Relative humidity and the temperature are measured via two sensor elements and the dew point is calculated. From this measurement, further units can be calculated and also output.

The dew point measurement is independent of the medium and can be carried out in various non-corrosive gases.

The sensor element is insensitive to dew and can even be cleaned by the user himself, with deionized water or a cleaning alcohol.

The sensor can be easily installed and uninstalled via a quick coupling and a suitable measuring chamber. This is particularly useful when the compressed air supply cannot be shut off or when the gauge needs to be recalibrated or cleaned.

The measuring chamber also protects the sensor from contamination from the main flow. A partial flow is diverted through the measuring chamber into the environment, ensuring that fresh process air is always flowing around the sensor element, resulting in a faster response time to humidity changes in the system.

Use the on-screen buttons to scroll through the various display pages.

Settings can be made or changed.

The analog output can be scaled or assigned to another unit.

The alarm relay can be programmed with limit values.

FA 500 - Dew point sensor with integrated display and alarm relay

Name: FA 500 - Dew point sensor with integrated display and alarm relay
Rating: 4.6 (41 reviews)

With the FA 500 you make the right choice for highest precision in dew point measurements. Our sensor offers a wide span of measuring ranges perfectly matched to the needs of different compressed air dryers. Rely on us for accurate results in any situation.

Monitoring a compressed air dryer is critical to increase energy efficiency, ensure product quality, prevent machine damage, identify maintenance needs and achieve cost savings. This contributes to the smooth operation of compressed air systems in various industrial applications.

Multiple display pages to show dew point and other measured values such as relative humidity and temperature
Definition of threshold values for the alarm relay, definition of hysteresis
Scaling of the analog output 04...20 mA and switching to other measured variables
Input of system pressure as well as reference pressure for calculation of reference dew points, e.g., atmospheric dew point

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Details

Ideal for all types of compressed air dryers with different measuring ranges such as -80...+20°Ctd; -60...+30°Ctd; -20...+50°Ctd
Sensor element insensitive against condensation and water
Maximum pressure 500 bar (special version)
Long-term stable and drift-proof, thus optimized calibration intervals
Gas-independent measurement, also suitable for other non-corrosive gases
Fast response time, especially in case of moisture ingress
BSP- or NPT-Threads
Protection class IP 65
Analog output 4...20 mA and Modbus RTU (RS 485) interface, contact relay with limit value adjustable via keys (max. 60 VDC, 0.5A)
Optional: Modbus TCP (Ethernet), Modbus TCP PoE (Ethernet) or M-Bus interface
Measured values available in different units, pressure dew point [°Ctd], temperature [°C], rel. humidity [%rh], abs. humidity [g/m³], moisture content [g/kg], moisture content V/V [ppmV/V], water vapor partial pressure [hPa], atmospheric dew point [°Ctd.atm]
On-site sensor diagnostics with handheld device or CS Service Software