OEM Flow sensor for liquid media type 200

Transcription

1 OEM Flow sensor for liquid media type 200 Flow range l/min Nominal diameters DN 6 / 8 / 10 / 15 / 20 / 25 Temperature measurement ÀC The flow sensor type 200 is based on the Kármán vortex trail. Vortex trail principle and is available in various options with and without temperature measurement. With no moving parts the flow sensor is not sensitive to debris, has marginal pressure loss and high accuracy. Low cost product with high levels of accuracy Temperature non-sensitive measuring principle Excellent media resistance (measuring element not in contact with the media) Wide application temperature range Marginal loss of pressure Measuring element not sensitive to debris Direct temperature measurement in the medium with PT1000 or NTC Drinking water approval KTW, W270, WRAS 1/9

2 Technical overview Flow measurement Measuring principle Vortex Piezoelectric sensor element Measuring range l/min Nominal diameters DN 6 / 8 / 10 / 15 / 20 / 25 Accuracy at < 50% fs (water) < 1% fs Accuracy at > 50% fs (water) < 2% measuring value Response time Immediately Signal delay < 100 ms Therefore suitable for spigot use. Response time < 5 ms Temperature measurement (> DN 8) Measuring principle PT1000 NTC Temperature influences Resistance Measuring range Accuracy Class B DIN EN Measuring range NTC ÀC Accuracy β = 4050 Self-heating at temperature sensor Conduction resistance to T = 0 T 0 T = +25 T < +25 T > +25 ÀC PT1000 NTC ÀC μ 0.3 K μ 0.3 K μ * T ÀC μ 0.7 K μ 0.7 K μ * T μ 0.7 K μ * T 1 K/mW 0.8 Ohm Operating conditions Medium Suitable for heating circuit water with the usual additives Drinking water Other medium on request Media < +125 ÀC Temperature Ambient ÀC Storage ÀC (for lifetime) 12 bar at +40 ÀC (for lifetime) 6 bar at +100 ÀC Max pressure and (for 600 hours) 4 bar at +125 ÀC medium temperature (for 2 hours) 4 bar at +140 ÀC (max. test pressure) 18 bar at +40 ÀC Cavitation The following equation is valid to prevent cavitation: P abs_oulet / P difference > 5.5 Materials in contact with medium (FDA-conform) Sensor paddle Case with damming body Sealing material ETFE PA6T/6I (40% GF) EPDM (perox.) Electrical overview Power supply UIN 5 VDC μ5% Output flow (Q) Frequency Square pulse signal UOUT_Q_Frequency < > 4.75 V Output temperature (T) Resistant signal ROUT PT1000 PT1000 class B DIN EN ROUT NTC NTC ÀC; β = 4050 Electrical connection Connector RAST 2.5 / 2.54 IP 20 and protection class Connector M12x1 IP 65 Load against or IN > 10 kohm / < 10 nf Current consumption I IN load free standard < 6 ma raised noise resistant < 10 ma Weight DN 6 / 8 DN 10 DN 15 DN 20 DN 25 Test / Admissions Drinking water approval Electromagnetic compatibility ~ 47 g ~ 57 g ~ 68 g ~ 92 g ~ 100 g KTW / W270 / WRAS acc. to EN (no protection at surge) Packaging (multiple packaging) Connection copper tube Outside thread K Outside thread G DN 6 Blister 30x Blsiter 30x DN 8 / 10 Blister 30x Blister 30x Blister 30x DN 15 Blister 30x Blister 30x Blister 20x DN 20 Blister 20x Blister 20x Blister 15x DN25 Blister 15x Blister 15x 2/9

