Flow sensor for liquid media type 230

Transcription

1 Flow sensor for liquid media type 0 Flow range l/min Nominal diameters DN 0 / / 0 / Temperature measurement ÀC The flow sensor type 0 is based on the Kármán vortex trail. You can choose between various versions as integrated temperature measurement. The type 0 has a rugged construction of red brass. With no moving parts the flow sensor is not sensitive to debris, has marginal pressure loss and high accuracy. Flow measuring with voltage, current or frequency output Temperature non-sensitive measuring principle Excellent media resistance (measuring element not in contact with the media) CE conformity Wide application temperature range Marginal loss of pressure Measuring element not sensitive to debris Zinc free red brass housing Drinking water approval Huba Control type 0 - Technical data subject to change - Edition 09/0 /6

2 Technical Overview Flow measurement Measuring principle Vortex Piezoelectric sensor element Measuring range l/min Nominal diameters DN 0 / / 0 / Accuracy at < 0% fs (water) < % fs Accuracy at > 0% fs (water) < % measuring value Response time Immediately Signal delay < 00 ms Frequency output Therefore suitable for spigot use. Response time < ms Signal delay < s Analogue output Response time < 00 ms Temperature measurement Measuring principle Resistance PT000 Measuring range ÀC T = 0 ÀC μ 0. K Accuracy class B D EN T 0 ÀC μ 0. K μ 0.00 * T Measuring range ÀC V Accuracy μ 0. K μ 0.00 * T Calculation temperature T (ÀC) = +0 ÀC 0 V * UOUT_T - ÀC Temperature influences Self-heating at temperature sensor K/mW Conduction resistance to connector 0.8 Ohm Operating conditions Medium Suitable for heating circuit water with the usual additives Drinking water Other medium on request Media < + ÀC temperature Ambient ÀC Storage ÀC (for lifetime) bar at +0 ÀC (for lifetime) 6 bar at +00 ÀC Max. pressure and (for 600 hours) bar at + ÀC medium temperature (for hours) bar at +0 ÀC (max. test pressure) 8 bar at +0 ÀC Cavitation The following equation is valid to prevent cavitation: P abs outlet / P difference >. Materials in contact with medium (FDA-conform) Sensor paddle Case Sealing material ETFE Red brass / PA6T/6I (0% GF) EPDM (perox.) Electrical overview Frequency output Voltage output Current output Power supply U.7... VDC.... VDC 8... VDC Output Frequency square pulse signal UOUT_Q_frequency < > U - 0. V Flow (Q) Analogue signal U OUT_Q oder I OUT V... 0 ma Output Resistant signal R OUT PT000 PT000 class B D EN 607 temperature (T) Voltage signal U OUT_T V Electrical connection and protection class Mx (IP 6) Mx (IP 6) Mx (IP 6) Load agianst or < ma / < 00 nf < 6 ma / < 00 nf ) < (U - 8 V) / 0 ma Current consumption load free (I ) < ma < ma Weight DN 0 outside thread L ~ 0 g DN outside thread A ~ 0 g outside thread L ~ 0 g DN 0 outside thread A ~ 0 g outside thread L ~ 0 g DN outside thread A ~ 0 g outside thread L ~ 600 g Test / Admissions Drinking water approval Electromagnetic compatibility CE-conform acc. to EN 66-- Packaging Single packaging Minimum life span on high flow rate and high temperature Mindestlebensdauer bezogen auf Durchfluss und hohe Medien-Temperaturen Temperature in ÀC Temperatur in C Flow in % Durchfluss in % Std hours 0 Std std 00 Std std 0. Jahr year Jahr year 0 Jahre year ) against only /6 Huba Control type 0 - Technical data subject to change - Edition 09/0

