Threaded dew-point transmitter FA 515

G 1/2NPT 1/2RS-485

Product overview
FA 515 - Dew point sensor for adsorption dryers. Monitoring adsorption dryers increases energy efficiency, ensures product quality, prevents equipment damage and identifies maintenance needs in compressed air and technical gas systems. The sensor element is condensation-resistant and protected by a stainless-steel sintered cap. Evaluation electronics and sensor technology have been improved to provide higher precision across varying ambient temperatures and increased signal resolution.

Key features

• Long-term stable measurement results
• Analog output 4…20 mA (2-wire)
• Condensation-resistant sensor element
• Fast response time
• Pressure-tight up to 350 bar (special version up to 500 bar)
• Modbus-RTU interface (RS-485)
• Improved signal resolution due to upgraded electronics
• On-site sensor diagnostics with portable device or CS Service Software

Applications and benefits

• Monitoring and control of adsorption dryers
• Residual moisture measurement in compressed air and technical gases (e.g., N2, O2)
• Prevention of condensation and corrosion in installations
• Improved energy efficiency and reduced maintenance costs
• Reliable measurements in variable ambient conditions

Technical specifications

• Model: FA 515
• Brand: CS-Instruments
• Measuring ranges: -80…20 °Ctd and -20…50 °Ctd
• Accuracy: ±1 °C (50…-20 °Ctd); ±2 °C (-20…-50 °Ctd); ±3 °C (-50…-80 °Ctd)
• Pressure range: -1…50 bar (special versions up to 500 bar)
• Power supply: 24 VDC (10…36 VDC)
• Analogue output: 4…20 mA (2-wire)
• Interface: Modbus-RTU (RS-485)
• Protection class: IP66
• EMC: In accordance with DIN EN 61326-1
• Operating temperature: -20…70 °C
• Connection: M12, 5-pin
• Screw-in thread: G 1/2\" stainless steel; optional: UNF 5/8\", NPT 1/2\"
• Burden for analogue output: < 500 Ω
• Dimensions: Ø 30 mm, length approx. 130 mm