SCHMIDT Volume Flow Sensor IL 30.0xx Instruction for Use

Transcription

1 SCHMIDT Vlume Flw Sensr IL 30.0xx Instructin fr Use

2 SCHMIDT Vlume Flw Sensr IL 30.0xx Table f Cntents 1 Imprtant infrmatin Applicatin range Munting instructins Electrical cnnectin Signalling Cmmissining Infrmatin cncerning peratin Service infrmatin Technical data Dimensins Declaratin f Cnfrmity Imprint: Cpyright 2018 SCHMIDT Technlgy GmbH All rights reserved Versin: Subject t mdificatins Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 2

3 1 Imprtant infrmatin The instructins fr use cntain all required infrmatin fr a fast cmmissining and safe peratin f SCHMIDT vlume flw sensrs. These instructins fr use must be read cmpletely and bserved carefully, befre putting the unit int peratin. Any claims under the manufacturer's liability fr damage resulting frm nn-bservance r nn-cmpliance with these instructins will becme vid. Tampering with the device in any way whatsever - with the exceptin f the designated use and the peratins described in these instructins fr use - will frfeit any warranty and exclude any liability. The unit is designed exclusively fr the use described belw (refer t chapter 2). In particular, it is nt designed fr direct r indirect prtectin f persnal r machinery. SCHMIDT Technlgy cannt give any warranty as t its suitability fr certain purpse and cannt be held liable fr errrs cntained in these instructins fr use r fr accidental r sequential damage in cnnectin with the delivery, perfrmance r use f this unit. Symbls used in this manual The symbls used in this manual are explained in the fllwing sectin. Danger warnings and safety instructins. Read carefully Nn-bservance f these instructins may lead t injury f persnal r malfunctin f the device. General nte All dimensins are given in mm. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 3

4 2 Applicatin range The SCHMIDT Vlume Flw Sensr IL 30.0xx is designed as inline sensr i.e. the tubular measuring sectin is already integrated in its basic bdy. Fur variants with different diameters are ffered: Type Inner-Ø [mm] Thread cnnectin Vlume flw [Nrm-m 3 /h] Article N. IL DN 15 / G½ IL MPM 27.3 DN 25 / G IL MPM 41.9 DN 40 / G1½ IL MPM 53.1 DN 50 / G Table 1 Cnnectin t the pipe system is carried ut by the internal threads n bth sides f the base bdy, suitable extended measuring sectins are ffered by SCHMIDT Technlgy as ptinal accessry (see page 7). The sensr measures bth vlume flw as well as the temperature f pure 1 air and gas with wrking pressure up t 16 bar (gauge pressure). The sensr is based n the measuring principle f a thermal anemmeter and measures the standard vlume flw f the measuring medium which is utput in a linear way as standard (respective: Nrm) vlume flw V N (unit: m 3 /h), referred t standard cnditins f T N = hpa and p N = 20 C. Thus, the resulting utput signal is independent f the pressure and temperature f the measured medium. The sensr features several special prperties, ntably due t the unique Multi-Pint-Measurement design (MPM) f its sensr elements: Best measurement results even in nt fully smthened air flws Excellent sensitivity High measurement dynamics These prperties make the sensr highly suitable fr: Cnsumptin f cmpressed air Cnsumptin f gases When using the sensr utdrs, it must be prtected against direct expsure t the weather. 1 N chemically aggressive cntent / abrasive particles; check suitability in individual cases Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 4

