Flow sensor for heavy duty industrial applications

The immersion sensor VA 550 is the ideal flow sensor for installation into existing compressed air resp. gas lines from 3/4“ up to DN 500.

• Robust impact-proof aluminum die cast housing for the outdoor area IP 67
• All medium-touching parts made from stainless steel 1,4571
• As immersion sensor suitable for 3/4“ up to DN 500
• On request with ATEX approval ATEX II 2G Ex d IIC T4
• On request with DVGW approval for natural gas (up to 16 bar)
• Pressure range up to 50 bar, special version up to 100 bar
• Temperature range up to 180 °C, optionally up to 350°C
• No moving parts, no wearout
• Sensor tip very robust, easy to clean
• Easy mounting and dismounting under pressure via 1/2“ ball valve
• Housing twistable, display twistable by 180°
• Safety ring for mounting and dismounting under pressure
• Depth scale for precise installation

• 4 values in the display: Nm³/h, Nm³, Nm/s, °C units freely adjustable
• Min/max values and daily/hours/minutes average values freely adjustable
• All measured values, settings like gas type, inner diameter, serial number and so on retrievable via Modbus RTU
• Comprehensive diagnosis functions readable at the display or remote access via Modbus like e. g. exceeding of max/min values °C, calibration cycle, error codes, serial number, all parameters readable and adjustable
• Notification in case of exceeding of 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. up to
• 40 calibration points with certificate
• Measuring span of 1 : 1000 (0.1 up to 224 m/s)
• Configuration and diagnosis via display, hand-held instrument
• PI 500, PC service software on-site
• Gas type (air, nitrogen, oxygen, argon and so on) freely adjustable
• Reference conditions °C and mbar/hPa freely adjustable
• Zero-point adjustment, leak flow volume suppression
• Pressure loss negligible
• Flow measurement in both directions via flow direction switch