The art of handling air

LabcontrolLaboratory-System-Management

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The requirements for engineering of air systems inlaboratory buildings are complex and demanding. Thereis a general need to protect laboratory personnel fromdangerous substances whilst simultaneously optimisingenergy usage.

The LABCONTROL system offers a customised solutionincluding the regulation and monitoring of individualfume cupboards and rooms, all the way up to theprovision of an entire laboratory building ventilationsystem. This is undertaken taking into account therelated standards and regulations, e.g., EN 14175 or DIN 1946, Part 7.

To provide the necessary fast response times, roompressure and room temperature controls can becombined. The LABCONTROL product family specificallyaddresses these requirements electronically- oralternatively we can offer pneumatic options.

The electronic controller uses analogue – and/or digitalsignals (LonWorks®) for communication. Efficientsystems, centralised measurement and monitoring of allsystem parameters, e.g. error messages, providesincreased security. An ability to rapidly modify a system offers greater flexibility. Remote access allows diagnosticsand adjustment of parameters without incurring largepersonnel and time costs.

To achieve such a total concept, requires close co-operation at the design stage of a project betweenconsultants, the end users and the equipmentmanufacturers (laboratory furniture, air and controlengineering). The early coordination of design in the long term can simplify the achievement and maintenance of excellent safety and comfort conditions within thelaboratory area.

Labcontrol – Labair Management

Working place security combined with efficient energy managementin the field of laboratory ventilation

Bayer AG Research Center,Wuppertal

LON USER ORGANISATION e.V.

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Control

Fume Cupboard Control

The TCU II or TCU-LON II control units are mainly usedfor controlling fume cupboards with variable volume flow rates. This is done by intake velocity/volume flow cascade control. All requirements of DIN 12924, EN 14175,BS7258 and ASHRAE standard are complied with.This controller offers the highest possible level of safetywhile remaining economical. For use as a fume cupboard controller, the TCU-LON II is combined with a Trox volume flow control device (e.g. TVLK). The unit consists of theTCU-LON II controller with an integrated function controland the volume flow control device with actuator andcontrol damper. In addition, the FCC-E intake velocitytransducer is supplied separately and mounted onto thefume cupboard via a 20 mm dia hole by the customer.Also included in the delivery is an operator terminal foruser operation of the controller.

The FCC-E transducer measures intake velocity withoutcontact, moving parts or wear. The sash window can beadjusted in its vertical plane and slid in its horizontalplane. The interconnection of a number of fumecupboards is also possible. The measurement systemrecords the intake velocity independently of the locationof the opening.

Thermal loads inside of the cupboard do not affectmeasurement, but automatically lead to an increase inthe volume flow rate and thus safe extract of the heatloads. The actual volume flow value is available as adigital LON signal. As a result, the fume cupboard canbe included in room air balance. Override switching canbe performed by switch and relay, or LON signals can besent to the controller. There is integral intake velocitymonitoring with both acoustic and visual alarms. Fornight operation, error messages can be suppressed.

Fume Cupboard Control

LON-Bus

TVLK with TCU-LON II

FCC-E-Transducer

Ready-madeconnectingcable with plug-inconnector

Operator terminal

Fume Cupboard Control with Movement Detector and Additional Switching Functions

Motion sensor*

500 mm wiring accordingto EN 14175 possible

Switch S1programmable,e.g. Shut off**Switch S2programmable,e.g. night operation** Altogether two options can be used simultaneously

Max Planck Institutefor chemistry, Mainz

Control Diagram

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Room Volume Flow Control

The TCU-(LON) II controller can be combined with theVAV controller types TVZ, TVA, TVJ, TVT, TVRK, TVR, TVS,to control variable supply and extract volume flows inthe room. The velocity control of the fume cupboards issuch that stable room pressure can be maintained. Sincethe air tightness requirements of rooms are continuallyincreasing due, for example, to fire protection measures,this is of critical importance.

