SUTO S421 Instruction And Operation Manual
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SUTO S421 Instruction And Operation Manual

Thermal mass flow sensor
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Instruction and operation manual
S421
Thermal mass flow sensor

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Summary of Contents for SUTO S421

  • Page 1 English Instruction and operation manual S421 Thermal mass flow sensor...
  • Page 2 The device is designed exclusively for the described application. SUTO offers no guarantee for suitability for any other purpose. SUTO is also not liable for consequential damage resulting from the delivery, capability, or use of this device.

  • Page 3: Table Of Contents

    10.2.2 Pulse Connection Diagrams (A1413).......28 10.3 Modbus output..............30 10.4 M-Bus output..............31 11 Configuration................32 11.1 Service app S4C-FS............32 11.2 Sensor display (optional)............33 11.2.1 Start-up..............34 11.2.2 Operations..............35 11.2.3 Menu map..............36 12 Calibration................38 13 Maintenance................38 14 Disposal or waste..............38 15 Appendix A Modbus communication example.......39 S421...

  • Page 4: Safety Instructions

    • Consider all regulations for electrical installations. • The system must be disconnected from any power supply during maintenance. • Any electrical work on the system is only allowed by authorized qualified personal. S421...
  • Page 5 • Always observe the direction of the flow when installing the sensor. The direction is indicated on the housing. • Do not exceed the maximum operating temperature at the sensor tip. • Avoid condensation on the sensor element as this will affect accuracy enormously. S421...

  • Page 6: Registered Trademarks

    • Avoid direct UV and solar radiation during storage. • For the storage, the humidity must be <90% with no condensation. 2 Registered trademarks SUTO ® Registered trademark of SUTO iTEC MODBUS ® Registered trademark of the Modbus Organization, Hopkinton, USA HART ®...

  • Page 7: Rf Exposure Information And Statement

    • Consult the dealer or an experienced radio/TV technician for help 。 • This device and its antenna(s) must not be co-located or operating in conjunction with any other antenna or transmitter. S421...

  • Page 8: Application

    4 Application 4 Application The S421 is the inline-type flow sensor that is designed to measure the consumption of compressed air and gases within the permissible operating parameters. (See chapter 6 Technical Data on the next page.) The S421 can measure the following values: •...

  • Page 9: Technical Data

    6 Technical Data 6 Technical Data 6.1 General FCC ID: 2ASK2-SUTO-001 Parameters Standard unit (flow): Other units (flow): /min, l/min, l/s, cfm, kg/h, kg/min, kg/s Units (Consumption): , ft , kg Reference conditions ISO1217 20°C 1000 hPa (Standard-Unit) DIN1343 0°C 1013.25 hPa (Norm-Unit)

  • Page 10: Electrical Data

    ±0.25% of reading *Specified accuracy is valid only within the minimum and maximum flow rates that are indicated in section on this page. 6.5 Volumetric flow ranges Inch S421 (m³/h) ½" DN15 0.5 ... 90 ¾" DN20 0.9 ... 170 1"...
  • Page 11 • To calculate flow ranges based on pipe sizes and reference conditions in your site, download and install the free "Flow range calculator" tool from http://www.suto-itec.com. To fast access the tool download page, enter "flowrange" (without spaces) in the search field.

