OVERVIEW
 
The SUTO S215 Dew Point Sensor provides reliable dew point monitoring in industrial applications, with long-term stability and high accuracy over the full range of -20 … +50 °C Td. Along with its compact design, this makes it the ideal solution for compressed air and gas dew point measurements in refrigeration dryers.
FEATURES
Dew Point Monitoring According to ISO 8573-1
 The plug-and-play dew point solution monitors the compressed air quality and purity according to the ISO 8573-1 standard. Meeting these requirements helps ensure fridge-dryer efficiency and reliability.
 Output Signals for Great Flexibility
 The dew point transmitter is available with 2-wire or 3-wire analog 4… 20 mA output signals, as well as Modbus/RTU digital interface. By offering various output signals, the sensor can be integrated seamlessly into any process.
 Modbus Sensor Network with S331
 The Modbus/RTU bus allows connecting several devices to a single bus line via Daisy-Chain. For example, up to 16 devices to a STUO Data Logger S331. The S331 is a powerful yet cost-efficient data logger and display solution.
 Pressure Sensor and OLED Display
 The S215 is offered with an integrated pressure sensor, combining a pressure and dew point sensor into a single instrument. The optional OLED display directly mounted on the sensor provides real-time values at the point of use. The display can be rotated by 340 ° to fit in any application. (Not available with 2-wire option)

APPLICATION SCENES

Fridge drier applications where dew points in the range of -20… +50 °C Td must be measured

SPECIFICATION

MEASUREMENT
Dew Point
Accuracy	± 1 °C Td (0 ... 50 °C Td) ± 2 °C Td (-20 ... 0 °C Td)
Selectable units	°C, °F, bar(g), MPa(g), psi(g), % rH, g/m³, mg/m³, g/m³ atm., mg/m³
Measuring range	-20 ... +50 °C Td
Repeatability	0.25 % from measured value
Sensor	Polymer
Response time (t90)	0 °C Td ➞ -20 °C Td ≤ 50 sec -20 °C Td ➞ 0 °C Td ≤ 35 sec @ 4 l/min
Pressure
Accuracy	0.5 % FS
Measuring range	0 ... 1.6 MPa
Sensor	Piezo-resistiv
Temperature
Accuracy	+/- 0.3 °C
Measuring range	-30 ... +70 °C
Sensor	Pt100
Reference conditions
Wählbare Bedingungen	20 °C 1000 mbar (ISO1217), 0 °C 1013 mbar (DIN1343) Freely adjustable

SIGNAL INTERFACE & SUPPLY
Analog output
Signal	4 ... 20 mA 2-wire or 4 ... 20 mA 3-wire
Scaling	4 mA = -60; 20 mA = +20 °C Td; freely adjustable
Load	250R
Update rate	3/sec
Fieldbus
Protocol	Modbus/RTU
Update rate	1/sec
Supply
Voltage supply	15 ... 30 VDC
Current consumption	2-wire: 4 ... 20 mA 3-wire: 40 mA @ 24 VDC 3-wire with Display: 50 mA @ 24 VDC

GENERAL DATA
Configuration
PC Software	S4C-DP Application
Display (Optional)
Integrated	0.66” OLED display, indicates the measured value and unit
Material
Process connection	Stainless steel 1.4301 (SUS 304)
Housing	Display cover: PC + ABS
Sensor	Polymer + Quartz-Crystal
Metal parts	Sinter filter (stainless steel)
Miscellaneous
Electrical connection	M12, 5-pole
Protection class	IP65
Approvals	CE
Process connection	G 1/2” (ISO 228/1)
Weight	180 g
Operating conditions
Medium	Air, Argon, O₂, N₂, CO₂*
Medium quality	ISO 8573-1: 4.6.3 or better
Medium temperature	-30 ... +70 °C
Medium humidity	≤ 20 °C Td
Operating pressure	0.1 ... 1.6 MPa
Ambient temperature	0 ... +50 °C
Ambient humidity	0 ... 100 % rH
Storage temperature	-20 ... +50 °C
Transport temperature	-30 ... +70 °C

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SUTO S215 Dew Point Sensor For Fridge Dryers

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SUTO S215 Dew Point Sensor For Fridge Dryers

S215 Dew Point Transmitters for Fridge Dryers (-20… +50 °C Td)

MEASUREMENT

SIGNAL INTERFACE & SUPPLY

GENERAL DATA