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FA 550

FA 550

Dew Point Meter with integrated IP67 aluminium die-cast housing

The FA 550 is ideally suited for outdoor dew point measurement and reliably determines dew points even under harsh industrial conditions.

Key Features

  • Robust, waterproof die-cast aluminum housing, IP 67
  • Alarm relay - limit value adjustable via buttons (max 60VDC, 0.5 A)
  • 4 ... 20 mA analog output
  • Optional: 2 pieces 4 ... 20 mA analog output e.g. for dew point and temperature
  • Extremely long-term stable
  • Fast adjustment time
  • Pressure resistant up to 500 bar (optional)
  • NEW: Modbus RTU interface
  • NEW: Ethernet interface (optional)
  • NEW: Higher resolution of the sensor signal due to improved evaluation electronics
  • NEW: Sensor diagnosis on-site with handheld device or CS Service Software
  • Readable via Modbus: pressure dew point [° Ctd.], temperature [° C], rel. humidity [% RH], abs. humidity [g / m3], degree of humidity [g/m3], moisture content V / V [ppmV / V], Partial vapor pressure [hPa], atmospheric dew point [° Ctd.atm]

Application

  • Dew point measurement in compressed air systems after adsorption dryers, membrane dryers or refrigeration dryer
  • Residual moisture measurement and dew point measurement in gases such as: oxygen, nitrogen, argon, hydrogen, natural gas, biogas...

Easy operation via keypad at display

Dew Point Display Values

Other Humidity Parameters

The integrated display shows the dew point in big figures as well as further humidity parameters on two more display pages. By means of the arrow key it can be browsed between the display pages.

Alarm Threshold Freely Setting

Selectable Measuring Units

The alarm threshold value for the integrated relay can be entered via the keys. Apart from the alarm threshold it is also possible to enter the hysteresis freely.

The alarm could be set to one of the values (units)

Technical Data

Measuring rangeDew Point -80...+20 / -60…+30 / -20...+50 °Ctd
Humidity 0...100 % RH
Temperature -20...70 °C
Accuracy± 1°C at +50...-20 °Ctd
± 2°C at -20…-50 °Ctd
± 3°C at -50…-80 °Ctd
Pressure range-1...50 bar, Optional: Special version up to 350 bar
Display2” TFT colour display (320 x 240)
Power supply24 VDC (10...30 VDC)
Protection classIP 67
EMVDIN EN 61326
Operating temperature-20...70 °C
Output signal1 x RS 485 (Modbus-RTU) and 1 x 4…20 mA
Alarm relayNC, max. 60 VDC, 0.5A (relays is closed in case of alarm and power failure)
Burden for analogue output < 500 Ω
Sensor protectionSinter filter 50 μm stainless steel
Housing materialAluminium die-cast
Screw-in threadG 1/2“, Optional: UNF 5/8”, NPT ½”
DimensionsØ 76.5 x 85 x 75 mm (W x H x D)

Dimension