Hioki SM-8216 Manual de usuario

SUPER MEGOHMMETER

Instruction Manual

SM-8216

November 2010 Revised edition 2 SM8216A981-02 10-11H

WARNING

A “WARNING” CALLS ATTENTION TO A CONDITION OR POSSIBLE

SITUATION THAT COULD CAUSE DEATH OR INJURY TO THE

OPERATOR OR NEARBY PESRONS.

DANGER

A “DANGER” CALLS ATTENTION TO A CONDITION OR POSSIBLE

SITUATION THAT CAN CAUSE DEATH OR INJURY TO THE OPERATOR

OR NEARBY PERSONS.

CAUTION

A “CAUTION” calls attention to a condition or possible situation that

could cause injury to the operator or persons nearby and damage and

destroy the super megohmmeter and samples.

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.

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.

iii

Symbol Meaning Description

1.2 Symbols on the Super Megohmmeter

Safety Warning Labels on the Super Megohmmeter

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.

WARNING

DANGER

端子より高電圧発生の為、

感電の恐れあり。

HIGH VOLTAGE

危険

高電圧危険

Electric shock hazard!

Terminals carry high voltage.

)

DANGER and WARNING Labels on the Rear Panel

)

DANGER and WARNING Labels on the Housing and Front

2. Operating Environmental Precautions

DANGER

■ Do not operate the super megohmmeter in the presence of flammable gas.

There is s possibility of an explosion and/or fire.

■ Do not touch the Rx ‘–‘/’+’ measuring terminals on the front panel of the

SM-8216 during measurement. They output a maximum measuring

voltage of 1000 V.

WARNING

■ Ground the ground prong of the power cord plug to avoid electrical shock.

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.

■Do not remove the housing cover of the instrument. Even after turning off the

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.

3. Installation Precaution

4. Instrument Handling Precautions

CAUTION

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.

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.

■Do not operate the instrument with a wet hand. This may cause

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.

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:

5.0×10

to 2×10



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:

5.0×10

to 2×10

Ω,6 ranges



Voltage Charging Function: Provided

Voltage Discharging Function: Provided

HV-EN (High Voltage Enable) Interlocking Function: Provided

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

vii

Organization of This Operation Manual

This operation manual contains the following 9 sections.

1. PREPARATION BEFORE

OPERATION

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.

6. MEASUREMENT

This section provides details for function setting, connection to the sample

to be measured in a variety of insulation resistance measurement.

OPTINAL ACCESSOIRIES

This section describes the optional accessories, including guard chip,

DC signal outputs, and others.

MAINTENANCE AND MISCELANEOUS

This section describes maintenance, storage, transportation and abandon

of old instrument.

EXTERNAL APPEARANCE

This section includes front, rear and side view illustrations of the

instrument with dimensions.

viii

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