Unit UT805 Bedienungsanleitung
Model UT805
OPERATING MANUAL
TABLE OF CONTENTS
TITLE PAGE
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Model UT805: OPERATING MANUAL
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Overview
Unpacking Inspection
Safety Information
Rules For Safe Operation
International Electrical Symbols
The Meter Structure
A. Front Panel
B. Rear Panel
Functional Buttons
Display Symbols
Measurement Operation
A. DC Voltage Measurement
B. AC Voltage Measurement
C. DC or AC Current Measurement
D. Measuring Resistance
E. Testing Diodes
F. Testing for Continuity
G. Capacitance Measurement
H. Frequency Measurement
Selecting a Measurement Range ( , AUTO and Button)
The Use of Relative Value Mode
MAX MIN Mode
The Use of STO and RCL Button
Operation of Hold Mode
General Specifications
Accuracy Specifications
A. DC Voltage
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TITLE PAGE
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Model UT805: OPERATING MANUAL
B. AC Voltage
C. DC Current
D. AC Current
E. Resistance
F. Diode Test
G. Continuity Test
H. Capacitance
I. Frequency
Calibration Procedure
A. DC Voltage
B. AC Voltage
C. DC Current
D. AC Current
E. Resistance
F. AC Voltage with DC deviation (AC+DC)
G. AC Current with DC deviation (AC+DC)
Summary of error codes
Maintenance
A. General Service
B. Replacing the Fuses
RS232C and USB Serial Port
System Requirements for Installing the UT805 Interface Program
RS232C Serial Port
A. Connecting between the Meter and computer
B. RS232C Port Cable
C. Setting of RS232C Serial Ports
USB Serial Port
A. Connecting between the Meter and computer
B. Setting of USB Serial Ports
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Model UT805: OPERATING MANUAL
Overview
This Operating Manual covers information on safety
and cautions. Please read the relevant information
carefully and observe all the Warnings and Notes strictly.
Warning
To avoid electric shock or personal injury, read the
“Safety Information” and “Rules for Safety Operation”
carefully before using the Meter.
Model UT805 is a kind of 5 1/2 digit, vacuum-fluorescent,
dual display bench-type true RMS Multimeter (hereafter
referred to as “the Meter”). The Meter’s circuit design
is the combination of large scale integrated simulation
and digital circuit, taking microcomputer technology
with 24 counts A/D converter as a core, highly precise
amplifier, True RMS’s AC converter and full electronic
calibration technique to make it as a reliable and accurate
Multimeter.
In addition to all the conventional features including
DC/AC voltage, current, resistance, diode, continuity
test, capacitance, frequency, there is a recall function.
RS232C and USB standard serial port for easy
connection with computer to realize macro recording
and monitoring and capture of transient dynamic data,
displaying change of waveform during the measurement,
providing data and evidence to engineering technicians
for scientific research.
This is also a highly applied digital multimeter of good
performance with full overload protection. This Meter
uses AC power to make it becoming a better electrical
equipment.
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Item Description Qty
Model UT805: OPERATING MANUAL
Unpacking Inspection
Carefully remove the Meter from its shipping container and check the following items carefully to see any missing
or damaged part:
In the event you find any missing or damage, please contact your dealer immediately.
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Operating Manual
Test Lead
Alligator Clip
Multi-Purpose Socket
Line Cord (AC220V~50Hz, 15W or AC110V~50Hz, 15W)
RS232C Interface Cable
USB Interface Cable
Installation Guide & Computer Interface Software (CD-ROM)
1 piece
1 pair
1 pair
1 piece
1 piece
1 piece
1 piece
1 piece
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Model UT805: OPERATING MANUAL
Safety Information
This Meter complies with the standards IEC61010: in
pollution degree 2, overvoltage category (CAT. I 1000V,
CAT II 600V) and double insulation.
CAT. III: Distribution level, fixed installation, with smaller
transient overvoltage than CAT. IV.
CAT IV: Primary supply level, overhead lines, cable
systems etc.
Use the Meter only as specified in this operating manual,
otherwise the protection provided by the Meter may be
impaired.
In this manual, a Warning identifies conditions and
actions that pose hazards to the user, or may damage
the Meter or the equipment under test.
A Note identifies the information that user should pay
attention on.
International electrical symbols used on the Meter and
in this Operating Manual are explained on page 7.
Rules For Safe Operation
Warning
To avoid possible electric shock or personal injury,
and to avoid possible damage to the Meter or to the
equipment under test, adhere to the following rules:
Before using the Meter inspect the case. Do not use
the Meter if it is damaged or the case (or part of the
case) is removed. Look for cracks or missing plastic.
Pay attention to the insulation around the connectors.
Inspect the test leads and power cord for damaged
insulation or exposed metal. Check the test leads
for continuity. Replace damaged test leads and power
cord with identical model number or electrical
specifications before using the Meter.
Inspect the VFD display for no display..
Do not apply more than the rated voltage, as marked
on the Meter, between the terminals or between any
terminal and grounding.
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Model UT805: OPERATING MANUAL
Ensure the Meter is at right measurement position
range. Disconnect the connection between the test
lead and the circuit under tested before changing
over the range. No changeover of range shall be
made during measurement is conducted to prevent
damage of the Meter.
When the Meter working at an effective voltage over
60V in DC or 30V inAC, special care should be taken
for there is danger of electric shock.
Use the proper terminals, function, and range for your
measurements.
Under the manual ranging mode, if the value to be
measured is unknown, use the maximum
measurement position and reduce the range step by
step until a satisfactory reading is obtained.
Do not use or store the Meter in an environment of
high temperature, humidity, explosive, inflammable
and strong magnetic field. The performance of the
Meter may deteriorate after dampened.
When using the test leads, keep your fingers behind
the finger guards.
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Disconnect circuit power and discharge all high-
voltage capacitors before testing on-line resistance,
continuity, diodes, current, or capacitance.
Before measuring current, check the Meter’s fuses
and turn off power to the circuit before connecting
the Meter to the circuit.
Remove test leads, RS232C interface cable, USB
interface cable and alligator clip from the Meter and
turn the Meter power off before opening the Meter
case.
When servicing the Meter, use only the same model
number or identical electrical specifications
replacement parts.
The internal circuit of the Meter shall not be altered
at will to avoid damage of the Meter and any accident.
Soft cloth and mild detergent should be used to clean
the surface of the Meter when servicing. No abrasive
and solvent should be used to prevent the surface of
the Meter from corrosion, damage and accident.
The Meter is suitable for indoor use.
Turn the Meter power off when it is not in use.
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Model UT805: OPERATING MANUAL
International Electrical Symbols
AC or DC
Grounding
Double Insulated
Warning. Refer to the Operating Manual
High Voltage
Continuity Test
Diode
Capacitance Test
Fuse
Conforms to Standards of European Union
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Model UT805: OPERATING MANUAL
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789101112
The Meter Structure
A. Front Panel (see figure 1)
VFD Display
Primary Functional Buttons: Different key functions
selection.
COM Input Terminal: Negative input terminal,
inserting the black test lead.
V/ Input Terminal: Positive input terminal for voltage
and resistance measurement, inserting the red test
lead.
200mA MAX Input Terminal: Positive input terminal
for mA measurement, inserting the red test lead.
6. 10A MAX Input Terminal: Positive input terminal
for A measurement, inserting the red test lead.
Input Terminal: Positive input terminal for
capacitance, frequency, diode and continuity
measurement, inserting the red test lead.
2mA and 200mA Buttons: mA and A
measurement selection
AC+DC Button: The measurement of AC voltage
or current with DC deviation.
(figure 1)
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