B+K precision 894 Manual de usuario

Models: 894, 895

500 kHz/1 MHz LCR Meter

USER MANUAL

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Safety Summary

The following safety precautions apply to both operating and maintenance personnel and must

be followed during all phases of operation, service, and repair of this instrument.

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.

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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.

Ground the Instrument

To minimize shock hazard, the instrument chassis and cabinet must be connected to an

electrical safety ground. This instrument is grounded through the ground conductor of the

supplied, three-conductor AC line power cable. The power cable must be plugged into an

approved three-conductor electrical outlet. The power jack and mating plug of the power cable

meet IEC safety standards.

Do not alter or defeat the ground connection. Without the safety ground connection, all

accessible conductive parts (including control knobs) may provide an electric shock. Failure to

use a properly-grounded approved outlet and the recommended three-conductor AC line power

cable may result in injury or death.

Unless otherwise stated, a ground connection on the instrument's front or rear panel is for a

reference of potential only and is not to be used as a safety ground.

Do not operate in an explosive or flammable atmosphere

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

divided particulates.

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.

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.

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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.

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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.

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.

Cooling fans

This instrument contains one or more cooling fans. For continued safe operation of the

instrument, the air inlet and exhaust openings for these fans must not be blocked nor must

accumulated dust or other debris be allowed to reduce air flow. Maintain at least 25 mm

clearance around the sides of the instrument that contain air inlet and exhaust ports. If

mounted in a rack, position power devices in the rack above the instrument to minimize

instrument heating while rack mounted. Do not continue to operate the instrument if you

cannot verify the fan is operating (note some fans may have intermittent duty cycles). Do not

insert any object into the fan's inlet or outlet.

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.

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Compliance Statements

Disposal of Old Electrical & Electronic Equipment (Applicable in the European

Union and other European countries with separate collection systems)

This product is subject to Directive 2002/96/EC of the European Parliament

and the Council of the European Union on waste electrical and electronic

equipment (WEEE), and in jurisdictions adopting that Directive, is marked as

being put on the market after August 13, 2005, and should not be disposed

of as unsorted municipal waste. Please utilize your local WEEE collection

facilities in the disposition of this product and otherwise observe all

applicable requirements.

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CE Declaration of Conformity

This instrument meets the requirements of 2006/95/EC Low Voltage Directive and

2004/108/EC Electromagnetic Compatibility Directive with the following standards.

Low Voltage Directive 2006/95/EC

EN 61010:2010

EN 61010-2-030:2010

EMC Directive 2004/108/EC

EN 61326-1:2013

EN 6100-3-2:2006+A1:2009+A2:2009

EN 61000-3-3:2008

(CISPR 11:2009+A1:2010

IEC 61000-4-2:2008

IEC 61000-4-3-:2006+A1:2007+A2:2010

IEC 61000-4-4:2012

IEC 61000-4-5:2005

IEC 61000-4-6:2008

IEC 61000-4-11:2004)

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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

On (Power). This is the In position of the power switch when

instrument is ON.

Off (Power). This is the Out position of the power switch when

instrument is OFF.

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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Contents

Product Overview........................................................................................................... 15

Package Contents ........................................................................................................... 15

Dimensions..................................................................................................................... 16

Front Panel Overview..................................................................................................... 17

Front Panel Description ................................................................................................. 17

Rear Panel Overview ...................................................................................................... 18

Rear Panel Description................................................................................................... 18

Display Overview............................................................................................................ 19

Display Description ........................................................................................................ 19

Input Power Requirements ............................................................................................ 20

Input Power.................................................................................................................... 20

Fuse Requirements ........................................................................................................ 20

Fuse Replacement.......................................................................................................... 21

Leakage current ............................................................................................................. 21

Preliminary Check........................................................................................................... 21

Safety Requirements ...................................................................................................... 21

Measurement Display Menu.......................................................................................... 23

Measurement Parameters.............................................................................................. 24

Primary Parameters ....................................................................................................... 24

Secondary Parameters................................................................................................... 25

Parameter Combinations............................................................................................... 25

Selecting Primary and Secondary Parameters............................................................... 26

Test range ...................................................................................................................... 29

Test frequency ............................................................................................................... 29

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