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Metrel MI 3123 SMARTEC Earth / Clamp Tester

Metrel MI 3123 SMARTEC Earth / Clamp Tester

Brand
Metrel
Model number
MI 3123

Handheld earth tester: 4-wire, one-clamp and two-clamp earth resistance, specific earth resistance (Wenner) and TRMS clamp current; automatic probe resistance and noise checks, 125 Hz test signal.

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Key features

  • Earth resistance, 4-wire method
  • Earth resistance, 4-wire method with one current clamp (option)
  • Earth resistance, two clamps method (option)
  • Specific earth resistance
  • TRMS current (option)
  • Earth resistance measurement: instrument performs standard 4-wire earth resistance tests with two earthing rods and specific earth resistance measurement
  • Selective earth resistance test: optional 4-wire earth resistance measurement in combination with an additional current clamp is used for measuring earth resistance of individual earthing rods
  • Contactless earth resistance test: earth resistance measurement with 2 current clamps without breaking the loop is intended for measuring resistance of individual earthing rods and is recommended first of all for urban areas
  • Downloadable: downloads via RS232 or USB cable directly to the PC with the help of the optional software
  • Upgradeable: if changes occur to the regulations upgrades can be made to the firmware to keep the instrument up to date
  • Help screens: instrument comes complete with built-in help screens for referencing on site
  • Built-in charger & rechargeable batteries: instrument has a built-in charging circuit and comes complete with a set of rechargeable NiMH batteries
  • Custom limits: the limits can be set on any function, in that case large green and red lights of the LEDs will indicate a PASS or FAIL evaluation of test result
  • Easy to use: large bright LCD display and large buttons enable easy handling of the instrument (even while wearing gloves)
  • Magnetic holder: magnet for fixing instrument on metal surfaces enables hands-free operation

Specifications

Earth resistance
4-wire and one clamp method0.00 ... 9999 Ω; ±⁠(3 % of reading + 3 digits) up to 199.9 Ω
Two clamps method0.00 ... 39.9 Ω; ±⁠(10 % of reading + 10 digits) up to 19.9 Ω
Test signal40 VAC open terminal, 125 Hz, short-circuit current < 20 mA
Specific earth resistance0.0 ... >100k Ωm, calculated (Wenner method)
Automatic testsProbe resistance, voltage noise, low clamp current and noise current indication
Current
TRMS clamp current0.0 mA ... 19.99 A; ±⁠(3 % of reading + 3 digits); 40 Hz ... 500 Hz
General
Overvoltage category50 V CAT IV
Operationtypical 20 h
Power supply6 x 1.5 V batteries or rechargeable batteries, size AA
Protection degreeIP 40
Display128 x 64 dots matrix display with backlight
Memory1900 measurements
Communication115200 baud (RS 232) / 256000 baud (USB)
Dimensions (w x h x d)14 cm x 8 cm x 23 cm
Supplied with
MI 3123 Standard setInstrument Smartec Earth / Clamp; Soft hand strap; Test lead, 4.5 m (blue); Test lead, 4.5 m (red); Test lead, 20 m (green); Test lead, 20 m (black); Earth test rod, 4 pcs; Power supply adapter + 6 NiMH rechargeable batteries, type AA; Calibration certificate; Short instruction manual; Instruction manual

Specifications are from the manufacturer's published information. Confirm critical values with us or the datasheet before ordering.

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