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AT-9945
Automotive Digital Multimeters
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Large LCD display
- RPM measurement for automotive engines with 2 to 10 Cylinders using the inductive Pick-up.
- Oversized high contrast 4000 counts LCD display with backlight
- 13 Functions including DCV, ACV, DCA, ACA, Resistance, RPM(Tach), Dwell angle, Duty cycle, Frequency, Temperature(℃/℉), Capacitance, Continuity and Diode Check.
- Read pulse duty cycle and dwell angle for electronic fuel injection feedback carburetors, and ignition,
- Data Hold and Relative functions.
- Over-range indication
- Auto Power Off
- Fused current inputs and Overload protection on all ranges.
- AT-9945 measures Milliseconds pulse width to test on-time of fuel injectors, idle air control motors, and electronic transmission controls.
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Specifications |
Function |
Range |
Basic Accuracy |
Voltage DC |
400mV,4V,40V,400V,1000V |
±(0.5%+2d) |
Voltage AC |
400mV,4V,40V,400V,700V |
±(0.8%+4d) |
Current DC |
400uA,4000uA,40mA,400mA,4A,20A |
±(1.2%+2d) |
Current AC |
400uA,4000uA,40mA,400mA,4A,20A |
±(1.5%+4d) |
Resistance |
400Ω,4kΩ,40kΩ,400kΩ,4MΩ,40MΩ |
±(0.8%+3d) |
RPM(Tach) |
600~4000RPM;600~12000RPM(x 10RPM) |
±(2.0%+2d) |
Dwell Angle |
4,5,6,8CYL |
±(2.5%+2d) |
Duty Cycle |
0.1~99.9% |
±(1.5%+2d) |
Frequency |
0.001Hz~9.99MHz |
±(2.0%+2d) |
Temperature |
-20℃~760℃/-4℉~1400℉ |
±(3.0%+2d) |
Capacitance |
40nF,400nF,4uF,40uF,100uF |
±(3.0%+2d) |
Pulse Width(9945) |
0.1~10mS |
±(3.0%+5d) |
Diode Check |
Open circuit voltage 1.5V dc;
Test current 0.3mA typical. |
Continuity Test |
Threshold 30Ω,Continuity Beeper 2.7kHz |
Size(HxWxD):195mm x 92mm x 38mm
Weight:380g
Accessories: Rubber holster, Test leads, K-type temperature Probe, Inductive Pick-up and 9V battery. |
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