Flow VA 550 - Flow meter insertion type Flow sensor for installation in existing compressed air or gas line of 3/4" to DN 1000 Outputs: 4…20 mA, pulse, Modbus, M-Bus, Profi Bus, Ethernet, HART Housing rotatable, display 180° rotatable (on the head). Settings can be modified via display, flow meter can be reset Advantages of optical keys: The sensor can also be configured in the ATEX area, without the housing needing to be opened. All wetted parts made from stainless steel 1.4571 The sensor can be removed and cleaned Special measurement technology features: Special mechanical features: • 4 values on the display: Flow, total consumption, velocity, temperature. Units freely adjustable • Robust impact-proof aluminium die cast housing for the outdoor area IP 67 • All measured values, settings such as gas type, inner diameter, serial number and so on can be accessed via Modbus-RTU • All wetted parts made from stainless steel 1.4571 • Comprehensive diagnostic functions readable on the display or remote access via Modbus such as calibration cycle, error codes, serial number • On request with DVGW approval for natural gas (up to 16 bar) • Notification in case of exceeding the calibration cycle • Standard version accuracy 1.5% of m.v. ± 0.3% of f.s. • Precision version accuracy 1.0% of m.v. ± 0.3% of f.s • Suitable as an insertion version for 3/4" to DN 1000 • Pressure range up to 50 bar, special version up to 100 bar • Temperature range up to 180 °C • No moveable parts, no wear • Sensor tip very robust, easy to clean • Measuring span of 1 : 1000 (0.1 up to 224 m/s) • Configuration and diagnosis via display, hand-held device PI 500, PC service software on-site • Gas type (air, nitrogen, oxygen, argon and so on) freely adjustable via PC service software or external device DS 400, DS 500, PI 500 • Reference conditions °C and mbar/hPa freely adjustable • Easy installation and removal under pressure via 1/2" ball valve • Housing rotatable, display rotatable by 180° • Safety ring for installation and removal under pressure • Depth scale for precise installation • Zero-point adjustment, leak flow volume suppression

Easy mounting/dismounting of VA 550 under pressure - without disconnection of the line without emptying the line If there is no suitable measuring site with 1/2" ball valve, there are two simple possibilities to set up a measuring site: Engraved depth scale for precise installation 180 Installation depth = x + y dA = outer diameter x = dA 2 B Mount spot drilling collar including ball valve By means of the drilling jig, it is possible to drill under pressure through the 1/2" ball valve into the existing pipe. The drilling chips are collected in a filter. Then the probe can be mounted. A Weld on...

Flow VA 550 - Flow meter insertion meter Example order code VA 550: 0695 0550_A1_B1_C1_D1_E1_F1_G1_H1_I1_J1_K1_L1_M1_R1 Measuring range (see table page 110 to 113) Nitrogen (N2) Argon (Ar) Carbon dioxide (CO2) Oxygen (O2) Screw-in thread Natural gas (NG) Helium (He) (real gas adjustment F2 required) Propane (C3H8) (real gas adjustment F2 required) Installation length / shaft length Methane (CH4) Biogas (methane 50% : CO2 50%) Hydrogen (H2) (real gas adjustment F2 required) Further gas / please indicate gas type (on request) Gas mixture / please indicate mixture ratio (on request) Standard version...

VA 550 Flow meter, measuring head in robust aluminium die casting housing TECHNICAL DATA VA 550 Measuring range VA 550: up to 50 Nm/s, low-speed version* up to 92.7 Nm/s, standard version* up to 185 Nm/s, max. version* up to 224 Nm/s, high-speed version* * Measuring range Nm³/h for different pipe diameters and gases, see table measuring ranges flow * All measured values related to DIN 1343 standard conditions 0° and 1013 mbar ex works Accuracy: Accuracy class (o. M. V. = of measured value) (o. F. S. = of full scale) Connection cable for probes 10 m with open ends Ethernet connection cable length...