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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Our warehouse is located in Riga, Latvia.
price by request
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Due to thermal mass flow measurement, the flow meter is well suited for use with various gases such as nitrogen or many other technical gases. The S401 sensor technology provides high resolution and a high sampling rate, resulting in fast and accurate measurement. The flow meter is capable of storing two calibration curves, allowing the sensor to be used with two different gases without loss of accuracy.
The optional color display is designed to show all measured values, such as actual flow rate and total consumption. At the same time, the display can be used to adjust sensor settings, such as pipe diameter, gas type, or output parameters.
The S401 flow meter offers two signal output options. It can be equipped with an isolated analog and pulse output for reading compressed air flow rate and total compressed air consumption. Alternatively, a Modbus/RTU interface can be used to access all measured values via a digital interface.
The SUTO S401 insertion type flow meter is an easy-to-use and cost-effective solution for compressed air and gas monitoring. Thanks to its wide measuring range and high reliability, the device is suitable for a variety of industrial applications. Due to the thermal mass flow principle, the device does not require pressure and temperature compensation of the compressed air. This means that no additional pressure and temperature sensors are needed for standard flow and consumption measurement – simplifying installation and reducing system cost.
Because the flow meter can be easily installed through a standard ball valve, it can also be easily removed for calibration without shutting down the compressed air system. Device parameters – gas type, flow units, reference conditions (ISO1217 / DIN1343) – can be preset ex-factory according to your requirements. This provides a sensor ready for operation without additional on-site configuration. If on-site settings need to be changed, you can use the free S4C-FS mobile app. The app allows you to wirelessly change sensor settings on site and view live readings directly from your smartphone. This enables you to adjust settings wirelessly on site with a single touch on your smartphone. For any special requirements, such as non-standard flow ranges or different gas types, please contact us.
The flow meter can be easily connected to SUTO data loggers (e.g., S331), third-party PLCs, and monitoring systems. Digital interfaces enable direct integration into energy management and analysis software.
Application
Features
| 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 | G1/2″ (ISO 228/1) |
| Weight | 0.9 kg |
| 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 | |
| Model | Description | Price |
| S695 4100 | S401 Thermal Mass Flow Meter (Insertion), 220 mm shaft | On request |
| S695 4101 | S401 Thermal Mass Flow Meter (Insertion), 300 mm shaft | On request |
| S695 4102 | S401 Thermal Mass Flow Meter (Insertion), 400 mm shaft | On request |
| S695 4103 | S401 Thermal Mass Flow Meter (Insertion), 160 mm shaft | On request |
| A1003 | Option: Flow Medium: No 2nd Gas | On request |
| A1007 | Option: Flow medium Air | On request |
| A1008 | Option: Flow medium CO2 | On request |
| A1009 | Option: Flow medium O2 (cleaning for oil and grease-free) | On request |
| A1010 | Option: Flow medium N2 | On request |
| A1011 | Option: Flow medium N2O | On request |
| A1012 | Option: Flow medium Argon | On request |
| A1013 | Option: Flow medium Natural Gas | On request |
| A1014 | Option: Flow medium H2 (For real gas calibration. Please consult manufacturer for this option in advance) | On request |
| A1015 | Option: Other gas (specify gas or gas mix) | On request |
| A1016 | Option: Flow medium He (real gas calibration) | On request |
| A1017 | Option: Flow medium Propane C3H8 | On request |
| A1401 | S401: Max range | On request |
| A1402 | S401: High speed range | On request |
| A1403 | S401/S421: Low range (1/3 of standard range) | On request |
| A1404 | S401/S421: High accuracy calibration (1%±0.3 % F.S.) | On request |
| A1405 | S401: Bi-directional calibration | On request |
You can request the necessary certificates, documentation, instructions and user guide for SUTO S401 using the special form.
You can buy SUTO S401 in Latvia at a price starting from price by request € in «OLIL SIA» by leaving a request on the website, by phone +371 672 70580 or by email olil@olil.lv. SUTO S401 price are subject to change depending on exchange rates. We deliver instruments by transport companies in Latvia, Estonia and Lithuania. Worldwide shipping to Europe, Asia, Africa, North and South America available on request.
See also: Flow meters