5 3 Munting instructins General infrmatin n handling The vlume flw sensr IL 30.0xx is a precisin instrument with high measuring sensitivity, which can be achieved nly by a delicate structure f its measuring prbes. Therefre, applying mechanical frces t the prbe tips inside the husing shuld be avided if pssible. In case f cleaning by the custmer, this shuld preferably be made cntactless (e.g. with a spray) r nly with apprpriate care. The sensr prbes shuld nt be tuched r expsed t any ther mechanical effects. Likewise, a tuch can cause electrical damage t the ESD-sensitive sensr elements. The sensr prbes can be damaged by ESD. T prtect the sensitive inside, SCHMIDT Technlgy delivers the sensr with prtective caps placed int bth ends f its bdy which shuld be remved nly befre final installatin. And vice versa when dismunting the sensr the prtective caps shuld be attached in place immediately. In general, great care is required when handling the sensr. The husing f the sensr is made f andized aluminium. This ensures a lw-frictin screw-in f the installatin pipes int the husing. Due t the sftness f the material, hwever, the thread windings culd be irreversibly damaged when tilting the pipes while screwing in. The threads f the sensr bdy can take irreversible damage if handled incrrectly, i.e. by tilting pipes when screwing in. If the sensr is installed withut the extended measurement sectins which are ffered by SCHMIDT Technlgy, the dimensins and tlerances prescribed by the manufacturer must be bserved strictly fr the custmized installatin. Crrespnding dimensinal drawings are available as dwnlad frm Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 5

6 Systems with verpressure The IL 30.0xx is designed fr a maximum wrking pressure f 16 bar. As lng as the measuring medium is perated with verpressure, make sure that: Only apprpriately pressure-tight munting accessries are used. All cnnectins t pressurized systems are checked fr pressure tightness frm time t time. Munting and dismunting f the sensr can be carried ut nly as lng as the system is in depressurized state. The extended measuring sectins, which are ptinally available frm SCHMIDT Technlgy (see subchapter Accessries), are delivered with tw O-Rings which are intended as pressure seals fr easy installatin (must be applied by custmer). If the custmer uses his wn pipes, suitable installatin and sealing equipment must be used (e.g. sealing tape). In any case take care that the threads are screwed int the husing withut tilting, t avid damaging f the sensr bdy. Furthermre, befre applying pressure, the sensr must be checked fr a safe and firm installatin. After pressurizatin check fr any leakages and eliminate them immediately if there are sme. Befre applying pressure, make sure that all screw cnnectins are firmly seated and cannt be lsened. Unscrewing while the system is under pressure can damage the sensr and can als result in serius harm t yur health. The pressure sealing parts f the installatin have t be checked regularly fr pressure tightness and safe installatin. Flw characteristics Lcal turbulences f the medium can cause distrtin f measurement results. The resulting measurement distrtins are reduced t a minimum by the special sensr design MPM (Multi-Pint-Measurement all variants except IL ). In rder t get maximum accuracy it s nevertheless advisable t smth turbulences f the gas flw befre applying it t the sensr. The simplest methd is t prvide a sufficiently lng distance bth in frnt f (run-in distance) as well as behind the sensr (run-ut distance) abslutely straight and withut disturbances. The abslute length f the respective distances is indicated as a multiple f the inner diameter D f the pipe. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 6

7 R ,6 14 5,1 Fr types with MPM it is recmmended t prvide at least 10xD in frnt f the sensr and 5xD after the sensr. Cncerning the IL (withut MPM) the standard lengths (up t 45xD inlet) shuld be used. If this is nt pssible the run-in distance shuld take up 2/3 f the available measuring length and the run-ut distance 1/3 f it. Accessries fr installatin Fr munting f the SCHMIDT Vlume Flw Sensr IL 30.0xx, an extensive assembly f accessries is available t cver a wide range f applicatins (see Table 2). Type / article N. Drawing Munting Cnnecting cable fixed length: 5 m L=5m - Threaded ring, hexagn - Plug injectin-mulded - Wires: 5 x 0.34 mm 2 - Material: Stainless steel PUR, PVC Cnnecting cable ptinal length: x m x = m Step: 0.1 m 54 L=XXm - Threaded ring, hexagn - Wires:5 x 0,34 mm 2 - Material: Stainless steel PA, PUR, PP Free f halgen 2 Cupler scket Thread lcking system (VA) für Kabel- Fr cable- 4-6mm - Threaded ring, hexagn - Material: Stainless steel PA, PUR, PP - Cnnectin f leads: Blted (5 x 0.75 mm 2 ) Extended measuring sectins ½ : : ½ : : Type f thread: G and R - Material: Stainless steel (pipe) NBR 70 (O-rings) Table 2 2 Accrding t IEC Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 7

