FA 510/515 Dew point sensor for adsorption / desiccant dryers

In addition to the previously common 4…20 mA analogue output the new generation of dew point sensors have a digital RS 485 interface (Modbus-RTU). All values like e. g. dew point, temperature, absolute humidity … which are measured and calculated by the dew point sensor can be retrieved via the Modbus protocol.

Compared with the previous models the sensors and evaluation electronics have been improved once again, especially the integrated temperature compensation. This means: Increased accuracy at different ambient temperatures and an improved resolution of the sensor signal. Like the previous models the new dew point sensors have an excellent long-term stability and show reliable measured values. The sensor element is insensitive against condensation and due to the serial sintered cap made of stainless steel it is protected against direct contact with soiled particles.

• Ideal for all types of adsorption dryers with a measuring range of -80…+20°Ctd.
• Gas-independent measurement, also suitable for other, non-corrosive gases
• Compact design, ideal for dryer installations
• Robust design, protection class IP 66
• Condensation insensitive sensor element
• Long-term stability and drift-resistant, thus optimized calibration intervals
• Fast adaptation time, especially from dry to wet conditions
• BSP, NPT or UNF threads
• Analog output 4…20 mA (2- or 3-wire technology) and Modbus RTU (RS 485) interface
• Measured values available in different units, pressure dew point [°Ctd], temperature [°C], rel. humidity [%rh], abs. humidity [g/m³], degree of humidity [g/kg], humidity fraction 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

Special features of dew point sensor FA 510/515 for desiccant dryers:

• Measuring range -80…20°Ctd
• Analogue output 4…20 mA
• Precise, long-term stability
• Condensation insensitive
• Quick response time
• Measuring range -80…20°Ctd
• Pressure-tight up to 350 bar (special version
• NEW: Modbus-RTU interface
• NEW: Higher resolution of the sensor signal due to improved evaluation electronics
• Sensor diagnosis on site by means of hand-held instrument or CS Service Software