Sanwa MG1000, Инструкции, Страница: 2 / 2

4-2-2 Voltage measurement function (AC/DCV)
Range Resolution Accuracy Input Resistance Max. Overload Protection
AC/DC 600V 1V ± (3%rdg+2dgt) 9M Ω 780Vrms
Note
ACV and DCV are automatically detected.
Sensitivity: 2 V or higher.
AC frequency bandwidth: 45-400 Hz
The ALAMP indicator lights up when the input is
≧ 30 V AC/DC.
“ ” appears and buzzer sounds if the input is ≧ 600 Vrms.
Maximum display value: 780 V.
4-2-3 4000 Ω measurement function / Continuity buzzer ( Ω )
Range Resolution Accuracy Input Resistance Max. Overload Protection
4000 Ω 1 Ω ± (3%rdg+3dgt) ≥ 3V 600Vrms
Note
A buzzer sounds below about 40
Ω .
A buzzer sounds and the ALARM indicator lights up when the input is ≧ 30 V
AC/DC.
4-2-4 40 Ω measurement function ( Ω )
Display Range 40.00 Ω
Measurement range 0.01 Ω to 40.00 Ω
Accuracy ± (3% + 10 dgt) (after 0 Ω ADJ)
Resolution 0.01 Ω
Open Circuit voltage 6V (typical value)
Short-circuit current 200 mA minimum ( ≤ 2.0 Ω )
Protection Fuse (0.5 A/600 V)
Note
The bargraph display is disabled.
[5] MEASURING PROCEDURE
5-1 Opening/closing the body cover
The body cover cannot be closed unless
the function switch is OFF.
5-2 Start-up inspection
5-3 Voltage measurement method
Note
ACV and DCV are automatically
detected.
5-4 Insulation resistance measurement method
5-4-1 Buttons used in the measurement
Measurement: MEASURE button, 0
Ω
ADJ button (to set the max test voltage function)
Continuous measurement: LOCK and MEASURE buttons.
5-4-2 Measurement method
1. Connect the test leads to the object (circuit) to be measured.
If the object to be measured is a live circuit ( ≧ 30 V AC/DC), the voltage is
displayed, buzzer sounds, and the ALARM indicator lights up. In this case, the
test voltage cannot be output by pressing the MEASURE or LOCK button.
Disconnect the power supply from the object to be measured and try again.
2. Output the test voltage.
Start measurement ( MEASURE button) Continuous measurement ( LOCK button)
3. End the measurement. 3. End of continuous measurement
At the moment the test voltage output is stopped, the last displayed value is held
automatically ( indication) and the measured object (circuit) is discharged
automatically.
When the measured object (circuit) is discharged below 30 V, the indicator
goes off.
Note
1. An oscillation tone may be heard during measurement, but this is not malfunction.
2. The automatically held value is retained until the start of the next measurement
or the tester enters APS mode. The held value is released and the new
measurement value is displayed when the next measurement is started.
3. If a measuring point of certain equipment for insulation resistance measurement is
unknown, contact the manufacturer of that equipment to ensure correct measurement.
5-5 4000 Ω Resistance measurement / Continuity check method
5-5-1 Buttons used in measurement
No button is used.
5-5-2 Measurement method
1. Set the power/function switch to “4000 Ω .”
2. Connect the test lead to the object to be measured.
3. Read the displayed value.
5-6 40 Ω measurement method
5-6-1 Buttons used in measurement
Measurement: MEASURE button and 0 Ω ADJ button.
Continuous measurement: LOCK button, 0 Ω ADJ and MEASURE button.
5-6-2 Measurement methods
Method using the MEASURE button:
1. Set the function switch to “40.00 Ω .”
2. Short-circuit the test leads, press the MEASURE button, and release the
MEASURE button when the tester detects a stable reading. The displayed
value will be held.
3. Press the 0
Ω
ADJ button to reset the displayed value to “0.00
Ω
.” [0
Ω
ADJ]
should light up at this time.
4. Connect the test leads to the object to be measured, and press the
MEASURE button.
