Instruction Manual
SM-8216
SUPER MEGOHMMETER
November 2010 Revised edition 2 SM8216A981-02 10-11H
1. Safety Precautions
Operators of the SM-8216 super megohmmeter are requested to read this
operation manual thoroughly before operation for safety and to obtain best
performance.
Operators are also requested to strictly observe all the DANGER, WARNING,
and CAUTION notices in this manual and on the instrument to prevent injury
and damage.
1-1 Safety Warnings
This operation manual includes some DANGER!, WARNING!, and CAUTION!
notice with a symbol. These must be observed for safety of the operator and
other persons, as well as for protection of your super megohmmeter and
samples from possible damage and destruction.
DANGER
A “DANGER” CALLS ATTENTION TO A CONDITION OR POSSIBLE
SITUATION THAT CAN CAUSE DEATH OR INJURY TO THE OPERATOR
OR NEARBY PERSONS.
WARNING
A “WARNING” CALLS ATTENTION TO A CONDITION OR POSSIBLE
SITUATION THAT COULD CAUSE DEATH OR INJURY TO THE
OPERATOR OR NEARBY PESRONS.
destroy the super megohmmeter and samples.
CAUTION
A “CAUTION” calls attention to a condition or possible situation that
could cause injury to the operator or persons nearby and damage and
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Congratulations on your purchase of a HIOKI SM-8216 super megohmemeter.
The super megohmmeter is a unique analog resistance meter designed to
measure high resistance in a wide range.
The MS-8216 meter outputs a high test voltage – 1000 V maximum to apply
across the sample circuit.
Operators are requested to read this operation manual thoroughly before trying
to operate the instrument for safety and to prevent electrical shock and damage
to the circuit to measure.
Keep this manual where all staff can access it any time.
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T
T
1.2 Symbols on the Super Megohmmeter
Symbol Meaning Description
WARNING
his symbol is shown at pats whose
usage needs reference to the operation
manual.
DANGER –
HIGH VOLTAGE
HAZARD
his symbol is shown at the Rx ‘–‘/’+’
Measuring terminals which carry a
high voltage to be applied across the
circuit to be measured.
Safety Warning Labels on the Super Megohmmeter
1) DANGER and WARNING Labels on the Housing and Front
危険
DANGER
高電圧危険
端子より高電圧発生の為、
感電の恐れあり。
HIGH VOLTAGE
Terminals carry high voltage.
Electric shock hazard!
2) DANGER and WARNING Labels on the Rear Panel
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2. Operating Environmental Precautions
■ Do not operate the super megohmmeter in the presence of flammable gas.
■ Do not touch the Rx ‘–‘/’+’ measuring terminals on the front panel of the
DANGER
There is s possibility of an explosion and/or fire.
SM-8216 during measurement. They output a maximum measuring
voltage of 1000 V.
■ Ground the ground prong of the power cord plug to avoid electrical shock.
■ Do not remove the housing cover of the instrument. Even after turning off the
WARNING
If the ground prong cannot be grounded, connect the GND terminal on the
rear of the instrument to a ground. When the power cord plug is connected
to the AC line socket via an accessory 3-prong to 2-prong adapter, the
green ground tab of the adapter to the ground.
instrument power switch, a dangerous residual voltage may be present for
several minutes after the power is turned off. If repair or internal
readjustment is needed, contact your local HIOKI Electronics distributor.
CAUTION
■ Before turning on the power switch for the instrument, check
that the LINE SELECTOR switches are set for your local AC line
voltage. If the wrong AC line voltage is applied to the unit, it will
be damaged (higher voltage supply) or will not function properly
(lower voltage supply). See 1.3 Setting LINE SELECTOR Switches
for switch setting. Use the right size and amperage power fuse. If a fuse
of incorrectamperage is inserted into the fuse holder, the unit will be
damaged. See 1.4 Checking the Fuse Amperage for a correct fuse
amperage.
■
Do not install or operate the super meghommeter in a placewhere
affected by dust, shock and vibration, direct sunshine, steam, heat
generating facilities, air conditioning draft, etc. These can cause a
failure with the instrument.
is
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3. Installation Precaution
Do not install or place the super megohmmeter in a location which is
not level, not stable or not sturdy enough to hold the instrument and
other related items.
CAUTION
4. Instrument Handling Precautions
■
■Do not operate the instrument with a wet hand. This may cause
WARNING
If the instrument generates smoke or smell, unplug the power cord. If
such an instrument is kept powered on, it may cause a fire. Contact
your local HIOKI Electronics distributor for repair.
electrical shock.
