B+K precision 880 Manuale utente

Model 880

Dual Display LCR METER

INSTRUCTION MANUAL

Safety Summary

Before applying power to this instrument:

Read and understand the safety and operational information in this manual.

Apply all the listed safety precautions.

Verify that the voltage selector at the line power cord input is set to the correct line

voltage. Operating the instrument at an incorrect line voltage will void the warranty.

Make all connections to the instrument before applying power.

Do not operate the instrument in ways not specified by this manual or by B&K Precision.

Failure to comply with these precautions or with warnings elsewhere in this manual violates the

safety standards of design, manufacture, and intended use of the instrument. B&K Precision

assumes no liability for a customer’s failure to comply with these requirements.

Category rating

The IEC 61010 standard defines safety category ratings that specify the amount of electrical

energy available and the voltage impulses that may occur on electrical conductors associated

with these category ratings. The category rating is a Roman numeral of I, II, III, or IV. This rating

is also accompanied by a maximum voltage of the circuit to be tested, which defines the voltage

impulses expected and required insulation clearances. These categories are:

Category I (CAT I): Measurement instruments whose measurement inputs are not intended to

be connected to the mains supply. The voltages in the environment are typically derived from a

limited-energy transformer or a battery.

Category II (CAT II): Measurement instruments whose measurement inputs are meant to be

connected to the mains supply at a standard wall outlet or similar sources. Example

measurement environments are portable tools and household appliances.

Category III (CAT III): Measurement instruments whose measurement inputs are meant to be

connected to the mains installation of a building. Examples are measurements inside a

building's circuit breaker panel or the wiring of permanently-installed motors.

Category IV (CAT IV): Measurement instruments whose measurement inputs are meant to be

connected to the primary power entering a building or other outdoor wiring.

Do not use this instrument in an electrical environment with a higher category rating than what

is specified in this manual for this instrument.

You must ensure that each accessory you use with this instrument has a category rating equal

to or higher than the instrument's category rating to maintain the instrument's category rating.

Failure to do so will lower the category rating of the measuring system.

Electrical Power

This instrument is intended to be powered from a CATEGORY II mains power environment. The

mains power should be 115 V RMS or 230 V RMS. Use only the power cord supplied with the

instrument and ensure it is appropriate for your country of use.

If the instrument will not be used for a long period of time, remove the batteries.

When changing the instrument's batteries, disconnect all leads and wires connected to the

instrument before replacing the batteries. Replace with the battery types specified in this

manual.

Battery replacement

Remove all test leads from the instrument before replacing the batteries.

Do not operate in an explosive or flammable atmosphere

Do not operate the instrument in the presence of flammable gases or fumes. Operation of any

electrical instrument in such an environment constitutes a definite safety hazard.

The instrument is designed to be used in office-type indoor environments. Do not operate the

instrument

In the presence of noxious, corrosive, or flammable fumes, gases, vapors, chemicals, or

finely-divided particulates.

In relative humidity conditions outside the instrument's specifications.

In environments where there is a danger of any liquid being spilled on the instrument or

where any liquid can condense on the instrument.

In air temperatures exceeding the specified operating temperatures.

In atmospheric pressures outside the specified altitude limits or where the surrounding

gas is not air.

In environments with restricted cooling air flow, even if the air temperatures are within

specifications.

In direct sunlight.

Do not operate the instrument in the presence of flammable gases or vapors, fumes, or finely-

divided particulates.

This instrument is intended to be used in an indoor pollution degree 2 environment. The

operating temperature range is 0 °C to 40 °C and 20% to 80% relative humidity, with no

condensation allowed.

Measurements made by this instrument may be outside specifications if the instrument is

used in non-office-type environments. Such environments may include rapid temperature

or humidity changes, sunlight, vibration and/or mechanical shocks, acoustic noise, electrical

noise, strong electric fields, or strong magnetic fields.

Do not operate instrument if damaged

If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other

material gets on or inside the instrument, remove the instrument's power cord, remove the

instrument from service, label it as not to be operated, and return the instrument to B&K

Precision for repair. Notify B&K Precision of the nature of any contamination of the instrument.

Clean the instrument only as instructed

Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives,

lubricants, solvents, acids/bases, or other such chemicals. Clean the instrument only with a

clean dry lint-free cloth or as instructed in this manual.

Not for critical applications

This instrument is not authorized for use in contact with the human body or for use as a

component in a life-support device or system.

Do not touch live circuits

Instrument covers must not be removed by operating personnel. Component replacement and

internal adjustments must be made by qualified service-trained maintenance personnel who

are aware of the hazards involved when the instrument's covers and shields are removed.