5. To end measurement, release the MEASURE button. The last displayed
value will be held automatically.
Method using the LOCK button:
1. Set the function switch to “40.00 Ω .”
2. Short-circuit the test leads and press the LOCK button.
3. When the tester detects a stable reading, press the 0
Ω
ADJ button to reset
the displayed value to “0.00 Ω .” [0 Ω ADJ] should light up at this time.
4. Connect the test leads to the object to be measured and read the displayed value.
5. To end measurement, press the MEASURE or LOCK button. The last
displayed value will be held automatically.
Caution: The measurement consumes a large amount of current. Use caution
with the battery exhaustion.
The displayed value may not become “0.00” depending on the
contact condition while shorting the test leads.
[6] MAINTENANCE
6-1 Maintenance inspection
1) Appearance: Is the meter not damaged due to falling or other cause?
2) Test leads: Are the test leads not damaged, or is the core wire not exposed
from any part or broken?
If any of the above problems exists, stop using the meter and request for repair.
6-2 Calibration / Inspection
For more information, please contact your dealer or Sanwa agent.
6-3 Storage
Check if the instrument body appears damaged.
Check if appears on the top right of the LCD. If
appears or blinking, replace all batteries with new ones (see
section 6-4-1).
Select the 4000 Ω measurement function, short the test lead
and alligator clip, and ensure the displayed value is no more
than 1
Ω . If “OL” is displayed, replace the test leads as they may
be damaged.
Select the 40 Ω measurement function, short the test lead and
alligator clip, and ensure the displayed value is no more than
0.05
Ω . If “OL” is displayed, replace the fuse as it may be
damaged (see section 6-4-2).
Inspection/ Check
Appearance
Internal batteries
Test leads
Fuse
Method
The test voltage is output when the MEASURE
button is held pressed. appears and short
buzzer sounds during this operation.
Press and hold the LOCK button for more than
2 seconds to output the test voltage
continuously. and appears and short
buzzer sounds during this operation.
6-4 Battery / Fuse replacement
Battery when the meter is shipped:
A battery for monitoring has been installed prior to shipment from the factory. It
may be discharged before the expiration of the described battery life.
*The battery for monitoring is a battery used to check the functions and
performance of the product.
6-4-1 Battery replacement: R6 1.5V x 6pcs (MG125, MG500) ; LR6 1.5V x 6pcs (MG1000)
Note: Use caution with battery polarity when replacing batteries.
6-4-2 Fuse replacement
Fuse: Part No. F1202, Ø6 X 30 mm, 0.5 A/600 V, breaking capacity 20 kA.
[7] AFTER-SALE SERVICE
7-1 Warranty and Provision
Sanwa offers comprehensive warranty services to its end-users and to its product
resellers. Under Sanwa's general warranty policy, each instrument is warranted to
be free from defects in workmanship or material under normal use for the period of
one (1) year from the date of purchase.
This warranty policy is valid within the country of purchase only, and applied only to
the product purchased from Sanwa authorized agent or distributor.
Sanwa reserves the right to inspect all warranty claims to determine the extent to which
the warranty policy shall apply. This warranty shall not apply to disposables batteries, or
any product or parts, which have been subject to one of the following causes:
1. A failure due to improper handling or use that deviates from the instruction
manual.
2. A failure due to inadequate repair or modification by people other than Sanwa
service personnel.
3. A failure due to causes not attributable to this product such as fire, flood and
other natural disaster.
4. Non-operation due to a discharged battery.
5. A failure or damage due to transportation, relocation or dropping after the
purchase.
7-2 Repair
Customers are asked to provide the following information when requesting services:
1. Customer name, address, and contact information
2. Description of problem
3. Description of product configuration
4. Model Number
5. Product Serial Number
6. Proof of Date-of-Purchase
7. Where you purchased the product
Please contact Sanwa authorized agent / distributor / service provider, listed in
our website, in your country with above information. An instrument sent to Sanwa
/ agent / distributor without above information will be returned to the customer.
