CEMB N200 User guide

Vibration equipment division
www.cemb.com
CEMB S.p.A.
Via Risorgimento, 9
23826 MANDELLO del LARIO (Lc) Italy
*Translation of the original instructions
N200
Vibrometer beariNg aNalysis
Use aNd maiNteNaNce iNstrUctioN maNUal

Vibration equipment division
N200 - Ver.1.0 11/2016
General index
1. General description 5
1.1 Standard acceSSorieS 5
1.2 optional acceSSorieS 5
1.3 connectionS 6
1.4 pulSante di reSet 7
1.5 Battery 7
1.6 adjuStment and caliBration 8
1.7 General advice 8
2. General layout 9
2.1 Keypad 9
2.2 S
tart / Stop the acquiSition 10
2.3 Specific additional functionS for the variouS paGeS 10
3. Home screen (menu) 12
4. setup mode 13
4.1 SenSor SenSitivity 13
4.2
date
14
4.3 time 14
4.4 unitS of meaSurement SyStem 14
4.5 diSplay BriGhtneSS 14
4.6 BacKliGhtinG auto-off time 14
4.7 inStrument auto-off time 14
5. Vibrometer mode 15
5.1 meaSurement SettinGS 15
5.1.1 SenSor type 15
5.1.2 MeaSureMent 16
5.1.3 unitS of MeaSureMent 16
5.1.4 type of vibration 16
5.1.5 unitS of frequency 16
5.2 SettinGS only valid for overall meaSurementS 16
5.2.1 frequency range 16
5.2.2 no. of averageS 17
5.3 SettinGS for SynchronouS meaSurementS only 17
5.3.1 SynchronouS filter width 17
5.4 meaSurement reSultS 17
5.4.1 overall MeaSureMent 17
5.4.2 SynchronouS MeaSureMent 18
5.5 additional functionS 20
5.5.1 diSplaying MeaSureMentS froM the recordS 20
6.
tacHometer mode 21
6.1 meaSurement SettinGS 21
6.2 rotation velocity meaSurement 21

N200 - Ver.1.0 11/2016
7. cba cemb bearinG analysis 23
7.1 meaSurement SettinG 23
7.2 cBa meaSurement 23
8
. cemb n-pro proGram (optional) 2
4
8
.1 SyStem requirementS 2
4
8
.2 inStallation of the Software 2
4
8
.3 inStallation of driverS for uSB communication with the n100, n300 inStrumentS
(for verSion 1.3.4 or earlier) 2
5
8
.4 inStallation of driverS for uSB communication with the n100 and n300 inStrumentS
(for
verSion 1.3.5 and later only) 2
6
8
.5 activatinG the Software 2
7
8
.6 uSe of the Software 2
8
7.6.1 function bar 2
8
8
.7 General SettinGS 2
9
8
.8 readinG data from the n100 or n300 inStrument
30
8
.9 data recordS imported from the n100 or n300 inStrument 3
1
8.10 R
eadinG data from the n600 inStrument 3
1
8
.11 diSplayinG data preSent in the recordS 3
2
8
.12 Specific functionS for the Spectrum GraphS 3
2
8
.13 SynchronouS viBration value meaSurement (only for n100 and n300 inStrumentS) 3
3
8
.14 BalancinG data (only for n300 and n600 inStrumentS) 3
4
8
.15 Generation and printinG of certificateS (reportS) 3
4
8
.16 GeneratinG and printinG multiple meaSurement certificateS (multi-report) 3
5

Vibration equipment division
N200 - Ver.1.0 11/2016
Appendix A
tecHnical data
36
Appendix B
eValuation criteria
37
Appendix C
a rapid Guide to interpretinG aspectrum
38
Appendix D
information related to tHe creation of customised templates (models) for certificates Generated by
cemb n-pro software
44
Appendix E
list of symbols used for tHe instrument
48
Appendix F
errors indicated on tHe display 51

N200 - Ver.1.0 11/2016

Vibration equipment division
5
N200 - Ver. 1.0 11/2016
1. General description
The N200 instrument and its accessories are supplied in a handy case.
We recommend the instrument is returned to its case after every use to protect it from damage during transport.
1.1 standard accessories
• N200 instrument complete with battery
• Battery charger
• 1 TA-18S accelerometer transducer
• 1 transducer connection cable
• 1 magnetic base
• 1 probe
• Multilingual manual on CD-ROM
• Case for transport
• “Gettingstarted”leaetwithbasicinstructionsforuse
• 1 USB data cable
1.2 optional accessories
• Photocell (18,000 rpm) with upright and magnetic base
• 10m-long extension cable for transducers
• 10m-long extension cable for standard photocell
• CEMB N-Pro software for saving, managing and printing data.
.

