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Product Data

Brel & Kjr B K7/6-'89

Integrating Vibration Meters Types 2513 and 2516

USES:

r Measurement of machine condition for maintenance

purposes

r Vibration Severity measurements of rotating and

reciprocating machinery

r Production quality control

r Occupational health investigations of powered

hand-tools

r Vibration and shock testing

r General vibration measurements for design,

research and development work

FEATURES:

r Choice of measurement units SI with 2513, gs

and in/s with 2516

r Robust, slim-line construction

r AC output for use with recorder, analyzer etc.

r Compact pre-calibrated Piezoelectric

Accelerometer, with robust connection-cable,supplied

r True Peak, Max-Peak, RMS or RMS-Max. indicationof vibration acceleration or velocity

r Vibration acceleration ranges cover 1 to 1000m/s2(2513), 0.1 to 100g (2516)

r Vibration velocity ranges cover 0,1 to 100mm/s(2513), 0.01 to 10 in/s (2516)

r Electronic integration of measurement for Leqdisplay (equivalent-energy level) selectable

r Solid-state thermometer-type read-out covers 100:1range

rMeasures Hand-Arm vibration (to ISO/DP 5349 withCharge Attenuator available to order or alternativeAccelerometer), Vibration Severity (to ISO 2954), orwide-band vibration 10Hz to 10kHz

r Low-energy circuits for long battery life

The Types 2513 and 2516 Int egra t-ing Vibration Meters have been devel-oped to meet the needs of the user whorequires an economical yet accurate in-strument for day-to-day vibrationmeasurements. Compact and l ightenough to be carried in the DocumentFolder supplied, they incorporate sev-eral advanced features which enablethem to be used easily by busy person-nel for whom mechanical vibrationmeasurement is only one of many ac-tivities. The 2513 is graduated in met-ric unit s, a nd t he 2516 in gs and in /s.

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amplitudes are logari thmically

spaced, giving a constant accuracyover the whole range. The LEDs,

however, are equally spaced, so each

successive LED corresponds to an

amplitude 11% greater t han the one

below. If the amplitude measuredfal ls between two LEDs, they both

light giving a resolut ion of 6%.

The display range itself can beswitched between tw o sett ings dif fer-

ing in level by a factor of 10, giving

an overall measurement range of1000:1. The main graduation levels

are fram ed in windows , and change

automatical ly with function sett ing.A decibel (dB) scale is provided inaddition to the engineering-units

scale.The L eq(Eq uivalent Level) facili-

ty on the 2513 and 2516 takes the

vagueness out of vibration measure-ment when the level is fluctuating.

In this mode of operation, the 1

minute L eq is computed by mathe-

mat ical integra tion from all the meansquare levels occurring since the

measurement started (hence the

nam e Integra ting Vibration Meter).

The sta nda rd instrum ents compute aone-minute Leq, but the 2513/

WH 2258 comput es a 10 s Leq. A

steady f igure for the vibration meas-

urement is obtained, that is repeata-

ble.When the L eqfunction is selected,

the display simultaneously indicates

the maximum peak value. There isno ambiguity because ma ximum peak

values can never be less than L eqval-

ues (Fig.3). The displa y fla shes unt il

measurement is complete and is thenheld unti l 2 minutes af ter the last

Reset (or 2.5 minutes with the

The Types 2513 a nd 2516 ar e com-

pact battery-powered instruments

easily held a nd opera ted in one hand.

The 2513 measures in SI units, and

t he 2516 in gs a nd in/s. A documen t

folder designed to contain both the

Vibration Meter and an A4 note-pad

for recording mea surements t a ken on

site is also included (Fig.1). Each Vi-

bration Meter is supplied with a

light -w eight P iezoelectric Accelerom-eter, connected by a 1,2m coaxial ca-

ble (see Fig.2).

