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R1M Series


Portable Megohmmeter

Advanced Energy's R1M Series of megohmmeters are designed to measure high values of resistance associated with insulation resistance. With six resistance ranges (1 MΩ full scale to 200 GΩ full scale), the megohmmeters offer four test voltages of 50, 100, 250, and 500 volts DC. The resistance readings are displayed on a 3-1/2 digit LCD.


  • Megohmmeter measures up to 200 GΩ in 6 Selectable Ranges
  • Measurement Accuracy ± 5%
  • 50, 100, 250, 500 V Test Voltages
  • 3½ Digit Display


  • Rugged Weather Tight Case
  • Use Versatile Test Probes
  • Front panel LED to indicate the presence of voltage
  • NSN: 6625-01-344-9273
  • 3 year warranty
  • Made in USA


Basic Accuracy: ±5%
Connector Type: Banana
Datalogging: No
Intrinsically Safe: No
Max. Resolution: 1 kΩ
Measurement Range: 1 MΩ to 200 GΩ
Operating Temperature (°C): 0 to 50 ⁰C

Stock Check

Model Number
Connector Type Max. Resolution Measurement Range Operating Temp Buy
R1M-A Active, Contact Us
Megohmmeter, Portable 1 MΩ to 200 GΩ, 3%, 500V, 3.5 Digit (no CE)
Banana 1 µΩ 1 MΩ to 200 GΩ 0 to 50 ⁰C Buy
R1M-B Active, Contact Us
Megohmmeter, Handheld, 1MΩ to 200MΩ, 3%, 500V, 3.5 Digit; no CE
Banana 1 µΩ 1 MΩ to 200 GΩ 0 to 50 ⁰C Buy

Technical Documentation


Calibration and Alignment

Advanced Energy has the tools and processes to ensure your equipment continues to meet its original specifications.  Our products are calibrated at global AE service sites with proprietary technology designed to exceed industry standards​.

Agreement Term Options


Our worldwide service centers provide fast cycle times, use only AE-qualified parts, and follow the original product's specifications and test procedures for the highest quality repair or calibration.

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