Amprobe AC71B Clamp Meter

Versatile clamp meter automatically senses what type of measurement is being made.

Features

  • AutoTect Function - automatically selects AC volts, DC volts or resistance depending upon measurement point
  • Bright blue backlight turns on when dark environment is sensed
  • Easy one-button control
  • AC current to 600 A
  • AC volts to 750 V
  • DC volts to 1000 V
  • Resistance and continuity beeper
  • Data Hold
  • Conductor size 1.25", 32 mm, 750 MCM

The Amprobe AC71B automatic AC clamp multimeter is a digital clamp multimeter with two unique features: Autotect and automatic backlight. The AutoTect feature automatically senses what type of measurement is being made when the test leads are placed across a measurement point. There is no knob to turn. The meter knows what is being measured and the digital display shows the measured value along with the associated unit icon.

Amprobe AC71B automatic AC clamp multimeters are complete multimeters measuring AC and DC volts, resistance and continuity in addition to the AC current. A useful tool for the electrician, plant maintenance, HVAC or field service technician.

The Amprobe AC71B's AutoTect feature also utilizes a lower input impedance. This helps determine if voltage is from leakage (called ghost voltages) or a hard connection. Any ghost voltages will be zeroed out by the lower input impedance.

The automatic backlight has a sensor that recognizes when the ambient light becomes dim and turns itself on. A bright blue backlight is then available to easily read the measurement value on the digital display.

The Amprobe AC71B automatic AC clamp multimeter ships complete with:

  • Test leads
  • Carrying case
  • Manual

Amprobe AC71B Automatic AC Clamp Multimeter Specifications

Feature Range Accuracy
Electrical specifications ± (% reading + number of digits) at 23°C ±5°C at less than 80 % R.H.
Temperature coefficient: add 0.2 x (specified accuracy)/°C, less than 18°C, greater than 28°C
Voltage
Voltage AC (50 to 500 Hz) 1.3 V to 750.0 V ±(1.5% + 3 dgt)
Voltage DC 1.8 V to 1000.0 V ±(1% + 2 dgt)
  -0.6 V to -1000.0 V ±(1% + 4 dgt)
Overvoltage 1000 V DC/750 V AC  
Input Impedance 4 kΩ for input voltage up to 30 V. Impedance increases with input voltage to approximate 300 kΩ at 1000 V/277 kΩ at 750 V AC
Resistance
Resistance 0.0 Ω to 99.9 Ω ±(2% + 1 Ω)
Continuity 100.0 Ω to 2000 Ω ±(2% + 2 d)
Overload protection 1000 V DC/750 V RMS
Maximum open circuit voltage 1.5 V
Continuity check
Internal sounds activate if the resistance of the circuit under test is less than 25 Ω. It will then turn off if the resistance is increased beyond 150 Ω. Temperature coefficient multiply by 1.5 when operating temperature is 40°C to 50°C.
AC Current
AC Current (50 to 60 Hz) 0.0 to 60.0 A ±(1.9% + 2 A)
  60.0 to 400.0 A ±(1.9% + 5 A)
  401 to 500.0 A ±(2.5% + 7 A)
  501 to 600.0 A* ±(3% + 10 A)
Overload protection 0 to 500 A: continuous operation
*501 A to 600 A: 10 minutes maximum followed by 10 minute cooling period