B+K precision MR Series User manual

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 acustomer’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 aRoman numeral of I, II, III, or IV. This rating is also

accompanied by amaximum 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 alimited-energy transformer or abattery.

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

to be connected to the mains supply at astandard 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 abuilding. Examples are measurements

inside abuilding'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 abuilding or other outdoor

wiring.

Do not use this instrument in an electrical environment with ahigher category rating

than what is specified in this manual for this instrument.

You must ensure that each accessory you use with this instrument has acategory

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 aCATEGORY II mains power

environment. The mains power should be 120 VRMS or 240 VRMS. Use only the

power cord supplied with the instrument and ensure it is appropriate for your country

of use.

Ground the Instrument

minimize shock

hazard

,the instrument chassis and cabinet must be connected to an electrical

safety ground. This instrument is grounded

throughthegroundconductorofthesupplied,three-

conductorACline

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 aproperly-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 asafety ground.

Do not operate in an explosive or flammable atmosphere

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 adanger 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 2environment.

The operating temperature range is 0°C to 40 °C and the operating humidity 90%

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,orifanyliquid,chemical,orother

materialgetsonorinside the instrument, remove the instrument's power cord, remove the

instrumentfrom service,label itasnotto beoperated,andreturn 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

Donotcleantheinstrument,itsswitches,oritsterminalswithcontact

cleaners, abrasives,

lubricants, solvents, acids/bases, or other such

chemicals.Cleantheinstrumentonlywitha

cleandrylint-freeclothor 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 acomponent in alife-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 aproperly-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 afault 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 asafety hazard, or

cause

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 arack, 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.

Use correctly sized wires

To connect aload to the power supply, use awire diameter large enough to handle

the maximum continuous output short-circuit current of the power supply without the

wire overheating.

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 ahot 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 aprobe is connected to acircuit being tested.

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 andotherwise observe all

applicable requirements.

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

UL 61010-1:2012

EMC Directive

EN 55011:2009+A2:2010

EN 61000-3-11: 2000

EN 61000-3-12: 2011

EN 61000-4-2 /-3 /-4 /-5 /-6 /-8 /-34

EN 61326-1: 2013

EN 61326-2-1: 2013

Safety Symbols

Refer to the user manual for warning information to avoid hazard or

personal injury and prevent damage to instrument.

Electric Shock hazard

On (Supply). This is the AC supply connect/disconnect switch on the

front of the instrument.

Off (Supply). This is the AC mains connect/disconnect switch on the

front of the instrument.

Direct current

Alternating current

Fuse Symbol

Chassis (earth ground) symbol

Ground terminal

Protective earth ground

CAUTION indicates ahazardous situation which, if not avoided, will

result in minor or moderate injury

WARNING indicates ahazardous situation which, if not avoided, could

result in death or serious injury

DANGER indicates ahazardous situation which, if not avoided, will

result in death or serious injury.

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