Description
| Range (Auto-ranging) | 0 to 2000Ω |
| Resolution | 0.01 to 1Ω |
| Test Current | 0.1 to 10mA |
| Accuracy Typical | ±(2% Reading +1ct) |
| Open Voltage | 42V peak |
| Withstanding Voltage | 250VAC or 100VDC |
| Operating Frequency | 128Hz square wave |
| Interference | Rejection to high levels of interference voltage (DC, 50/60Hz, harmonics) |
| Maximum Auxiliary Rod Resistance | Current Circuit: 3kΩ @ 20Ω range 30kΩ @ 200Ω range 50kΩ @ 2000Ω range |
| Voltage Circuit: 50kΩ on all ranges | |
| Response Time | 4 to 8 seconds for a stabilized measurement |
| Display | 200 counts, 7 segment LCD, backlight |
| Power Source | 9.6V NiMH rechargeable battery pack; 120/230V 50/60Hz |
| Battery Life | 4500 15-seconds tests, low battery indicator |
| Dimensions | 10.8 x 9.7 x 5.0” (273 x 247 x 127mm) |
| Weight (with Battery) | 7.38 lbs (3.35kg) |
| Operating Temperature | 14° to 131°F (-10° to 55°C) |
| Storage Temperature | -40° to 158°F (-40° to 70°C) |
| Relative Humidity | Up to 90>#/td### |
| Ingress Protection (IP) | IP 65 (closed); IP 63 (open) |
| EMC | EN 61326-1 |
| Safety Compliance | EN 61557, EN 61010-1, 30V CAT III, Pollution Degree 2 |
User Manuals
Models 4620 and 4630 - English
Models 4620 and 4630 Multi-lingual (CA France version)
Ground Resistance Calibration Checker
Datasheets
Brochures
Ground Resistance Testers Brochure
Comparison Charts
Ground Tester Comparison Chart - English
Tabla de Selección de Medidores de Tierra - Spanish
Application Notes
Battery Recharge Time / Rechargeable NiMH Notice
Tiempo de recarga de las baterías / Aviso de NiMH recargable
App-Touch-Step-Potential_Spanish
Megohmmeter Calibration Checker and Ground Resistance Checker
Workbooks
Understanding Ground Resistance - English
Understanding Ground Resistance - Spanish
Forms
Fall-of-Potential Report - PDF
Fall-of-Potential Report - Excel
Soil Resistivity Made Easy - PDF
Ground Testing Nomograph - PDF
Ground Testing Nomograph Example
Soil Resitivity Report - Excel
Single Rod Ground Resistance Calculation - Excel
Grounding Calculations and Charts - Excel
Calculators
Grounding Electrode Resistance Calculator
Technical Bulletins
Buy Test Equipment, Get Free Calibration
Free calibration on Test Equipment
Get free in-house calibration when you buy select test equipment from Byram labs.
Offer valid through 12/31/2021