3 Nominal diameters dependent variables Nominal diameters Connection Measuring range Quantity per puls Flow rate DN 6 Outside thread heavy Characteristic line frequency output 1), 2) Frequency range Pressure drop l/min ml m/s * f Hz 240 * Q ml * f Hz DN 8 Outside thread heavy l/min ml m/s * f Hz Connection copper tube ml * f Hz * Q ml * f Hz DN 10 Outside thread heavy l/min ml m/s * f Hz Connection copper tube ml * f Hz * Q ml * f Hz DN 10 Outside thread heavy l/min ml m/s * f Hz Connection copper tube ml * f Hz * Q ml * f Hz DN 15 Outside thread heavy l/min ml m/s * f Hz Connection copper tube ml * f Hz 6.70* Q ml * f Hz DN 20 Outside thread heavy l/min ml m/s * f Hz Connection copper tube ml * f Hz 2.50 * Q 2 DN ml * f Hz l/min m/s Outside thread heavy ml * f Hz 0.92 * Q 2 Minimum life span on high flow rate and high temperature Temperature in ÀC Temperatur in C Durchfluss Flow in % in % 2 Std hours 10 hours Std 100 hours Std 0.1 year Jahr 1 Jahr year 10 year Jahre 1) incl. 3xDi inlet and outlet side 2) Pv in Pa; Q in l/min 3/9

4 Order code selection table 200. X X X X X X X Version Flow 9 Flow and temperature (PT1000) 8 1 Flow and temperature (NTC) 7 1 Nominal diameters / DN l/min K,G flow range DN l/min DN l/min. 1 0 DN l/min. 1 1 DN l/min. 1 5 DN l/min. 2 0 DN l/min. 2 5 K,G Output / power supply Frequency output, VDC (Square pulse signal) 5 VDC standard 9 0 Frequency output, VDC (Square pulse signal) 5 VDC raised noise resistant 1 Electrical connection 3-pole connector RAST x3-pole connector RAST 2.5 7, pole connector RAST 2.5 (condensation protection) 9 2 2x3-pole connector RAST 2.5 (condensation protection) 7, pole circular connector M12x1 (condensation protection) pole circular connector M12x1 (condensation protection) 7,8 1 5 Sealing material EPDM Ethylene propylene rubber (peroxidically cross-linked) 1 Tube connection Plastic PA6T/6I connection copper tube (max. DN 20) N Plastic PA6T/6I outside thread K (see dimension diagram) K Plastic PA6T / 6I outside thread G (see dimension diagram) G Accessories 1) Order number Connection kit 2) DN 8, 10 with copper tube Connection kit 2) DN 8, 10 with adapter Rp ⅜ Stainless steel /AISI Connection kit 2) DN 15 with copper tube Connection kit 2) DN 15 with adapter Rp ½ Stainless steel /AISI Connection kit 2) DN 20 with copper tube Connection kit 2) DN 20 with adapter Rp ¾ Stainless steel /AISI Connector RAST 2.5 with cable 3-pole 30 cm Connector RAST 2.5 with cable 3-pole 110 cm Straight-wire box for connector M12x1 with cable 3-pole 200 cm Corner-wire box for connector M12x1 with cable 3-pole 200 cm Connector RAST 2.54 with cable 2x3 pole 110 cm (with temperature) Straight-wire box for connector M12x1 with cable 5-pole 200 cm (with temperature) Corner-wire box for connector M12x1 with cable 5-pole 200 cm (with temperature) Straight-wire box for connector M12x1 screwing terminal 5-pole Clip for DN 8, Clip for DN Clip for DN O-Ring for DN 8, DN 10 EPDM Œ x 2.62 Copper tube and adapter O-Ring for DN 15 EPDM Œ x 2.62 Copper tube and adapter O-Ring for DN 20 EPDM Œ x 2.62 Copper tube and adapter O-Ring for DN 25 EPDM Œ 31 x 3 (as a replacement, already assembled) Connection copper tube for DN 8, 10 L=150 mm Connection copper tube for DN 15 L=150 mm Connection copper tube for DN 20 L=150 mm Adapter for DN 8 und DN 10 Rp ⅜ Stainless steel /AISI Adapter for DN 15 Rp ½ Stainless steel /AISI Adapter for DN 20 Rp ¾ Stainless steel /AISI AMP connector 3) Manufacturers order number Colour for flexible wire grey 7 x 0.20 mm = 0.22 mm 2 12 x 0.20 mm = 0.35 mm beige 7 x 0.25 mm = 0.35 mm 2 1) Accessories supplied loose 2) Connection set includes: 2x Clip, 2x Copper tube or Adapter and 2x O-Ring 3) To order seperately directly from the manufacturer. Find further information in the manufacturers specification no /9

