General Technologies CT8012 Ergonomic 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 500 VDC or 500V 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: 3-1/2 digits LCD, max. of 1999 display
Polarity: Automatic, (-) negative polarity indication
Zero adjustment: Automatic
Sample rate: 0.5 Sec.
Over range indication: Only the MSD “1” 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. 330g (including battery).
Accesories: User’s Manual, Alligator Clip, 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) 3-1/2 Digit LCD display
3) Range switch
4) Function switch
5) Fixed test lead with probe
6) Fixed probe tip and fuse cap
7) Battery cover
8) Function / Range table
9) Display hold push button (back of the unit)
Function Range Accuracy Input
Impedance
Remarks Overload
Protection
DC Voltage 2000mV,20V,
200V, 600V
0.8%+1 1 MΩ - 600 Vp-p
AC Voltage 200V, 600V 1.5%+10 450 KΩ 50~500Hz 600 Vp-p
DC Current 200 mA 2.0%+2 - 200 mA/
250V Fuse
Resistance 2kΩ, 20kΩ,
200kΩ,2000kΩ
1%+3 - - 250 Vp-p
Diode Test Test Current:1.0± 0.6mA Test Voltage: 3.2 V Max. 250 Vrms
Continuity Beeps when < 100� 3VDC Max. Test Voltage 250 Vrms
4.2 Measurement Procedures
CAUTION: Maximum Input Voltage is 500Vrms,do not exceed
this rating to avoid personal injuries or damage to
the instrument. The range switch should be set to
the range you want to test before the operation.
4.2.1 DC Voltage measurement
General Technologies Corp.
CT8012
Ergonomic Handheld Multimeter
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Set the FUNCTION switch to V and the RANGE switch to the
desired range position, according to the Function/Range Table.
Proceed to connect the test leads across the source or load under
measurement. If the voltage range is not known beforehand, set
the range switch to the highest range and work down. The polarity
will be indicated when the tip probe is connected.
4.2.2 AC Voltage measurement
Set the FUNCTION switch to V and the RANGE switch to
desired position, according to the Function/Range Table.
Proceed to connect the test leads across the source or load under
measurement, and read the measurement on the LCD screen.
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