For balancing the room, up to 16 actual volume flowrates from fume cupboards, room controllers or otherextract sources can be connected via the LON networkto a corresponding room controller. In addition,temperature and room pressure can be connected.

As a characteristic of the LON variant, special operationmodes can be passed on from the room controller(master node) to all the other linked controllers.Furthermore, the operation modes can be easilyconfigured in the other linked controllers so that, forexample, individual fume cupboards continue to controlwhen in the room reduced operation mode (modechange).

Hydrogen Center, Schwerin

Example

1 2 . . . . . 16

Extract air

Supply air

Ex.LON-Bus

Total Extract

Supply Air

Room Extract

FumeCupboardExhaust

Constant

Extract

Volu

me

Flow

Sash Closed Fume Cupboard Sash Open

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Room Control Considering the DiversityFactor SF

Large laboratory buildings are often operated with thevolume flow balance taking diversity factors intoaccount for reasons of economics. Then the advantagesof variable volume flow control can be fully utilised.This method is based on only a few of the fumecupboard sashes being open at the same time. Most ofthe fume cupboards are assumed to be closed. Theadvantage of this procedure lies in the fact that boththe duct system and the fans can be reduced in size.Until recently, this design requirement could lead toproblematical situations which, thanks to the newLABCONTROL generation, are now a thing of the past. It was previously necessary to carry out air flowbalancing to ensure that the calculated air conditionswere maintained in all areas. This is now checked by theTCU II or TCU-LON II controller itself and corrected asnecessary.

This prevents a diversity factor = 1 occurring in areasthat, for example, are near the fans, which results in adiversity factor of lower than the calculated value inother areas. It is difficult, of course, for laboratory usersto find out which part of the laboratory is responsiblefor this imbalance. Unacceptably high deviation of theair balance is recognized by LABCONTROL and can becorrected by lowering the volume flow at the open fumecupboards. A negative effect on adjacent laboratoryareas is prevented.The fume cupboard controller generates an alarm at theoperator terminal, alerting the user that the diversityfactor has been exceeded. In addition, an alarmmessage can be transmitted via LON and/or relay outputto the BMS if the diversity factor is exceeded.

Example

■ Room with 5 fume cupboards,Vmax fume cupboard = 500 m3/h, Vmax fume cupboards total = 2500 m3/h

■ At most, 3 fully open fume cupboards allowedsimultaneously, equals Vmax fume cupboards total

= 1700 m3/h

■ As in the example shown, also with the fourth fumecupboard open, the TCU-LON II- controller willreduce the total volume flow Vmax to 1700 m3/h, 400 m3/h per fume cupboard.The four fully opened fume cupboards give an alarmsignal. For safety operation, one cupboard mustclosed.

500

400

100

m /h3

500

400

100

Volume flow fume cupboard

Reduced volume flow

BYK Chemie, Wesel

Laboratory under-pressureor over-pressure

Corridor

MDT *,±50Pa

Extract air

Supply air * Diaphragm pressuretransducer

Room Pressure/Room Balance Cascade Control

Temperature Control

Volume Flow Rate Change

A temperature control can be achieved in a number ofways. The volume flow rate is varied dependant on thetemperature signal, without room pressure changing.

Following variants are available:1. Volume flow rate influence with temperature control

by TCU-(LON) II, direct connection of temperaturesignal (see example). Switch-over for summer/winter integrated and can also be controlled.

2. Changing of volume flow by an external temperaturecontroller with 0 to 10 VDC signal, or as LON order(only TCU-LON II).

Reheat Control

The TCU II or TCU-LON II can be operated with a VAVcontroller with an integral reheat. The control signal isprovided by the TCU II via a 3 point signal and by theTCU-LON II via LON.

