English Instruction and operation manual S402 Thermal mass flow sensor
Dear Customer, Thank you for choosing our product. Please read the operating instructions in full and carefully observed them before starting up the device. The manufacturer cannot be held liable for any damage which occurs as a result of non-observance or non-compliance with this manual. Should the device be tampered with in any manner other than a procedure which is described and specified in the manual, the warranty is void and the manufacturer is exempt from liability.
Table of Contents 1 2 3 4 5 6 Safety instructions........................................................................4 Registered trademarks..................................................................6 RF exposure information and statement..........................................7 Application..................................................................................8 Features......................................................................................8 Technical data.............
1 Safety instructions 1 Safety instructions Please check if this instruction manual matches the product type. Please observe all notes and instructions indicated in this manual. It contains essential information which must be observed before and during installation, operation and maintenance. Therefore this instruction manual must be read carefully by the technician and by the responsible user or qualified personnel.
1 Safety instructions ATTENTION! Permitted operating parameters! Observe the permitted operating parameters, any operation exceeding this parameters can lead to malfunctions and may lead to damage on the instrument or the system. • Do not exceed the permitted operating parameters. • Make sure the product is operated in its permitted limitations. • Do not exceed or undercut the permitted storage and operation temperature and pressure.
1 Safety instructions Storage and transportation • Make sure that the transportation temperature of the sensor is between -30 ... +70°C. • For storage and transportation, it is recommended to use the packaging which comes with the sensor. • Please make sure the storage temperature of the sensor is between -10 ... +50°C. • Avoid direct UV and solar radiation during storage. • For the storage the humidity must be <90%, no condensation.
3 RF exposure information and statement 3 RF exposure information and statement This equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance of 20 cm between the radiator and your body. This device complies with part 15 of the FCC rules.
4 Application 4 Application The S402 is a flow sensor that is designed to measure the consumption of compressed air and gases within the permissible operating parameters. These parameters can be found in chapter 6 Technical data. The S402 can measure the following values: • Volumetric flow of the compressed air or gas. • Total consumption of the compressed air or gas. The default factory settings are: Volumetric flow in m3/h and Total Consumption in m3.
6 Technical data 6 Technical data 6.1 General FCC ID：2ASK2-SUTO-005 Parameters Standard unit flow: m3/h Other units: m3/min, l/min, l/s, cfm, kg/h, kg/min, kg/s Consumption units: m3, ft3 , kg Reference conditions ISO1217 20°C 1000 mbar (Standard-Unit) DIN1343 0°C 1013.25 mbar (Norm-Unit) Principle of measurement Thermal mass flow Sensor Glass-coated resistive sensor Measuring medium Air, gas (non corrosive gas) Operating temperature -30 ... +140°C fluid temperature -30 ...
6 Technical data 6.3 Output-signals Analogue output Signal: 4 ... 20 mA, isolated Scaling: 0 to max flow Max load: 250R Pulse output 1 pulse per consumption unit, isolated switch, max. 30 VDC, 200 mA (pulse length: 10 ... 120 ms, depending on flow rate) Modbus output See chapter 10.3 6.4 Accuracy Accuracy* ±(2% of reading + 0.3% FS) Temperature drift: < 0.05%/K Stated accuracy at Ambient/process temperature 23°C ± 3°C Ambient/process humidity <90% Process pressure at 0.6 MPa Repeatability ±0.
6 Technical data 6.5 Volumetric flow ranges The measuring ranges are stated under the following conditions: • Standard flow in air • Reference pressure: 1000 hPa • Reference temperature: 20°C Inch DN Inner diameter (mm) S402-S (m³/h) S402-M (m³/h) 1" DN25 27.3 0.5 ... 147.7 0.6 ... 294.7 1¼" DN32 36.0 0.9 ... 266.3 1.2 ... 531.5 1½" DN40 41.9 1.2 ... 366.7 1.5 ... 731.9 2" DN50 53.1 2.0 ... 600.1 2.5 ... 1197.6 2½" DN65 68.9 3.5 ... 1026.5 5.0 ... 2048.6 3" DN80 80.