3 Nominal diameters dependent variables Nominal diameters Connection Measuring range Quantity per puls Flow range Characteristic line frequency output Frequency range Characteristic line voltage outout Characteristic line current output Pressure drop ), ) DN 0 Outside thread heavy.8... l/min.78 ml m/s * f Hz Q =. * U OUT_Q Q =.000 * (l - ma).0 * Q DN 0 Outside thread heavy l/min.8 ml m/s * f Hz Q =.0 * U OUT_Q Q =.00 * (l - ma).0 * Q DN Outside thread small.998 ml 0.8 * f Hz l/min m/s Outside thread heavy.97 ml * f Hz Q =.0 * U OUT_Q Q =. * (l - ma) 6.70* Q DN 0 Outside thread small 6.09 ml 0.69 * f Hz l/min m/s Outside thread heavy 6.07 ml * f Hz Q = 8. * U OUT_Q Q =. * (l - ma).0 * Q DN Outside thread small. ml * f l/min m/s Outside thread heavy. ml 0.70 * f Hz Q = * U OUT_Q Q = 9.7 * (l - ma) 0.9 * Q Order Variantenplan code selection table 0. X X X X X X X Version Flow 9 Flow and temperature (PT000) 8 Flow and temperature ( V) 6 Nominal diameters and DN l/min. 0 L flow range DN l/min. L DN l/min. DN l/min. 0 DN l/min. Output and power supply Frequency output (Square pulse signal).7... VDC 8,9 Analogue signal V.... VDC Analogue signal... 0 ma 8... VDC 8,9 Electrical connection Connector Mx - or -pole (condensation protection) 9 Connector Mx - or -pole (condensation protection) 8,6 Sealing material EPDM Ethylene propylene rubber (peroxidically cross-linked) Red brass body Red brass armature outside thread A (see dimension diagram) A Red brass armature outside thread L (see dimension diagram) L Accessories ) Order number Straight-wire box for connector Mx with cable -pole 00 cm 60 Corner-wire box for connector Mx with cable -pole 00 cm 60 Straight-wire box for connector Mx with cable -pole 00 cm (with temperature) 6 Corner-wire box for connector Mx with cable -pole 00 cm (with temperature) 6 Straight-wire box for connector Mx screwing terminal 0 Dimension diagram DN 0,, 0, DN0 L 7. G ¾ 6 DN A 0 9. G ¾ 7 DN L G 7 DN0 A G 86 DN0 L G ¼ 86 DN A G ¼ 09 DN L G ½ 09 ) incl. xdi inlet and outlet side ) Pv in Pa; Q in l/min ) Accessories supplied loose Huba Control type 0 - Technical data subject to change - Edition 09/0 /6

4 Tube mounting instructions Consider the following to ensure the correct function of the sensor. Only diameter changes from large to small are allowed. Avoid repeated elbows in the same level at entryside minimum xdn for alternative elbows minimum 0.xDN for recommended 90À elbow with min. R.8xDN min xdn Electrical connection Connector Mx without temperature measurement OUT Hz Frequency output current output A V OUT voltage output OUT Q Pin Colour brown blue black brown white blue black gray Connector Mx with temperature measurement A T Ω T Hz T Ω T T Ω T OUT OUT Q V OUT T OUT Q V V Frequency output with PT000 current output with PT000 voltage output with PT000 voltage output with temperature output V /6 Huba Control type 0 - Technical data subject to change - Edition 09/0

5 Influence of glycol With the following definitions we are able to correct the influence of media with higher viscosity than water (= media viscosity >.8 cst) in order to reach a measuring accuracy of % fs in the range of.8 - cst and of % in the range of - cst (υ = viscosity in cst). Definition of viscosity of glycol-water-compound Kinematic Kinematische Viskosität Ethylenglykol Wasser viscosity ethylene glycol water Kinematic Kinematische Viskosität Propylenglykol Wasser viscosity propylene glycol water Temperature Temperatur in C ÀC % 0% 0% 0% 0% 0% 60% 70% Temperature Temperatur in C ÀC % 0% 0% 0% 0% 0% 60% viscosity Viskosität in cst in viscosity Viskosität in cst in Definition of respond threshold Q min Definition of characteristic line formula Q = k * f - Q 0 Minimal detektierbarer Durchfluss detectable flow Einfluss der Viskosität auf Q Influence on viscocity Q0 0 Minimaler Durchfluss in l/min flow l/min 0 0 DN0 DN DN0 DN characteristic Q0 in Kennlinienformel in l/min line formula DN0 DN DN0 DN viscosity Viskosität in cst in viscosity Viskosität in cst in Formula respond threshold Q min in l/min < DN 0 not possible DN 0: Q min = υ DN : Q min = υ +. DN 0: Q min = υ +.0 DN : Q min = υ Formula characteristic line for Q > Q min in l/min < DN 0 not possible Frequency output: DN0: Q = 0.08 * f 0.0υ DN: Q = 0.8 * f 0.υ + 0. DN0: Q = 0.7 * f 0.υ + 0. DN: Q = * f 0.80υ Voltage output V DN0: Q =. * UOut 0.0υ DN: Q =.0 * UOut 0.υ + 0. DN0: Q = 8. * UOut 0.υ + 0. DN: Q =.0 * UOut 0.80υ Current output... 0 ma (I in ma) DN0: Q =.000 * (I ma) - 0.0υ DN: Q =. * (I ma) - 0.υ + 0. DN0: Q =. * (I ma) - 0.υ + 0. DN: Q = 9.7 * (I ma) υ Huba Control type 0 - Technical data subject to change - Edition 09/0 /6

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