8 4 Electrical cnnectin The sensr features tw cnnectrs: Main cnnectr: - Cnnectin f vltage supply - Output f measuring signals Mdule cnnectr: Fr cnnectin f an ptinal extensin mdule. Figure 1 Main cnnectr This cnnectr is a 5-pin plug, type M12 (male, A-cded) with a thread fr the cnnecting cable 3 (pin assignment: Figure 2 and Table 3) Figure 2: View n cnnectr f sensr (male) Pin Designatin Functin Wire clur 1 Pwer +U S (+24 V) brwn 2 Analgue V N Vlume flw white 3 GND GND blue 4 Analgue T M Medium temperature black 5 Impulse Vlume grey Table 3 Pin assignment The specified lead clurs are valid fr cnnecting cables frm SCHMIDT Technlgy (see subchapter Accessries). During electrical installatin ensure that n vltage is applied and inadvertent activatin is nt pssible. The plug husing, and thus als a pssibly screen f a plugged cnnectin cable, is electrically cnnected t the metal husing f the sensr. The apprpriate prtectin class III (SELV) respective PELV (EN 50178) has t be cnsidered. 3 Spigt nut is n cnnecting cable Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 8

9 Pwer supply Fr prper peratin the sensr requires direct vltage with a nminal value f 24 V with permitted tlerance f ±10 %. Deviating values lead t deactivatin f measuring the vlume flw r even t defects and, therefre, shuld be avided. As far as it is functinally pssible, the LED indicatin reprts the faulty peratinal cnditins (see chapter 5). Only perate sensr within the defined range f perating vltage (U S = 24 V DC ± 10 %). Undervltage 4 may result in malfunctin; vervltage can lead t irreversible damage. Operating current f the sensr (impulse utput current nt included) is typically 90 (40) ma, maximum 300 (120) ma (IL in brackets). Specificatins fr perating vltage apply t the cnnectin at the sensr. Vltage drps generated due t line resistances must be cnsidered by the custmer. Wiring f analgue utputs Bth analgue utputs (vlume flw and temperature f medium) are designed as shrt-circuit prtected current interfaces (4 20 ma). The respective lad R L must be cnnected t the reference ptential (GND) f the sensr. Lad specificatin: R L 500 ; C L 10 nf Wiring f impulse utput The pulse utput (vlume) is designed as highside driver (P-MOSFET, pen drain) cnnected t the (reverse prtected) perating vltage. It is prtected by tw methds, a serial dide against higher external vltage as well as generally by an analgue current limitatin with a limit current f typical 50 ma (max. 65 ma). The lad has t be cnnected t GND. Mdule cnnectr The SCHMIDT Vlume Flw Sensr IL 30.0xx cmes with an additinal cnnectr (M12, female, A-cded, 5-pin) fr cnnecting ptinal expansin mdules (see Figure 1). Dn t cnnect anything ther t this prt than expansin mdules frm SCHMIDT Technlgy. 4 Fr U S < 15 V the electrnics shuts dwn. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 9

10 5 Signalling Light emitting dides The SCHMIDT Vlume Flw Sensr IL 30.0xx has fur Du-LEDs (see Figure 3) t indicate its peratinal status (Table 4): In errr-free peratin: Vlume flw (bar graph mde) Prblems in peratin: Detected errr cause LED 1 Figure 3 N. State LED 1 LED 2 LED 3 LED 4 1 Operatinal & vlume flw 5 % 5 2 Vlume flw > 5 % 3 Vlume flw > 20 % 4 Vlume flw > 50 % 5 Vlume flw > 80 % 6 Vlume flw > 100 % (= Overflw) 7 Sensr element defective 8 Supply vltage t lw 9 Supply vltage t high 10 Temperature f electrnics t lw 11 Temperature f electrnics t high 12 Temperature f medium t lw 13 Temperature f medium t high Legend LED ff LED shines green LED shines range LED flashes red (apprx. 2 Hz) Table 4 5 % f final value f measuring range f vlume flw Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 10

