The SUTO S401 Insertion type, Compressed Air Flow Meter offers an easy to use and affordable compressed air and gas monitoring solution. Due to the wide measurement range and high reliability, the flow meter can be used in various applications.
Made in Germany. brand SUTO, model S401
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Thermal Mass Flow Technology
The S401 is a thermal mass flow meter, based on its measurement principle it’s not required to compensate the compressed air pressure and temperature. So, there is no need of any additional temperature and pressure measurements to measure the standard flow and the consumption.
Measurement of Different Gases
The S401 is well suited to be used in any other gases such as Nitrogen, CO2 and many other technical gases with the use of the thermal mass principle. Gas types can be easily switched in the sensor settings with pre-defined gas calibrations for various gases to maintain accuracy. The S401 sensor technology offers a high resolution and a high sampling rate, which results in a fast and precise measurement. The flow meter can save two calibration curves, and so the sensor can be used in two different gases without any loss of accuracy.
Optional Color Display
The optional color display is designed to show all measured values such as actual flow and total consumption. The display can be used to manage the sensor settings like pipe diameters, gas types and output settings.
Various Signal Outputs
The S401 Flow Meter offers different signal output options. It can be equipped with an isolated analog and pulse output to read out the compressed air flow and the total compressed air consumption.
Alternatively, a Modbus/RTU or Modbus/TCP interface can be used to access all measured values via the digital interface. The S401 can also be equipped with a 2-wire M-Bus output for digital meter reading.
This allows the sensor to be easily connected to SUTO displays, like the SUTO S331 Data Logger and/or third party displays and PLCs. The S401 can also be connected directly to monitoring software solutions.
Easy Installation
With easy installation under pressure through a standard ball valve, it can be simply removed and re-installed for calibrations. This means the shutdown of the compressed air systems as well as the resulting downtime and costs can be avoided. Various settings such as gas type, flow unit and reference standards, can be set ex-factory according to your needs.
Online Readings and Configuration Through Smartphone App
The free S4C-FS mobile phone app helps the user to easily configure the sensor to their needs. The app gives you the option to change settings wirelessly on site. Managing compressed air has never been easier.
Monitoring of efficiency and performance of compressed air and gas systems
| MEASUREMENT | |
| Flow | |
| Accuracy | 1.5 % of reading ± 0.3 % FS (optional 1 % of reading) |
| Selectable units | m3/h, m3/min, l/min, l/s, cfm, kg/h, kg/min, kg/s |
| Repeatability | 0.25 % of reading |
| Sensor | Thermal mass flow sensor |
| Sampling rate | 10 samples / sec |
| Turndown ratio | 200:1 |
| Response time (t90) | 0.1 sec |
| Consumption | |
| Selectable units | m3, ft3, l |
| 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 (4-wire), isolated |
| Scaling | 0 … max flow, freely adjustable |
| Load | max. 250 Ohm |
| Update rate | Value updated ever 1 sec |
| Pulse output | |
| Signal | Switch output, normally open, max. 30 VDC, 20 mA |
| Scaling | 1 pulse per consumption unit (selectable) |
| Fieldbus | |
| Protocol | Modbus/RTU, Modbus/TCP |
| Update rate | Value updated ever 1 sec |
| Supply | |
| Voltage supply | 15 … 30 VDC |
| Current consumption | max. 200 mA |
| GENERAL DATA | |
| Configuration | |
| Wireless | S4C-FS App for mobile phones |
| PC Software | USB Service Kit + Software |
| Others | Display with 2 touch buttons |
| Display | |
| Integrated | 2.4” color graphic display with 3 touch buttons |
| Material | |
| Process connection | Stainless steel 1.4404 (SUS 316L) |
| Housing | PC + ABS |
| Sensor | Ceramic, glass coated |
| Metal parts | Stainless steel 1.4404 (SUS 316L) |
| Miscellaneous | |
| Electrical connection | 2 x M12 (5 pole); 1 x M12 (8-pole x-coded) for TCP |
| Protection class | IP65 |
| Approvals | CE, RoHS, FCC |
| Process connection | S401: G1/2″ (ISO 228/1)
S421: 带R型螺纹或法兰的测量部分 |
| Weight | S401: 0.9 kg
S421: 0.4公斤（不含测量部分）”。 |
| Operating conditions | |
| Medium | Air, N2, O2, CO2 and other gases |
| Medium quality | ISO 8573: 4.4.3 or better |
| Medium temperature | -30 … +140 °C |
| Medium humidity | < 90 % rH, no condensation |
| Operating pressure | max. 5.0 MPa (> 1.6 MPa need installation device) |
| Ambient temperature | -30 … +70 °C, -10 … +50 °C (with display) |
| Ambient humidity | < 99 % rH |
| Storage temperature | -30 … +70 °C |
| Transport temperature | -30 … +70 °C |
| Pipe sizes | S401: ½” … 12” (bigger pipes on request) S421: ½” … 3” |
| VOLUMETRIC FLOW RANGES | ||||||
| Pipe Specifications | S401 | S421 | ||||
| Anschlussgewinde | DN | DI (mm) | S401-S (m3/h) | S401-M (m3/h) | S401-H (m3/h) | Measuring range from to |
| ½” | DN15 | – | – | 0.5 … 90 m3/h | ||
| ¾” | DN20 | – | – | 0.9 … 170 m3/h | ||
| 1” | DN25 | 27.3 | 0.5 … 147.7 | 0.6 … 294.7 | 0.6 … 356.9 | 1.5 … 290 m3/h |
| 1¼” | DN32 | 36.0 | 0.9 … 266.3 | 1.2 … 531.5 | 1.2 … 643.5 | 2 … 500 m3/h |
| 1½” | DN40 | 41.9 | 1.2 … 366.7 | 1.5 … 731.9 | 1.5 … 886.2 | 3 … 700 m3/h |
| 2” | DN50 | 53.1 | 2.0 … 600.1 | 2.5 … 1197.6 | 3.0 … 1450.0 | 4 … 1000 m3/h |
| 2½” | DN65 | 68.9 | 3.5 … 1026.5 | 5.0 … 2048.6 | 5.0 … 2480.4 | 6 … 1500 m3/h |
| 3” | DN80 | 80.9 | 5.0 … 1424.4 | 7.0 … 2842.7 | 7.0 … 3441.9 | 8 … 2500 m3/h |
| 4” | DN100 | 100.0 | 10 … 2183.3 | 12 … 4357.2 | 12.0 … 5275.7 | |
| 5” | DN125 | 125.0 | 13 … 3419.6 | 18 … 6824.4 | 18.0 … 8263.1 | |
| 6” | DN150 | 150.0 | 18 … 4930.1 | 25 … 9838.9 | 25.0 … 11913.1 | |
| 8” | DN200 | 200.0 | 26 … 8785.6 | 33 … 17533.3 | 42.0 … 21229.5 | |
| 10” | DN250 | 250.0 | 40 … 13743.9 | 52 … 27428.5 | 60.0 … 33210.7 | |
| 12” | DN300 | 300.0 | 60 … 19814.8 | 80 … 39544.1 | 100.0 … 47880.4 | |
You can request the necessary certificates, documentation, instructions and user manuals for SUTO S401 using the special form.
You can buy SUTO S401 in UK or Europe at a favourable price in «DOLCHETRADE» by leaving a request on the website, by phone +441225535040 or by email dolce@dolcetrade.com. SUTO S401 price are subject to change depending on exchange rates. We deliver instruments by transport companies in the United Kingdom and Europe.
