Field Instruments

Product Overview

The CS Instruments VA 525 is a compact, inline thermal mass flow meter designed for precise measurement of compressed air and nitrogen consumption directly in the pipeline. Engineered for reliability and accuracy, it provides real-time flow, consumption, and temperature data — making it ideal for monitoring air usage, detecting leaks, and optimising energy efficiency in industrial compressed-air systems.

With its thermal mass flow technology, the VA 525 delivers temperature- and pressure-independent readings without additional sensors. Its integrated display, robust design, and versatile output options make it a cost-effective, maintenance-free solution for OEMs and plant operators seeking long-term performance and sustainability.

Key Features

• Direct Inline Measurement: Compact inline design with minimal pressure loss for accurate flow detection.
• Wide Measuring Range: Suitable for flows from 0.2 Nm³/h up to 200 Nm³/h (depending on pipe size).
• Thermal Mass Flow Principle: Measures standardised mass flow — independent of temperature and pressure variations.
• Display with Totaliser: Integrated LED or LCD display shows instantaneous flow, total consumption, and temperature.
• Versatile Outputs:
  • 1 × 4–20 mA analogue output (flow or consumption)
  • 1 × Pulse output (total consumption)
  • Optional Modbus RTU or IO-Link® interface for digital communication
• Temperature Compensation: Ensures precise readings even with varying ambient or media conditions.
• Compact and Rugged: Inline aluminium or stainless-steel body with protection class IP65.
• Fast Response Time: Ideal for dynamic systems or leak monitoring applications.
• Simple Installation: Available with standard G or NPT female threads — no straight inlet sections required.
• Maintenance-Free Operation: No moving parts; suitable for continuous monitoring in industrial environments.

Technical Specifications

• Manufacturer: CS Instruments GmbH & Co. KG
• Model: VA 525
• Type: Inline Thermal Mass Flow Meter
• Medium: Compressed Air, Nitrogen, Inert Gases
• Measuring Principle: Thermal Mass Flow
• Measuring Range: Typically 0.2 Nm³/h to 200 Nm³/h (depending on model and pipe size)
• Pipe Sizes Available: DN 15 – DN 50 (½″ to 2″ BSP/NPT threads)
• Accuracy: ± 1.5 % of reading ± 0.3 % of full scale
• Repeatability: ± 0.5 % of reading
• Pressure Range: Up to 16 bar (standard); optional 40 bar version
• Media Temperature: –20 °C to +60 °C (standard range)
• Ambient Temperature: 0 °C to +50 °C
• Output Signals:
  • Analogue 4–20 mA (flow or consumption)
  • Pulse output (totaliser)
  • Optional Modbus RTU or IO-Link® digital interface
• Power Supply: 18 – 30 V DC, < 100 mA consumption
• Display: Integrated LCD or LED with flow and total values
• Response Time: ≤ 1 s
• Connection: G ¼″ to G 2″ female threads (NPT optional)
• Protection Class: IP65 (IEC 60529)
• Housing Material: Anodised Aluminium or Stainless Steel 1.4301 (304)
• Sealing Material: FKM (Viton)
• Weight: Approx. 0.6 – 1.8 kg (depending on version)
• Compliance: CE, RoHS

Applications

• Compressed Air Monitoring: Measure air consumption per line, machine, or process zone.
• Nitrogen Flow Control: Track and manage nitrogen usage for cost and efficiency optimisation.
• Energy Management Systems: Integrate into ISO 50001 energy monitoring programmes.
• Leak Detection & Prevention: Identify flow anomalies and air losses in real time.
• OEM Equipment: Suitable for integration into dryers, compressors, and air systems.
• Industrial Process Control: Monitor and regulate air delivery in production and automation equipment.

Why Buy from FieldInstruments.lk?

At FieldInstruments.lk, Sri Lanka’s trusted distributor of CS Instruments and industrial automation solutions, we deliver only genuine, factory-calibrated flow meters with reliable support and technical expertise.

Our Advantages:

• Genuine CS Instruments products with calibration certificate
• Competitive pricing and fast island-wide delivery
• Local engineering and installation support
• After-sales service, calibration, and application assistance

The CS Instruments VA 525 combines compact design, thermal-mass precision, and industrial connectivity — the perfect choice for accurate and maintenance-free flow monitoring in compressed-air and nitrogen networks.

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Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk