NOTE: Our complete catalog is not available for direct online purchase, refer to the Status Column for purchasing options. Items that do not have an Add to Cart button must be purchased from an Authorized Distributor.
| Model | Cat. # | Description | List Price | Quantity/Status | Distributor Stock Check |
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| 3640 | 2114.92 | Ground Resistance Tester Model 3640 - (Discontinued replaced by Cat.#2135.57) | $0.00 | Discontinued |
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| 3640 Kit-150ft | 2135.13 | Ground Resistance Tester Model 3640 Kit-150ft - (Discontinued replaced by Cat.#2135.58) | $0.00 | Discontinued |
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| 3640 Kit-300ft | 2135.14 | Ground Resistance Tester Model 3640 Kit-300ft - (Discontinued replaced by Cat.#2135.59) | $0.00 | Discontinued |
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| Range (Auto-ranging) | 0 to 2000Ω |
| Resolution | 0.01 to 1Ω |
| Test Current | 0.1 to 10mA |
| Accuracy Typical | ±(2% R +1ct) |
| Open Voltage | 42V peak |
| 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 |
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| Response Time | 6 seconds for a stabilized measurement |
| Display | 200 counts, 7 segment LCD |
| Power Source | 8 x 1.5V AA alkaline batteries |
| Battery Life | 1800 15-seconds tests |
| 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% |
| Dimensions | 8.7 x 5.4 x 5.9” (220 x 136 x 150mm) |
| Weight (with Battery) | 2.9 lbs (1.3kg) |
| Case | UL 94 material |
| Ingress Protection (IP) | IP 50 |
| EMC | EN 61326-1 |
| Safety Compliance | EN 61010-1, 42V CAT III, Pollution Degree 2 |
User Manuals
Datasheets
Brochures
Comparison Charts
Application Notes
Choosing a Ground Tester
Fall of Potential Testing with the Model 3640
Megohmmeter Calibration Checker and Ground Resistance Checker
Workbooks
Calculators
Technical Bulletins
Videos
3640 Fall Of Potential Testing - How-To
Choosing the Right Ground Resistance Tester
Understanding Ground Resistance Testing
| Model | Cat. # | Description | List Price | Quantity/Status | Distributor Stock Check |
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2119.82 | Multi-purpose Large Canvas Bag Dimensions: (22 x 10.5 x 12) in |
$172.00 |
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2126.71 | Case - Replacement Carrying Case for Models 3620, 3640, 4600, 4610, AN1, 1210,1250, 6501 & 6503, 6422 & 6424 (Meter only) Dimensions: (10.5 x 6.5 x 6) in |
$38.90 |
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2130.59 | 25Ω Calibration Checker for Ground Testers Model 3620, 3640, 4610, 4620 and 4630. | $99.00 |
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2130.60 | 100 ft Tape Measure for use with Ground Resistance Tester Kits | $48.00 |
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2135.35 | Ground Resistance Test Kit for 3-Point Testing - 150ft Test Kit for 3-Point Testing, Kit (Carrying Bag, [2] 150 ft Color-coded Leads on Spools (Red/Blue), [1] 30 ft Lead (Green), [2] 5 ft Color-coded Leads (Red/Blue), [2] 14.5" T-shaped Auxiliary Ground Electrodes, [1] Set of 5, Spaded Lugs and [1] 100 ft AEMC® Tape Measure) | $625.00 |
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2135.36 | Ground Resistance Test Kit for 4-Point Testing - 300ft Test Kit for 4-Point Testing, Kit (Carrying Bag, [2] 300 ft Color-coded Leads on Spools (Red/Blue), [2] 100 ft Color-coded Leads (hand tied-Green/Black), [2] 5 ft Color-coded Leads (Red/Blue), [4] 14.5" T-shaped Auxiliary Ground Electrodes, [1] Set of 5, Spaded Lugs and [1] 100 ft AEMC® Tape Measure) | $800.00 |
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2135.37 | Ground Resistance Test Kit for 4-Point Testing - 500ft Test Kit for 4-Point Testing, Kit (Carrying Bag, [2] 500 ft Color-coded Leads on Spools (Red/Blue), [2] 100 ft Color-coded Leads (hand tied-Green/Black), [1] 30 ft Lead (Green), [2] 5 ft Color-coded Leads (Red/Blue), [4] 14.5" T-shaped Auxiliary Ground Electrodes, [1] Set of 5, Spaded Lugs and [1] 100 ft AEMC® Tape Measure) | $920.00 |
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2135.38 | Test Kit for 3-Point testing (supplemental for 4-Point testing) - includes two 100 ft color-coded leads (hand tied - green and black), one 30 ft lead (green) and two 14.5" T-shaped auxiliary ground electrodes and carrying bag. | $300.00 |
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2135.39 | Set of 2, 14.5" T-shaped Ground Rods for use with all Ground Testers (except clamp-ons) | $50.00 |
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2135.85 | Set of 2 reel caddies for use with ground kit spools | $132.50 |
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2970.12 | Fuse - Set of 5, 0.1 A, 250 V (fast blow), (6 x 32) mm (0.25 x 1.25) in Models 36620, 3640, 4600, 4610, 4620, & 4630 | $17.50 |
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5000.01 | Green replacement wire (30 ft hand-tied) for ground resistance tester kits | $34.00 |
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5000.02 | Red replacement wire (500 ft) on reel for ground resistance tester kits (models 4620, 4630, 6470-B, 6471 & 6472) | $233.50 |
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5000.03 | Red replacement wire (300 ft) on reel for ground resistance tester kits (models 4620, 4630, 6470-B, 6471 & 6472) | $199.00 |
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5000.04 | Red replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) | $157.00 |
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5000.05 | Blue replacement wire (500 ft) on reel for ground resistance tester kits (models 4620, 4630, 6470-B, 6471 & 6472) | $233.50 |
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5000.06 | Blue replacement wire (300 ft) on reel for ground resistance tester kits (models 4620, 4630, 6470-B, 6471 & 6472) | $199.00 |
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5000.07 | Blue replacement wire (150 ft) on reel for ground resistance tester kits (models 3620, 3640, 4620, 4630, 6422 & 6424) | $157.00 |
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5000.10 | Set of 5, replacement screw-on spaded lugs for ground resistance tester kits | $20.50 |
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5000.34 | Lead - Set of (2), 5 ft Color-coded (Red/Blue) leads for use with AEMC Ground Tester Reels incorporating banana jack input. | $25.75 |
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5000.74 | Ground resistance calibration checker - 5/25Ω for use with Models 6470/6470-B, 6471, and 6472 |
$209.00 |
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