11 Analgue utputs Representatin f measuring range The measuring range f the crrespnding measuring value is mapped in a linear way t the signal range. Fr vlume flw measurement the measuring ranges frm zer t the variant-specific end f the measuring range V N,max (see Table 5). Vlume flw Temperature f medium I Out [ma] 21, I Out [ma] w N [%] T M [ C] V Table 5 N = V N,max 16 ma (I Out,V 4 ma) T N M = 80 C 16 ma (I Out,T M 4 ma) 20 C The measuring range f the medium temperature T M is specified between -20 C and +60 C. Nte regarding cmmissining: Nrmally the temperature utput indicates apprx. 12 ma because the typical prevailing rm temperature f 20 C crrespnds t abut half f the measuring range. Errr signalling 6 The interface utputs 2 ma. Exceeding measuring range f vlume flw Measuring values higher than V N,max are utput linearly up t 110 % f the signalling range (this crrespnds t the maximum utput f 21.6 ma, see left image in Table 5). Fr higher values the utput signal remains cnstant. Errr signalling desn t take place because damage f the sensr is unlikely. 6 In accrdance t NAMUR specificatin Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 11

12 Medium temperature beynd specificatin range Operatin beynd specified limits 7 can damage the measuring prbes and, therefre, is seen as a critical errr: Medium temperature belw -20 C: The analgue utput fr T M switches t errr signalling (2 ma). The measuring functin f vlume flw is switched ff; its analgue utput als reprts an errr (2 ma). Medium temperature abve +60 C: Up t 65 C the temperature is still utput linearly (crrespnds t 21 ma), e.g. t enable an vershting f a heating cntrl. The vlume flw is measured and displayed further n. Abve this critical limit the measurement f vlume flw is switched ff and its utputs are ging t errr (2 ma / lcked). The utput fr T M jumps directly t its maximum value f 22 ma which differs frm standard errr signalling. Impulse utput Signalling One impulse represents a defined vlume that has flwed. During the pulse signal itself, the utput transistr switches thrugh fr a fixed time (cnducting) therwise the transistr is lcked (high impedance). Pulse valence: IL ; IL MPM: 0.1 Nrm-m 3 IL MPM; IL MPM: 1.0 Nrm-m 3 Pulse duratin (fix): 1 s Errr signalling As lng as the analgue flw vlume utput signals errr (2 ma), the pulse utput is lcked (high impedance). 7 Switching hysteresis fr the threshld is apprx. 2 K. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 12

13 6 Cmmissining Befre applying supply vltage t the SCHMIDT Vlume Flw Sensr IL 30.0xx the fllwing checks have t be carried ut: Mechanical munting: All screws are tightened prperly. Suitable pressure prtectin measures are carried ut (e.g. sealing tape in the threads). Cnnecting cable: Fr measurements in media with verpressure check if all screws are tightened prperly and all mechanical cnnectins are pressure tight. Prper cnnectin in the field (switch cabinet r similar). Tight fit f spigt nut f the cnnectr f the cnnecting cable at sensr enclsure. If the sensr is in the crrect peratinal state after initializatin it switches int measuring mde. The indicatin f vlume flw (bth LEDs and signal utputs) jumps fr a shrt perid t maximum and settles after apprx. ne secnd at the crrect measuring value prvided the sensr prbe has medium temperature already. Otherwise, the prcess will prlng until the sensr has reached medium temperature. 7 Infrmatin cncerning peratin Ambient cnditin temperature The SCHMIDT Vlume Flw Sensr IL 30.0xx mnitrs the temperature f bth medium and electrnics. As sn as ne limit f the specified peratin ranges is exceeded, the sensr switches ff ne r bth measuring functins assciated with the medium depending n the situatin and reprt the crrespnding errr. As sn as prper peratinal cnditins are restred, the sensr resumes nrmal functin. Even a shrt-term ver- r undershting f the safety limit values can lead t permanent damage f the sensr which must be avided by all means. Even shrt-term exceedance r undershting f perating temperatures can cause irreversible damage t the sensr. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 13

