AT2150/B Automotive Tester
User’s Guide
Introduction
AT2150/B series digital multimeter is a 3½ digital with precise
design, convenient for operation, stable performance and with
multi-functions measuring instrument. It was designed with new
style guarantees protective covering, large screen liquid crystal
display. It uniquely incorporate with back light valve features, so it
is suitable to be used in the obscure ray environment operation.
The ”VΩ” is equipped with PTC heat sensitive element at the input
terminal.
Therefore, the Function/Range switch has efficient
protection.
AT2150/B series digital multimeter can measure DC Current
and Voltage, Current, AC Current and Voltage, Resistor, Capacitor,
Temperature, Diode and Transistor, Open Circuit and Short Circuit.
In addition, AT2150/B digital multimeter is also suitable for vehicles.
Safety Precautions and Procedures
for your own safety, you must read and follow the procedure in this
instruction
manual.
don’t try to use it if the battery cover is not closed properly,
otherwise you may have the danger of electric shock.
make sure the insulation layer has not any damages before use it.
never input signal electronic level exceeding the limited value to
avoid electronic shock or damaging the instrument.
don’t turn the function/range switch when taking measurement.
the potential difference between the measurement public terminal
COM and earth can’t exceed 1000V to avoid electric short.
pay attention if the tested voltage is over DC 60V and AC 42V to
avoid electric shock
if there have a symbol
on the LCD display, it indicates low
battery. replace the battery to ensure measurement accuracy.
For the fuse, it must be replaced with an identical model if necessary.
International Symbols
DC Current or Voltage
AC Current or Voltage
Diode
Buzzer
Low Battery
Cautions
Double Insulation
Danger High Voltage
Rotational Speed
Closed Angle
Characteristic
Low power consumption CMOS double integration, A/D transform
integrated circuit, auto zero calibration, auto polarity display, low
battery and over range indication.
DC basic accuracy : +0.5% (3 1/2 digits)
Capacitor measurement : 1pF~200uF
Temperature measurement : -40ºC~1000ºC
Full range over-load protection function.
Have back-light valve features, it is suitable to be used in the obscure
ray environment operation.
Auto power off function: the meter will shut off automatically about
15 seconds after no performance.
Maximum display : 1999 (3 1/2 digits)
LCD display : 70 x 48mm big screen, high contrast, Word height :
28mm
Power : one 9V battery (NEDA 1604, 6F22 model or identical)
Low battery indication: mark
on display
Size : 192x88x42mm
Weight : approximate 400g (including battery and cover)
Environment conditions :
Operation temperature : 0ºC~40ºC
Relative humidity <85%
Storage Temperature : -10ºC~50ºC
Relative humidity <85%
Keeping accuracy temperature : 23ºC+5ºC
Relative humidity <75%
Technical Specifications
Accuracy : + (% r digit) one year warranty.
Environmental humidity : 23ºC+5ºC
Relative humidity : <75%
Closed Angle Gauge
Range
Accuracy
Resolution
1CYL
0-180.0º
+(1.2%+2)
0.1º
3CYL
0-120.0º
4CYL
0-90.0º
5CYL
0-72.0º
6CYL
0-60.0º
8CYL
0-45.0º
Overload protection : 250V, DC or AC peak value
Rotational Speed
Range
Accuracy
Resolution
1CYL
500-10000
rotation / min.
+(1.2%+2)
10 rotation /
min.
3CYL
4CYL
5CYL
6CYL
8CYL
Overload protection : 250V, DC or AC peak value
Duty Ratio
Range
Accuracy
Resolution
0-100.0%
+(1.2%+2)
0.1%
Overload protection : 250V, DC or AC peak value
DC Voltage
Range
Accuracy
Resolution
2V
+(0.5%+3)
1mV
20V
10mV
200V
100mV
1000V
+(0.8%+3)
1V
Input impedance : 10MΩ
Overload protection : 1000V, DC or AC peak value
AC Voltage
AC Voltage
Range
Accuracy
Resolution
2V
+(0.5%+3)
1mV
20V
10mV
200V
100mV
700V
+(0.8%+3) 1V
Input impedance: 10MΩ
Frequency range : 40Hz-400Hz
Overload protection : 1000V, DC or AC peak value
Display : Average value (Sine RMS)
DC current
Range
Accuracy
Resolution
200mA
+(1.2%+3)
100uA
20A
+(2%+3)
10mA
Overload protection : 0.2A/250V fuse
Maximum input current : 20A/15 second
Voltage drop measurement : Full-scale voltage drop : 200mV
AC current
Range
Accuracy
Resolution
200mA
+(1.2%+3)
100uA
20A
+(2%+5)
10mA
Overload protection : 0.2A/250V fuse
Maximum input current : 20A/15 second
Voltage drop measurement : Full-scale voltage drop : 200mV
Frequency range : 40Hz-400Hz
Display : Average value (Sine RMS)
Resistance
Range
Accuracy
Resolution
200Ω
+(0.8%+3)
0.1Ω
2kΩ
+(0.8%+2)
1Ω
20kΩ
10Ω
200kΩ
100Ω
2MΩ
1kΩ
20MΩ
+(1%+5)
10kΩ
200MΩ
+(5%+10)
100kΩ
Overload protection : 250V DC or AC peak value
Open circuit voltage : <1V (2.8V in the 200MΩ)
Note : It is normal if the test lead short-circuit displays approx. 10
digits in the 200M Ω .
Please deduct these 10 digits when
measuring.
Capacitance
Range
Accuracy
Resolution
20nF
+(3%+3)
10pF
2uF
1nF
200uF
+(5%+3)
100nF
Frequency measurement : approx. 400Hz
Voltage measurement : approx. 40mV
