Product Brochure Viamed 1.0 table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:4.00pt "Arial", sans-serif; } .font1 { font:8.00pt "Arial", sans-serif; } .font2 { font:10.00pt "Arial", sans-serif; } .font3 { font:12.00pt "Arial", sans-serif; } .font4 { font:18.00pt "Arial", sans-serif; } .font5 { font:21.00pt "Arial", sans-serif; } .font6 { font:32.00pt "Times New Roman", serif; } 9to se*** BOPP & REUTHER ME55TECHNIK A new Vortex Gnration for liquids, gas and steam o CD Vortex Meter Series VTX 2 Designed for process measurement: 驕 extremely robust excellent metrological characteristics Օ outstanding compensation of vibrations insensitive against pulsations, pressure pushes and temperature shocks Օ with intelligent electronics simply operated transmitters with faster signal treatment and diagnosis statistics Օ 2-wire technique Measurinq Princi Due to the special design of the bluff body the frequency of the vortices is proportional to the flow velocity and independent from pressure, temperature, density and viscosity. The vortices, detachinq reciprocally from the bluff body, enqender local chanqes in velocity and pressure, which are detected by a sensor and converted to a sqnal (4-20mA or NAMUR pulses) by a transmitter, equipped with an auto-adaptive and microprocessor-driven siqnal processinq. When a fluid (liquid, qas or steam) meets an obstructive body with a certain minimum flow velocity the fluid can only follow the contour of this body up to a particular point, after which it curls up to form a vortex. This happens in turn on either side of the bluff body. The vortices (eddies) travel downstream, for-minq the KĢrmn Vortex Street". The Vortex meter series VTX is equipped with a trapezoidal bluff body which induces a precise detachment of the vortices with hiqh repeatability. Liquids, qases and steam can be measured equally well. Technical Data Accuracy Gas / steam : ± 0,9 % of measured value *) Liquids : ± 0,6 °% of measured value *) Repeatability ±0,15 °% of measured value Operating temperature. -40°Cto +270 °C standard -200 °C to +450 °C opecial deslqn Ambient temp.. -40°Cto +70 °C Process connection Sandwich: DN 15 to 300; PN 10 to 40; Class 150 and 300. Flanqe: DN 15 to 300; PN 40; Class 150 and 300. Models up to PN 100 on request Electrical connection Power supply 14 - 30 VDC 2 -wire - technoloqy, 4-20 mA, HART or pulses (without HART) and pulse output acc. NAMUR (scalable) cable fittinq 0120x1,5 Materials Bluff body: 1.4404 Housinq: 1.4404 Gaskets: Viton, Graphite Elootroulc housiou: oasted aluminium Safety class EEx ia IIC T6 acc. ATEX 100a (EEx d in preparation) Liquids [m3/h] Ranqes DN Gas / Steam [m3/h] mm lower upper lower upper value value value value 15 2 25 0,4 8 25 5 130 1,0 20 40 10 330 2,5 50 50 15 560 4 80 80 40 1600 6 180 100 60 2300 10 300 150 130 5300 20 600 200 250 9400 40 1200 250 400 16000 80 1800 300 500 20000 120 2500 Nominal size > DN 300 on request available EG-declaration acc. EMV-quideline 89/336/EWG of DIN EN 61000-6-2 / DIN EN 61000-6-3 confirmity and NAMUR NE 21 *) at reference conditions