General Technologies CT8022 Ergonomic 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 digits LCD, max. of 3999 display
with
decimal point and engineering units
Polarity: Automatic, (-) negative polarity indication
Zero adjustment: Automatic
Sample rate: 0.5 Sec.
Over range indication: reading
“ OL ” is displayed
Power: 9-volt battery type NEDA 1604, IEC6F22
Battery life: Approx. 50 hours. (w/ alkaline batteries)
Dimension: 141 x 69 x 36 mm.
Weight: Approx. 160g (including battery).
Accesories: User’s Manual, Alligator Clip, Probes
Cups and 9V alkaline battery
3.2 Electrical Specifications
• The mark next to the probe tip, is a warning that the input
voltage should not exceed the indicated values. This is to pre-
vent personal injuries and damage to the internal circuitry.
• The function switches should be set to the function which you
want to test before operation.
• Accuracies are ±(% of reading + number of least significant
digits) at 23°C ±5°C, less than 75% RH.
4. OPERATION
4.1 Instrument Description
1) Case
2) 3-3/4 Digit LCD display
3) ON/OFF and Range switch
4) Function switch
5) Fixed test lead with probe
6) Fixed probe tip and fuse cap
7) Battery cover
8) Display hold push button (back of the unit)
9) Probes cups
10) Alligator clip
Function Range Accuracy
Input
Impedance
Remarks
Overload
Protection
DC Voltage
4000mV, 60V
600V
0.8%+1 10 MΩ - 600 Vp-p
AC Voltage
4000mV, 60V
600V
1.2%+3 10 MΩ 40~400Hz 600 Vp-p
DC Current 40 - 400 mA 1.2%+3 - -
400 mA/
250V Fuse
AC Current 40 - 400 mA 1.2%+5 - 40~400Hz
400 mA/
250V Fuse
General Technologies Corp.
CT8022
Autorange Ergonomic Handheld Multimeter
4.2 Display Description
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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Function Range Accuracy
Input
Impedance
Remarks
Overload
Protection
Resistance
400Ω, 4kΩ,
40kΩ,400kΩ
4MΩ
1.0%+2 -
1.2 mA
max. test
current
250 Vp-p
40 MΩ 1.5%+2 -
0.47 mA
max. Test
current
250 Vp-p
Diode Test Test Current:1.0± 0.6mA Test Voltage: 3.2 V Max. 250 Vrms
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