BK Precision® Manual-Ranging Digital Earth Resistance Meter

A Complete, Cost-Effective Kit for Testing Structural Grounding

We Guarantee to Have the Best Price

What's special about this grounding tester?

  • Measures the resistance of any existing earth conductor to help determine its suitability for grounding, ensuring that standards for electrical installations are met
  • Ideal for electrical workers needing to certify or re-certify for industry electrical codes for new construction, existing construction upgrades and maintenance, and post-lightning strike evaluation
  • Displays 0.1Ω to 1Ω resolution results on an easy to read LCD display for higher accuracy and readability than needle-driven analog instruments
  • Meeting structural electrical code standards greatly reduces the risk of personnel injury, power surges, and fire, increasing the overall safety of all occupants and equipment
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Every professional electrical worker knows the importance of proper grounding for electrical safety, and the equal importance of having the right tool for the job. The Model 309 Digital Earth Resistance Meter from BK Precision® is an accurate, affordable instrument for ensuring proper grounding, and comes with everything you need to get to work right out of the box.

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Part #DescriptionMeasurement RangeWeightPrice
BK-309Model 309 Digital Earth Resistance Meter
Includes: meter, earth spikes [2], test leads, carry case, batteries
0 to 2,000 Ohms14.5 oz [410g]
  • Very high 2000 ohm resistance testing limit accommodates virtually any application without overloading
  • Measures current resistance without tripping circuit breakers, minimizing downtime during recertification and other electrical testing
  • Data hold function freezes the current test results on the screen for easier record keeping
  • Automatically turns off output after a 3 to 5 minute continuous test to conserve battery power
  • Small, lightweight, battery-powered design is much easier to manage than the large, bulky meters of the past
  • Includes test leads, batteries, earth spikes, and carrying case, so there is no need to buy anything else to get started
  • IEC 1010 / CAT III 200V / CE Rated


Part # BK-309
Measurement System Earth resistance by constant
Current inverter. 820Hz, 2mA
Earth Voltage 0 to 200VAC 40 to 500Hz
Earth Resistance Range/Resolution 0 to 20 ohm: 0.01 ohm
  0 to 200 ohm: 0.1W)
  0 to 2000 ohm: 1W)
Accuracy Earth voltage: ± (1%rdg+2dgt)
  Earth resistance: ± (2%rdg+2dgt) or ± 0.1W, whichever is greater
Safety standard IEC 1010-1 (EN61010-1)
  CAT III 200V
Power source 6 AA batteries
Altitude Rating 6561' (2000m)
Relative Humidity 80%
Operating Temperature 32°F to 104°F (0°C to 40°C)
Pollution Degree 2
Dimensions (LxWxD) 6.42" x 3.94" x 1.97"
  163 mm 100 mm x 50 mm
Weight 14.5 oz (410g)







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