AT-205P/9945/9945T

Automotive Digital Multimeter provides multi-functions:
RPM measurement for automotive engines with 2 to 10 Cylinders using the inductive Pick-up
AT-9945T is True RMS Autoranging Automotive DMM
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 (ºC/ºF), 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-9945/9945T measures Milliseconds pulse width to test on-time of fuel injectors, idle air control motors, and electronic transmission controls


Size(HxWxD): AT-205P: 146mm x 66mm x 41.5mm

AT-9945/9945T: 195mm x 92mm x 38mm

Weight: AT-205P: 200g;

AT-9945/9945T: 380g


Specifications

Function

Range

Basic Accuracy

Voltage DC

400mV, 4V, 40V, 400V, 1000V

±(0.5%+2d)

Voltage AC

400mV, 4V, 40V, 400V, 1000V

±(0.8%+2d)

Current DC

400uA, 4000uA, 40mA, 400mA, 4A, 20A

±(1.2%+2d)

Current AC

400uA, 4000uA, 40mA, 400mA, 4A, 20A

±(1.5%+2d)

Resistance

400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ

±(0.8%+2d)

RPM(Tach)

600 ~ 4000RPM; 600 ~ 12000RPM(x 10RPM)

±(2.0%+2d)

Dwell

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

-20ºC ~ 760ºC/-4ºF ~ 1400ºF

±(3.0%+2d)

Capacitance

40nF, 400nF, 4uF, 40uF, 100uF

±(3.0%+2d)

Pulse Width (9945)

0.1~10mS

±(3.0%+2d)

Diode Check

Open circuit voltage 1.5V dc; Test current 0.3mA typical.

Continuity Test

Threshold 30Ω, Continuity Beeper 2.7KHz





Accessories:

Rubber holster, Test leads, type K temperature Probe, Inductive pick-up and 9V battery.

AT-205P/9945/9945T
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