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4.
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.
5.
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 "VV" jack and black test lead
to the " COM " jack.
2.
Set the Range switch to the "
5
Important : To avoid heat damage to the meter keep it away from
sources of very high temperature. The life of the temperature probe is
also reduced. When subjected to very high temperature.
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 cover. 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
7
on the front of the meter.
3
/
".
3.
Select Diode range by using Function 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 1KV. 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 "VV" jack and black test lead
to the "COM" jack.
2.
Set Range switch to the
3.
Select Continuity range by using Function Button.
In the continuty test, the beeper sounds cuntinuously, if the
resistance is less than 40V.
2.6 NCV Check (ACV only)
Indicates presence of voltage in an electrical circuit or equipment
without touching them.
1.
Set Range switch to the NCV Range.
2.
The NCV indicator flashing every 1-2 sec.
3.
When the clamp jaw near to the object under test it detected voltage.
The NCV LED is quickly flashing.
Detection against inwall outlet is possible.
l
In NCV range meter will be auto power off within 3 minutes,
l
if no signals is obtained
2.7 Temperature Measurment (27T-AUTO only)
1.
Set range switch to
0
C possition.
2.
Using function button select
3.
Connect the thermocouple "+, -" at VV and COM input terminals.
4.
Touch the end of temperature probe to the area or surface of the
object whose temperature is to be measured.
Certificate of Calibration
We hereby certify that this product has been calibrated and found
to be in accordance with the applicable SPECIFICATIONS and
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 : sales@mecoinst.com
Web : www.mecoinst.com
SR. NO.
:
CHECKED BY :
DATE
:
MODEL NO.
:
27-27T : 28-09-2012
/
range.
0
C or
0
F.
®
6
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