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Room Pressure/Room Balance Cascade Control

Instead of having only a room balance control, it ispossible to make a combination between a roombalance and room pressure control. In this case, allindividual extract air volume flow rates are recorded andcommunicated to the room controllers. The room controllers themselves balance the necessary room supply and extract air. Additionally, the recorded room pressureis connected to the room supply controller in cascade.If there is a difference between actual room pressureand the specified required value, a supply-extractvolume flow difference shift will compensate for this.

In contrast to room pressure control only, this processtakes the room volume flow balance into account, whichhas a benefit in terms of fast response time and bearingin mind the fast acting control system for the fumecupboards. Extreme volume flow rate control-damperblade positions are avoided as only fixed tolerances areused in the control of the room pressure. A changeoverbetween under and over pressure (septic/aseptic) can be configured as well. The TROX TPM can be used as a display unit to show the room pressure and, if necessary, further error messages.

Room Pressure, Room Balance andRoom Temperature Control

TCU-(LON) II

Room extract airConstantextract

Fume Cupboards

Air-lockRoom supply air

Total Extract

Room Extract

Constant

Extract

FumeCupboardExhaust

CoolingRequired

Fume Cupboardstarts to Open

SupplyAir

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VAV-ControllerType TVLK

Fume cupboard and roombalance digital controllerType TCU-LON II

Labcontrol Components

Fume cupboard androom balance controllerType TCU-II

Type TCU-LON II

■ Fume cupboard and room balance controller withLonWorks® technology

■ Regulation and monitoring of fume cupboards withvariable volume flow

■ Operator terminal for status display and special functionconnection for the fume cupboard

■ Measurement of the inlet velocity into fume cupboardwith a separate transducer

■ Room temperature and room pressure control possible■ Downloading of parameters via Trox Plug-Ins■ FTT 10A Transceiver free topology■ Remote access possible■ 24 VAC supply

VAV controller for aggressive media

Type TVLK

■ All components coming into contact with the air aremade of resistant PPS (up to sealing lip of chloroprene rubber)

■ Length: only 400 mm■ Diameter: 250 mm■ Demountable differential pressure sensor for cleaning

purposes

System solution for fume cupboards and room balance

Type TCU-II

■ Fume cupboard and room balance controller withanalogue communication

■ Regulation and monitoring of fume cupboards withvariable volume flow

■ Operator terminal for status display and special functionconnection for the fume cupboard

■ Measurement of the inlet velocity into fume cupboardwith a separate transducer

■ Room temperature and room pressure control possible■ Downloading of parameters via Trox Labconnect■ 24 VAC supply

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Monitoring Device for FumeCupboards, Type FCM-N1/N2

Monitoring devices for fume cupboards

Type FCM-N1/N2

■ Monitoring device for checking the volume flow rate offume cupboards

■ With integral differential pressure measuring device andseparate differential pressure sensing element (FCM-N1)

■ With the ability to accept an actual flow rate outputsignal from a VAV controller (FCM-N2)

■ Display of the current status by a control terminal (for installation on the fume cupboard)

■ Able to transmit error messages■ 230 VAC supply voltage

Monitoring devices for room pressure

Type TPM

■ Room pressure monitoring device■ With the ability to connect to the output from a room

pressure differential transducer (ring balance manometer,pressure transducer)

■ Display of the current status on a control terminal (wall installation)

■ Able to transmit error messages■ 230 VAC supply voltage

Fume cupboards certification in accordancewith EN 14175

■ Security and air conditioning tests of fume cupboardsaccording to EN 14175

■ Any necessary type examination can be performed tocertify the fume cupboards

■ Alternatively “onsite tests” can be performed

Room Pressure Monitoring Device,

Type TPM

1110

1 TVLK/250-XXX/TMA/FH (LON)

TVLK/250-XXX/TRA/FH (Analogue)

2 Operator terminal

3 CAK silencer (PPS)

4 Optional motion sensor

5 TVR/XXX/TMA/RS (LON)

TVR/XXX/TRA/RS (Analogue)

