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Martindale MM39 Standard Digital Multimeter - Auto Ranging

SKU
MARMM39
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£33.00 £27.50
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The Martindale MM39 is an autoranging, portable multimeter that can be used to carry out DC voltage, AC voltage, AC current, DC current, resistance, diode and continuity testing procedures.

When measuring voltages, the MM39 features measurement range of 0.1mV to 600V on both AC/DC, with five ranges available. When measuring current, the device features range of 0.01A to 10A, and when measuring resistance the MM39 has measurement range of 0.1 to 20MΩ. It also features a continuity buzzer which will sound at less than 25Ω.

Using the MM39 is straightforward. The device features a rotary dial for quick selection between different available parameters, and it also has a button for changing the range, and a button for holding the data currently displayed on screen. Above this there's also a 3.5 inch LCD screen which relays testing results.

Martindale MM39 Standard Digital Multimeter Key Features

  • Low cost DMM
  • Multiple testing procedures
  • Varied measurement range
  • Large rotary dial made for comfort even when wearing gloves
  • Audible indication when carrying out continuity testing
  • 3.5inch LCD screen
  • Data hold function
  • Auto polarity and zero

Full List of Products Included

  • Martindale MM39 Standard Digital Multimeter
  • TL16 Test Leads
  • 2 x 1.5V Batteries
  • Instruction Manual
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Part CodeMARMM39

Technical Specifications

Display 3.5 inch digit liquid crystal display (LCD) with max reading of 1999
Polarity Automatic, positive implied, negative polarity indication
Overrange (OL) or (-OL) is displayed
Zero Automatic
Low battery Symbol displayed when below certain level
Measurement Rate 2 times per second, nominal
Auto Power Off Approx. 10 mins
Operating Environment 0 to 50°C at <70% relative humidity
Storage Temperature -20 to 60°C at <80% relative humidity
Accuracy Stated accuracy at 23°C ±5°C, <75% relative humidity
Temperature Coefficient 0.1 x (specified accuracy) per °C (0 to 18°C, 28-50°C)
Altitude 6561.7 feet (2000m)
Power 1.5V batteries x 2, RO3/Size AAA
Battery Life 200 hours typical with carbon-zinc
Dimensions 145mm (H) x 70mm (W) x 34mm (D)
Weight Approx 11.1oz (315g) including holster
DC Volts  
DC Voltage Range 200mV, 2V, 20V, 200V, 600V
DC Resolution 0.1mV
Accuracy ±(1.0% rdg + 2 dgts)
Input Impedance 200mV: >100MΩ: 2V: 10MΩ, 20V-600V: 9.1MΩ
Overload Protection 600VDC or AC RMS
AC Volts (50Hz-500Hz)  
Ranges 200mV, 2V, 20V, 200V, 600V
Resolution 0.1mV
Accuracy ±(2.0% rdg + 5dgts) 50Hz-100Hz on 200mV range, ±(2.0% rdg + 5 dgts)
Input Impedance 200mV: >100MΩ: 2V: 10MΩ, 20V-600V: 9.1MΩ
Overload Protection 600V DC or AC rms
Current  
Ranges 10A
Resolution 0.01A
DC Accuracy ±)3.0% rdg + 3 dgts)
AC Accuracy (50Hz-500Hz) ± (3.5% rdg + 5 dgts)
Voltage Burden 0.2V
Input Protection 10A/500V fast blow ceramic fuse
Resistance  
Ranges 200Ω, 2kΩ, 20kΩ, 200kΩ, 2MΩ, 20MΩ
Resolution 0.1Ω
Accuracy ±(1.5% rdg + 4 dgts) on 200Ω to 200kΩ ranges
±(2.5% rdg +4 dgts) on 2MΩ range
±(5.0% rdg + 5 dgts) on 20MΩ range
Open Circuit Volts -0.45Vdc (-1.2Vdc on 200Ω range)
Overload Protection 500V DC or AC rms
Diode Test  
Test Current 1.0mA (approximate)
Accuracy ±(3.0% rdg + 3 dgts)
Resolution 10mV
Audible Indication <0.25V
Open Circuit Volts 3.0Vdc typical
Overload Protection 500V DC or AC rms
Continuity  
Audible Indication Less than 25Ω
Response Time 500ms
Overload Protection 500V DC or AC rms
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