Fieldpiece SMG5 Digital Megohm Meter

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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

What’s Included

• Megohm Meter SMG5
• (2) Probe Tips
• (1) Ground Lead with Detachable Tip
• (1) Alligator Probe Tip
• Carrying Case
• (4) AAA Batteries (installed)
• Operators Manual

SMG5 User Manual