14 Ambient cnditin pressure The SCHMIDT Vlume Flw Sensr IL 30.0xx is suitable fr clean, nn-cmbustible air and gases that cntain neither dust, abrasive particles r vapurs nr gaseus ils r chemical aggressive cmpnents. Depending n the cnsistency and cmpsitin, depsits r ther cntaminants may lead t falsificatin f the measured value and shuld be avided cercively (see chapter 8). Siling r ther depsits n the sensing elements cause false measurement results. Therefre, the sensr shuld be checked fr cntaminatins regularly and, if necessary, has t be cleaned r send in fr maintenance. When cleaning, use nly mild agents (such as isprpanl) and avid direct cntact f the sensr elements as far as pssible. The suitability f the sensr fr use in any nn-clean media must be checked in individual cases. Cndensing liquid fractins in gases r even immersin int liquids can damage the prbe and therefre must be avided strictly. Als, the significantly higher heating capacity f liquids distrts the measuring results seriusly (in this case a much higher vlume flw is detected and will be signalled). (Cndensing) liquid n the measuring prbes causes serius measurement distrtins and can als damage the sensr irreversibly. 8 Service infrmatin Trubleshting Pssible errrs (errr images) are listed in Table 6. Furthermre several causes and measures t eliminate the errr are described. Causes f any errr signaling have t be eliminated immediately. Exceeding r falling belw the permitted perating parameters can result in permanent damage t the sensr. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 14

15 Errr image Pssible causes Trubleshting N LED is shining All signal utputs are at zer Start sequence is repeated cntinuusly (all LEDs flashes simultaneusly in red - yellw - green) Prblems with supply U S: N U S available Wrng plarity (DC) U S < 15 V Sensr is defective U S unstable: Pwer unit cannt supply switch-n current Other cnsumers verlad pwer surce Wire resistance t high Sensr element defective Supply vltage U S < 21.6 V Supply vltage U S > 26.4 V Cnnectr screwed n crrectly? Supply vltage cnnected crrectly? Supply vltage at sensr plug available (cable break)? Pwer supply sufficient? Supply vltage at sensr stable? Pwer supply sufficient? Vltage lsses ver cable negligible? Send in sensr fr repair Increase supply vltage Decrease supply vltage Signal V N is t large / small Electrnic temperature t lw Electrnic temperature t high Medium temperature t lw Medium temperature t high Measuring medium des nt crrespnd t air Sensr elements are siled Sensr elements are mistened Signal V N is fluctuating U S unstable Installatin cnditins: Run-in r run-ut distance is t shrt Strng fluctuatins f pressure r temperature Analgue signal permanently at maximum Lad resistance f signal utput is at +U S Increase temperature f envirnment Decrease temperature f envirnment Increase medium temperature Reduce medium temperature Gas crrectin cnsidered? Send in sensr fr cleaning / maintaining Dry sensr elements Check vltage supply Check installatin cnditins Check perating parameters Cnnect lad resistance t GND Table 6 LED ff LED shines green LED shines range LED flashes red (apprx. 1 Hz) Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 15

