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True-RMS 53,000-Count Bench Digital Multimeter

Item no. CSIMS8050

True-RMS 53,000-Count Bench Digital Multimeter

Item no. CSIMS8050
3 In stock

True-RMS 53,000-Count Bench Digital Multimeter

The CSIMS8050 is a 53,000 count bench Digital Multimeter (DMM) that has high accuracy and high stability. It contains a 24 bit A/D converter that is controlled by a single-chip computer that can operate for several ten measurement functions. It will not only read DC, AC RMS, but DC and AC mixture signals. True RMS can be measured for 1000V or 10A while the resolution of DCV is 1µV and the frequency band of voltage or current is about 20kHz, which is sufficient for most electrical measurements.

The CSIMS8050 is also a frequency counter which can test pulse frequency above 2MHz or linear frequency above 200kHz, including the frequency of current. The measurements of a 50Mohm resister, 5000µF capacitor and maximum/minimum value, average value, relative value, power DB, diode, continuity are also included and useful for engineers. It has a memory function up to 30 full screens for saving test data, and a color fluorescent double digit display screen. The meter has a light-coupling RS-232C interface and software that can display, draw and record all test processes on your computer. The software has an exclusive dynamic scale which can describe very small changes of electric parameters.


  • ACV and DCV measurements up to 1000V
  • DC measurement accuracy 0.03%
  • 0.01ohm resistance and 1µV voltage resolution
  • Capacitance measurement up to 5000µF
  • Color VFD display screen/ double functions display
  • Data storage function
  • Max/Min/Relative/Avg/dBm measurement
  • RS-232C infrared interface
  • Display, record and graphics software for computer
  • Overload protection
  • Sound alarm for wrong current measurement 


  • ACV/DCV+ACV: 50mV/500mV/5V/50V/500V/1000V ±0.5%
  • DCV: 50mV/500mV/5V/50V/500V/1000V ±0.03%
  • AC Current/DC Current+AC Current: 500µA/5000µA/50mA/500mA/5A ±0.75%, 10A ±1.5%
  • DC Current: 500µA/5000µA/50mA/500mA/5A/10A ±0.15%
  • Resistance: 500ohm/5Kohm/50Kohm/500Kohm/5Mohm±0.1%, 50Mohm±0.5%
  • Capacitance: 50nF/500nF/5µF±1%, 500µF/5000µF±2%
  • Diode: 2.5V±1%
  • Duty Cycle: 5Hz - 500kHz, Range: 10% - 90%
  • Logic Frequency: 5Hz - 2MHz±0.006%, Vpp 2 - 5V Square Wave
  • Linear Frequency: 10Hz - 200KHz±0.006%, Sensitivity: lowest 4mV
  • Memory function: 30 full screen
  • Display: VFD Size 140mm x 40mm
  • Power: 110V±10% or 220V±10%
  • Size: 350mm x 250mm x 100mm 

Users Manual 

Driver Software

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Your satisfaction is important to us. If you're not satisfied, return the product within 30 days of purchase for a refund or credit.

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Circuit Specialists offers free technical support for the life of your product. Please call our technical team with any questions.

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Some products must be specially ordered, usually resulting in a 1–2 business day delay. Please contact us for an estimated delivery date.