6 CA silencer

7 TVRK/XXX/TMA/RE (LON)

TVRK/XXX/TRA/RE (Analogue)

8 Air diffuser type VDW

9 RN-P1/D2/XXX

10 Air diffuser type PCD

11 FK-K90-1-6

12 FKRS-02-K90-1

13 MDT room pressure

14 TPM room pressure monitoring

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1

3

2

TROX Laboratory System Solutions

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Swirl DiffusersType TDV-SilentAIR

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Ceiling DiffusersType PCD

Air Diffusers · Additional Components

Swirl Diffusers Type RFD

Type PCD (Hesco)

■ PROCONDIF® ceiling Diffusers with high-permeabilityhoneycomb structure

■ Controlled velocity profile of the supply air – PROFILE CONTROLLED DIFFUSION

■ Ideal for directional discharge, large volume flow rateswith moderate temperature differentials

■ Circular and square construction■ Material: powder-coated, galvanized steel face plate,

inner part made of plastic■ Plenum box optionally with volume control damper■ Volume flow range: 80-170 l/s■ Sizes: � 600/625 mm; ø 725 mm

Type RFD · FD · TDF / RA (Hesco)

■ Swirl diffusers for supply and extract air with fixed blades■ Suitable also for VAV systems thanks to the large volume

flow rate turn down ratio (25-100%)■ Rapid reduction of jet velocity and temperature

differential due to high induction■ Exposed installation or integrated into the false ceiling■ Circular or square face sections■ Material: powder-coated, galvanized steel

(type RA in plastic)■ Plenum box with top or side entry connecting spigot,

optionally with volume control damper■ Recommended volume flow range: 8-270 l/s■ Sizes: NW = 125-400 mm; 300/400/500/600/625 mm

Types TDV · VDW

■ Swirl diffusers for supply and extract air■ Manually adjustable to alter the direction of discharge to

match changes in room layouts■ Due to high induction rapid reduction of jet velocity and

temperature differential■ Low sound-power levels with high volume flow rates■ More than 30 air changes per hour and supply air

temperature differentials of +/-12 K are possible■ Circular or square face sections■ Material: powder-coated, galvanized steel■ Plenum box with top or side entry connecting spigot,

optionally with volume control damper■ Recommended volume flow range 15-350 l/s■ Sizes: 300/400/500/600/625/825 mm

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Fire dampers

■ Types FK-K90 · EN-FKS-K90 · FKRS-02-K90with Z-41.3-318 · Z-41.3-653 · Z-41.3-604 generalapproved construction guidelines

■ Recommended construction:- with powder coat finishNote: Construction provides good resistance againstcorrosive agents

■ Recommended applications:- Wall or ceiling slab situations- With independent installation frameNote: In these applications, a replacement of the unitwithout disturbing the installation frame is possible

■ Maintenance cycles:Depending on the equipment technology and theoperating conditions

■ Available sizes:- FK-K90 type

Widths/Heights of 200/200 to 1500/800 mm and NW 200 to 710 mm fitted with circular connectingspigots

- EN-FKS-K90 typeWidths/Heights of 200/200 to 800/200 mm

- FKRS-02-K90 typeNW 100, NW 125, NW 160, NW 200

Room control units

■ Room control units according to LONMARK® standard■ Suitable for wiring of labcontrol components■ Changeover of the operating modes■ Mode selection of temperature set and actual values■ The display of the respective operating mode as text in

the display is possible■ Different designs and materials are possible

Fire DamperType FKRS-02-K90

SilencerType CAK

Type CAK

■ Suitable for a duct system, in which aggressive extract airis handled

■ Suitable for type TVRK / TVLK units■ Plastic casing (PPS)■ Non-combustible mineral wool according to DIN 4102 A2■ NW 125-400; lengths 500, 1000, 1500 mm■ Optionally with flanges

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Services for Intelligent Laboratories –Putting safety first