Display

The 2513 and 2516 feature a solid-

state thermometer-type display

which ma kes them especial ly easy to

use without sacrificing accuracy. It

consists of 41 red light-emitting di-

odes (LEDs) covering a relative am-

plitude range of 1to100. The

Fig.1 Docum entat i on of measur ements

taken on site with the Vibr at ion M eter i n

it s folder

Fi g.2 In terconnection arrangements for

the 2513 and 2516

2513/WH 2258), t hen th e in st rum ent

switches off to save batteries.The display can also be set to read

running peak levels only, with 1s de-

cay-time constant, and RMS values,

with a 1s t ime constant. Either in-

stantaneous or maximum RMS indi-

cation may be selected.All the display functions are avail-

able with a choice of indication of vi-

The 2513 and 2516 are intended forfour main kinds of application

General vibration measure-ments. Vibration measurements arevaluable in many branches of industry.Examples of applications are: shockmeasur ement in r oll ing mills, leak de-tection in pipes, and pulsation meas-urements in pneumat ic and hydraul ic

systems. Fields of use include powergeneration, mining, motor vehicles,sh ips , and ra i lways .

Condition monitoring. I t i s wel lknown that most kinds of machineryfai lures are preceded by a r ise in vi-bration level . Regular measurement ofmachine vibration level can be used todecide whether the machine requiresmaintenance. This can form the basisof a systematic and economical tech-nique for scheduling maintenance. I t

is applicable to a very wide range ofindustrial plant, including machine-tools, steel , board and paper mills,chemical plants, cement ovens, com-pressors, diesel engines, and powersta t ions .

Vibration Severity measure-ments. Vibration Severity is a quanti-ty particularly useful in the evaluationof the running quali ty of rotating and

reciprocating machinery. The 2513 and2516 meet the requirements for an in-strum ent suita ble for measuring Vibra-tion Severity as la id down in IS O 2954(1975). Vibration Severity criteria arecovered by ISO 2372, 2373 and 3945,and corresponding na t ional s tanda rds .For quali ty-assurance personnel andtechnical staff engaged in buying orselling machinery, the 2513 and 2516provide ideal means of checking thatthe v ibra t ion generated by a machine

in operation meets i ts contractual re-

quirements. B ecause of their simplici ty

of operation, only the briefest of intro-

ductions is needed before the user

s tar ts making accurate measurements

with the 2513 or 2516.Hand-Arm Vibration. Of particular

concern to manufacturers and users of

portable power tools, and environmen-

tal health authorit ies, are the effects of

sustained exposure to vibration trans-mitted into the hands and arms of their

operators. The 2513 and the 2516 in-

corporate an electronic weighting fi l ter,

in a ccordance w ith I SO/DIS 8041 Dra ft

1987, to permit measurements to be

made of the overall level of exposure,

in accorda nce with I SO/DP 5349 (Dr a ft

19820217) when u sed w ith a Cha rge

Attenuator available to order or a suit-

able al tern at ive Accelerometer.

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bration acceleration or velocity. The

preferred parameter depends on the

application. Three different weight-

ings ma y be selected Linear, Sever-ity and Hand-Arm. The Linear

weighting (Fig.4) uses the extended

freq uency respons e of t he 2513/2516

measuring system, which is of advan-tage where vibrations to be measured

are caused by cavitation, turbulence,

roller-bearing defects, etc. The phase

response has also been optimized for

accurate shock measurement. Thisweighting can be used for such meas-

urements in both a ccelerat ion and ve-

locity modes. However, the

instruments must be set to velocity

for Vibration Severity or Hand-Armmeasurements in accordance with the

ISO standards quoted (even though

as shown in Fig.5, Hand-Arm is a

measurement of a weighted vibrationacceleration). A high-pass filter which

replaces Hand-Arm in the modified

inst rum ent 2513/WH 2258 sh ould be

used with the instrument set to ac-

celeration.

