Oscillation Flow Meter for Gases measuring monitoring analysing Measuring ranges: 0.2 to 000 m 3 /h air pmax: PN 0, tmax: 0 C Connection: flange DN 25 DN 00 : Cast Iron, steel or stainless steel Accuracy: ±1.5% of measured value No moving parts Longterm stability KOBOLD companies worldwide: ARGENTINA, AUSTRIA, BELGIUM, CANADA, CHILE, CHINA, CZECHIA, FRANCE, GERMANY, GREAT BRITAIN, INDIA, INDONESIA, ITALY, MALAYSIA, MEXICO, NETHERLANDS, POLAND, SINGAPORE, SLOVAKIA, SPAIN, SWITZERLAND, THAILAND, USA, VENEZUELA, VIETNAM KOBOLD Messring GmbH Nordring 222 D719 Hofheim/Ts. +9(0)6192 2990 Fax +9(0)6192 2339 EMail: info.de@kobold.com Internet: www.kobold.com Model: DOG1 DOG3 3
Oscillation Flow Meter for Gases Model: DOG1 and DOG3 Description The KOBOLD flow meter DOG1 and DOG3 are used for noncontact flow measurement of gases. The medium flows through an orifice in a tube. Bypass bores are located at the sides. The dynamic pressure at the orifice causes part of the gas volumetric flow to flow into the bypass. The division ratio remains constant over the whole measuring range. FluidistorOscillator The bypass channel contains the Fluidistor Oscillator the measuring cell itself. When the gas flows through the measuring cell, a gas column oscillates in a ushaped channel mounted to the left and right. This oscillation frequency is proportional to the flow velocity and thus to the total volume flow. The oscillation frequency is sensed with a hot wire sensor. An electrical alternating signal is generated that is displayed in the seriesconnected electronics. Application The inner, connected flow channels are generously dimensioned. The constant changes of direction of the flow in the channels have a selfcleaning effect. The devices are therefore extremely dirt resistant and have no consumables. The mounting position can be chosen at will. When condensate forms in the gas, the horizontal mounting position with the sensing element pointing upwards is recommended. The gas flow velocity anywhere in the pipework upstream of the flow meter should not exceed the sound velocity. Pressure drops above critical and pulsating streams must be avoided. The recommended inlet pipe section is 10xDN and the outlet pipe section 5xDN. Areas of application Compressed air Natural gas, biogas, fermentation gas Propane Hydrogen gas Nitrogen Argon Technical details Measuring accuracy: ±1.5% of meas. value (at Q t 100%*) ±5% of measured value (at 1% Q t *) *The lower limit Q t depends on the density Q t = % at density 1 kg/m 3 Q t = % at density 2 kg/m 3 Q t = 2% at density kg/m 3 Q t = 1% at density kg/m 3 Repeatability: 0.1% of measured value Max. temperature:...+0 C...+60 C (ExVersion) Ambient temperature: max. 0 C 25...