Auto-Ohm 10

Low Resistance Micro-Ohmmeter

The Vanguard Auto-Ohm 10 is a 10-ampere battery powered micro-ohmmeter designed for low-resistance-measuring applications such as the measurement of resistance in circuit breaker contacts, bushing contact joints, and welding joints. The unit is powered by four 3400mAh, 3.7Vdc Li-Ion rechargeable batteries. With these high capacity batteries, up to 2,900 tests per charge (10A/2 second duration) can be performed in the field. The Auto-Ohm 10 features a built-in charger that can charge the batteries when the unit is not in use.
The Auto-Ohm 10 features a rotary knob that is used to select either the “Contact Resistance” or “Transformer Resistance” test mode. The unit’s backlit LCD screen (128 x 64 pixels) is viewable in both direct sunlight and low light level. Resistance readings are displayed on the LCD screen in micro-ohms, milliohms, or ohms.

  • High capacity Li-Ion batteries (perform up to 2,900 tests per charge (@ 10A/2 sec)
  • Built-in charger and line-power for continuous operation
  • Transformer winding resistance test mode
  • Contact resistance test mode
  • Protected to 600V
  • Lightweight (7.8 lbs. / 3.54 Kg)
PHYSICAL SPECIFICATIONS Dimensions: 14”W x 8”H x 12” D (36 cm x 19.4 cm x 30.4 cm) Weight: 7.8 lbs. (3.54 Kg)
INPUT POWER 100 – 240 Vac, 50/60 Hz
BATTERIES Rechargeable Li-Ion, 3.7Vdc, 3400 mAh, protected (Qty=4) Charge time: 4 hours
AUTO POWER DOWN Programmable: 30 sec, 1 min, 3 min
DISPLAYBacklit LCD screen (128 x 64 pixels); viewable in bright sunlight and low-light
TEMPERATUREOperating: -10°C to +50°C (+15°F to +122°F) Storage: -30°C to +70°C (-22°F to +158°F)
HUMIDITY90% RH @ 40°C (104°F) non-condensing
ALTITUDE2,000 m (6,562 ft) to full safety specifications
SAFETYDesigned to meet IEC 61010 (1995), UL 61010-a, and CSA-C22.2 standards
CABLES15 ft (4.57 m) cable set with alligator clamps, power cable, cable bag
OPTIONS30 ft (9.14 m) cable set, 10 ft (3m) hand probe (5A), 10 ft (3m) hand probe (10A), pistol grip probe (10A), shipping case
WARRANTYOne year on parts and labor
Auto-Ohm 10 Datasheet (English)
Auto-Ohm 10 User's Manual (English)