Vibra t ion Tra nsd ucer

The Type 4384 Piez oelectr ic Acceler-ometer supplied with the 2513 and

2516 is of Delta -Sh ear const ruction,

and is tr immed during manufactureto achieve a U ni-Ga in sensitivi ty of

1pC per m /s2. This ensures inter-

changeability between all 2513/

2516s a nd 4384s, a nd eliminat es t he

need for sensitivity adjustment of theVibration Meter by the user. Calibra-

tion of the overall measuring system

(4384 plus 2513/2516) is not norm a lly

necessa ry, but it can be checked using

th e Type 4294 Acceleromet er C a libra -

tor (not included).

The Mounting Magnet UA0642

supplied with the Accelerometer is

designed t o exploit the full frequency

ra nge of th e 2513/2516 sy stem . A dis c

made of self-adhesive PTFE (2 sup-

plied) may be placed under the Mag-

net if electrical isolation of the

Accelerometer from the mountingsurface is required. Ferromagnetic

Cement ing Discs YO 0070, like the

one supplied with the Magnet, may

be glued to regular measuring posi-

tions, using epoxy resin or cyanoacr-

ylate adhesive, and lef t permanently

in pla ce. Alterna tively t he Accelerom-

eter can be mounted directly by a

Threa ded St ud (supplied) in a ta pped

hole in the mounting object.To conn ect t he Accelerometer t o th e

Vibration Meter, a sturdy Cable

AO 0193, designed t o withst and the

rigours of regular shop-floor use, is

provided. This Cable is suitable for

use over a wide temperature range

(74 to + 180C), and generat es neg-

ligible int erna l noise. It is termina ted

with robust TNC coaxial connectors.

Connection to the Accelerometer is

via an Adaptor, UA0641, which in-

corporat es a sea l to provide good me-chanical contact and moisture-

resistance. The Accelerometer may

alterna tively be used with a sta nda rd

Acceleromet er C a ble (AO 0038, sup-

plied) and Adaptor J P 0162 (ava ilable

as a n a ccessory) for measurement s on

light-weight structures.

A number of alternative Acceler-

ometers are ava ilable from B &K for

various applications. In particular,

for Hand-Arm measurements to ISO/

DP 5349 (19820217), Hand-Arm

Tra nsd ucer S et Type 4392 is recom-

mended for the 2513 (with some

Fi g.4 Th e fr equency r esponse weight in gs of the 2513 (exclud in g Accelerometer) for Vi -

bration Severity and Linear. To be understood as the weighted vibration level of a

harm onic vibrat i on 1 nm / s (rm s) at the respective frequency, expressed i n d B r e 1 nm/ s

(For t he 2516 the same curves appl y but substi tu te 107i n / s f or 1nm/ s)

Fi g.5 Th e fr equency response weighti ngs of th e 2513 and 2516 (exclud in g Accelerometer )

for H and-Ar m vibrat ion. To be und erstood as the weighted vibrat ion level of a h arm onic

vibrat ion 1m/ s2 (rms) at t he respectiv e fr equency, expr essed i n d B r e 1m / s2. Alsoshown (dashed line) is the high-pass filter, which replaces Hand-Arm in the 2513/

WH 2258

882462/1e

0

10

20

30

401 10 100

Frequency (Hz)

Severity

and Linear

Linear

VibrationSeverity

Vibration Severity (based on ISO 2954) and Linear

1 k 10 k 100 k

Relativeresponse(dB

re1nm/s) x 1

x 0.3

x 0.1

x 0.03

x 0.01

Relativeresponse

882464/1e

0

10

20

30

40

1 10 100

Frequency (Hz)