+60 C (ExVersion) Operating pressure: DOG11/.., DOG31/32..: PN 16 DOG/13.., DOG32/33..: PN 0 Span: DOG1..: 1: 100 DOG3..: 1: 50 Sensor: hotwire, RDC Pulses: max. Hz Protection: IP s Case DOG11..: cast Iron GG25 DOG13..: Steel St. 35. DOG33..: Steel St. 523N DOG/32..: St. steel 1.571 Orifice: stainless steel 1.36 Sensing element: polyphenylene sulfide (PPS) Sensor: Platinum Gaskets: silicone, nitrile or FPM Electronics Electrical connection: Cable with PGthread Display: digit LCD display, counter Power supply: 230 V AC 10%, +%/62 Hz Input: hot wire sensor Pulse 1: V DC, max.100 ma, Open Collector Pulse 2: floating contact decadic 250 V AC, max. 3 A Analogue : 0 ma or ma max. 500 Ω Ambient temperature: 0 to +50 C Permissible distance: max. 50 m to DOG1...DOG3 Connection cable: minimum 0.5 mm 2, screening recommended ExVersion: II 1G EEx ia IIC T www.kobold.com
Oscillation Flow Meter for Gases Model: DOG1 and DOG3 Order details for DOG1 with flange (example: DOG1101L F25N S ER00) Meas. range m 3 /h air cast Iron Model Connection flange Gasket Evaluat. electronics steel stainless steel Standard PN 16 only GG, VA Special PN 0 only St., VA 0.35...35 0.7...70 DOG1101L.. DOG1102L.. DOG1103L.. DOG01L.. DOG02L.. DOG03L.. F25N=DN25 F25S=DN25 0.6...60 1.0...100 DOG130L.. DOG1305L.. DOG1306L.. F32N=DN32 F32S=DN32 0.9...90 2.0... DOG1107L.. DOG110L.. DOG1109L.. DOG07L.. DOG0L.. DOG09L.. F0N=DN0 F0S=DN0 1.1...110 2.5...250 DOG1110L.. DOG1111L.. DOG11L.. DOG10L.. DOG11L.. DOGL.. F50N=DN50 F50S=DN50 with external electronics 0.9...90 1.7...170.5...50 1...10.5...50.0...00 2.7...270 6.5...0 10...1000...00...00 15...1500 6...600...00 30...0 DOG1116L.. DOG1117L.. DOG11L.. DOG1119L.. DOG10L.. DOG11L.. DOG1313L.. DOG131L.. DOG1315L.. DOG1322L.. DOG1323L.. DOG132L.. DOG1325L.. DOG1326L.. DOG1327L.. DOG13L.. DOG1L.. DOG15L.. DOG16L.. DOG17L.. DOGL.. DOG19L.. DOGL.. DOG21L.. DOG22L.. DOG23L.. DOG2L.. DOG25L.. DOG26L.. DOG27L.. FN=DN F0N=DN0 F1HN=DN100 F1ZN=DN5 F1FN=DN150 FS=DN F0S=DN0 F1HS=DN100 F1ZS=DN5 F1FS=DN150 S=Silicone N=Nitrile V=FPM...A display, no EX protection,...d and total, no EX protection,...e display, with EX protection,...00 25...2500 60...6000...0 0...000 75...7500 DOG132L.. DOG1329L.. DOG1330L.. DOG1331L.. DOG1332L.. DOG1333L.. DOG2L.. DOG29L.. DOG30L.. DOG31L.. DOG32L.. DOG33L.. F2HN=DN F2FN=DN250 F2HS=DN* F2FS=DN250*...X and total, with EX protection, with analogue and pulse 30...0 50...5000 113...13 000 DOG133L.. DOG1335L.. DOG1336L.. F3HN=DN F3HS=DN 0...000 70...7000 10...1 000 DOG1337L.. DOG133L.. DOG1339L.. F3FN=DN350 50...5000 100...10 000 160...16 000 DOG130L.. DOG131L.. DOG132L.. FHN=DN00 *not for DOG (stainless steel) Please state the exact operating conditions (gas types, flow volume, pressure, temperature, installation position etc.) when ordering. www.kobold.com 5
Oscillation Flow Meter for Gases Model: DOG1 and DOG3 Order details for DOG3 with Wafer design (example: DOG3301L F25N S A) Meas. range m 3 /h air steel Model stainless steel Connection Wafer design Standard PN 16 Special PN 0 Gasket Evaluat. electronics 0... 0.7...35 1...70 DOG3301L.. DOG3302L.. DOG3303L.. DOG31L.. DOG32L.. DOG33L.. F25N=DN25 F25S=DN25 0... 1...90 3.5...0 DOG3307L.. DOG330L.. DOG3309L.. DOG37L.. DOG3L.. DOG39L.. F0N=DN0 F0S=DN0 0... 2.2...105 5...250 1...90 3.5...170 9...50 2...135 6... 