General Technologies CT8017 Autorange 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: 3 3/4 digit LCD with decimal point and
33 segments bargraph display.
Polarity: Automatic, (-) negative polarity indication
Zero adjustment: Automatic
Sample rate: 0.5 Sec.
Over range indication: Symbol
“ OL ” is displayed
Power: 2 x 1.5 V battery, type AA, UM3 or equiv.
Power saving:
Automatic power off
Battery life: Approx. 50 hours. (w/ alkaline batteries)
Dimension: 6.34 x 3 x 2” (HxWxD).
Weight: Approx. 11.4 Oz. (including batteries)..
Accesories: User’s Manual,Test Leads,Protective,
Holster, Soft Pouch and 2 x 1.5 Volt
alkaline batteries
3.2 Electrical Specifications
• Accuracies are ±(% of reading + number of least significant
digits) at 23°C ±5°C, less than 75% RH.
4. OPERATION
4.1 Instrument Description
4.2 LCD Display Description
General Technologies Corp.
CT8017
Autorange Digital Multimeter
Function Range Accuracy
Input
Impedance
Remarks
Overload
Protection
DC Voltage
320 mV 0.8%+2
2 MΩ - 600 Vp-p
3.2V, 32V,
320V, 600V
1.2%+2
AC Voltage
3.2V, 32V,
320V, 600V
1.2%+5 2 MΩ 50~400Hz 600 Vp-p
DC Current
320µA,
3200µA,
32mA,320mA
1.5%+2
< 163 mV Voltage Drop
10A max. for <10 Sec
Fuse pro-
tection 10 A
- 250V, 10A
max. 10
Sec. 10A 2.5%+2
AC Current
320µA,
3200µA,
32mA,320mA
1.5%+5
< 163 mV Voltage Drop
10A max. for <10 Sec
Fuse pro-
tection 10 A
- 250V,
10A 2.5%+5
Function Range Accuracy Remarks
Overload
Protection
Resistance
320Ω, 3.2KΩ,
32kΩ ,320kΩ,
3.2MΩ
1.2%+5
Max. Testing Voltage:
< 1.5 V
250 Vp-p
32MΩ 3.5%+5 250 Vp-p
Continuity Buzzer sounds when <18Ω Test Voltage: 1.2 V Max. 250 Vrms
Diode Test
Displays forward diode Volt-
age drop (Vf)
Test Current < 0.6mA 250 Vrms
4.3 Measurement Procedures
CAUTION: Maximum Input Voltage is 600Vrms,do not exceed
this rating to avoid personal injuries or damage to
the instrument. The range FUNCTION/RANGE
switch should be set to the range you want to test
before the operation.
CAUTION: Always ensure that the correct terminals are used
for the type of measurement to be made. Avoid
making connections to “live” circuits whenever
possible.When making current measurements en-
sure that the circuit is not “live” before opening it in
order to connect the test leads.
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Beeper enable
Digital Readout
Manual range
enable
Measurement
units
Low battery
Analog bar graph
DC
Data Hold
AC
Diode test
enable
1) Case
2) Display
3) Hold button
4) Function switch
5) Input and common
connectors
6) Alterate function button
7) Range button