a spare.  

Comes with 9v battery. We leave these lying around the shop for quick checks. I

f we  drop them, break them, they are so inexpensive we just grab another one.

 

3-1/2 Digit 19 Range Digital Multimeter Description

3-1/2 Digit 19 Range Digital Multimeter

This digital multimeter is compact and light for easy storage and portability.

 At its heart is the reliable ICL7106 integrated circuit coupled to a large 3-1/2 digit, 

7 segment, 0.5" tall LCD display,

 featuring a maximum reading of 1999.

 Includes 9V battery as well as positive and negative test probes with banana plugs.

 Dimensions: 4-7/8" L x 2-11/16" W x 15/16" D.

Measures:

• DC voltage: 0.1mV to 1000V

• AC voltage: 0.1 to 750V

• DC current: 0.1mA to 10A

• Resistance: 0.1 Ohm  to 2M Ohm

• Diode forward voltage drop

• hFE for bipolar PNP and NPN transistors

Measurement Instructions and specifications:


AC voltage measurement

  • Connect the red lead to "VOmA" jack and the black test lead to the "COM" jack.
  • Turn the rotary switch at the desired V~ position.
  • Connect the test leads across the source or load being you want to measure and read the voltage value on the LCD display.

DC voltage measurement

  • Connect the red test lead to the "VOmA" jack and the black test lead to the "COM" jack.
  • Turn the rotary switch at the desired position. If the voltage to be measured is not known, set the range switch at the highest range position and then reduce it until a satisfactory resolution is obtained.
  • Connect the test leads across the source or load being measured. Read the voltage value and polarity on the LCD display.

DC current measurement

  • Connect the red test lead to the "VOmA" jack and the black lead to the "COM" jack. To measure current between 200mA and 10A, insert the red lead into the "10A" (unfused) jack.
  • Turn the rotary switch at desired position.
  • Open the circuit in which the current is to be measured, and connect test leads in series with the circuit.
  • Read the current value on the LCD display along with the polarity of red lead connection.

Resistance measurement

  • Connect the red test lead to "VOmA" jack and the black lead to "COM" jack. The polarity of red lead is positive "+" in this mode.
  • Turn the rotary switch at desired range position.
  • Connect the test leads across the resistance to be measured and read the LCD display.

Note: If the resistor being measured is connected to a circuit, turn off power and discharge all capacitors before applying measurements!

Transistor Test

Before attempting to insert transistors into the socket for testing, always be sure that test leads have been disconnected from any measurement circuits. Also, components should not be connected to the hFE socket when making voltage measurements with the test leads!

  • Set the rotary switch to the "hFE" position.
  • Determine whether the transistor under testing is NPN or PNP type and locate the emitter, base and collector leads.
  • Insert the leads into the proper holes of the hFE socket on the front panel.
  • The multimeter will show the approximate hFE value at the condition of base current 10µA and a Vce of 3V.

Diode test

  • Connect the red test lead to "VOmA" jack and the black lead to the "COM" jack. The polarity of red lead is positive "+".
  • Set the rotary switch at the diode test position.
  • Connect the red lead to the anode of the diode to be tested and the black lead to the cathode of the diode.
  • The forward voltage drop of the diode will be displayed in mV. If the connection is reversed, only figure "1" should be displayed for a good diode.
  • Battery and fuse replacement

If the sign "BAT" appears on the LCD display, it indicates that the battery is old and should be replaced. Loosen the screws on the back cover and open the case. Replace the old battery with a new one of the same type (9V 6F22 or NEDA 1604).

AC Voltage

Frequency range: 45 Hz to 450 Hz. Response: Average responding, calibrated in RMS of a sine wave. 

Range

Resolution

Accuracy

200V

100mV

±1.2% of rdg ± 10 digits

750V

1V

±1.2% of rdg ± 10 digits

 

DC voltage

Range

Resolution

Accuracy

200mV

0.1mV

±0.5% of rdg ± 2 digits

2000mV

1mV

±0.5% of rdg ± 2 digits

20V

10mV

±0.5% of rdg ± 2 digits

200V

100mV

±0.5% of rdg ± 2 digits

1000V

1V

±0.8% of rdg ± 2 digits

Input impedance: 1Mohm
Maximum input voltage: 1000V DC or 750V rms (200mV scale: 500V DC or 350V AC rms) Note: some models will have a maximum DC input voltage of only 600V with an overload protection of 250V RMS AC for the 200mV range and 600V DC or RMS AC for other ranges.

DC current

Overload protection: F250mA 250V fuse (10A range is unfused!).

Range

Resolution

Accuracy

200µA

0.1µA

±1.0% of rdg ± 2 digits

2000µA

1µA

±1.0% of rdg ± 2 digits

20mA

0.01mA

±1.0% of rdg ± 2 digits

200mA

0.1mA

±1.5% of rdg ± 2 digits

10A

10mA

±3.0% of rdg ± 2 digits

Resistance

Maximum open circuit voltage: 3.2V
Overload protection: 250V rms. AC on all ranges.

Range

Resolution

Accuracy

200

0.1

±0.8% of rdg ± 3 digits

2000

1

±0.8% of rdg ± 2 digits

20K

10

±0.8% of rdg ± 2 digits

200K

100

±0.8% of rdg ± 2 digits

2000K

1K

±1.0% of rdg ± 2 digits

Other specs

Diode aprox. testing voltage is 2.8V with a current of 1mA. The overload protection in the diode test mode is 250V RMS. AC.
Over range indication: figure "1" on the display.
Size: 125 × 70 × 25 mm
Weight: 170g

 

$ 6.99

Quantity :

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