16...00 DOG3310L.. DOG3311L.. DOG33L.. DOG3313L.. DOG331L.. DOG3315L.. DOG3316L.. DOG3317L.. DOG33L.. DOG3210L.. DOG3211L.. DOG32L.. DOG3213L.. DOG321L.. DOG3215L.. DOG3216L.. DOG3217L.. DOG32L.. F50N=DN50 FN=DN F0N=DN0 F50S=DN50 FS=DN F0S=DN0 with external electronics...a display, no EX protection, 6... 1...700...900...00...900 0...0...600 25...50 60...0 2...00 50...2500 0...6000 0...0 0...000 150...7500 60...0 100...5000... 000 DOG3319L.. DOG33L.. DOG3321L.. DOG3322L.. DOG3323L.. DOG332L.. DOG3325L.. DOG3326L.. DOG3327L.. DOG332L.. DOG3329L.. DOG3330L.. DOG3331L.. DOG3332L.. DOG3333L.. DOG333L.. DOG3335L.. DOG3336L.. DOG3219L.. DOG32L.. DOG3221L.. DOG3222L.. DOG3223L.. DOG322L.. DOG3225L.. DOG3226L.. DOG3227L.. DOG322L.. DOG3229L.. DOG3230L.. DOG3231L.. DOG3232L.. DOG3233L.. DOG323L.. DOG3235L.. DOG3236L.. F1HN=DN100 F1ZN=DN5 F1FN=DN150 F2HN=DN F2FN=DN250 F3HN=DN F1HS=DN100 F1ZS=DN5 F1FS=DN150 F2HS=DN F2FS=DN250 F3HS=DN S = Silicone N = Nitrile V =FPM...D and total, no EX protection,...e display, with EX protection,...x and total, with EX protection, with analogue and pulse 0...000 10...7000...1 000 DOG3337L.. DOG333L.. DOG3339L.. DOG3237L.. DOG323L.. DOG3239L.. F3FN=DN350 F3FS=DN350 100...5000...10 000 00... 000 DOG330L.. DOG331L.. DOG332L.. DOG3L.. DOG321L.. DOG322L.. FHN=DN00 FHS=DN00 Please state the exact operating conditions (gas types, flow volume, pressure, temperature, installation position etc.) when ordering. 6 www.kobold.com
Oscillation Flow Meter for Gases Model: DOG1 and DOG3 Pressure loss/ flow The diagram applies for gases with a density of air at NPT (0 C and 1000 mbar). The pressure loss is always proportional to the density of the gas. For example, the pressure loss doubles at 100% higher operating pressure. Calculating the actual density The actual density can be calculated with the following formula: D= D 0 i P i T 0 T D 0 = density at 1 bar abs. and 0 C (= 273 K) T = temperature in K (= C + 273 for example C = 273 + = 293 K T 0 =273 K P = operating pressure in bar (absolute pressure) Dimensions and weight DOG1 L H Calculating the norm flow Q N = Q P 273 1,013 T Q N = norm flow at 1.013 bar abs. and 0 C Q = operating flow P = operating pressure in bar (absolute pressure) T = operating temperature in K D Dh Ds DN L D Dh Ds Number of holes H H with AVF Weight [kg] 25 32 0 50 0 100 5 150 250 350 00 360 350 or 500 350 50 500 500 500 115 10 150 1 5 2 250 25 30 05 60 5 50 5 100 110 5 15 160 0 210 295 355 10 70 525 1 22 22 26 26 26 30 www.kobold.com 16 16 130 10 10 15 155 160 230 255 305 330 360 30 1 175 175 0 190 195 235 2 290 315 30 3 395 15 10 11 13 1 23 26, 2 36 53 70 3 90 7
Oscillation Flow Meter for Gases Model: DOG1 and DOG3 Dimensions and weight DOG3 Dimensions of electronics 2 193 135 DN 50 DN mm D mm Weight kg 25 32 0 50 0 100 5 150 250 350 00 10 11 13 1 23 2 36 53 70 90 0 Accessory Valve in the bypass (between measuring tube and measuring cell) for easy sensor changing and for protection of the sensor when starting the installation. www.kobold.com