225AUTO : 28-09-2012
3.
When the reading is lower than 40A, set the Function / Range
switch to the next lower range position.
2.2 Voltage Measurements
1.
Connect the red test lead to the “V
V
” jack and the black test lead
to the “COM” jack.
2.
Set the Function/Range switch to the desired Voltage type
(AC or DC)
3.
Connect the test leads to the device or circuit being measured.
4.
For DC, a (-) sign is displayed for negative polarity; positive
polarity is implied.
2.3 Resistance Measurements
1.
Connect red test lead to the “V
V
” jack and black test lead
to the “COM” jack.
2.
Set Function / Range switch to the
V
/
/ range.
3.
Select resistance range by using Select Button.
4.
If the resistance being measured is connected to a circuit,
turn off power to the circuit being tested and discharge all
capacitors.
2.1 Current Measurements
1.
Set the Function / Range switch to the highest 400A range.
2.
Press the trigger to open transformer jaws, clamp onto one
conductor only and release trigger. Jaws should be completely
closed. Read the current directly on the display. It is
recommended that the conductor be placed at th e center of
the closed jaws for maximum accuracy (Fig. - 1).
Fig. 1
7
3
5.
Connect test leads across the resistance being measured.
When measuring high resistance, be sure not to contact
adjacent points even if insulated because some insulators
have a relatively low insulation resistance, causing the measured
resistance to be lower than the actual resistance.
6.
Read resistance value on digital display. If a high resistance
value is shunted by a large value of capacitance allow display to
stabilize.
2.4 Diode Test
1.
Connect the red test lead to the “V
V
” jack and black test lead
to the “ COM ” jack.
2.
Set the Function / Range switch to the “
V
/
/ ”.
3.
Select Diode range by using Select Button.
4.
Turn off power to the circuit under test.
5.
Touch probes to the diode. A forward-voltage drop is about
0.6V (typical for a silicon diode).
6.
If the digital display reads overrange “ OL ”, reverse the lead
connections. The placement of the test leads when the forward
reading is displayed indicates the orientation of the diode. The
red lead is positive and the black lead is negative. If overrange
“ OL ” is displayed with both lead connections, the junction is
open. If a low reading (less than 1000) is obtained with both
lead connections, the junction is shorted internally or (if
junction is measured in a circuit) the junction is shunted by a
resistance less than 1K
V.
In the letter case the junction must
be disconnected from the circuit in order to verify its operartion.
2.5 Continuity Measurement
1.
Connect red test lead to the “V
V
” jack and black test lead
to the “COM” jack.
2.
Set Function / Range switch to the
V
/
/ range.
3.
Select Continuity range by using Select Button.
In the continuty test, the beeper sounds cuntinuously, if the resistance
is less than 50
V.
3. MAINTENANCE
WARNING
Remove test leads before changing battery or servicing.
Battery Replacement
Power is supplied by two 1.5V ‘AAA’ size battery or Equivalent.
The “
” appears on the LCD display when replacement is needed,
To replace the battery, remove the screw from the battery cover and
lift off the battery case. Remove the batterys & repleced with new
batterys.
4. SAFETY INFORMATION
The following safety information must be observed to ensure maximum
personal safety during the operation of this meter:
1. Do not use the meter if the meter or test leads look damaged,
or if you suspect that the meter is not operating properly.
2. This Clamp Meter is designed to take current measurements
on circuits with a maximum voltage difference of 500VAC
between any conductor and ground potential. Using the
instrument for current measurements on circuits above this
voltage may cause electric shock, instrument damage or
damage to the equipment under test.
Before measuring current make certain the test leads are
removed from the instrument.
3. The instrument is protected for overload upto 600 VAC for 1
minute. Do not take current readings on circuits where the
maximum current potential is not known.
Do not exceed the maximum currents that this instrument is
designed to measure.
4. Turn off power to the circuit under test before cutting,
unsoldering, or breaking the circuit. Small amounts of current
can be dangerous.
5. Use caution when working above 60V DC or 30V AC rms.
Such voltages pose a shock hazard.
6. When using the probes, keep your fingers behind the finger
guards on the probes.
7. Measuring voltage which exceeds the limits of the clamp meter
may damage the meter and expose the operator to a shock
hazard. Always recognize the meter voltage limits as stated
on the front of the meter.
7
8
6
5
CERTIFICATE OF CALIBRATION
We hereby certify that this product has been
calibrated and found to be in accordance with
the applicable SPECIFICATIONS and MECO
STANDARDS.
Accuracies of the standard equipment used in
this calibration are traceable to the National
Standards.
MECO METERS PVT. LTD.
Plot No. EL-60, MIDC Electronic Zone, TTC Industrial Area,
Mahape, Navi Mumbai - 400710 (INDIA)
Tel :
0091-22-27673311-16, 27673300 (Board)
Fax :
0091-22-27673310, 27673330
E-mail :
Web :
www.mecoinst.com
SR. NO
: ________________________________
CHECKED BY : ________________________________
DATE
: ________________________________
MODEL NO
: ________________________________
®
www.instrukart.com
