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  • AU-92

Overview

Features

  • Measures:
  • DC/AC voltage, DC/AC current, resistance, diodes, capacitance, frequency and temperature
  • Tests engine RPM and dwell
  • Data hold button
  • Locate faulty wiring and components
  • Compact size
  • Protective holster with magnetic hanging strap
  • CAT III-600 Volts AC & DC rating

Description

The Amprobe AU92 automotive multimeter is a full-featured multimeter that offers additional measurements specific to automotive servicing. Ideal for locating faulty wiring and components, the AU92 has all standard multimeter functions such as voltage, current, resistance and continuity. The meter includes a built-in thermometer to measure air, surface or immersion temperatures and also tests engine RPM and dwell. An Inductive Pickup tool allows for accurate RPM measurements for 2 and 4-stroke automotive engines.

The Amprobe AU92 automotive multimeters are rugged and lightweight making them ideal for use either in the shop or in the field. A magnetic hanging strap keeps the meter handy. Results are clearly shown on the 3-3/4-digit LCD. The meter also includes a data hold function, auto zero, low battery indication and auto power off. The Amprobe AU92 automotive multimeter has a CAT III-600 Volts AC & DC rating.

Amprobe AU92 automotive multimeters ship complete with:

  • Inductive pick-up probe
  • Carrying case
  • Test leads
  • Test lead extender tips
  • Alligator clips
  • Type-K temperature probe
  • Fuse

Amprobe AU-92 Automotive Multimeter Specifications

Function Range Accuracy
DC Volts
  400 mV, 4 V, 40 V, 400 V, 600 V ± (1.0% rdg + 2 dgts)
Resolution 0.1 mV
Input impedance 400 mV: greater than 100 mΩ; 4 V:10 MΩ; 40 V to 600 V: 9.1 MΩ
Overload protection 600 VDC or AC rms
AC Volts
  400 mV, 4 V, 40 V, 400 V, 600 V  
  400 mV (50 to 100 Hz) ± (2.0% rdg + 5 dgts)
  4, 40, 400, 600 V (50 to 100 Hz) ± (2.0% rdg + 5 dgts)
Resolution 0.1 mV
Input impedance 400 mV: greater than 100 mΩ; 4 V:10 MΩ; 40 V to 600 V: 9.1 MΩ
Overload protection 600 VDC or AC rms
DC Current
  400 µA, 4000 µA, 40 mA, 400 mA, 10 A  
  400 µA to 400 mA ranges ± (2.0% rdg + 2 dgts)
  10 A range ± (3.0% rdg + 3 dgts)
10 A input: 10 A for 60 sec. max. followed by a 10 min. cooling period
Resolution 0.1 µA
Voltage burden 0.2 V on 400 uA, 40 mA ranges
  2V on 4000 uA, 400 mA ranges  
Input protection 0.5 A/500 V fast blow ceramic fuse (FP520)
  10 A/500 V fast blow ceramic fuse (FP540)  
AC Current
  400 µA, 4000 µA, 40 mA, 400 mA, 10 A  
  400 µA to 400 mA ranges ± (2.5% rdg + 5 dgts)
  10 A range ± (3.5% rdg + 5 dgts)
10 A input: 10 A for 60 sec. max. followed by a 10 min. cooling period
Voltage burden: see DC Current
Input protection: see DC Current
Resistance
  400 Ω, 4 kΩ, 40 kΩ, 400 kΩ, 4 MΩ, 40 MΩ  
Resolution 0.1 Ω on 400 Ω range
  400 Ω to 400 kΩ ranges ± (1.5% rdg + 4 dgts)
  4 MΩ range ± (2.5% rdg + 4 dgts)
  40 MΩ range ± (5.0% rdg + 5 dgts)
Open circuit volts: -0.45 VDC (-1.2 VDC on 400 Ω range)
Overload protection: 600 VDC or AC RMS
Frequency (Hz) (Auto ranging)
  4 kHz, 40 kHz, 400 kHz  
Resolution 1Hz ± (0.1% rdg + 3 dgts)
Sensitivity 10 Hz ~ 400 kHz: > 3.5 V RMS  
Minimum pulse width: >2.5 us  
Duty cycle limits: >30% and >70%
Overload protection: 600 VDC or AC RMS
Temperature
Ranges: -20°C to 1000°C (-4°F to 1832°F)  
Resolution 0.1°C, 0.1°F  
  -20°C to 10°C ± (2.0% rdg + 4°C)
  10°C to 200°C ± (1.0% rdg + 3°C)
  -20°C to 10°C ± (2.0% rdg + 4°C)
  200°C to 1000°C ± (3.0% rdg + 2°C)
  -4°F to 50°F ± (2.0% rdg + 8°F)
  50°F to 400°F ± (1.0% rdg + 6°F)
  400°F to 1832°F ± (3.0% rdg + 4°F)
Sensor type: K-type thermocouple  
Overload protection: 600 VDC or AC RMS  
RPM
Range: RPM 600 to 4000 RPM  
X10 RPM 4000 to 12000 RPM  
Resolution: 1 RPM ± (2% rdg + 4 dgts)
Effect Reading: 1 RPM ± (2% rdg + 4 dgts)
Overload protection: 600 VDC or AC RMS  
% Duty Cycle
  1.0% to 90.0%  
Resolution: 0.1%  
Pulse width: > 100 us, < 100 ms ± (2% rdg + 5 dgts)
Overload protection: 600 VDC or AC RMS  
Dwell Angle
No. of cylinders: 4,5,6,8    
  4 CYL 0 to 90.0°
  5 CYL 0 to 72.0°
  6 CYL 0 to 60.0°
  8 CYL 0 to 45.0°
Resolution: 0.1° ± (2% rdg + 5 dgts)
Overload protection: 600 VDC or AC RMS  
Continuity
Audible indication: Less than 25 Ω  
Response time: 500 ms 0 to 90.0°
Overload protection: 600 VDC or AC RMS  
Diode test
Test current: 1.0 mA (approximate) ± (3% rdg + 3 dgts)
Resolution: 10 mV  
Audible indication: < 0.25 V  
Open circuit volts: 3.0 VDC typical 0 to 90.0°
Overload protection: 600 VDC or AC RMS