Ventilation and air-conditioningsystems for laboratories are avital part of the safety equip-ment. To achieve optimumefficiency, it is important tocheck the equipment isfunctioning correctly beforebeing used for the first time,and to adapt the system tothe locally prevailing condi-tions. The German GovernmentSafety Organisation for theChemical Industry (BG-Chemie)stipulates in its Guidelines forLaboratories ZH 1/119 Pt. 11.5 thatall fume cupboards must be servicedannually. Moreover, fume cupboards areto be inspected by a specialist at least oncea year in accordance with Guideline No. 11.5BGR 120; § 39 Section 3 BBV A1; 2 §53 Section 2 ArbStättV. Similar safety guidelines are in place incountries throughout the world.

That is why we offer our customers commissioning andmaintenance agreements.

Please contact us for more information.

Why are commissioning and maintenance byspecialised personnel recommended?

The air handling control systems deal with manycomplex tasks in laboratory applications. In all opera-ting conditions, the security of the laboratory user isessential. To ensure this, the functioning of the fumecupboards are permanently monitored, as well as theentire room balance. All the parameters, such as room

pressure, room temperature or set and actual volumeflow rates, can be easily displayed and monitored.

All these parameters are correctly setup during the projectcommissioning. When the hardware and the softwareoriginates from Trox, the interfacing of the componentsis guaranteed.

On account of the range of possibilities that LABCONTROL systems allow, Trox offers with confidence, a total commissioning package by experienced system engineers. Their ability to safely handle the components and theexperience gained within the room air engineering forlaboratories will save time and thus money. You canprofit from the system integration experienceparticularly by using the LONWORKS® technology.

Services

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Remote access

Do you sometimes wish you had an expert who could assist you in a matter of minutes? Would you like to reset a fume cupboard or room controller to new volume flows or find out the reason for an error message?

The Trox remote access system makes all this very easy.Our service technicians can access your system bytelephone or Internet (as agreed upon with you). This allows us to perform remote diagnosis or analysefunctions and perhaps modify the system to meet yourneeds.

Alarm Messages:

You do not have a building management system that isstaffed 24 hours a day and want, nevertheless, toreceive a warning message in the case of systemmalfunctions? You can now arrange for LABCONTROL tosend error messages (alarm messages) to your mobilephone or fax machine. A fault message for instance,can also be sent to an e-mail address or to a displayset up at your company’s control centre. You select theoption most suitable for your system.

Byk-Chemie, Wesel

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Abbott GmbH & Co.KGLudwigshafenAldrich ChemieSteinheimAsta MedicaMainzBASFLudwigshafenBATBayreuth

Bayer DormagenDormagenBayer LeverkusenLeverkusen Bayer Monheim Monheim Bayer WuppertalWuppertalBioparkRegensburgBioscientiaIngelheimBMWDingolfingBoehringer IngelheimIngelheimBrandenburgischeTechnische UniversitätCottbusBykGuldenByk-ChemieWeselCBWBitterfeld-WolfenCharitéBerlin

CVUAMünsterDow CorningWiesbadenFachhochschule AnsbachAnsbachFachhochschule JenaJenaFachhochschule MagdeburgMagdeburgFachhochschule MerseburgMerseburgFachhochschuleNeubrandenburgNeubrandenburgFachhochschule RosenheimRosenheim Forschungszentrum JülichJülichForstwissenschaft TharandtTharandtFSU Jena Klinikum2000JenaFSU Jena TierhausJenaGoldschmidt AGEssenGrünenthalAachenH.C.StarckGoslarHiltiKauferingHochschule für Technik undWirtschaftDresdenHüls AGMarlInfra LeunaLeunaInfraServ Höchst Frankfurt /MainInstitut für PolymerforschungDresdenIUBBremenIZB MartinsriedMunichKist EuropeSaarbrückenLandesuntersuchungsanstaltDresdenLandesuntersuchungsamtErlangen