  • Page 12: Dimensional Drawing

    1/2”/(DN15) 197.4 186.7 R 1/2” S421-3/4” 3/4”/(DN20) 200.2 186.7 R 3/4” S421-1” 1”/(DN25) 203.6 186.7 R 1” S421-1 1/4” 1 1/4”/ 207.9 186.7 R 1 1/4” (DN32) S421-1 1/2” 1 1/2”/ 210.9 186.7 R 1 1/2” (DN40) S421-2” 2”/(DN50) 216.9 186.7...
  • Page 13 [mm] [mm] (mm) (mm) (mm) [mm] S421-3/4” 3/4”/ 239.2 186.7 4xØ14 (DN20) S421-1” 1”/(DN25) 244.2 186.7 4xØ14 S421-1 1/4” 1 1/4”/ 256.7 186.7 4xØ18 (DN32) S421-1 1/2” 1 1/2”/ 261.7 186.7 4xØ18 (DN40) S421-2” 2”/(DN50) 269.2 186.7 4xØ18 S421-2 1/2”...
  • Page 14 4xØ15.7 (DN15) S421-3/4” 3/4”/ 245.4 186.7 117.3 82.5 4xØ19 (DN20) S421-1” 1”/ 248.7 186.7 123.9 88.9 4xØ19 (DN25) S421-1 1/4” 1 1/4”/ 253.4 186.7 133.3 98.5 4xØ19 (DN32) S421-1 1/2” 1 1/2”/ 264.4 186.7 155.4 114.3 4xØ22.3 (DN40) S421-2” 2”/ 269.3...

  • Page 15: Determining The Installation Point

    • The sensor is for indoor use only! At an outdoor installation, the sensor must be protected from solar radiation and rain. • It is strongly recommended not to install S421 permanently in a wet environment such as the place right after a compressor outlet.
  • Page 16 8 Determining the installation point The S421 sensor comes with a measuring section and a straight inlet section. Nevertheless, additional straight inlet sections must be added to the measuring section to meet the minimum inlet requirements. Please refer to the installation types below and select your additional inlet section 'LA' from the table.
  • Page 17 1100 1300 3. 90° Bend Section size DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 LA (mm) 1100 1300 4. 2 x 90° Bend Section size DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 LA (mm) 1100 1500 1700 S421...
  • Page 18 DN20 DN25 DN32 DN40 DN50 DN65 DN80 LA (mm) 1100 1500 1800 2400 3200 3800 8. Filter or similar (unknown objects) Section size DN15 DN20 DN25 DN32 DN40 DN50 DN65 DN80 LA (mm) 1100 1500 1800 2400 3200 3800 S421...

  • Page 19: Installation

    A1321 ... A1328 (Flange, EN-1092-1) A1341 ... A1348 (Flange, ANSI 16.5) 9.1 Installing the sensor The S421 is shipped with a mounted measurement section. Please make sure that the sensor is installed correctly to the flow direction in the tube.

  • Page 20: Removing The Sensor

    Re-installation after maintenance: 1. Place the O-ring into the recess of the connection nut. 2. Insert the sensor back to the pipe. (The S421 comes with the Poka-Yoke design for simple and error-free insertion.) 3. Tighten the connection nut.

  • Page 21: Electrical Connection

    A = M12 (5-pin); B = M12 (5-pin) Pulse compatible to S400 A = M12 (5-pin): A1424 Modbus TCP B = M12 (8-pin X-coded) General connection pins, male Ethernet connection pins, male (View onto the sensor connector) (View onto the sensor connector) S421...
  • Page 22 Modbus RTU data - Positive 4 ... 20 mA signal M-Bus: M-Bus data Negative 4 ... 20 mA signal N/A: Not applicable Pulse output ATTENTION! Do not screw the M12 connector using force. Otherwise it might damage the connecting pins. S421...

  • Page 23: Ethernet Connection

    When Modbus TCP is chosen as the sensor output, a 5 m 8-pore cable is supplied in the delivery package. The cable has the M12 and RJ45 plugs on the ends. RJ45 is used to connect the sensor to a PoE switch. Front view of the M12 plug, female S421...
  • Page 24 Orange (O) Rx+ / -Vb / +Vb White-Green (W-G) Pair 3 Rx- / -Vb / +Vb Green (G) NA / -Vb White-Brown (W-BR) Pair 4 NA / -Vb Brown (BR) NA/ +Vb White-Blue (W-BL) Pair 1 NA/ +Vb Blue (BL) S421...

  • Page 25: Sensor Signal Outputs

    0 to max flow. The corresponding flow rates to different pipe sizes can be calculated using the free "Flow range calculator" tool available in http://www.suto-itec.com. For more information about how to download, see section on page 10. For other ranges, please contact the manufacturer.
  • Page 26 10 Sensor signal outputs If the flow rate is too high, the S421 cannot output the pulses with default settings (one pulse per consumption unit). In this case, you can set the pulse to 1 pulse per 10 consumption units or 1 pulse per 100 consumption units, using the S4C-FS service App (S4C-FS) or a connected display.

