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Fieldpiece Digital Megohm Meter - SMG5

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Fieldpiece Digital Megohm Meter - SMG5
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Fieldpiece Digital Megohm Meter - SMG5

Fieldpiece Digital Megohm Meter - SMG5


SMG5 Digital Megohm Meter by Fieldpiece

The Fieldpiece Digital Megohm Meter, model SMG5, is a compact standalone meter designed for checking HVAC compressor insulation. The SMG5 provides a 1000V voltage source, monitors current, and displays the resistance between the test points. Maximum current output is <1mA. It can be used to determine the condition of insulation from winding to ground in a motor, compressor, or transformer. Includes a case, alligator clip lead tip and leads with removable tips.

To test resistance, a DMM supplies low voltage (<1V) to the test points and is capable of delivering only a few milliamps. It's not a high enough voltage to detect high resistance problems that might indicate moisture and other contaminants and it's not enough current to measure lower values of resistance.

  • Predict compressor failure
  • 1000VDC stresses insulation to measure up to 2000Mohms
  • Backlit LCD display
  • Auto-off to extend battery life
  • Case, alligator clip, leads with removable tips


  • Megohm Meter SMG5
  • (2) Probe Tips
  • (1) Ground Lead with Detachable Tip
  • (1) Alligator Probe Tip
  • Carrying Case
  • (4) AAA Batteries (installed)
  • Operator's Manual
General Specification
Display 3 1/2 digit liquid crystal display (LCD) with maximum reading of 1999.
Overrange (OL) or (-OL) is displayed.
Measurement rate 2.5 times per second, nominal.
Operating Environment 0°C to 40°C at < 70% relative humidity.
Storage Temperature -20°C to 60°C, 0 to 80% R.H. with battery removed from meter.
Auto power off 15 seconds approx.
Standby consume current <10μA
Battery 4 pcs 1.5V (AAA size) UM-4 R03.
Battery Life 4 hours (continuity) typical with alkaline battery (@ 20ΜΩ range test 10ΜΩ resistor).
Dimensions 170mm(H) x 44mm(W) x 40mm(D).
Weight 160g including batteries
Range 20ΜΩ,2000ΜΩ
Resolution 10KΩ on 20ΜΩ range.
1ΜΩ on 2000ΜΩ range.
Accuracy 20ΜΩ range: ±(2%rdg + 2dgts)
2000ΜΩ range: <500ΜΩ ±(4%rdg + 2dgts)
>500ΜΩ ±(5%rdg + 2dgts)
Rated voltage DC-DC converter to 1000VDC
Accuracy temperature 23°C ± 5°C less than 70%RH
Temperature Coefficient 0.1X (specified accuracy)/°C (<18°C or >28°C)

Datasheets & User Manuals

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