We’ve used ADT across a few different projects. What keeps us going back is they actually know how our sites work, and work with us to find the best solutions.
AIR Measurement technology
VA 550 – Flow meter for heavy duty industrial applications
Our extra robust flow meter is available as ATEX-version for application in explosive areas
- 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
Product detail
Everything you need to specify
The immersion flow meter VA 550 is the ideal flow sensor for installation into existing compressed air resp. gas lines from 3/4“ up to DN 500.
Special measurement technology features:
- 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
Special mechanical features:
- 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
- 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
THE FINER DETAILS
Technical Specifications
Division
Air Measurement
Brand
CS Instruments
Technology
Differential Pressure
Measuring Principle
Thermal mass fl ow sensor
Response Time
t 90 < 3 s
Operating temperature range sensor tube/display unit:
-40…180 °C standard version, sensor tube
-20…70 °C display unit
-20…120 °C for ATEX version
Burden
< 500 ohm
Additional average value
calculation:
for all parameters freely adjustable from 1 minute up to 1 day
Protection Class
IP 67
Material
Die-cast aluminum housing, sensor tube stainless steel 1.4571
Screw-in thread:
G 1/2″ ISO 228, NPT 1/2″, R 1/2″, PT 1/2
Operating pressure VA 550:
50 bar, in special version 100 bar (with DVGW approval max. 16 bar)
Power supply:
18…36 VDC, 5 W
Why it matters
Clean, dry air pays back
The right filtration and drying shows measurable returns across the whole facility.
– Air loss
20-30%
Reduction in total air loss when leaks are properly sealed and repaired.
British Compressed Air Society
– ENERGY SAVINGS
~7%
Energy savings per bar of pressure drop recovered when filters are clean & dryers cleared
Hayley Dexis
– ELECTRICITY REDUCTION
10-15%
Electricity reduction as compressed air accounts for up to 30% of a facility’s total electricity bill
British Compressed Air Society
– INCREASED LIFESPAN
20-30%
Increase in the lifespan of pneumatic tools. Clean, dry air prevents this internal wear and tear.
Alup Kompressoren
All statistics have been researched and reported within reputable industry reports.
OUR Accreditations
WHAT WE DO
Find us by service or sector
Total care
More than a supplier – we’re a service partner
We provide complete sales and service support on all types of compressed air and gas treatment equipment. Our primary function is on‑site servicing of desiccant and refrigerant dryers, filtration and condensate management.
This includes
- Total Care Contracts
- Maintenance Contracts
- Call‑out servicing
- Trouble‑shooting service
- Operational advisory service
- Air Quality Testing
We also provide rental equipment
Whether you’re managing planned system maintenance, expanding temporary capacity, or facing an emergency breakdown, ADT provides short- and long-term rental units designed for immediate deployment.
Learn more about our financing options
ADT provide attractive finance deals to give you different options to pay for your equipment, including hire purchase and fixed-term rental options.
In our clients’ words
Trusted on the plant floor for a decade
Project Engineer, Waste Management
Didn’t realise how much our old system was costing us until ADT came in and did an assessment. The retrofit paid for itself faster than we expected.
Engineering Technician, Pharmaceutical Manufacturing
ADT continues to be a trusted partner of ours, consistently delivering reliable service and exceptional support whenever we need it.
Mechanical Planner, Cement Works & Quarry
We have worked with ADT for over 10 years and deeply appreciate their unparalleled understanding and industry expertise.
Technical Engineer, Nuclear Power Station
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