S211
S211 Dew Point Sensor for Desiccant Dryers (-60… +20 °C Td)
Ideal dew point sensor to monitor desiccant dryers with a range of -60 … +20 °C Td.

Accurate Dew point readings after desiccant dryers

Precise measurement with ± 2 °C Td accuracy

Integrated optional display for on-site values

Flexible installation thanks to the compact design

Integrated optional pressure sensor

Compressed air quality monitoring of humidity

4 ... 20 mA 2-wire / 3-wire and Modbus/RTU

Operating pressure of 0 ... 1.6 MPa (Optional 35.0 MPa)
The SUTO S211 Compact Dew Point Sensor provides an affordable and reliable dew point monitoring solution for industrial applications in accordance to ISO 8573-1. It’s compact design and great features makes it the perfect choice for dew point measurements in desiccant dryers.
Redesigned for our customers’ needs
The new SUTO Dew Point Sensors have been redesigned from ground up, integrating the latest technology and all our experience. The sensors are fully backwards compatible to existing compressed air and gas installations.
Dew Point, Pressure and Temperature
The sensor is equipped with an integrated pressure sensor, combining dew point, temperature and pressure monitoring into a single instrument.
User-friendly Outputs
The S211 Dew Point Sensor is perfectly suited to be integrated into process controls or high-level monitoring systems. Various output options are offered for a seamless integration: 4 … 20 mA 2-wire + SDI; 4 … 20 mA 3-wire + SDI; 4 … 20 mA 3-wire +; Modbus/ RTU. The S211 is easily connected to the SUTO S330/331 Displays / Data Logger as well as the SUTO Portable Data Logger S551.
Optional OLED Display
The optional OLED display directly mounted on the S211 provides real-time values on-site. The display can be easily rotated by 340 ° to adjust to any application.
Long Lasting Materials
The main body is made from high class aluminum alloy with a soft finish. The process connection material is 1.4301 (SUS 304) stainless steel, made to last forever.
The top cover is made from aluminum with the same quality as the main body.
Dew Point Sensor Series Comparison
Model | S211 | S215 | S220 |
---|---|---|---|
Dew point | -60 … +20 °C Td | -20 … +50 °C Td | -100 … +20 °C Td |
Temperature | -30 … +70 °C | -30 … +70 °C | -30 … +70 °C |
Pressure | 0 … 1.6 MPa | 0 … 1.6 MPa | 0 … 1.6 MPa |
Application | In desiccant dryers | In fridge dryers | In high-tech applications |
SUTO Exchange Service
The exchange calibration service eliminates downtime and enables users to have a seamless record of their dew point measurements.
The user receives a calibrated instrument in advance with a calibration certificate and the same instrument settings. The onsite instrument is then switched against the calibrated one and returned to the supplier. More information about the SUTO Exchange Service can be found here.
Please contact us here for consultation or special requests, such as custom dew point ranges or different gas types.
Dew point measurement in desiccant dryer applications where dew points down to -60 °C Td must be measured
MEASUREMENT | |
Dew Point | |
Accuracy | ± 1 °C Td (0 ... 20 °C Td) ± 2 °C Td (-60 ... 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 | -60 ... +20 °C Td |
Repeatability | 0.25 % from measured value |
Sensor | Polymer |
Response time (t90) | 0 °C Td ➞ -60 °C Td ≤ 280 sec -60 °C Td ➞ 0 °C Td ≤ 65 sec @ 4 l/min |
Pressure | |
Accuracy | 0.5 % FS |
Measuring range | 0 ... 1.6 MPa |
Sensor | Piezo resistive type |
Temperature | |
Accuracy | +/- 0.3 °C |
Measuring range | -30 ... +70 °C |
Sensor | Pt100 |
Reference conditions | |
Selectable conditions | 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 |
S211 / S215 / S220
ManualsS211 / S215 / S220
Info sheetsS201/ S211/ S212/ S215/ S217/ S220/ S230/ S231/ S305/ S505/ S520 – CE & UKCA DECLARATION OF CONFORMITY
CE / UKCA DOCS4C-DP S2XX Service Software: V1.4
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