GTC CT8015 User 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.
•Toensurethatthemeterisusedsafely,followallsafetyandoperatinginstructionsin
thisoperationmanual.Ifthemeterisnotusedasdescribedinthisoperationmanual,
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.
•Whenusingtheinstrument,keepyourfingersbehindthefingerguardsontheplastic
casing and probes.
•Disconnect the live test lead before disconnecting the common test lead.
•Makesurepowerisoffbeforecutting,desoldering,orbreakingthecircuitwires.Small
amounts of current can be dangerous.
•Do not apply more than 600 VDC or 600VAC 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, Test Leads, Protective
Holster, Soft Pouch 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.
4. OPERATION
4.1 Instrument Description
1) Case
2) 3-1/2 Digit LCD display
3) DC Voltage range
4) Function/Range switch
5) DC Current range
6) Input Sockets
7) Power OFF
8) AC Voltage range
9) Transistor Test
10) Resistance range
11) Diode Continuity Test
12) Transistor Test Socket
Function Range Accuracy Input
Impedance Remarks Overload Protection
DC Voltage 200mV, 2000mV, 20V,
200V, 600V 0.8%+1 1 M- 600 Vp-p
AC Voltage 200V, 600V 1.5%+10 450 K40~400Hz 600 Vp-p
DC Current
200A,
2000A, 20mA 1.0%+2 - - 200 mA -
250V Fuse
200mA 1.2%+2 - -
10A 2.0%+5 10 A - 250V
Fuse
Resistance 200, 2K,
20k,200k 1.0%+3 - - 250 Vp-p
2000k1.0%+3 250 Vp-p
Continuity Buzzer sounds when <100Test Voltage: 2.4 V Max. 250 Vrms
Diode Test Test Current:1.0±0.6mA Test Voltage: 2.4 V Max. 250 Vrms
Transistor
Test NPN and PNP Compatible 0 to 1000hFE -
4.2 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.
4.2.1 DC Voltage measurement
• Connect the black test lead to the “COM” socket and red test lead
to the “V mA” socket.
• Set the FUNCTION/RANGE switch to the desired range in the
“V ” function. If the voltage range is not known beforehand, set
the switch to the highest range and work down as needed.
• Connect the test leads across the source or load under
measurement.
• The measurement and polarity will be shown the LCD Display
when the probe are connected.
4.2.2 AC Voltage measurement
• Connect the black test lead to the “COM” socket and red test lead
to the “V ΩmA” socket.
• Set the FUNCTION/RANGE switch to the desired range in the
“V” function. If the voltage range is not known beforehand, set
the switch to the highest range and work down as needed.
• Connect the test leads across the source or load under
measurement.
• The measurement will be shown the LCD Display when the
probe are connected.
OFF
VV
Ω
A
max 10A
fused
10A COM
CAT II
MAX 600V
400mA fused
V Ω mA
max
600V
AUTO POWER OFF
1
2
3
4
5
6
7
8
9
10
11
12
hFE
CT8015

4.2.3 DC Current measurement
• Connect the black test lead to the “COM” socket and red test
lead to the “V mA” socket for below 200mA currents. For
measurements between 200mA and 10 A, the red test lead
should be connected to the 10A socket.
• Set the FUNCTION/RANGE switch to the desired range in the
“A ” function. If the current range is not known beforehand, set
the switch to the highest range and work down as needed.
• Connect the test leads in series with the source or load under
measurement.
• The measurement and polarity of the current will be shown the
LCD Display when the current is flowing through the instrument.
4.2.4 Resistance measurement
CAUTION: Maximum Input Voltage for this function is 250
Vrms for less than 10 Sec., do not exceed this
rating to avoid personal injuries or damage to the
instrument. Also ensure there is no power applied
to the component or circuit and all capacitors are
discharged.
• Connect the black test lead to the “COM” socket and red test lead
to the “V mA” socket.
• Set the FUNCTION/RANGE switch to the desired range in the
“” function. If the resistancege range is not known beforehand,
set the switch to the highest range and work down as needed.
• Connect the test leads across the componet or circuit under
measurement.
• The measurement will be shown the LCD Display when the
probe are connected.
4.3 Other Functions
4.3.1 Diode test
CAUTION: Maximum Input Voltage for this function is 250
Vrms for less than 10 Sec., do not exceed this
rating to avoid personal injuries or damage to the
instrument. Also ensure there is no power applied
to the diode.
• Connect the black test lead to the “COM” socket and red test lead
to the “V mA” socket.
• Set the FUNCTION/RANGE switch to the function.
• Proceed to connect the test leads across the diode observing the
polarity: red probe to the anode (+) of the diode and black test
lead to the cathode (-).
• The measurement will be shown the LCD Display when the diode
is connected.
4.3.2 Continuity Test
CAUTION: Maximum Input Voltage for this function is 250
Vrms for less than 10 Sec., do not exceed this
rating to avoid personal injuries or damage to the
instrument. Also ensure there is no power applied
to the circuit.
• Connect the black test lead to the “COM” socket and red test lead
to the “V mA” socket.
• Set the FUNCTION/RANGE switch to the function.
• Proceed to connect the test leads across the circuit.
• Buzzer will sound if the circuit resistance is below 100.
4.3.2 Transistor Test
Set the selector switch to “hFE” position, proceed to insert the
transistor leads into the socket, observing to the type of transistor
(NPN or PNP) and pinout. Read hFE on the LCD display.
5. MAINTENANCE
CAUTION: Before attempting battery removal or replacement,
disconnect test leads and remove the instrument
from any energized circuit to avoid shock hazard.
5.1 Battery Replacement
• Toreplace thebattery, removethe screwofthebackBattery Cover
(back of the case) and remove the battery.
• Replace with a new 9 V alkaline battery type NEDA 1604 or
IEC6F22 observing the proper polarity from the diagram on the
label inside the battery compartment.
• Reinstall the battery cover and tighten the securing screw.
5.2 Fuse replacement
• Remove the screw of the back Battery Cover (back of the case)
and remove the battery.
• Remove the screws at the bottom of the case and of the battery
compartment.
• Replace new fuses only with the identical type and rating.
F1=200mA: Type IEC60127-2 or UL248-14 (5 x 20mm)
fast acting fuse, rated at 200mA/250V.
F2=10A: Type IEC60127-2 orUL248-14 (6.3x25.4mm)
fast acting fuse, rated at 10A/250V.
• Reinstall the back cover, and replace the four screws,
• Reinstallthe battery observingthe polarity onthe battery compart-
ment label, the battery cover and tighten the securing screw.
5.3 Cleaning
Periodicallywipe the casewith asoft damp clothand mildhousehold
cleanser.Do notuse abrasivesor solvents.Ensure thatno watergets
inside the instrument to prevent possible shorts and damage.
6. WARRANTY
One year limited warranty, excluding batteries and fuses. For details
see Standard Warranty Information in our webpage or you may request
a printed copy.
© Copyright 2017 General Technologies
General Technologies Corp.
#121 - 7350 72nd Street Tel.: [phone]
Delta, BC V4G 1H9 Fax: [phone]
Canada www.gtc.ca