Seeed Sensecap S-EC-01 User Manual
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Seeed Sensecap S-EC-01 User Manual

Liquid ec & tds sensor
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User Guide
Liquid EC & TDS Sensor
User Manual
Version：v1.1
1 / 22
©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com

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  • Page 1 User Guide Liquid EC & TDS Sensor User Manual Version：v1.1 1 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 2: Table Of Contents

    7.4.4 Function Code 16 Protocol Example ............... 20 8 Software Configuration Utility ................22 8.1 Hardware Setup ........................22 8.2 Universal Modbus Comm Utility ..................22 8.3 SensorOneSet Configuration Utility ................. 22 2 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 3: Customer Support

    Check out our Forum where is the base of our Technical Support Team. We tend to share our technical support at our Forum where the whole community can access it, but you may also email us at sensecap@seeed.cc for technical help. 3 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 4: Introduction

    Operating Temperature -40~85° C Installation Electrode:1/2"NPT screw threads; Transmitter: Mounting hole Cable Length Power and Signal Cable:2 meters or Customize; Electrode Cable:5 meters Dimension Electrode:1/2"NPT screw threads; Transmitter:128*70*42mm 4 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 5: Wiring Diagrams

    Black (GND): Power Supply - Output Blue (O1): Analog Output RS485 Red (V+): Power Supply + Modbus Black (GND): Power Supply - Yellow (T+): RS485+/A/T+ White (T-): RS485-/B/T- 5 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 6 Please re-power up the sensor to make the settings effective. 6 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 7: Dimension And Ordering Infomation

    User Guide 4 Dimension and Ordering Infomation 4.1 Dimension Electrode(mm) Unit: mm 7 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 8: Installation , On Board Buttons And Calibration

    5.4 Restore Factory Settings Long press SW1-SET button for more than 3 seconds to restore the factory settings. You can restore the factory settings in following cases: 8 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 9: Calibration

    5.5.3 Perform EC calibration by SensorOneSet Configuration Utility SensorOneSet is a configuration utility to read/set sensor config for all of our serial communication sensor products. Please contact us if you need the English version. 9 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 10: Output Signal Conversion

    RS485 EC range: All EC=(REGISTER VALUE).When REGISTER Modbus-RTU VALUE=1568，then EC= 1568us/cm. NOTE: The unit of VOLTAGE is (V). NOTE: VWC is Volumetric Water Content, EC is Electrical Conductivity. 10 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 11: Rs485 Modbus Protocol

    0-20000 for Conductivity 0-20000us/cm SALINITY 0x0003 /3 UINT16 0-20000 for 0-20000mg/L 0x0004 /4 UINT16 0-20000 for 0-20000mg/L RESERVED 0x0005 /5 UINT16 RESERVED 0x0006 /6 UINT16 RESERVED 0x0007 /7 UINT16 11 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 12 SLAVEADDRESS 0x0200 /512 UINT16 3/6/16 0-255 1 or 30 BAUDRATE 0x0201 /513 UINT16 3/6/16 3:9600bps 0:1200bps 1:2400bps 2:4800bps 3:9600bps 4:19200bps 5:38400bps 12 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 13: Modbus Register Detail Descripton

    VALUE=((0xFF*256+0x05)-0xFFFF-0x01)/100 =(0xFF05-0xFFFF-0x01)/100=-2.51° C. EC ---Electrical Conductivity Data Range 0-20000 For 0-20000us/cm Default: N/A Power Down Save Note:Electrical Conductivity. Example:When REGISTER = 0x0702 (HEX format), then VALUE=(0x07*256+0x02)=1794us/cm SALINITY--- Salinity 13 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 14 Note: Temperature compensation ECTEMPCOFF---EC Temperature Compensation Coefficient Data Range 0-100 for 0.0%-10.0% Default: 20(2%) Power Down Save Note:EC Temperature Compensation Coefficient SALINITYCOFF---Salinity Coefficient Data Range 0-100 for 0.00-1.00 Default: 55(0.55) 14 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 15 Note: Please re-power on the sensor to take effective after set. PROTOCOL --- Serial Comm Protocol Data Range Default: 0 0:Modbus RTU 1:Modbus ASCii Power Down Save Note: Please re-power on the sensor to take effective after set. 15 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 16 Default: 0 Power Down Save Note: Please re-power on the sensor to take effective after set. Note: Sensor will output the data actively without any master request command. 16 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 17: Modbus Function Code

    Example: Read register 0x0200-0x0201,that is slave address and baudrate. Master Request:01 03 0200 0002 C5B3 Slave Addr. 1 byte 0x01 Function Code 1 byte 0x03 Starting Register 2 byte 0x0200 17 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 18: Function Code 4 Protocol Example

    Register Data Byte Count VV0,VV1 2 byte Register Value (High8bits first) VV2,VV3 2 byte Register Value (High8bits first) … … Register Value (High8bits first) CCCC 2 byte CRC CHECKSUM 18 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 19: Function Code 6 Protocol Example

    1 byte Slave Address,0-255 0x06 1 byte Function Code 6 RRRR 2 byte Register Addr (High8bits first) VVVV 2 byte Register Value (High8bits first) CCCC 2 byte CRC CHECKSUM 19 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 20: Function Code 16 Protocol Example

    1 byte Register Data Byte Count VVVV1 2 byte Register Value(High8bits first) VVVV2 2 byte Register Value(High8bits first) … … Register Value(High8bits first) CCCC 2 byte CRC CHECKSUM 20 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...
  • Page 21 Slave Addr. 0x10(HEX) 1 byte Function Code 0x10 0x0200 2 byte Starting Register Addr(High8bits first) 0x0002 2 byte Quantity of Register to write(High8bits first) 0x4070 2 byte CRC CHECKSUM 21 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

  • Page 22: Software Configuration Utility

    8.3 SensorOneSet Configuration Utility SensorOneSet is a configuration utility to read/set sensor config for all of our serial communication sensor products. Please contact us if you need the English version. 22 / 22 ©2008-2021 Seeed Technology Co., Ltd. All rights reserved. solution.seeedstudio.com...

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