Hand-Arm (based on ISO 8041) and High Pass Filter

1 k 10 k 100 k

Relativeresponse(dB

re1m/s2) x 1

x 0.3

x 0.1

x 0.03

x 0.01

Relativeresponse

Hand-Arm

High Pass Filter

Fig.3 The display of the 2513, showing

L eqand M ax. Peak in dicat ions sim ult ane-

ously. Th e rati o of Peak to L eqgives the

Crest F actor of the vibrat ion signal , whi ch

is used for d etecti ng fau lt s in r olli ng-ele-

ment beari ngs

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small correction for Accelerometer

sensitivity tolerance). This set com-

prises a miniature Accelerometer

Type 4374 a nd t w o ada ptors w hich

overcome the problem of the trans-

ducer interfering with the operators

grip. Alternatively, for the 2516, the

Minia tu re Accelerometer Type 4375

is available or, for both 2513 & 2516,

t he Acceleromet er Type 4384 sup-

plied can be used together with an

optional Charge Attenuator.

MEASUREMENT AMPLITUDE RANGES:

2513 Selectable Ranges: 1 to 100 and 10 to1000m/s2 acceleration; 0.1 to 10 and 1 to100mm/s velocity2516 Selectable Ranges: 0.1 to 10 and 1 to100g acceleration; 0.01 to 1 and 0.1 to 10in/svelocityHand-Arm Range (standard 2513 and 2516 on-ly): 100 to 160 dB re 106 m/s2 when used witha suitable Charge Attenuator or alternative Ac-celerometer

Maximum Internal Noise: 2513: 0.2m/s2 accel-eration, 0.1mm/s velocity; 2516: 0.02g acceler-ation, 0.007in/s velocity

MEASUREMENT FREQUENCY RANGES:Lin: 10Hz to 10kHz 3dB (tolerance at higherfrequencies in this range is dependent on goodmounting of Accelerometer)Sev: 10Hz to 1kHz, to ISO 2954 (1975)H-A: 8Hz to 1kHz, to ISO D/P 5349 (Draft19820217)HP: 1kHz to 10kHz 3 dB

INDICATION:Level Indicated:Instantaneous or Maximum True Root-Mean-Square (RMS), with 1s time constantTrue Peak, with 1s decay-time constant

Leqsimultaneously with Maximum PeakOverall Accuracy: (at 80Hz) 7% (including Ac-celerometer sensitivity tolerance). Temperaturesensitivity 0.05dB/C. Vibration sensitivity

20dB (relative to the vibration level at the Ac-celerometer). Magnetic sensitivity negligible forfield strengths up to 100 A/mShock Measurement: (with half-sine impulse)+2 3 dB for 0.1 to 5 ms impulse, 1 dB for 0.5to 2 ms impulse, typical.RMS Crest-Factor: 3 for full scale indication,worst case, 100 at 3% of full scaleRMS Max. Droop: Held indication will fall by notmore than 6% of indication per minutePeak Rise-Time: 6% per s. For a rectangularstep, 60sLeq/Max.-Peak function: Display gives two si-multaneous indications. Lower is Leq, upper isMax.-Peak. Display flashes until measurement

terminated (after 60s 2%) with the standardinstruments (10 s with the 2513/WH2258); dis-play is held until total 2 min. after the last Reset(2.5min. for 2513/WH 2258)Display: 41-element LED thermometer styleBrightness Adjustment: Automatic compensa-tion for ambient lighting by photo-sensitive tran-sistorResolution: 6% (0.5dB). Intermediate levels aresignified by illumination of 2 adjacent LEDsScales: Engineering units (m/s2 and mm/s on2513, gs and in/s on 2516) with logarithmic

graduations, plus dB re 1m/s2 and 1nm/s(2513) as 0dB (107in/s on 2516). For Hand-Arm measurements to ISO/DP 5349 (Draft19820217) a 20dB Charge AttenuatorWB 0726 (for 2513) and a 12dB Charge Atten-uator WB 0778 (for 2516) are available. Alterna-tively, a Hand-Arm Transducer Set Type 4392(with 2513) or a Miniature Accelerometer Type4375 (with 2516) may be used

