General Technologies CT8027 Professional Automotive Digital Multimeter - Manual

1. SAFETY RULES
•
This meter is designed for indoor use at temperatures between 0°C to 40°C and
altitudes up to 2,000m.
• To ensure that the meter is used safely, follow all safety and operating instructions in
this operation manual. If the meter is not used as described in this operation manual,
the safety features of this meter might be impaired.
• Do not use the meter if the meter or test leads look damaged ,or if you suspect that
the meter is not operating properly.
• When using the instrument, keep your fingers behind the finger guards on the plastic
casing and probes.
• Disconnect the live test lead before disconnecting the common test lead.
• Make sure power is off before cutting, desoldering, or breaking the circuit wires. Small
amounts of current can be dangerous.
• Do not apply more than 600 VDC or 600V AC rms between a terminal and ground.
• To avoid electrical shock, use CAUTION when working above 60V DC or 25V AC rms.
Such voltages pose a shock hazard.
• Never make measurements with the battery cover off.
• To avoid electrical shock or damage to the meter, do not exceed the input limits.
2. INTERNATIONAL SYMBOLS
Important information Dangerous Voltages
see manual Continuity
AC Ground
DC Double Insulation
3. TECHNICAL SPECIFICATIONS
3.1 General Specifications
Display: 4 digits LCD, max. of 9999 display
Polarity: Automatic, (-) negative polarity indication
Zero adjustment: Automatic
Sample rate: 0.25 Sec., 0.05 Sec. for bar graph
Over range indication: “
OL ” is displayed
Power: 9-volt battery type NEDA 1604, IEC6F22
Battery life: Approx. 70 hours. (w/ alkaline batteries)
Dimension: 5.9”x2.95”x1.34” or 150x75x34 mm.
Weight: Approx. 8.9 Oz. or 252g (with battery).
Accesories:
User’s Manual, Test Leads, Protective
Holster, Hard carriying case, K-type
temperature probe, Inductive pick-up and
9V battery.
3.2 Electrical Specifications
•
Accuracies are ±(% of reading + number of least significant digits) at 23°C
±5°C, less than 75% RH. For DC/AC current measurement, the maximum cur-
rent of 10 A is for 30 Sec. with 5 min. cool down between measurements.
4. OPERATION
4.1 Instrument Description
1) Case
2) 4 Digit LCD display
3) Secondary Functions Button
4) Auto/Manual Select
5) Function Switch
6) Current Measurment Input
7) Common Input
8) Measurements Input
9) Trigger and Rel. Button
10) Hold and Max/Min. Button
4.2 Display Description
General Technologies Corp.
CT8027
Professional Automotive Digital Multimeter
Function Range Accuracy
Input
Impedance
Remarks
Overload
Protection
Resistance
999.9Ω 0.5%+6
-
1.3 V
Max. Test
Voltage
(2.7 V in
999.9Ω
range)
600 Vrms
9.999 kΩ,
99.99 kΩ
0.5%+2
999.9 kΩ,
4.000 MΩ
0.8%+2
40.00 MΩ 1.5%+5
Diode Test 9.999 V - < 3.5 V Test Voltage 600 Vrms
Frequency
999.9Hz to
20.0 kHz
0.01%+2
1, 2, 20 and 200 Vrms
Selectable threshold
600 Vrms
Fuel
Injector
0.05 - 250 mS 0.05mS+1
Selectable
+/- Slope,
and
Number of
Cylinders
600 Vrms
0.0 - 100 % 0.04%/krpm +2
0.05 - 250 mS 0.05mS+1
0.0 - 100 % 0.04%/krpm/cyl +2
Tachometer
120-20000 RPM
2 RPM
RPM 4
600 Vrms 60-10000 RPM RPM 2
30-5000 RPM RPM 2M
Dwell
0.0º - 360.0º 1.2 º/krpm+1
1 to 12
Cyl.
600 Vrms
0.0º - 100.0º 0.04 º/krpm/cyl +2
Temperature
-20º to 300ºC 3 ºC+1
K-Type Thermocouple
Probe
600 Vrms
301º to 500ºC 2%+1
0º to 572ºF 6 ºF+2
573º to 932ºF 2%+2
Function Range Accuracy
Input
Impedance
Remarks
Overload
Protection
DC Voltage
999.9 mV,
9.999 V,
99,99V
0.3%+3 10 MΩ,
16MΩ for
999.9 mV
range
- 600 Vrms
600 V 0.3%+5
AC Voltage
999.9 mV 2.5%+5 10 MΩ,
16MΩ for
999.9 mV
range
50~200Hz
600 Vrms
9.999 mV,
99.99 V
2.5%+5 50~500Hz
DC Current
4000 mA 1.2%+6 0.03V/A
Burden
Voltage
-
10 A - 250V
Fast Acting
Fuse 10.00 A 0.8%+4
AC Current
4000 mA 2.5%+10 0.03V/A
Burden
Voltage
-
10 A - 250V
Fast Acting
Fuse 10.00 A 1.2%+3
1
2
3
4 10
9
5
6
8
7
Analog
Bar Graph
Bar Graph
Overflow
Max./Min.
and Average
Bar Graph/Trigger Polarity
Record
Function
Auto Power Off
Autoranging Hold
Digital
Readout
Low Battery
Relative
Measure
ment