The SUTO S421 Inline Thermal Mass Flow Sensor provides reliable compressed air and gas flow and consumption monitoring in main and header lines with a wide measuring range. With the high resolution and sampling rate, a fast and precise measurement is achieved.
Made in Germany. brand SUTO, model S421
International delivery to United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Saudi Arabia, Bahrain, Oman and other Middle Eastern countries.
Our warehouses are located in UAE. Delivery to other countries (Europe, North and South America, Asia, Africa) is discussed individually.
Retail price from $1 432
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Supply to United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Bahrain, Oman and other countries
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The S421 flow meter stores two calibration curves, allowing the sensor to be used with two different gases without losing accuracy—for example, to measure compressed air flow—and to quickly switch between them (such as from compressed air to nitrogen) via the app or the display. The optional color display is designed to show all measured values, such as flow rate and total consumption. At the same time, the display can be used to manage sensor settings, such as pipe diameter, gas type, or output signal and reference condition settings. The flow meter supports 4 output signal options: isolated analog and pulse output, Modbus/RTU, Modbus/TCP, and M-Bus.
The flow meter’s parameters are reliably protected against unauthorized changes thanks to a unique access QR code for each device.
Various settings, such as gas type, flow measurement unit, and reference standards, can be factory-set according to your needs. If you need to change settings on-site, you can use the free S4C-FS smartphone app. This allows you to change settings wirelessly on-site with a single tap on your smartphone.
Installation is performed through a measuring section with a specified diameter, equipped with an R-thread or flange connection. The sensor is supplied with factory calibration for the selected section.
Application
Features
Benefits
| 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 | Measuring section with R-thread or Flange |
| Weight | 0.4 kg (without measuring section) |
| 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 | ½” … 3” |
| VOLUMETRIC FLOW RANGES | ||||||
| Pipe Specifications | S401 | S421 | ||||
| Connection thread | 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 | Availability | Price | Qty | Buy |
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| S695 4120 | S421 Thermal Mass Flow Meter (Inline), 1.6 MPa | Delivery time from 12 weeks | On request |
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| S695 4121 | S421 Thermal Mass Flow Meter (Inline), 4.0 MPa | Delivery time from 12 weeks | On request |
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| A1003 | Option: Flow Medium: No 2nd Gas | Delivery time from 12 weeks | On request |
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| A1007 | Option: Flow medium Air | Delivery time from 12 weeks | On request |
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| A1008 | Option: Flow medium CO2 | Delivery time from 12 weeks | On request |
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| A1009 | Option: Flow medium O2 (cleaning for oil and grease-free) | Delivery time from 12 weeks | On request |
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| A1010 | Option: Flow medium N2 | Delivery time from 12 weeks | On request |
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| A1011 | Option: Flow medium N2O | Delivery time from 12 weeks | On request |
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| A1012 | Option: Flow medium Argon | Delivery time from 12 weeks | On request |
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| A1013 | Option: Flow medium Natural Gas | Delivery time from 12 weeks | On request |
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| A1014 | Option: Flow medium H2 (For real gas calibration. Please consult manufacturer for this option in advance) | Delivery time from 12 weeks | On request |
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| A1015 | Option: Other gas (specify gas or gas mix) | Delivery time from 12 weeks | On request |
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| A1016 | Option: Flow medium He (real gas calibration) | Delivery time from 12 weeks | On request |
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| A1017 | Option: Flow medium Propane C3H8 | Delivery time from 12 weeks | On request |
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| A1301 | S421/S452: R thread connection, DN15, ½" | Delivery time from 12 weeks | On request |
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| A1302 | S421/S452: R thread connection, DN20, ¾" | Delivery time from 12 weeks | On request |
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| A1303 | S421/S452: R thread connection, DN25, 1" | Delivery time from 12 weeks | On request |
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| A1304 | S421/S452: R thread connection, DN32, 1.25" | Delivery time from 12 weeks | On request |
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| A1305 | S421/S452: R thread connection, DN40, 1.5" | Delivery time from 12 weeks | On request |
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| A1306 | S421/S452: R thread connection, DN50, 2" | Delivery time from 12 weeks | On request |
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| A1307 | S421/S452: R thread connection, DN65, 2.5" | Delivery time from 12 weeks | On request |
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| A1308 | S421/S452: R thread connection, DN80, 3" | Delivery time from 12 weeks | On request |
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| A1321 | S421/S452 flange connection EN 1092-1, PN40, DN15, ½" | Delivery time from 12 weeks | On request |
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| A1322 | S421/S452 flange connection EN 1092-1, PN40, DN20, ¾" | Delivery time from 12 weeks | On request |
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| A1323 | S421/S452 flange connection EN 1092-1, PN40, DN25, 1" | Delivery time from 12 weeks | On request |
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| A1324 | S421/S452 flange connection EN 1092-1, PN40, DN32, 1.25" | Delivery time from 12 weeks | On request |
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| A1325 | S421/S452 flange connection EN 1092-1, PN40, DN40, 1.5" | Delivery time from 12 weeks | On request |
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| A1326 | S421/S452 flange connection EN 1092-1, PN40, DN50, 2" | Delivery time from 12 weeks | On request |
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| A1327 | S421/S452 flange connection EN 1092-1, PN40, DN65, 2.5" | Delivery time from 12 weeks | On request |
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| A1328 | S421/S452 flange connection EN 1092-1, PN40, DN80, 3" | Delivery time from 12 weeks | On request |
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| A1341 | S421/S452 flange connection, DN15, 1/2", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1342 | S421/452 flange connection, DN20, 3/4", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1343 | S421/452 flange connection, DN25, 1", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1344 | S421/452 flange connection, DN32, 1-1/4", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1345 | S421/452 flange connection, DN40, 1-1/2", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1346 | S421/452 flange connection, DN50, 2", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1347 | S421/452 flange connection, DN65, 2-1/2", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1348 | S421/452 flange connection, DN80, 3", class300, ANSI/B16.5 | Delivery time from 12 weeks | On request |
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| A1407 | S401/S421: Vacuum / Atmospheric range (1/3 of standard range) | Delivery time from 12 weeks | On request |
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| A1409 | S401/S421: Standard calibration | Delivery time from 12 weeks | On request |
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| A1410 | Option: Isolated 4 … 20 mA + Pulse output | Delivery time from 12 weeks | On request |
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| A1411 | Option: Modbus/RTU output | Delivery time from 12 weeks | On request |
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| A1424 | Option: Modbus/TCP output with PoE support | Delivery time from 12 weeks | On request |
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| A1413 | S401/S421: 4 … 20 mA + pulse output (pin compatible to S400 / 420) | Delivery time from 12 weeks | On request |
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| A1420 | S401/S421/S430: Color graphic display, 2.4" with keypad | Delivery time from 12 weeks | On request |
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| A1426 | S421: Standard range version | Delivery time from 12 weeks | On request |
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You can request the necessary certificates, documentation, instructions and user guide for SUTO S421 using the special form.
You can buy SUTO S421 in UAE at a price starting from 1432 $ in «Texair FZCO» by leaving a request on the website, by phone +441225535040 or by email rop@texairmeasure.ae. SUTO S421 price are subject to change depending on exchange rates. We deliver instruments by transport companies in United Arab Emirates, Kuwait, Qatar, Saudi Arabia, Saudi Arabia, Bahrain and other Middle Eastern countries.
See also: Flow Meters for Compressed Air and Gas