Note:
1) Prior to requesting repair, please check the following:
Capacity of the built-in battery, polarity of installation and discontinuity of the test leads.
2) Repair during the warranty period:
The failed meter will be repaired in accordance with the conditions stipulated in
7-1 Warranty and Provision.
3) Repair after the warranty period has expired:
In some cases, repair and transportation cost may become higher than the price of
the product. Please contact Sanwa authorized agent / service provider in advance.
The minimum retention period of service functional parts is 6 years after the discontinuation
of manufacture. This retention period is the repair warranty period. Please note, however, if
such functional parts become unavailable for reasons of discontinuation of manufacture,
etc., the retention period may become shorter accordingly.
4) Precautions when sending the product to be repaired To ensure the safety of the
product during transportation, place the product in a box that is larger than the
product 5 times or more in volume and fill cushion materials fully and then clearly
mark “Repair Product Enclosed” on the box surface. The cost of sending and
returning the product shall be borne by the customer.
7-3 SANWA web site
http://www.sanwa-meter.co.jp/
E-mail: exp_sales@sanwa-meter.co.jp
Release the MEASURE button to stop
outputting the test voltage.
Press the MEASURE or LOCK button to
stop outputting the test voltage.
WARNING
1. Be sure to conduct the start-up inspection described in section 5-2 below.
2. Before measurement, disconnect power supply from the object (circuit) to
be measured.
3. After measurement, be sure to discharge the high voltage charged in the
measured object.
4. During measurement, keep your fingers behind the finger guards of the test
leads and do not touch the metallic part of the alligator clips.
5. After measurement, be sure to turn the power/function switch to “OFF”
position to prevent electric shock and battery exhaustion.
CAUTION
1. When selecting the maximum test voltage (insulation resistance
measurement), hold the 0 _ ADJ button pressed while turning the
power/function switch. Otherwise, the display shows “Err0” and the test
voltage will not be output even if the MEASURE or LOCK button is pressed.
2. When the object to be measured is grounded, usually the alligator clip is
connected to the ground (EARTH) and the test lead to the measured circuit
(LINE). (This connection method usually results in a lower measurement
value than the opposite connection method.)
3. To prevent measurement errors, prevent the test lead connected to the
LINE terminal from touching the object to be measured or ground whenever
possible.
4. The insulation resistance varied greatly depending on the temperature and
humidity as well as on the output voltage (test voltage). In general, higher
temperature, humidity and/or output voltage mean lower insulation
resistance.
5. Measurement is inhibited if voltage ( ≧ 30 V AC/DC) is present in the circuit.
6. Keep in mind that the time of auto discharge will be delayed if fuse has
broken.
WARNING
1. The following instructions are very important for safety. Read this manual
thoroughly to ensure correct maintenance.
2. Calibrate and inspect the meter at least once a year to ensure safety and
maintain its accuracy.
CAUTION
1. The panel and case are not resistant to volatile solvent and must not be
cleaned with thinner or alcohol.
2. The panel and case are not resistant to heat. Do not place the tester near
heat-generating devices.
3. Do not store the tester in a place where it may be subjected to vibration or
from where it may fall.
4. Do not store the tester in places under direct sunlight, or hot, cold or humid
places or places where condensation is anticipated.
5. If the tester will not be used for a long time, remove the battery.
WARNING
1. If the rear case is removed with an input being applied to the measuring
terminals, you may suffer electric shock. Before starting replacement,
always make sure no input is being applied and the function switch is OFF.
2. Be sure to use the fuse of the specified rating and specification. Never use
a substitute nor short the fuse terminals.
Spare fuse
(optionally available)
Short beeps
GND
In case of Live circuit
OFF
Green
indication
ON/blinking
Red indicator ON
Hold for
more than
2 sec. and
then release.
Beep
Grounding
side
(EARTH)
Line side
(LINE)
Release
Red
indicator
ON
Buttons used
MΩ
MΩ
MΩ MΩ
MΩ
MΩ
Short beeps
Green
indication
ON/blinking
Press
Press here
or
here.
No.0436-002AB