Oxford PRECISION OXD-516-1725D, Operator'S Manual

Page: 7 / 12

7
Resistance measurement
W
(See Figure 5)
I
3
I
UT220 OPERAT ING MANUAL
7. Do not measure the voltage or current higher than the allowable input value. Set the function range
switch at the maximum range position if the scope of measured value couldn't be defined. Prior to
measurement of on-line resistance and diode or the circuit on-off measurement, the power of circuits
being measured shall be powered off and all capacitors shall be completely discharged to assure the
measurement accuracy.
8. When LCD display shows the icon " �" it is required to replace the battery in time to ensure the
measurement accuracy. Take out battery when clamp meter is not in user for a long time.
9. Refrain from changing the internal wiring in the clamp ammeter to guard against damage to the meter
and danger.
10. Refrain from storing or using the clamp ammeter in the explosive and flammable environment with
high temperature, high humidity and strong electromagnetic field.
11. Clean the clamp meter case with soft cloth and neutral detergent. To prevent causing corrosion to
the case, or damage to the instrument and danger, it is forbidden to use abrasive material and solvent.
IV El t .
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Dual insulation
*
Diode
...J...
Grounding Data hold
&. Warning prompt
-
AC or DC (Alternating current or direct current)
~
_,
AC (Alternating current)
f
Danger! High voltage!
-
DC (Direct current)
CE
Comply with EU standard
---
.,,,
Continuity
CATIV Equipment is designed to protect against transients from the primary supply level (e.g. an
electricity meter, primary overcurrent protection devices).
Equipment is designed to protect against transients in equiftment in fixed installations (e.g.
CATIII switches in fixed installation, industnal used equipments wi h permanent connection to fixed
installations).
I
UT220 OPERAT ING MANUAL
V. External construction (See Figure 1)
1.
Clamp body:
Safety design to protect operator from
touching the dangerous area
2. Clamp head pulling handle:
Press the trigger to open
the clamp head, when release the trigger, clamp head
will partially closed.
3. Functional key: Select basic functions
4. Measure input terminal:
Measure the signal input
5. LCD display area:
Display the measured data and
functional symbols.
6. Dial switch: Select the measurement function gear.
7. Clamp head: A sensing device used to measure AC/DC
current and covert current into voltage .
Figure 1
4
Resistance
Q
Always make sure the power is off and
all capacitors are fully discharged before
measuring resistance.
A more accurate measurement result will be
achieved by separating the component from
the circuit.
1. Insert the black test lead into the COM
input port and the red test lead into the
“
Ω
” input port.
2. Turn the dial function switch to “
Ω
“.
3. Connect tip of the test leads to the
points where the value of the resistance
is needed.
4. Read the result from the LCD panel.
Diode measurement (See Figure 6)
I
3
I
UT220 OPERAT ING MANUAL
7. Do not measure the voltage or current higher than the allowable input value. Set the function range
switch at the maximum range position if the scope of measured value couldn't be defined. Prior to
measurement of on-line resistance and diode or the circuit on-off measurement, the power of circuits
being measured shall be powered off and all capacitors shall be completely discharged to assure the
measurement accuracy.
8. When LCD display shows the icon " �" it is required to replace the battery in time to ensure the
measurement accuracy. Take out battery when clamp meter is not in user for a long time.
9. Refrain from changing the internal wiring in the clamp ammeter to guard against damage to the meter
and danger.
10. Refrain from storing or using the clamp ammeter in the explosive and flammable environment with
high temperature, high humidity and strong electromagnetic field.
11. Clean the clamp meter case with soft cloth and neutral detergent. To prevent causing corrosion to
the case, or damage to the instrument and danger, it is forbidden to use abrasive material and solvent.
IV El t .
.
ec nca svm
bl OS
IQ]
Dual insulation
*
Diode
...J...
Grounding Data hold
&. Warning prompt
-
AC or DC (Alternating current or direct current)
~
_,
AC (Alternating current)
f
Danger! High voltage!
-
DC (Direct current)
CE
Comply with EU standard
---
.,,,
Continuity
CATIV Equipment is designed to protect against transients from the primary supply level (e.g. an
electricity meter, primary overcurrent protection devices).
Equipment is designed to protect against transients in equiftment in fixed installations (e.g.
CATIII switches in fixed installation, industnal used equipments wi h permanent connection to fixed
installations).
I
UT220 OPERAT ING MANUAL
V. External construction (See Figure 1)
1. Clamp body: Safety design to protect operator from
touching the dangerous area
2. Clamp head pulling handle:
Press the trigger to open
the clamp head, when release the trigger, clamp head
will partially closed.
3. Functional key:
Select basic functions
4. Measure input terminal: Measure the signal input
5. LCD display area: Display the measured data and
functional symbols.
6. Dial switch:
Select the measurement function gear.
7. Clamp head: A
sensing device used to measure AC/DC
current and covert current into voltage .
Figure 1
4
Resistance
Q
Always make sure the power is off and
all capacitors are fully discharged before
measuring resistance.
A more accurate measurement result will be
achieved by separating the component from
the circuit.
1. Insert the black test lead into the COM
input port and the red test lead into the
“
Ω
” input port.
2. Turn the dial function switch to “ ”,
press the “SELECT” button once and
“ ” will appear on the LCD.
3. Place the red and black test lead to the
positive and negative terminals of the
diode.
4. The forward conduction voltage value
will be indicated on the LCD.
5. When the red and black test lead is
inadvertently connected, the over range
symbol “OL” is displayed.