5 Dimension diagram DN 8, 10, 15, 20 1a 5a 2a 3a 4a 6a 1a 2a 3a 4a 5a 6a DN DN Dimension diagram DN 6, 8, 10, 15, 20, 25 1d 6d 2d 3d 3d 4d 1d 2d 3d 4d 5d 6d DN6 K G ½ DN6 G G ¾ DN8 K G ½ d DN8 G G ¾ DN10 K G ½ DN10 G G ¾ K G ¾ G G K G G G 1¼ DN25 K G 1¼ DN25 G G 1½ /9

6 Admissible locking torque DN6/8/10 G ½ DN6/8/10 G ¾ G ¾ G1 G1 G1 ¼ DN25 G1 ¼ DN25 G1 ½ M min [Nm] M max [Nm] Accessories DN 8, 10, 15, 20 adapter c inside thread clip 2c o-ring to adapter 4c 3c 7c 6c 5c 8c 9c 1c 2c 3c 4c 5c 6c 7c 8c 9c DN8 22 DN Rp ⅜ DIN 2999 lenght min. 9 Rp ⅜ DIN 2999 lenght min. 9 Rp ½ DIN 2999 length min Rp ¾ DIN 2999 lenght min Geometry of customers connection tube DN 8, 10, 15, 20 o-ring 1b clip 6b 5b 4b bevelled edge min b 7b 3b 8b 9b 1b 2b 3b 4b 5b 6b 7b 8b 9b DN8 Œ 13.95x262 2 μ μ 0.2 Œ 13 μ 0.2 Œ μ 0.08 Œ μ DN10 Œ 13.95x262 2 μ μ 0.2 Œ 13 μ0.2 Œ μ 0.08 Œ μ Œ 17.86x μ μ 0.3 Œ 16 μ 0.2 Œ Œ 21.89x μ μ 0.3 Œ 20 μ 0.2 Œ Œ μ Œ μ /9

7 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 5xDN for alternative elbows minimum 0.5xDN for recommended 90À elbow with min. R 1.8xDN Electrical connections IN + OUT Hz RAST 2.5 without temperature output IN + OUT Hz OUT T1 Ω T2 IN Connector 2x3-poles with temperature output OUT IN T2 T1 IN Hz 3 OUT Connector M12x1 without temperature output IN Hz OUT T2 T1 Ω Connector M12x1 with temperature output Pin Colour 1 brown 3 1 blue 4 black 1 brown 2 white 3 2 blue 4 black 5 gray 7/9

8 Influence of glycol With the following definitions we are able to correct the influence of media with higher viscosity than water (= media viscosity > 1.8 cst) in order to reach a measuring accuracy of 3% fs in the range of cst and of 4% in the range of 4-14 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 % 10% 20% 30% 40% 50% 60% 70% Temperature Temperatur in C ÀC % 10% 20% 30% 40% 50% 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 Q Minimaler Durchfluss in l/min flow l/min DN10 DN25 characteristic Q0 in Kennlinienformel in l/min line formula DN10 DN viscosity Viskosität in cst in viscosity Viskosität in cst in Formula respond threshold Q min in l/min < DN 10 not possible DN 10: Q min = υ DN 15: Q min = υ DN 20: Q min = υ DN 25: Q min = υ Formula characteristic line for Q > Q min in l/min < DN 10 not possible Frequency output: DN10: Q = * f 0.40υ : Q = * f 0.45υ : Q = * f 0.55υ DN25: Q = * f 0.80υ /9

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