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Type
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Portable transformer winding resistance meter
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Physical specifications
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21”W x 17”H x 9” D (53 cm x 43 cm x 24 cm); Weight: 35 lbs (15.8 kg)
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Operating voltage
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100 - 240 Vac, 50/60 Hz
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Resistance reading range
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ATRM-20: 1 micro-ohm - 2000 ohms; ATRM-40: 1 micro-ohm - 500 ohms
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Accuracy
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1 - 19,999 micro-ohms: ±0.5% reading, ±1 count;
20 - 999 milli-ohms: ±1% reading, ±1 count;
1- 2000 ohms: ±1.5% reading, ±1 count
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Test current
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ATRM-20: 1A ¬ 20A in 1A increments; ATRM-40: 1A ¬ 40A in 1A increments
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Test voltage
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60Vdc charging, 18V DC max during measurement
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Resistance channels
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4 input channels for measuring resistance
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Display
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Back-lit LCD screen (128 x 64 pixels); viewable in bright sunlight and low light conditions
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Printer
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Built-in 2.5-inch wide thermal printer
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Internal data storage
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256 static test records (each can contain up to 111 readings) and 120 dynamic test records
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External data storage
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Up to 999 test records on external USB Flash drive
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Computer interface
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RS-232C, USB, and Bluetooth
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Safety
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Designed to meet UL 61010A-1 and CAN/CSA C22.2 No. 1010.1-92 standards
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Environment
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Operating: -10°C to +50°C (+15°F to +122°F); Storage: -30°C to +70°C (-22°F to +158°F)
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Humidity
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90% RH @ 40°C (104°F) non-condensing
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Altitude
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2,000 m (6,562 ft) to full safety specifications
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Cables
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Four 50-foot test cables, one LTC control cable, one ground cable, one power cord, one USB cable
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Optional accessories
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Transportation case
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Warranty
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1 year on parts and labor
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