7 Dimensional drawing 7 Dimensional drawing 12 S402
8 Determining the installation point 8 Determining the installation point In order to maintain the accuracy stated in the technical data, the sensor must be inserted in the centre of a straight pipe section with unhindered flow characteristics. Unhindered flow characteristics are achieved if the section in front of the sensor (inlet) and behind the sensor (outlet) are sufficiently long, absolutely straight and free of obstructions such as edges, seams, curves and so on.
8 Determining the installation point 8.1 Reserving the inlet and outlet sections The thermal measuring principle may be sensible to inlet and outlet conditions. We recommend the following minimum straight inlet and outlet sections to ensure an accurate measurement. The S402 should be always installed upstream from obstacles like valves, filter, reductions etc. In common, the sensor should be installed as far as possible away from any disturbances.
8 Determining the installation point • 3 dimensional bend • Shut-off valve S402 • T-piece • Filter or similar (unknown objects) 15
9 Installing the sensor 9 Installing the sensor Before installing the sensor, please make sure that all components listed below are included in your package. Qty Description Item no. 1 Sensor S695 4105 1 Copper gasket sealing ring NA 1 Alignment key NA 1 Depending on orders: M12 5-pore plug or M12 cable 5-pore plug: C219 0059 Cable including a 5-pore plug: A553 0104/A553 0105 Cable including a 6-pore plug: A553 0106 1 Instruction manual NA 1 Calibration certificate NA 9.
9 Installing the sensor 9.2 Installation The following steps explain the procedure of an appropriate installation. 9.2.1 Calculating the insertion depth The sensor probe tip must be placed in the center of the pipe. For this the probe shaft has a scale. To determine the right position please calculate the insertion depth as described below. Center installation is the default and recommended installation type.
9 Installing the sensor For bigger pipe diameters (>200 mm) the sensor can be installed with only a 100 mm insertion depth as alternative method. This allows one sensor to be used for all pipe sizes. Note: This 100 mm installation depth method requires a setting through the Android app or the service software.
9 Installing the sensor 9.2.2 Installing the sensor Observe the flow direction indicated on the top of the meter or on the shaft. Make sure it matches the flow direction of the compressed air or gas. 1. Close the ball valve 2. Rotate the connection head to make its connection thread cover the sensor probe tip completely. 3. Underlay the copper gasket sealing ring at the thread of the connector head. 4. Tighten the connection head to the ball valve.
9 Installing the sensor 8. Using one edge of the locking nut as a reference, draw a line that is aligned with this edge on the hexagonal surface of the connection head with a pen. 9. Check again to make sure that the actual flow direction is aligned with the arrows on the sensor top. The angle deviation should not be larger than ±2°, as shown below. 10. Check again and make sure that the installation depth is correct because sometimes the shaft is moved from its original position by the compressed air.
9 Installing the sensor 9.2.3 Removing the sensor 1. Hold the flow sensor. 2. Release the locking nut at the connection thread. 3. Pull out the shaft slowly until the value “10” can be read at the scale. 4. Close the ball valve. 5. Release the connection thread and unscrew the flow sensor. 9.3 Electrical connection The S402 flow sensor provides an M12 connector, which has 5-pin or 6pin depending on the output signal type you choose.
9 Installing the sensor Pin assignment of the 6-pin M12 connector Output type Pin 1 Pin 2 Pin 3 Pin 4 4 ... 20 mA plus Pulse (P/N: A1415) Wire colour -I -VB +VB blue white red Pin 5 Pin 6 SW +I SW yellow green black Legend: GND: Ground for Modbus SW: Isolated pulse output -VB: Negative supply voltage D+: Modbus data + +VB: Positive supply voltage D-: Modbus data - +I: Positive 4 ... 20 mA signal MB: MBus data -I: Negative 4 ...