  • Page 27: Pulse Connection Diagrams (A1410)

    10 Sensor signal outputs 10.2.1 Pulse Connection Diagrams (A1410) Using the isolated pulse switch (Connector B: Pin 2 and 3) Variant 1: Variant 2: S421...

  • Page 28: Pulse Connection Diagrams (A1413)

    10 Sensor signal outputs 10.2.2 Pulse Connection Diagrams (A1413) Using the isolated pulse switch (Connector B: Pin 4 and 5) Variant 1: Variant 2: S421...
  • Page 29 10 Sensor signal outputs Using the Pulse Output P+ (Connector A: Pin 5) Variant 1: Variant 2: *GND of the external pulse counter might be connected to -V of the sensor. S421...

  • Page 30: Modbus Output

    • In the Modbus TCP mode, a slave device does not support concurrent connections because it can respond to only one polling message at a time. Holding register (Modbus RTU and Modbus TCP) Register Channel description Resolution Format Length address Flow FLOAT 4-Byte Consumption UNIT32 4-Byte S421...

  • Page 31: M-Bus Output

    : 8-digit serial number of the sensor Manufacturer Code : 0x15C4 M-Bus version Baud rate : 2400 Response delay (ms) Response timeout (ms) : 100 Receive timeout (ms) : 500 Value register M-Bus Addr. Description Data bytes Total consumption 4-byte Flow 4-byte M-Bus status 4-byte S421...

  • Page 32: Configuration

    S4C-FS is an Android-based app that enables you to view measurement readings and change settings for SUTO flow sensors wirelessly. You can download S4C-FS from Google Play Store or SUTO website, and install it as you do for any apps on your Android devices.

  • Page 33: Sensor Display (Optional)

    • Change the sensor settings. Operation keys Enter key Press for >3 seconds to enter the configuration mode. Press to confirm your selection. Up key Press to choose a parameter item, entry box, or to Down adjust the value. S421...

  • Page 34: Start-Up

    Icons shown in the status bar Indicate status or warnings for the sensor in service. Icon Description Icon Description Calibration expired Pressure sensor damaged Temperature over Temperature sensor operating range damaged Flow over measuring Flow direction range Pressure over operating range S421...

  • Page 35: Operations

    3. Use the “Up” and “Down” keys to choose a setting that needs to be changed. 4. Use the “Up” and “Down” keys to select the desired entry box or adjust the values. 5. Press the “Enter” key to confirm the changes. S421...

  • Page 36: Menu Map

    11 Configuration 11.2.3 Menu map S421...
  • Page 37 11 Configuration S421...

  • Page 38: Calibration

    The sensor, the accessories, and its packings must be disposed of according to your local statutory requirements. The waste can also be carried by the manufacturer of the product. For this, please contact the manufacturer. S421...

  • Page 39: Appendix A Modbus Communication Example

    Coil address Hi 1 byte Coil address Hi 1 byte Coil address Lo 1 byte Coil address Lo 1 byte Data Hi 1 byte Data Hi 1 byte Data Lo 1 byte Data L 1 byte 2 bytes 2 bytes S421...
  • Page 40 1 byte Slave address 1 byte Function code 1 byte Function code 1 byte 2 bytes Byte count 1 byte Slave ID 2 bytes Device run 2 bytes indicator Product code 2 bytes Product name 20 bytes 2 bytes S421...
  • Page 41 S421...
  • Page 42 S421...
  • Page 43 S421...
  • Page 44 SUTO iTEC GmbH SUTO iTEC (ASIA) Co., Ltd. Grißheimer Weg 21 Room 10, 6/F, Block B, Cambridge Plaza D-79423 Heitersheim 188 San Wan Road, Sheung Shui, N.T. Germany Hong Kong Tel: +49 (0) 7634 50488 00 Tel: +852 2328 9782...

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