Lurgi Zimmer AGFrankfurt /MainMerckDarmstadtMedizinische HochschuleHannoverHanoverMartin-Luther-UniversitätFB ChemieHalleMax Planck InstitutBiogeochemieJenaMax Planck InstitutDresdenMax Planck InstitutFrankfurt /MainMax Planck Institutfür ChemieMainzMax Planck Institut für CÖJenaMax Planck Institut fürPolymerforschungMainzMax Planck InstitutMagdeburgMax Planck InstitutRostockOMZHeidelbergPaul Ehrlich InstitutFrankfurt /MainPhysikalische Chemie RWTHAachenRochePensbergRuhrhauslabor EssenEssenRuhruniversität BochumBochumSachsSchweinfurtSartoriusGöttingenSolvayHanoverSpektroskopieDortmundStaatl. LebensmittelamtBraunschweigTechnische UniversitätChemnitzChemnitz

Technische UniversitätDresdenDresdenTechnologiepark KölnElementisCologneTGZ Bitterfeld WolfenBitterfeldUniversität Bonn PhysiologieBonnUniversität DortmundDortmundUniversität Essen KlinikumEssenUniversität FreiburgFreiburgUniversität HamburgToxikologieHamburgUniversität HannoverHanoverUniversität HeidelbergHeidelbergUniversität HomburgHomburgUniversität Leipzig PathologieLeipzigUniversität MagdeburgPathologieMagdeburgUniversität MünsterMünsterUniversität OldenburgOldenburgUniversität RostockRostockUniversität TübingenTübingenUniversität WürzburgWürzburgUTZ Berlin AdlershofBerlinVW-Werk ForschungsgebäudeWolfsburg WasserwirtschaftsamtArnsbachWasserwirtschaftsamtBamberg

Labcontrol Reference List - Germany

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Australian Nuclear Scienceand TechnologyOrganisation (ANSTO)AustraliaJanssen PharmaBelgiumPIDPA AntwerpenBelgiumCocaColaBelgiumJiling Univercity ShanghaiChinaUniversity ShanghaiChinaPliva ZargrebCroatiaMarcipan OdenseDenmarkUniversity OdenseDenmarkHTX RandersDenmarkLEO PharmaDenmarkAstra Zeneca, DunkerqueFranceAventis LyonFranceCorning FontainebleauFrance

GaldermaFranceIECB PessacFranceInnothera ArcneilFranceL'OREAL ParisFranceNTE GibervilleFranceRhone Poulenc LyonFranceSOGIT GrenobleFranceSanofi SisteronFranceSNCF Vitry sur Seine ParisFranceUniversity MarseilleFranceBirmingham UniversityGreat BritainCambridge Science ParkGreat BritainMerckGreat BritainMoorefield Eye HospitalGreat BritainWolfson LaboratoriesLondonGreat Britain

Bristol Meyers SquibbIrelandSwords Lab DublinIrelandDipharma Baranzate di Bollate MilanoItalyProtezione Civile di TrentoItalySchering S.p.A. SegrateMilanoItalyEuroforumLuxemburgStork UtrechtNetherlandsHigh School OsloNorwayAmphiagon PharmaSpain

BASF TarragonaSpainInstitut de chimieNeuchateSwitzerlandNestle KonolfingenSwitzerlandNovartis Pharma BaselSwitzerlandSandoz BaselSwitzerlandSiegfried AG ZofingenSwitzerlandTechcenter RheinachBaselSwitzerlandUniversity Irchel ZürichSwitzerlandSabanci University IstanbulTurkey

The art of handling air

Gebrüder Trox GmbH Telephone +49(0)28 45 / 2 02-0Heinrich-Trox-Platz Telefax +49(0)28 45 / 2 02-2 65

www.troxtechnik.com47504 Neukirchen-Vluyn e-mail trox@trox.de

Labcontrol Reference List - International

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