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N200 - Ver. 1.0 11/2016
12
34 5
1.3 connections
1. sensor input
2. photocell input for velocity measurement
3. type B mini USB port for connection to PC
4. instrument reset button
5. battery charger connector
The sensors and photocell can be connected by simply inserting the connector into the relative socket, pushing it in until a
"click" is heard; make sure that the safety connection is aligned correctly, as shown in the illustration.
To extract the connector, press the terminal part (blue or yellow) and simultaneously pull the main body (grey), to release it.
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warninG!
aVoid pullinG tHe connector witH force before releasinG it as described aboVe,
otHerwise tHere would be risk of damaGinG it.
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Vibration equipment division
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N200 - Ver. 1.0 11/2016
1.4 reset switcH
In some special circumstances, CEMB customer service may advise you to reset the N200 instrument. To do this, press the
buttonlocatedonthelowerpartoftheinstrumentusingasmallobjectwitharoundedtip.Itispurposelylocatedinadifcult
to access area to prevent it from being reset unintentionally.
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warninG!
intHe eVent of an error tHat cannot be reset automatically, tHe messaGe "err" will be displayed on tHe screen
followed by tHe number identifyinG tHe error tHat occurred.
sHould tHis situation occur, tHe instrument must be reset manually by pressinG tHe reset button.
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warninG!
donot use pointed objects sucH as needles, puncHes or sucHlike to press tHe reset button as tHey could damaGe it.
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1.5 battery
The N200 instrument is provided with a built-in rechargeable lithium battery, which allows autonomy of more than eight hours
under normal operating conditions of the instrument.
The battery status is indicated by an icon in the upper right hand corner of the screen.
battery fully charged
battery partly charged
 batteryalmostat(batteryliferemainingwhenthisappearsisapprox.onehour)
 batteryat:rechargewithin5minutes
Ifthebatteryisatandtheinstrumentisnotrechargedwithin5minutesitwillswitchoff.
This would interrupt any active measurements not yet saved.
Whenthebatterychargerisconnectedthedisplaylightsupbrieyindicatingtheconnection,evenwhentheinstrumentis
switchedoff.Thebatteryiconremainsanimatedwhentheinstrumentisrecharging,progressivelyllingup.Whencharged,
the animation stops and the ‘battery fully charged’ icon is shown.
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warninG!
wHen connectinG tHe battery cHarGer, first insert tHe connector into tHe releVant socket on tHe n200 instrument;
only pluG it into tHe power supply socket wHen tHis Has been done.
wHen recHarGed, unpluG tHe battery cHarGer from tHe power supply socket before remoVinG tHe connector from tHe instrument.
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warninG!
itis stronGly recommended to recHarGe tHe battery witH tHe instrument switcHed off: as recHarGinG is completed witHin less tHan fiVe
Hours sucH precaution preVents tHe battery cHarGer from beinG connected for an excessiVely lonG period of time (max. 12 Hours).
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warninG!
tHe litHium battery is able to witHstand tHe recHarGinG-discHarGinG cycles, eVen on adaily basis, witHout problems but it could become
damaGed if allowed to be fully discHarGed. for tHis reason it is adVisable to recHarGe tHe battery at least once eVery tHree montHs,
eVen in tHe case of extended idle period.
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8
N200 - Ver. 1.0 11/2016
aSthe diSplay backlighting conSuMeS the MoSt power, it SwitcheS off autoMatically after acertain period of tiMe
(Settable) haS paSSed without preSSing any key. preSSing any key (excluding will reactivate it).
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warninG!
recHarGe tHe instrument before storinG it if you do not intend to use it for alonG period of time. intHis case, remember to recHarGe it
eVery 3 montHs: tHe internal clock also consumes power (eVen tHouGH tHe amount consumed is low), tHerefore after alonG period of
disuse it is possible tHat tHe battery will be flat.
alternatiVely, tHe battery can be disconnected before storinG tHe instrument for lonG periods of time: remember tHat in tHis case tHe
date and time will need resettinG tHe next time tHe instrument is used. intHe case of tHe second HypotHesis, to maximise tHe battery life
it sHould be fully cHarGed at least eVery 8-9 montHs.
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1.6 adjustment and calibration
Before delivering the N200 instrument to the client, CEMB laboratories subject it to a complete adjustment, calibration and
test procedure to guarantee it works correctly.
1.7 General adVice
Storeandusetheinstrumentawayfromsourcesofheatandconsiderablystrongelectromagneticelds(high-powerinver-
ters and electric motors).
Measurement precision can be invalidated by the connection cable between the transducer and the instrument, therefore
werecommendthat:
• the cable does not share the same path as the power cables;
• any power cables crossed should be overlapped perpendicularly;
• theshortestpossiblecableshouldbeused;infactoatinglinesactasactiveandpassiveaerials.
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warninG!
always pay tHe utmost attention durinG measurement operations, usinG suitable protectiVe deVices wHen possible
to safeGuard tHe operator from moVinG parts wHen not possible, always leaVe an adequate safety distance between tHem.
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