CAUTION
■
■ When moving or transporting the super megohmmeter, avoid
shockand vibration as much as possible. For long-distance
transportation, put the instrument in a shock-absorbing carton or
use the originalshipping carton.
■
When not using the super megohmmeter for an extended period
oftime, unplug the power cord from the AC line socket. Put a
dustcover on the instrument. Store it in a place free of corrosive gas
andvibration, with a surrounding temperature within the range
from –5 to 45℃, and humidity 80% RH or less(non-condensating).
■ Do not place anything on the instrument.
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BRIEF DESCRIPTION
About the SM-8216 Super Megohmmeters
The SM-8216 super megohmmeter is insulation resistance meters consisting
of a constant voltage power supply and a high sensitive current measuring
section. The super megohmmeter is designed to measure the electrical
resistance of insulating materials with high insulation properties.
The resistance measuring ranges of the SM-8216 is as follows:
5.0×104 to 2×1013Ω
The SM-8216 super megohmmeters is provided with a large analog meter for
easy reading of a measured insulation resistance.
The following shows the main specifications for the SM-8216.
For detailed specifications, see 2. SPECIFICATIONS.
For optional accessories, see 7. OPTIONAL ACCESSORIES.
Main Specifications – For detailed specifications, see 2. SPECIFICATIONS.
For optional accessories, see 7. OPTIONAL ACCESSORIES.
Measuring Voltage Ranges:
10, 25, 50, 100, 250, 500 and 1000 V
Measuring Resistance Ranges:
Voltage Charging Function: Provided
Voltage Discharging Function: Provided
HV-EN (High Voltage Enable) Interlocking Function: Provided
5.0×104 to 2×1013Ω,6 ranges
DC Signal Output Function: Optionally available on factory installation basis
Either one of 1/R output or proportional to resistance value output can
be optionally incorporated in a single SM-8216 unit.
Alarm Function: Optionally available on factory installation basis
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Organization of This Operation Manual
This operation manual contains the following 9 sections.
1. PREPARATION BEFORE
This section describes precautions for unpacking and AC line voltage
setting.
2. SPECIFICATIONS
This section describes the specifications for the SM-8216 super meg-
ohmmeters and optional accessories.
3. OPERATING PRINCIPLE
This section describes the operating principle with a block diagram of
the SM-8216.
4. FAMILIARIZATION WITH CONTROLS AND PARTS
This section describes the functions of the controls and parts on the front
and rear panels.
5. PREPARATION FOR MEASUREMENT
This section describes the measuring mode, and setting mode before
operation.
OPERATION
6. MEASUREMENT
This section provides details for function setting, connection to the sample
to be measured in a variety of insulation resistance measurement.
7.
OPTINAL ACCESSOIRIES
This section describes the optional accessories, including guard chip,
DC signal outputs, and others.
8.
MAINTENANCE AND MISCELANEOUS
This section describes maintenance, storage, transportation and abandon
of old instrument.
EXTERNAL APPEARANCE
9.
This section includes front, rear and side view illustrations of the
instrument with dimensions.
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viii
CONTENTS
1. PREPARATION BEFORE OPERATION . . . . . . . . . . . . . . . . . . . . . . . １１１１
1.1 Unpacking and Checking of the Contents . . . . . . . . . . . . . . .
1.2 Operating AC Line Voltage . . . . . . . . . . . . . . . . . . . . . . . . .
1.3 Setting the LINE SELECTOR Switches . . . . . . . . . . . . . .
1.4 Checking the Fuse Amperage . . . . . . . . . . . . . . . . . . . . . . .
1.5 Grounding the Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.6 Warm-up Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . .２２２２
. . . . .１１１１
. . . . . ２２２２
. . . . . ３３３３
. . . . .４４４４
. . . . .５５５５
2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .６６６６
2.1 Measuring Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Function Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.3 Other Electrical and Physical Data. . . . . . . . . . . . . . . . . . . . .
2.4 Optional Functions and Accessories. . . . . . . . . . . . . . . . . . . .
. . . . ６６６６
. . . .６６６６
. . . .６６６６
. . . .７７７７
3. OPERATING PRINCIPLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ９９９９
4. FAMILIARIZATION WITH CONTROLS AND PARTS . . . . . . . . . . . . .１０
4.1 Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
１０
１０１０
１０
１０
１０１０
4.2 Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . .１３
１３
１３１３
5. PREPARATION FOR A MEASUREMENT . . . . . . . . . . . . . . . . . . . . .１５
１５
１５１５
6. MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .１８
6.1 Measuring Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 Usage of the MEAURE/CHARGE/DISCHARGE . . . . . . . . . . . . . . . .
