Long-Term Stability and Reliability
The highly stable dew point sensor ensures reliable long-term measurements without frequent recalibration, even in demanding industrial environments.
CS Instruments − FA 510 / FA 515
Industrial dew point sensor for accurate measurement of residual moisture in compressed air and technical gases.
| Measuring Range: Up to −80 … +50 °Ctd (depending on version) |
| Accuracy: Up to ±1 °Ctd |
| Pressure Range: −1 … 50 bar (optional up to 500 bar) |
| Outputs / Communication: 4–20 mA, 2–10 V, Modbus RTU, IO-Link |
| Protection Class: IP66 |
| Measuring Range: Up to −80 … +50 °Ctd (depending on version) |
| Accuracy: Up to ±1 °Ctd |
| Pressure Range: −1 … 50 bar (optional up to 500 bar) |
| Outputs / Communication: 4–20 mA, 2–10 V, Modbus RTU, IO-Link |
| Protection Class: IP66 |
- FA 510 – 3-Wire OutputDew point sensor with RS-485 (Modbus RTU) and 4–20 mA output (3-wire connection), suitable for advanced monitoring and SCADA systems.
- FA 515 – 2-Wire OutputDew point sensor with 4–20 mA output (2-wire connection), suitable for simple integration into existing industrial systems.
- Version for Adsorption DryersMeasuring range of −80 … +20 °Ctd for very dry applications and adsorption dryer monitoring.
- Version for Refrigeration DryersMeasuring range of −20 … +50 °Ctd for refrigeration dryer monitoring and general compressed air applications.
| Parameter | FA 510 / FA 515 |
|---|---|
| Measuring Range | See ordering code |
| Accuracy (50 … −20 °Ctd) [°Ctd] | ± 1 |
| Accuracy (−20 … −50 °Ctd) [°Ctd] | ± 2 |
| Accuracy (−50 … −80 °Ctd) [°Ctd] | ± 3 |
| Pressure Range [bar] | −1 … 50 |
| Pressure Range (Special Version) [bar] | up to 500 |
| Power Supply [VDC] | 24 (10 … 36) |
| Protection Class | IP66 |
| EMC | According to DIN EN 61326-1 |
| Operating Temperature [°C] | −20 … +70 |
| Connection | M12, 5-pin |
| Outputs / Communication | Modbus RTU (RS-485), 4–20 mA, 2–10 V, IO-Link |
| Measured / Calculated Values (via Interface) | Pressure dew point (°Ctd), temperature (°C), relative humidity (%RH), absolute humidity (g/m³), moisture content (g/kg), moisture content (ppmV/V), water vapor partial pressure (hPa), atmospheric dew point (°Ctd.atm) |
| Optional: System Pressure [bar(g)] | Available (optional) |
| Analog Output Load [Ω] | < 500 |
| Process Thread | G 1/2" (stainless steel); optional UNF 5/8", NPT 1/2", NPT 3/8" |
| Dimensions | Ø 30 mm, length approximately 130 mm |
Why Choose the FA 510 / FA 515?
Condensation Resistant
The sensor design is resistant to condensation, enabling safe and accurate dew point measurement even under large humidity fluctuations.
Fast Response Time
A very short response time enables rapid detection of moisture changes and immediate system response.
Wide Range of Measurement Values
In addition to pressure dew point, the sensor can calculate temperature, relative and absolute humidity, moisture content (ppm), water vapor partial pressure, and atmospheric dew point.
Industrial Communication and IO-Link
Support for Modbus RTU, 4–20 mA, 2–10 V, and IO-Link allows seamless integration into existing monitoring and automation systems.
Optional Pressure Measurement
A version with an integrated pressure sensor is available, enabling simultaneous monitoring of dew point and system pressure via digital interfaces.
Versatile Industrial Applications
Suitable for dew point measurement downstream of adsorption, membrane, and refrigeration dryers, as well as for residual moisture measurement in gases such as nitrogen, oxygen, and argon.
Easy Installation and Longer Service Life
The recommended measuring chamber with quick-connect fitting enables fast installation, longer sensor life, and faster measurement response.
General Industry
Compressed AirContinuous dew point monitoring for stable dryer performance and prevention of condensation within the compressed air network.
Plastics / PET
Air QualityMonitoring compressed air dryness for reliable pneumatic operation and stable processes in plastics and PET production.
Food Industry
Process SafetyDew point monitoring to reduce moisture-related risks and support quality requirements in food production.
Pharmaceutical Industry
Validation / MonitoringAccurate dew point monitoring for dry, repeatable conditions and improved traceability in critical production environments.
Medical Industry
System ReliabilityMonitoring compressed air dryness to ensure stable operation of systems where air quality is of critical importance.
Energy Industry
Operational ReliabilityDew point monitoring to prevent moisture in instrument air systems and improve operational reliability.
Measuring devices
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Measurement reports, trends, and interpretation of results
Supply, installation, calibration, and service
Where to find us
DirectionsPod lipami 4 · 1370 Logatec, Slovenija
Dew Point Meters
Choose the right dew point sensor or meter for monitoring residual moisture in compressed air and technical gases. The portfolio includes fixed-installation probes, ATEX versions, and portable service instruments.
FA 510 / FA 515
Dew Point SensorCompact dew point probe for compressed air and gases, suitable for permanent installation in refrigerated and desiccant dryers.
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FA 500
Display / Alarm RelayHigh-precision dew point probe with an extended measuring range for reliable monitoring of compressed air dryers, improved energy efficiency, and safe system operation.
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FA 550
Robust HousingRobust probe for reliable measurement of dew point and residual moisture in compressed air and industrial gases, even in the most demanding environments.
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FA 515 Ex
ATEX VersionDew point probe for hazardous (ATEX) environments, suitable for industrial and process applications.
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FA 505
OEMNew-generation dew point sensor for measuring residual moisture in compressed air and gases.
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DP 500
Portable MeterPortable dew point meter with integrated data logger for precise service measurements of dryers down to −80 °Ctd.
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DP 510
Additional InputAll DP 500 functions with an additional free sensor input.
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DP 400 mobile
Portable Case VersionPortable dew point meter with integrated rechargeable battery, high-precision dew point sensor, and pressure sensor up to 16 bar for comprehensive monitoring of moisture and pressure in compressed air systems.
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