Dew point
FA 500 - Dew point sensor from -80 to 20 °Ctd

FA 500 is the ideal dew point measuring instrument with integrated display and alarm relay for refrigeration, membrane and adsorption dryers.
Special features:• Integrated display• Threshold value adjustable via keypad, alarm relay (max. 60 VDC, 0.5 A)• Pressure-tight up to 500 bar (special version)• Extremely stable in the long term
• Quick adaption time
• 4...20 mA analogue output for dew point• Different refrigeration and adsorption dryer versions• NEW: Modbus-RTU interface• NEW: Higher resolution of sensor signal due to the improved evaluation electronics• NEW: Sensor diagnosis on site with a portable 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]- Water vapour particle pressure [hPa]- Atmospheric dew point [°Ctd.atm]

The integrated keys enable simple, menu-controlled operation

Upper connection:
Power supply, 4…20 mA output, Modbus-RTU outputLower connection:Alarm relay

Option: Ethernet interface (PoE)56

www.cs-instruments.com

Dew point
Easy operation via the keys on the display
The integrated display shows the dew point in big figures
as well as further humidity parameters on two more display
pages. The arrow key can be used to scroll between thedisplay pages.

The alarm threshold value for the integrated relay can be
freely entered via the keys. In addition to the alarm threshold,the hysteresis can also be freely entered.

The 4…20 mA analogue output can be scaled freely or alsoallocated to one further parameter, e. g. g/m³.

After entering the system pressure of the compressed airsystem and the reference pressure (atmospheric pressure),
the sensor can also calculate back to the atmospheric dew
point from the measured pressure dew point if desired.

DESCRIPTIONORDER NO.

FA 500 dew point sensor for refrigeration dryers, -20...50 °Ctd

0699 0501

FA 500 dew point sensor for adsorption dryers, -80…20 °Ctd

0699 0502

FA 500 dew point sensor for adsorption dryers, -60...30 °Ctd

0699 0503

Connection cables:
Connection cable for VA/FA series, 5 m

0553 0104

Connection cable for VA/FA sensors, 10 m

0553 0105

Cable for alarm/pulse output, with M12 plug, length 5 m

0553 0106

Cable for alarm/pulse output, with M12 plug, length 10 m0553 0107

Ethernet connection cable length 5 m, M12 plug x-coded (8 pin) to RJ
45 plug

0553 2503

Ethernet connection cable length 10 m, M12 plug x-coded (8 pin) toRJ 45 plug

0553 2504

Options for FA 500:TECHNICAL DATA FA 500
Measuring range:-80…20 °Ctd, -60…
30 °Ctd,-20…50 °Ctd, or0…100% RH

Accuracy:± 1 °C at +50…-20 °Ctd
± 2 °C at -20…-50 °Ctd
± 3 °C at -50…-80 °Ctd

Pressure range:-1…50 barSpecial version up to500 bar

Power supply:

24 VDC (10…36 VDC)

Option: Max. pressure FA5xx 350 bar

Z699 0515

Protection class:

IP 65

Option: Max. pressure FA5xx 500 bar

Z699 0516

EMC:

Option: Special scaling FA5xx 4…20 mA=__ … __ g/m³, ppm etc.

Z699 0514

In acc. with DIN EN
61326-1

Option: connection thread FA5xx, 5/8" UNF

Z699 0511

Operating temperature:-20…50 °COption: surface condition FA 5xx, free of oil & grease

Z699 0517

Connection:

Ethernet-Interface for VA 500/520 and FA 500

Z695 5006

Ethernet-Interface PoE for VA 500/520 and FA 500

Z695 5007

M-Bus board for VA 500/520 and FA 500

Z695 5004

2 x M12, 5-pin for analogue output, Modbus-RTU
and alarm output, M-Bus(optional)
Ethernet (PoE) (optional)

PC connection:

Modbus-RTU interface(RS 485)

Output: (3-wire)

4…20 mA = -80…20 °Ctd
4…20 mA = -60…30 °Ctd
4…20 mA = -20…50 °Ctd

Burden for analogue
output:< 500 ΩAlarm relay:

NC, max. 60 VDC, 0.5 A

Screw-in thread:

G 1/2″

Dimensions housing:

76.5 x 85 x 75 mm (WxHxD)

Further accessories:
Standard measuring chamber for compressed air up to 16 bar

0699 3390

High pressure measuring chamber up to 350 bar

0699 3590

CS Service Software for FA/VA sensors incl. PC connection set,
USB connection and interface adapter to the sensor

0554 2007

Mains unit in wall housing for maximum 2 sensors of the series
VA/FA 5xx, 100-240 V, 23 VA, 50-60 Hz / 24 VDC, 0.35 A

0554 0110

AC adapter plug 100-240 VAC / 24 VDC for VA/FA 5xx

0554 0109

Calibration and adjustment:
Precision calibration at -40 °Ctd or +3 °Ctd incl. ISO certificate

0699 3396

www.cs-instruments.com

57