6.3 Interlocking Function−−−−Using the HV-EN Connector . . . . . . . . . .
6.4 Calibration Function . . . . . . . . . . . . . . . . . . . . . . .
6.5 Changes in the Current Flowing through an Insulator . . . . . . . . . .
. . . . . . . . . ２２
１８
１８１８
.１８
１８
１８１８
２０
２０
２０２０
２１
２１
２１２１
２２
２２２２
２３
２３
２３２３
7. OPTINAL ACCESSOIRIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .２５
7.1 DC Signal Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1.1 DC Output, RP-8000
– Directly proportional or linear to resistance . . . . . . .
7.1.2 DC Output, RI-8000
– Inversely proportional or 1/R to resistance . . . . . .
. . . . .２７
２５
２５２５
２５
２５
２５２５
. . .２５
２５
２５２５
２７
２７２７
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8. MAINTENANCE AND MISCELANEOUS . . . . . . . . . . . . . . . . . . . . . .２９
２９
２９２９
8.1 Periodical Checking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Storage, Transportation and Abandon . . . . . . . . . . . . . . . . . . . .
9. EXTERNAL APPEARANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .３０
. . . ２９
２９
２９２９
.２９
２９
２９２９
３０
３０３０
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1. PREPARATION BEFORE OPERATION
1.1 Unpacking and Checking of the Contents
When you have received the carton of the SM-8216 super megohmmeter,
carefully unpack it, and take out every thing from the carton.
Although the instrument and its accessories are severely inspected before
shipment from factory, visually check the items and their quantities.
Keep the shipping carton for reuse at a later time.
1) Visually check the external view of the instrument and its accessories.
2) Check the quantities of the list in accordance with the following list:
Item Reference No. Q’ty Remarks
Operation manual
Power cord
Measuring rod
(Red)
Measuring rod
(Black)
Shorting plug
When plugging the shorting plug, make sure that the power is turned
off, otherwise, there is an electric shock hazard.
CAUTION
Table 1.1.1 List of Standard Accessories
−
−
0GE00002 1 A measuring rod with a 1-
0GE00001 1 A measuring rod with a 1-
−
1 This item means this booklet.
1 Power cord with 3-prong plug
with third for grounding
meter cord to be connected to
the Rx ‘‑’ measuring terminal.
meter cord to be connected to
the Rx ‘+’ measuring terminal.
1 A plug to be plugged to the
HV-EN connector on the rear of
the instrument. It is plugged
to the HV-EN connector when
shipping from factory.
Upon checking the instrument and accessories, if any damage is found,
immediately contact the forwarder or your local HIOKI distributor.
Upon checking the instrument and accessories, if any shortage is found,
immediately contact your local HIOKI distributor or directly HIOKI E.E.
CORPORATION .
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1.2 Operating AC Line Voltage
The super megohmemeter can be operated from one of the following AC
power source when the LINE SELECTOR switches are set accordingly.
AC Line Voltage
100 V ±10% 50/60 Hz
120 V ±10% 50/60 Hz
220 V ±10% 50/60 Hz
240 V +10V,‑10% 50/60 Hz
CAUTION
1.3 Setting the LINE SELECTOR Switches
The super megohmmeter can be operated from one of the AC line voltages of
100 V, 120 V, 220 V and 240 V by setting the LINE ELECTOR switches to
the specific positions, respectively.
Confirm the switch setting to the specific positions in accordance with Fig.
Before connecting the power cord to the AC outlet socket, confirm that
the LINE SELECTOR switches on the rear panel are set to the
positions, accordingly (See 1.3 Setting the LINE SELECTOR
Switches.).
Frequency
1.1.1. If they are not set properly, correct their positions, accordingly.
To change the position of the switch, insert the tip of a flat
blade screwdriver into the slot of the switch lever, and slide the
leverupward or downward.
CAUTION
To change the LINE SELECTOR switch positions, unplug the power
cord plug from the AC line socket to prevent a possible damage.
When the switch position is changed while the voltage is on, the
switch contacts will be damaged.
CAUTION
The LINE SELECTOR switches have two positions – up and down.
Slide the switch lever to either position until it stops.
Do not leave the lever at a neutral position. If the lever is set at
A neutral position, a normal function cannot be obtained, and
it will cause a failure.
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