16 Transprt / shipment f the sensr Fr transprtatin r dispatching f the sensr, it must be well prtected against vibratins and shcks. Ideally, the sensr is shipped with fitted prtective caps and in its riginal packaging. Siling, mechanical stress and / r tuching the sensr elements shuld be avided. Calibratin If the custmer has made n ther prvisins, we recmmend repeating the calibratin at a 12-mnth interval. Fr this purpse the sensr must be sent in t the manufacturer. A calibratin can be carried ut nly if the basic sensr, i.e. withut munted extended sectins r ther pipes, is sent in. Als make sure that there are n damages especially cncerning the sensr elements and the inner munting threads. Spare parts r repair N spare parts are available, since a repair is nly pssible at the manufacturer's facility. In case f defects, the basic sensr must be sent in t the supplier fr repair. Any ther installed parts like pipes r measurement extensins have t be remved. Als a cmpleted declaratin f decntaminatin, in cnjunctin with all shipping dcuments, must be attached at the utside f the shipment package. The apprpriate frm Declaratin f decntaminatin is enclsed t the sensr. Alternatively it can be dwnladed frm If the sensr is used in systems imprtant fr peratin, we recmmend keeping a replacement sensr in stck. Test and material certificates Every new sensr is accmpanied by a certificate f cmpliance accrding t EN Material certificates are nt available. Upn request, we shall prepare, at a charge, a calibratin certificate fr new devices r in case f a re-calibratin. The certificate is traceable t natinal standards. Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 16

17 9 Technical data Sensr technlgy Thermal inline vlume flw sensr (with MPM 8 ) Measurands Standard 9 vlume flw V N Temperature f medium T M Measuring ranges 10 V N ½ : Nrm-m 3 /h 1 : Nrm-m 3 /h 1½ : Nrm-m 3 /h 2 : Nrm-m 3 /h Measuring accuracy V N ±(3 % f measured value % f fmr 11 ) Respnse time (t 90) V N Apprx. 5 s Measuring accuracy T M Measurement directin Medium t be measured Cmpressin strength Humidity range ±2 K (vlume flw > 2 % f fmr) Unidirectinal Clean (cmpressed-) air, nitrgen; ther gases n request 16 bar (verpressure) Operating temperature -20 C +60 C 95 % rel. humidity, nn-cndensing Installatin Inner threads DN 15 DN 50 (G½ G2) Analgue utput Impulse utput Current interface (shrt circuit prtected) Signal range: 4 20 ma (2 ma errr signal) Lad: R L 500 / C L 10 nf Highside driver (pen drain, shrt circuit prtected) Pulse valence: 0.1 / 1.0 Nrm-m 3 Pulse duratin: 1 s (transistr cnducting) Pulse high level 12 : > U S 1 V Current limit: typ. 50 ma (max. 65 ma) Display 4 dual LED (quasi-analgue display f V N / sensr status) Supply Vltage U S 24 V DC ± 10 % Current cnsumptin (withut impulse utput) IL : IL 30.0xx MPM: typ. 40 ma, max. 120 ma typ. 90 ma, max. 300 ma Electrical Cnnectin Main cnnectr: M12, male, A-cded, 5-pin Mdule cnnectr: M12, female, A-cded, 5-pin Length f cnnectin cable Max. 100 m (recmmended; bserve wire resistance) Type / class f prtectin IP 64 (husing) / III (SELV) r PELV (EN 50178) Material Andized aluminium 8 MPM: Multipint-Measurement; except IL with nly ne measurement pint 9 Based n standard (Nrm) cnditins T N = 20 C and p N = hpa 10 Minimal value f measuring range = lwer detectin limit 11 fmr: final value f measuring range 12 Current limiting nt active Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 17

18 10 Dimensins Type H ges. H 1 B Article number IL IL MPM IL MPM IL MPM All dimensins in mm Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 18

19 11 Declaratin f Cnfrmity Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 19

20 SCHMIDT Technlgy GmbH Feldbergstraße St. Gergen Germany Phne +49 (0)7724 / Fax +49 (0)7724 / sensrs@schmidttechnlgy.de URL Instructins fr Use - SCHMIDT Vlume Flw Sensr IL 30.0xx page 20