VA 525 - Compact in-line flow sensor

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VA 525 - Compact in-line flow sensor Specification

Mounting Type
Inline, directly into pipe system

Features
Bidirectional measurement, compact design, easy installation, maintenance-free

Equipment Type
Compact in-line flow sensor

Humidity
Max. 90% RH (non-condensing)

Automation Grade
Automatic

Display Type
LCD digital display

Operating Voltage
24 V DC

Application
For compressed air and non-corrosive gases

Interface Type
Analog output (420 mA), Pulse, Modbus RTU/RS485 (optional)

Measuring Range
20 to 5,000 l/min (depending on port size)

Port Size
G 1/2, 1/4, 3/8 (varies by model)

Response Time
50 ms

Temperature
-20C to +70C (ambient)

Power Supply
24 V DC 10%

Accuracy
1.5% of measured value 0.3% F.S.

Gas Pressure
Max. 16 bar (232 psi)

Resolution
0.1 l/min

Usage
Flow measurement in compressed air systems

Machine Weight
Approx. 200 g (varies with port size)

Control Mode
Digital, Automatic

Protection Class
IP65 (dust and water jet protected)

Straight Pipe Requirement
Minimal or none required due to sensor design

Data Logging
Integrated totalizer function (resettable/non-resettable)

Electrical Connection
M12 (4-pin) connection

Media Compatibility
Dry, clean, non-corrosive gases

Body Material
Anodized aluminum (sensor body); Stainless steel available on request

Optional Accessories
Panel mounting kit, remote display, power adapter

Pressure Loss
< 0.1 bar at max. flow

Display Units
Selectable: l/min, m³/h, cfm

About VA 525 - Compact in-line flow sensor

Current consumption in m³/h, l / min, ...
Total consumption (meter reading) in m³, l, kg
Temperature measurement
Optional: Pressure measurement

Special advantages of the flow sensor VA 525

Compact, small design - for use in machines, behind maintenance unit at the end user
Optionally with classic analogue signals (4...20 mA and pulse) or digital interfaces such as Modbus RTU, Ethernet (also PoE), M-Bus
All interfaces are programmable via the display

Advanced Measurement for Automation

The VA 525 delivers precise digital flow monitoring for compressed air and other non-corrosive gases. Its high accuracy (1.5% of measured value 0.3% F.S.) and minimal straight pipe requirement simplify installation in various layouts. With fast response times and selectable display units, this sensor integrates seamlessly into automation systems, supporting enhanced process control and energy management.

User-Friendly and Versatile Design

Engineered with a compact, maintenance-free design, the VA 525 can be mounted directly in-line without the need for lengthy straight pipe sections. Its IP65-rated housing protects against dust and water jets, making it suitable for demanding environments. The sensor is compatible with different port sizes and features optional accessories such as remote displays and panel mounting kits for flexible deployment.

Reliable Data and Connectivity Options

Equipped with an M12 (4-pin) connector and supporting analog output (420 mA), pulse, and Modbus RTU/RS485 (optional), the VA 525 facilitates easy integration with existing control systems. The integrated totalizer enables detailed consumption logging, while the LCD display presents real-time flow information in user-selectable units.

FAQs of VA 525 - Compact in-line flow sensor:

Q: How does the VA 525 flow sensor operate and what media is it suitable for?

A: The VA 525 uses a compact, inline design to measure the flow of dry, clean, non-corrosive gases, including compressed air. It is not appropriate for liquids or corrosive gases.

Q: What are the installation requirements and where can the VA 525 be mounted?

A: Thanks to its innovative design, the VA 525 needs minimal or no straight pipe lengths, enabling direct in-line installation within your pipeline system. It is suitable for new and retrofit setups in various industrial settings.

Q: When should I use the VA 525s resettable and non-resettable totalizer functions?

A: The resettable totalizer is ideal for measuring gas flow within a specific period or batch, while the non-resettable totalizer provides cumulative consumption data over the instruments lifetime, assisting with long-term monitoring or auditing.

Q: What are the main benefits of using the VA 525 for compressed air applications?

A: Key advantages include high accuracy, a fast digital response ( 50 ms), maintenance-free operation, and robust IP65 protection. Its versatile output options and real-time LCD display improve energy efficiency and process control in automation environments.

Q: How does the sensor interface with control systems and what data can be accessed?

A: Connection is via an M12 (4-pin) plug, supporting analog (420 mA), pulse, and optional Modbus RTU/RS485 outputs. Users can monitor instantaneous flow rates, totalized flow, and choose from units like l/min, m/h, or cfm directly on the LCD.

Q: What port sizes and operating conditions are supported by the VA 525?

A: The sensor supports G 1/2, 1/4, and 3/8 port sizes (varies by model), functions under pressures up to 16 bar, and sustains operation in ambient temperatures from -20C to +70C and humidity up to 90% RH (non-condensing).

Q: Where can the VA 525 be sourced in India, and who typically uses this equipment?

A: The VA 525 is available in India through dealers, distributors, exporters, manufacturers, and retailers. It serves industries requiring precise flow measurement, including factories, energy managers, process engineers, and automation professionals.

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