CEM DT-9560 User manual
Operating Instruction for
Heavy Duty Industrial True RMS
Autoranging Digital Multimeter
with VFD Measurement
Please read this manual before switching the unit on.
Important safety information inside.
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True RMS Autoranging Digital Multimeter
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Content
1.Introduction................................................................................
2.Safety.........................................................................................
2-1.Safety Symbols......................................................................
2-2.Per IEC1010 Overvoltage Installation Category........................
2-3.Safety Instructions.................................................................
3.Description..................................................................................
3-1.Meter Description..................................................................
3-2.Symbols Used on LCD Display.................................................
4. ..................................................................Operating Instructions
4-1. ........................................................DC Voltage Measuments
4-2.AC Voltage (Frequency, Duty Cycle) Measurements..................
4-3.mV Voltage Measurements......................................................
4-4.DC Current Measurements......................................................
4-5.AC Current (Frequency, Duty Cycle) Measurements..................
4-6.Resistance Measurements......................................................
4-7.Continuty Check.....................................................................
4-8.Diode Test..............................................................................
4-9.Capacitance Measurements....................................................
4-10.Frequency/Duty Cycle Measurements (Electronic)..................
4-11.Autoranging/Manual Range Selection....................................
4-12.MAX/MIN Mode....................................................................
4-13.Relative Mode......................................................................
4-14.Display Backlight................................................................
4-15.HOLD Mode.........................................................................
4-16.Auto Power Off.....................................................................
4-17.Low Battery Indication..........................................................
5.Maintenance................................................................................
5-1.Battery Installation................................................................
5-2.Replacing the Fuses...............................................................
6.Specifications..............................................................................
6-1.Specifications........................................................................
6-2.General Specifications............................................................
MAX
1000V
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True RMS Autoranging Digital Multimeter
1.Introduction
• This meter measures AC/DC Voltage, AC/DC Current, Resistance, Frequency (electrical & electronic),
Diode Test, and Continuity.
• It features a waterproof, rugged design for heavy duty use.
• Proper use and care of this meter will provide many years of reliable service.
2.Safety
2-1.Safety Symbols
This symbol adjacent to another symbol, terminal or operating device indicates that the
operator must refer to an explanation in the operating instructions to avoid personal injury
or damage to the meter.
This WARNING symbol indicates a potentially hazardous situation, which if not
avoided, could result in death or serious injury.
This CAUTION symbol indicates a potentially hazardous situation, which if not
avoided, may result damage to the product.
This symbol advises the user that the terminal(s) so marked must not be connected
to a circuit point at which the voltage with respect to earth ground exceeds (in this
case) 1000 VAC or VDC.
This symbol adjacent to one or more terminals identifies them as being associated with ranges
that may, in normal use, be subjected to particularly hazardous voltages. For maximum safety,
the meter and its test leads should not be handled when these terminals are energized.
This symbol indicates that a device is protected throughout by double insulation or reinforced
insulation.
WARNING
CAUTION
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True RMS Autoranging Digital Multimeter
2-2.Per IEC1010 Overvoltage Installation Category
Overvoltage Category I
Equipment of Overvoltage Category I is equipment for connection to circuits in which measures
are taken to limit the transient overvoltages to an appropriate low level.
Note: Examples include protected electronic circuits.
Overvoltage Category II
Equipment of Overvoltage Category II is energy-consuming equipment to be supplied from the
fixed installation.
Note: Examples include household, office, and laboratory appliances.
Overvoltage Category III
Equipment of Overvoltage Category III is equipment in fixed installations.
Note: Examples include switches in the fixed installation and some equipment for industrial use
with permanent connection to the fixed installation.
Overvoltage Category IV
Equipment of Overvoltage Category IV is for use at the origin of the installation.
Note: Examples include electricity meters and primary over-current protection equipment.
2-3.Safety Instructions
• This meter has been designed for safe use, but must be operated with caution.
• The rules listed below must be carefully followed for safe operation.
2-3-1.N EVER apply voltage or current to the meter that exceeds the specified maximum:
Input Protection Limits
Function
V DC
V AC
mA AC/DC
A AC/DC
Frequency, Resistance, CAP,
Diode Test, Continuity
Surge Protection: 8kV peak per IEC 61010
Maximum Input
1000VDC RMS
1000VAC RMS
800mA 1000V fast acting fuse
10A 1000V fast acting fuse (30 seconds max every 15 minutes)
250VDC/AC RMS
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True RMS Autoranging Digital Multimeter
2-3-2. USE EXTREME CAUTION when working with high voltages.
