CS Instruments FA 510/515 .CS Instruments FA 510/515 In addition to the previously common 4…20 mA analog output the new generation of dew point sensors have a digital RS 485 interface (Modbus-RTU).CS Instruments FA 510/515 In addition to the previously common 4…20 mA analog output the new generation of dew point sensors have a digital RS 485 interface (Modbus-RTU). All values e. g. dew point, temperature, and 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 excellent long-term stability and show reliable measured values.

Features

Analogue output 4…20 mA
Precise, long-term stability
Quick response time
Measuring range -20…50°Ctd
NEW: Modbus-RTU interface
Sensor diagnosis on site by means of hand-held instrument or CS Service Software

Applications

Dew point measurement in the compressed
air after adsorption dryer, membrane dryer,
refrigeration dryer
Residual moisture/dew point measurement in
gases such as oxygen, nitrogen, argon…
Residual moisture/dew point measurement
after granulate dryers in the plastics industry

Specifications

Measuring range: -80…20 °Ctd, -20…50 °Ctd
Accuracy: ± 1 °C at 50…-20 °Ctd
± 2 °C at -20…-50 °Ctd
± 3 °C at -50…-80 °Ctd
Pressure range: -1…50 bar
Special version up to 350 bar
Power supply: 24 VDC (10…36 VDC)
Protection class: IP 65
EMC: In acc. with DIN EN 61326-1
Operating temperature:
-20…70 °C
Connection: M12, 5-pin
PC connection: Modbus-RTU interface (RS
485)
Analogue output: 4…20 mA = -80…20 °Ctd
4…20 mA = -20…50 °Ctd
FA 510: 4…20 mA (3-wire)
FA 515: 4…20 mA (2-wire)
Burden for analogue
output:
< 500 Ω
Screw-in thread: G 1/2″
Optional: UNF 5/8″, NPT 1/2″
Dimensions: Ø 30 mm, length approx.
130 mm
Via service software:
Choose units
Scaling
% RH, °Ctd, g/m³, mg/m³,
ppm V/V
4…20 mA change