Advertisement
USER GUIDE FOR TURBIDITY
SENSOR WITH MODBUS RTU
OUTPUT MBRTU-TBD
This document is applied for the following products
1. Introduction
MBRTU-TBD is an advanced digital turbidity sensor for water quality monitoring, adopt the principle of scattered light,
the design method of using infrared LED light source and optical fiber conduction light path. The filter design is added
inside, which has strong anti-interference ability. Built in temperature sensor, automatic temperature compensation,
suitable for online long-term monitoring of the environment.
2. Specification
Features
1. Digital sensor, direct output RS-485 digital signal, support Modbus / RTU
2. Principle of 90° Angle Scattering Light, the built-in temperature can be compensated automatically;
3. Optical fiber structure, strong resistance to external light interference
4. Infrared LED light source, add filter design, anti light interference, good stability
5. The surface shall be treated with anti-corrosion and passivation
6. Low power consumption and anti-interference design of internal circuit
Technical Data
Item
Output
Measuring method
Specifications
RS-485,MODBUS/RTU
90° scattered light method
JUL-2021
Advertisement
Table of Contents
Related Manuals for daviteq MBRTU-TBD
Summary of Contents for daviteq MBRTU-TBD
- Page 1 This document is applied for the following products 1. Introduction MBRTU-TBD is an advanced digital turbidity sensor for water quality monitoring, adopt the principle of scattered light, the design method of using infrared LED light source and optical fiber conduction light path. The filter design is added inside, which has strong anti-interference ability.
-
Page 2: Maintenance And Precautions
Range 0 ~ 1000NTU or 0 ~ 100NTU ±5% indication value or ±3NTU, choose the greater (0 ~ 1000NTU) Accuracy ± 3% indication or ± 2 NTU, choose is greater (0-100 NTU) ±0.5℃ Resolution 0.1NTU, 0.1℃ Working environment 0 ~ 50℃, <0.6MPa Calibration method Two-point calibration Response time... -
Page 3: Modbus Rtu Protocol
every 30 days; Avoid the use of hard objects to cause the damage of the light guide part of the measuring probe during cleaning; Please wipe with a soft damp cloth. It is recommended to clean the outer surface of the sensor with water flow. If there is still debris residue, please wipe it with a wet soft cloth. - Page 4 ℃ value x10 (for example: the temperature of 25.6℃ 0x0100 Temperature value 1 (2 bytes) unsigned short is displayed as 256, the default is 1 decimal.) NTU value x10 (for example, the turbidity value of 15.1ntu is 0x0101 Turbidity value 1 (2 bytes) unsigned short displayed as 151,...
- Page 5 Host send: Register Number of Start register Start register number high registers low CRC low byte CRC high byte high byte low byte byte byte The first byte ADR: slave address code (= 001 ~ 254) Byte 2 03h: read register value function code Byte 3 and 4: start address of register to be read To read the FCC instrument, Bytes 5 and 6: number of registers to read...
-
Page 6: Command Example
The first byte ADR: slave address code (= 001 ~ 254) The second byte 86h: write register value error function code Byte 3 error code information code: 01 - function code error 03 - data error Byte 4 and 5: CRC check sum from byte 1 to 3 6.5 Command example 6.5.1 Default register a) Change slave address:... - Page 7 Returns hexadecimal unsigned integer data, temperature value = integer / 10, 1 bit decimal place is reserved. b) Turbidity measurement instruction: Address: 0x0101 (0x40102) Number of registers: 1 Function code: 0x03 Read sample values: 9.1 NTU Send command: 01 03 01 01 00 01 D4 36 Respond: 01 03 02 00 5B F9 BF Register returns hexadecimal unsigned integer data, turbidity value = integer / 10, 1 decimal place reserved.
- Page 8 Number of registers: 1 Function code: 0x06 Calibration example: calibration in air Send command: 01 06 10 01 00 00 DC CA Respond: 01 06 10 01 00 00 DC CA c) Turbidity slope calibration Address: 0x1003 (41004) Number of registers: 1 Function code: 0x06 Calibration example: calibration in 50NTU turbidity solution Send command: 01 06 10 03 01 F4 7D 1D...
- Page 9 Daviteq Technologies Inc No.11 Street 2G, Nam Hung Vuong Res., An Lac Ward, Binh Tan Dist., Ho Chi Minh City, Vietnam. Tel: +84-28-6268.2523/4 (ext.122) Email: info@daviteq.com | www.daviteq.com Revision #31 Created Tue, Jul 20, 2021 3:06 AM by Tien Nguyen...
Need help?
Do you have a question about the MBRTU-TBD and is the answer not in the manual?
Questions and answers