2-3-3.D O NOT measure voltage if the voltage on the “COM” input jack exceeds 1000V above earth
ground.
2-3-4.N EVER connect the meter leads across a voltage source while the function switch is in the
current, resistance, CAP, or diode mode. Doing so can damage the meter.
2-3-5.A LWAYS discharge filter capacitors in power supplies and disconnect the power when making
resistance or diode tests.
2-3-6.A LWAYS turn off the power and disconnect the test leads before opening the covers to replace
the fuse or batteries.
2-3-7.N EVER operate the meter unless the back cover and the battery and fuse covers are in place
and fastened securely.
2-3-8.I f the equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.
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True RMS Autoranging Digital Multimeter
3.Description
3-1.Meter Description
1-6,000 Counts LCD Display
2-RANGE Button
3-Mode Button
4-MAX/MIN Button
5-RELATIVE Button
6-Hz and % Button
7-HOLD and Backlight Button
Function Switch 8-
9-10A Input Jacks
10- mA Input JacksµA
11-Positive Input Jacks
12-COM Input Jacks
13-Tilt Stand
14-Battery Cover
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RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
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78
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True RMS Autoranging Digital Multimeter
3-2.Symbols Used on LCD Display
1-Display Hold
2-Units of Measure List
3-Percent (Duty Ratio)
4-Battery Status
5-Auto Power Off
6-Measurement Reading
7-Autoranging
8-Minimum
9-Maximum
10-Relative
11-Continuity
12-Diode Test
13-Minus Sign
14-Alternating Current
15-Direct Current
16-Frequency ConversionMeasure
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True RMS Autoranging Digital Multimeter
4.Operating Instructions
WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and
should be measured with great care.
• ALWAYS turn the function switch to the OFF position when the meter is not in use.
• If “OL” appears in the display during a measurement, the value exceeds the range you have
selected. Change to a higher range.
4-1.DC Voltage Measuments
CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF. Large
voltage surges may occur that can damage the meter.
1. Set the function switch to the VDC position.
2. Insert the black test lead banana plug into the negative COM jack; Insert the red test lead
banana plug into the positive V jack.
3. Touch the black test probe tip to the negative side of the circuit; Touch the red test probe tip to
the positive side of the circuit.
4. Read the voltage in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
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True RMS Autoranging Digital Multimeter
4-2.AC Voltage (Frequency, Duty Cycle) Measurements
WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the live parts
inside some 240V outlets for appliances because the contacts are recessed deep in the outlets. As
a result, the reading may show 0 volts when the outlet actually has voltage on it. Make sure the
probe tips are touching the metal contacts inside the outlet before assuming that no voltage is
present.
CAUTION: Do not measure AC voltages if a motor on the circuit is being switched ON or OFF. Large
voltage surges may occur that can damage the meter.
1. Set the function switch to the VAC position. Indicate “AC” onthedisplay.
2. Insert the black test lead banana plug into the negative COM jack; Insert red test lead banana
plug into the positive V jack.
3. Touch the black test probe tip to the neutral side of the circuit; Touch the red test probe tip to
the “hot” side of the circuit.
4. Read the voltage in the display.
5. Press and hold the MODE button key for 2 seconds to indicate “VFD” on the display.
6. Read the VFD value in the display.
7. To exit VFD mode press and hold the MODE button for 2 seconds.
8. Press the HZ/% button to indicate “Hz”.
9. Read the frequency in the display.
10. Press the Hz/% button again to indicate “%”.
11. Read the % of duty cycle in the display.
RANGE
MODE
REL
Hz%
HOLD
MAX
MIN
OFF
Ω
CAP
mA
Auto Power Off
10A
mA
μA
10A V
FUSED
MAX
800mA COM
CAT IV 600V
CAT III 1000V
Hz
%
Hz%
Hz%
Hz%
Hz%
mV
Hz%
True RMS Autoranging Digital Multimeter
V
VFD
VFD
V Ω CAP
Hz%
30 sec MAX
every 15 min
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