Overload Warning: Display flashes and levelindication is suppressed until overload is re-

moved

OTHER CONTROLS:Reset: Operating any switch resets the instru-ment. Pushing Reset indicates battery condi-tion on the displayOn/Off: Push for on, push for offAC Out: Sub-miniature socket accepting 2.5mm

jack-plug JP 0213 or cable AO 0173 for connec-tion of a recorder or analyzer. Full insertion ofplug disables automatic switch-off. Output im-

pedance 10 in series with 33F. Open-circuitvoltage 1V corresponds to full scale indication.Min. load 10k

BATTERIES:Type: 3 1.5V cells to IEC specification LR6(Penlight or AA size), e.g., alkaline cells QB0013Life: 24 hours continuous measurement in roomlighting. In bright sunlight continuous measure-ment life falls to 10 hours

PHYSICAL CHARACTERISTICS:Weight: 350g (12.4oz) excl. 4384Height: 187mm (7.4in) with 4384 cable discon-nectedWidth: 72mm (2.8in)Depth: 22mm (0.9in)

Specifications 2513 and 2516

COMPLIANCE WITH STANDARDS:

CE-mark indicates compliance with EMC Directive

Safety IEC 348: Safety Requirements for electronic measuring apparatus

EMC Emission EN 50081 1 (1992): Generic emission standard. Residential, commercial and

light industry

EN 500812 (1993): Generic emission standard. Industrial environment

CISPR 22 (1993): Radio disturbance characteristics of information technology

equipment. Class B Limits

FCC Rules, Part 15: Complies with the limits for a Class B digital device

EMC Immunity EN 50082 1 (1992): Generic immunity standard. Residential, commercial and

light industry

EN 500822 (1995): Generic immunity standard. Industrial environment

Note 1: The above is guaranteed using accessories listed in this Product Data

sheet only

Note 2: The above is guaranteed only when the AC output is not in use

Temperature IEC6821 & IEC6822: Environmental Testing. Cold and Dry Heat

Operating Temperature: 10 to +55CStorage Temperature: 25 to +70 C

IEC68 2 14: Change of Temperature: 10 to +55 C (2 cycles, 1C/min.)

Humidity IEC6823: 90% RH (non-condensing at 40C)

Mechanical Non-operating:

IEC68 2 6: Vibration: 0.3mm, 20 m/s2, 10500Hz

IEC68 2 27: Shock: 1000m/s2

IEC68 2 29: Bump: 1000 bumps at 250 m/s2

Enclosure IEC529 (1989): Protect ion provided by enclosures. IP20

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Ordering Information

Types 2513/6: Integrating Vibration Meters

Include the following accessories:Type 4384 Piezoelectric AccelerometerKE 0198 Document FolderAO0193 1.2m (4 ft) TNC-to-TNC

Accelerometer CableUA0641 Adaptor, TNC plug to

Accelerometer

UA 0642 Mounting Magnet(includes 1 Ferromagnetic DiskYO0070 and 2 PTFE IsolatingDisks DS0553)

JP0213 2.5mm (0,1 in) Sub-MiniatureJack Plug

QB 0013 3 Alkaline Cells

QP4992 Measurement Record Pad

Optional Accessories

Types 2513/6:

AO0173 2.5mm-Jack-to-BNC Cable(1.5 m)

JP0162 Adaptor, 1032 UNF miniaturecoaxial connector to TNC (forconnection of other

Accelerometer Cables to 2513 or2516)

WB0726 20dB Charge AttenuatorWB0778 12dB Charge AttenuatorWB0772 1 kHZ High-pass FilterUA0553 Set of 5 Mechanical Filters

UA0559Type 4392 Hand-Arm Transducer Set (for

2513)Type 4375 Miniature Accelerometer (for

2516)DB1112 Tripod Bush AdaptorType 4294 Accelerometer Calibrator

Brel&Kjr reserves the right to change specifications and accessories without notice

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