Techmark Engineers & Consultants

Thermal Mass flow sensor for flow measurement
Record & reduce your energy costs and increase your sustainability with the VA 550. Monitor your consumption & analyse your leakage flows with asingle measuring device. Its design also makes it ideal for mobile measurements.

Insertion type sensor for demanding industrial applications, with ATEX approval for EX zones or DVGW approval for use in natural gas.

• All wetted parts are made of stainless steel, especially for applications with high demands on cleanliness and surface quality
• Robust aluminium housing enables use in harsh industrial environments
• Recommended for flammable gases such as Natural gas, hydrogen, Biogas, etc. due to ATEX or DVGW approval
• Measuring the mass flow, direct output of the Standarized volume flow
• Highly accurate for both small and large flows
• Pressure and temperature-compensated thanks to the thermal mass flow principle
• Quick and easy installation via a standard ½' Ball valve
• No moving parts, therefore Low maintenance
• Disappearingly low pressure loss, as the blockage of the diameter is negligible
• 04...20 mA, pulse and a Modbus RTU (RS 485) interface as standard, optional interfaces such as Modbus TCP (Ethernet), PoE, M-Bus
• Pressure range up to 50 bar, special version up to 100 bar
• Media temperature range up to 180 °C (ATEX version up to 120 °C)
• Protection class IP 67 (IP 64 for ATEX II 2D Ex tb IIIC T90°C Db)
• Integrated display for showing the Measured values
• Suitable as insertion version for 3/4" to DN 1000
• Simple installation under pressure
• Settings can be adjusted using the buttons on the display
• Main counter reading can be reset via the Display
• For Velocities up to 224 Nm/s
• Highly accurate with an Accuracy of ± 1.5% or ± 1% of the Measured value - As well as ± 0.3 % of the final value

Special measurement technology features:

 

• 4 values on the display: Flow, total consumption, velocity, temperature. Units freely adjustable
• All measured values, settings such as gas type, inner diameter, serial number and so on can be accessed via Modbus-RTU
• Comprehensive diagnostic functions readable on the display or remote access via Modbus such as calibration cycle, error codes, serial number
• 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
• 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