Audited Supplier
Suto S211/S215/S220 Gas Dew Point Sensor
The SUTO S211 compact dew point meter is an economical and reliable dew point monitoring solution for industrial applications that comply with ISO 8573-1. Compact and powerful, it is the perfect choice for measuring the dew point of adsorption dryers.
The SUTO S215 dew point meter provides reliable dew point monitoring in industrial applications. The +50 °C Td offers long-term stability and high accuracy over the entire range. In addition, its compact design makes it an ideal solution for measuring the dew point of compressed air in freeze-type dryers.
The SUTO S220 dew point meter provides reliable and long-term stable dew point monitoring for compressed air and gases in industrial applications. The dew point meter has a measuring range of -100... The +20 °C Td is ideal for measuring dew points in high-tech industries and under special conditions that require compliance with ISO 8573-1 for compressed air quality.
1. Compact size makes them ideal for dryer installations
2. Optional display for on-site values. Display can be rotated by 340 ° to fit your needs
3. User friendly signal outputs to connect to process controls or monitoring systems
4. IP65 casing provides robust protection
5. Low maintenance costs due to stable and reliable measurements which increase calibration intervals
6. Measured values available in several units: °C Td • g/m³ • mg/m³ • ppmv • g/kg (@ reference pressure) • % rH and more
7. High accuracy of 1° .. 2°c dew point
Unique triple sensor
SUTO's QCM sensor is the result of years of high-tech research and development. The sensor is designed for low dew points that cannot be measured by other sensors. The S220 combines QCM with a well-known polymer sensor that automatically switches between the two sensor elements as needed, making it the first dew point meter in the world to achieve accurate measurement over the entire range -100 °C Td to +20 °C Td.
By installing an optional pressure sensor in the dew point meter, SUTO integrates four sensor elements, polymer, QCM, Pt100, and pressure sensors, into one instrument.
Various output connections
The S220 dew point meter supports 2-wire or 3-wire analog 4... 20 mA output signal, also provides Modbus/RTU digital interface.
These different signal outputs allow the S220 to be seamlessly integrated into the user's production process, benefiting from great flexibility. The S220 can be easily connected to SUTO's display and data loggers S330/331 and S551 for optimal fixed or portable data recording, and can also be connected to third-party devices.
An optional display displays the measured values
An optional OLED display mounted directly on the dew point meter is used to read measurements in real time in the field. The display can be easily rotated 340°, suitable for various occasions. The display cover is made of strong polycarbonate and ABS reinforced to work in harsh environments.
The strong material guarantees long-term stable measurement
The body of the S220 is made of high-grade aluminum alloy with a soft finish. The process connection material is 1.4301 (SUS 304) stainless steel for durability. The top cover is made of aluminum of the same quality as the main body.
Comparison of dew point series
| Model number | S211 | S215 | S220 |
| dew-point | -60 … +20 °C Td | -20 … +50 °C Td | -100 … +20 °C T |
| temperature | -30 … +70 °C | -30 … +70 °C | -30 … +70 °C |
| stress | 0 … 1.6 MPa | 0 … 1.6 MPa | 0 … 1.6 MPa |
| Apply | Adsorption dryer | Freezer dryer | High-tech application |
| Mode | S211 | S215 | S220 |
| Measurement Range | Dew point -60 ... +20 °C Td Temperature Temperature Pressure 0 ... 1.6 MPa | Dew point -20 ... +50 °C Td Temperature -30 ... +70 °C Pressure 0 ... 1.6 MPa | Dew point -100 ... +20 °C Td Temperature -30 ... +70 °C Pressure 0 ... 1.6 MPa |
| Dew point sensor | Polymer | Polymer | Polymer + QCM |
| Operating Pressure | -0.1 ... 1.6 MPa -0.1 ... 35.0 MPa optional | -0.1 ... 1.6 MPa -0.1 ... 35.0 MPa optional | -0.1 ... 1.6 MPa |
| Response time (t90)@4 l/min | 0 °C Td → -60 °C Td ≤ 280 sec -60 °C Td → 0 °C Td ≤ 65 sec | 0 °C Td → -20 °C Td ≤ 50 sec -20 °C Td → 0 °C Td ≤ 35 sec | 0 °C Td → -80 °C Td ≤ 420 sec -80 °C Td → 0 °C Td ≤ 90 sec |
| Accuracy | Dew point +/- 1 °C Td (0 ... 20 °C Td) +/- 2 °C Td (-70 ... 0 / +20 ... +50°C Td) +/- 3 °C Td (-100 ... -70 °C Td) | ||
| Temperature +/- 0.3 °C | |||
| Pressure 0.5 % FS | |||
| Process connection | G 1/2" (ISO 228/1), stainless steel 1.4301 (SUS 304) | ||
| Operating conditions | Medium Temp.: -30 ... +70 °C / Ambient Temp. : 0 ... +50 °C / Ambient Humidity: 0 ... 100 % rH | ||
| Materials | Casing: Aluminum alloy / Process thread: Stainless steel 1.4301 (SUS 304) / Display cover: PC + ABS | ||
| Classification / Approval | IP65 / CE | ||
| Sensor protection | Sinter filter (stainless steel) | ||
| Transport & Storage | Transport Temperature: -30 ... + 70 °C / Storage Temperature: -20 ... + 50 °C | ||
| Weight | 180 g | ||
| Measured gases (Medium) | Air, Argon, O2, N2, CO2* | ||
| Output Signal | 4 ... 20 mA 2-wire + SDI, 4 ... 20 mA 3-wire + SDI, 4 ... 20 mA 3-wire + Modbus/RTU | ||
| Sensor types | Temperature sensor: Pt100 / Pressure sensor: Piezo resistive type | ||
| Display option | 0.66" OLED display, indicates the measured value and unit | ||
| Supply Voltage | 15 ... 30 VDC | ||