Under certain conditions, even with the power cord removed, dangerous voltages may exist

when the covers are removed. To avoid injuries, always disconnect the power cord from the

instrument, disconnect all other connections (for example, test leads, computer interface

cables, etc.), discharge all circuits, and verify there are no hazardous voltages present on any

conductors by measurements with a properly-operating voltage-sensing device before touching

any internal parts. Verify the voltage-sensing device is working properly before and after

making the measurements by testing with known-operating voltage sources and test for both

DC and AC voltages. Do not attempt any service or adjustment unless another person capable

of rendering first aid and resuscitation is present.

Do not insert any object into an instrument's ventilation openings or other openings.

Hazardous voltages may be present in unexpected locations in circuitry being tested when a

fault condition in the circuit exists.

Fuse replacement

Fuse replacement must be done by qualified service-trained maintenance personnel who are

aware of the instrument's fuse requirements and safe replacement procedures. Disconnect the

instrument from the power line before replacing fuses. Replace fuses only with new fuses of

the fuse types, voltage ratings, and current ratings specified in this manual or on the back of the

instrument. Failure to do so may damage the instrument, lead to a safety hazard, or cause a

fire. Failure to use the specified fuses will void the warranty.

The replacement of current-measurement mode protection fuses in multimeters is especially

important. These fuses must be replaced with fuses that are of the proper type, manufacturer,

and rating as specified in this manual to maintain the safety category rating of the instrument.

Servicing

Do not substitute parts that are not approved by B&K Precision or modify this instrument.

Return the instrument to B&K Precision for service and repair to ensure that safety and

performance features are maintained.

It is recommended that the instrument be returned to B&K Precision for service and periodic

calibration to ensure the instrument is performing within its specifications

Do not substitute parts or modify the instrument

Do not install substitute parts or perform any unauthorized modifications to this instrument.

Return the instrument to B&K Precision for service and repair to ensure that safety features are

maintained.

ESD sensitivity

This product uses components which can be damaged by electrostatic discharge (ESD). To

avoid damage, follow proper procedures for handling, storing and transporting parts and

subassemblies which contain ESD-sensitive components.

Resistance measurements

Measurement of DC resistance in circuits that contain small DC biases (for example,

thermoelectric voltages) can produce incorrect results. To minimize the effect of such biases,

measure the DC resistance with normal and reversed test lead polarity and algebraically

average the results, even if one of the measurements results in a negative resistance.

Shipment

It is recommended that you retain the original packing that the instrument was shipped in. This

will allow you to return it to B&K Precision if needed. If the original packing is not available, use

substitute packaging with at least the same protection and cushioning of the original packaging.

Contact B&K Precision for shipping advice if you're unsure of how to ship the instrument.

Safety Guidelines

To ensure that you use this device safely, follow the safety guidelines listed

below:

This meter is for indoor use, altitude up to 2,000 m.

The warnings and precautions should be read and well understood before

the instrument is used.

When measuring in-circuit components, first de-energize the circuits before

connecting to the test leads.

Discharge capacitor before testing.

The meter is safety-certified in compliance with EN61010 (IEC 1010-1)

Installation Category II (CAT. II) 50 V, Pollution Degree 2 environment.

Use the meter only as specified in this manual. Otherwise, the protection

provided by the meter may be impaired.

The power for the meter is supplied with a single standard 9V battery. But

also a line operation is possible using a 12V AC to DC adapter. If a power

adapter is selected, please be sure it fulfills the safety requirements of a

relevant IEC standard.

Other safety considerations

For continued safe use of the instrument

Do not place heavy objects on the instrument.

Do not obstruct cooling air flow to the instrument.

Do not place a hot soldering iron on the instrument.

Do not pull the instrument with the power cord, connected probe, or

connected test lead.

Do not move the instrument when a probe is connected to a circuit being

tested.

Safety Symbols

Refer to the user manual for warning

information to avoid hazard or personal

injury and prevent damage to

instrument.

Electric Shock hazard

Alternating current (AC)

Chassis (earth ground) symbol.

Ground terminal

DC Current

Indicates inside pin is positive (+),

outside is negative (-)

CAUTION indicates a hazardous

situation which, if not avoided, will

result in minor or moderate injury

WARNING indicates a hazardous

situation which, if not avoided, could

result in death or serious injury

DANGER indicates a hazardous situation

which, if not avoided, will result in death

or serious injury.

NOTICE is used to address practices not

related to physical injury.

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