10 Sensor signal outputs 10 Sensor signal outputs 10.1 Analog output The sensor has an analog output range of 4 ... 20 mA. This output can be scaled to match a desired measuring range. Standard scaling is from 0 to max flow. The corresponding flow in different pipe sizes can be found in the Appendix section. For other ranges, please contact the manufacturer. 10.2 Pulse output The sensor will send out one pulse per consumption unit.
10 Sensor signal outputs In case that the flow rate is too high and the S402 cannot output pulses with the default settings (one pulse per one consumption unit), use our mobile service app S4C-FS to set the pulse output to 1 pulse per 10 consumption units or 1 pulse per 100 consumption units. For example, when configured with 1 pulse per 10 m3, the sensor will send one pulse each 10 m3. Example (1 pulse per 10 m3): Volumetric flow Volumetric flow Pulse length Max.
10 Sensor signal outputs 10.2.1 Pulse connection diagram The pulse connections for 6-pin M12 connector are shown below. The pulse connection for 5-pin M12 connector is shown below.
10 Sensor signal outputs 10.3 Modbus output The default Modbus communication settings are shown as below. You can change the default values using Modbus, service software or the S4C-FS service app. Mode : RTU Baud rate : 19200 Device address : Last two digits of serial number Framing / parity / stop bit : 8, N, 1 Response time : 1 second Response delay : 0 ms Inter-frame spacing : 7 char 10.3.1 Modbus settings registers Modbus Reg No.
10 Sensor signal outputs 10.3.2 Values registers Modbus Register Reg. Address No.
11 Service App S4C-FS 11 Service App S4C-FS S4C-FS is an Android-based mobile app that enables you to remotely view online measurements and change settings for SUTO flow meters. Download S4C-FS from the Google Play Store or SUTO website. To change settings, you need to scan the QR code on the calibration certificate using the app. This ensures that only authorized users can access the sensor settings.
12 Calibration 12 Calibration The sensor is calibrated ex work. The exact calibration date is printed on the certificate which is supplied together with the sensor. The accuracy of the sensor is regulated by the onsite conditions, and parameters like oil, high humidity or other impurities can affect the calibration and furthermore the accuracy. However we recommend to This ensures that only authorized users can access the sensor settings. calibrate the instrument at least once per year.
15 Appendix A - Modbus communication example 15 Appendix A - Modbus communication example 03 (0x03) Read holding register Request Response Slave address 1 byte Slave address 1 byte Function code 1 byte Function code 1 byte Starting address 1 byte Hi Byte count 1 byte Starting address 1 byte Lo Register Hi 1 byte No. of points Hi 1 byte Register Lo 1 byte No.
15 Appendix A - Modbus communication example 16 (0x10) Write multiple registers Request Response Slave address 1 byte Slave address 1 byte Function code 1 byte Function code 1 byte Starting address 1 byte Hi Starting address 1 byte Hi Starting address 1 byte Lo Starting address 1 byte Lo No. of registers Hi 1 byte No. of registers Hi 1 byte No. of registers Lo 1 byte No.
This device complies with part 15 of the FCC Rules. Operation is subject to the condition that this device does not cause harmful interference (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
SUTO iTEC GmbH Grißheimer Weg 21 D-79423 Heitersheim Germany Tel: +49 (0) 7634 50488 00 Fax: +49 (0) 7634 504 88 19 Email: sales@suto-itec.com Website: http://www.suto-itec.com All rights reserved © S402 SUTO iTEC (ASIA) Co., Ltd. Room 10, 6/F, Block B, Cambridge Plaza 188 San Wan Road, Sheung Shui, N.T. Hong Kong Tel: +852 2328 9782 Fax: +852 2671 3863 Email: sales@suto-itec.asia Website: http://www.suto-itec.
