Data sheet - VA 520
4Pages

Flow VA 520 - Inline flow meter NEW: Modbus-RTU output 4...20 mA output for present flow Display head rotatable by 180 ° e.g. in case of reverse flow direction Pulse output for total flow (counter reading), galvanically isolated or M-Bus (optionally) Display shows 2 values at the same time: • Present flow in m³/h, l/min,... • Total consumption (counter reading) in m³, l • Temperature measurement Readout values in the display can be rotated by 180°, e.g. for overhead installation Measuring unit can be unscrewed: Removal of the entire measuring section not necessary, no by-pass necessary With a key stroke: • Reset counter reading • Select units • Zero-point adjustment, leak flow volume suppression Easy installation into the existing pipeline due to integrated measuring section and weld neck flange (according to EN 1092-1 PN 40) Option: The sensor can be removed and cleaned High measuring accuracy due to defined measuring section (inlet and outlet section) Bi-directional measurement. Blue or green arrows in the display indicate the direction of flow. A meter reading is available for each flow direction. Application-technological features of the flow meters VA 520: • Digital interfaces such as Modbus-RTU, Ethernet (PoE) and M-Bus enable connection to higher-level systems such as energy management systems, building management systems, PLC,... • Easy and affordable installation • Units freely selectable via keys on the display m³/h, m³/min, l/min, l/s, kg/h, kg/min, kg/s, cfm • Compressed air counter up to 1,999,999,999 m³ can be reset to “zero” via keypad • Analog output 4...20 mA, pulse output (electrically isolated) • High measuring accuracy even in the lower measuring range (ideal for leakage measurement) • Negligibly small loss of pressure • Calorimetric measuring principle, no additional pressure and temperature measurement necessary, no mechanically moved parts • Comprehensive diagnostic functions can be read out on the display or remote access via Modbus-RTU such as exceeding max./ min values °C, calibration cycle, error codes, serial number. All parameters can be read out and changed

Flow measuring ranges VA 520 (Max version 185 m/s) for compressed air (ISO 1217: 1000 mbar, 20°C) Measuring ranges for other types of gas see pages 110 to 113 Measuring section Inner pipe Measuring range full scales m³/h (cfm) *Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site. TECHNICAL DATA VA 520 Parameters: m³/h, l/min (1000 mbar, 20 °C) in case of compressed air or Nm³/h, Nl/min (1013 mbar, 0 °C) in case of gases Units adjustable via keys at display: m³/h, m³/min, l/min, l/s, ft/ min, cfm, m/s, kg/h, kg/min,...

Flow VA 520 - Inline flow meter NEW: Modbus-RTU output Display head rotatable by 180 ° e.g. in case of reverse flow direction Display shows 2 values at the same time: • Present flow in m³/h, l/min,... 4...20 mA output for present flow • Total consumption (counter reading) in m³, l Pulse output for total flow (counter reading), galvanically isolated or M-Bus (optionally) • Temperature measurement Readout values in the display can be rotated by 180°, e.g. for overhead installation Measuring unit can be unscrewed: Removal of the entire measuring section not necessary, no by-pass necessary With...

Flow Flow measuring ranges VA 520 (max version 185 m/s) for compressed air (ISO 1217: 1000 mbar, 20 °C) Measuring range for other gases see pages 110 to 113 Connection thread Measuring range full scales m³/h cfm *Attention: Shortened inlet section. Please observe the recommended minimum inlet section (length = 15 x inner diameter) on site! ORDER NO. ORDER NO. Stainless steel Stainless steel VA 520 flow meter with 1/4" measuring section VA 520 flow meter with 3/8” measuring section VA 520 flow meter with 1/2" measuring section VA 520 flow meter with 3/4" measuring section VA 520 flow meter...