Winson ZW-TDS102 TDS Water Quality Detection Module User Manual

: June 10, 2024
: WINSON

Table of Contents

Winson ZW-TDS102 TDS Water Quality Detection Module
Product Information
Product Characteristics
Product Main Application
Product Technical Parameters
Product Usage Instructions
Statement
ZW-TDS102 TDS Water Quality Detection Module
Communication Protocol
- Command example
Precautions
Contact
References
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Winson ZW-TDS102 TDS Water Quality Detection Module

Product Information

The TDS Water Quality detection module (Model ZW-TDS102) is a universal module manufactured by Zhengzhou Winsen Electronic Technology Co., Ltd. It uses digital signal output to detect the content of total dissolved solids (TDS) in water with good selectivity and stability. The module has low power consumption, high precision, linear output, convenient calibration, and good stability.

Product Characteristics

Low power consumption
High precision
Linear output
Convenient calibration
Good stability

Product Main Application

The TDS Water Quality detection module is widely used in the detection of laboratory research, water purifiers, lake water, and other fields.

Product Technical Parameters

Working Voltage: 12V(DC)
Consumption Detecting temperature range Output
Response time Temperature range

Product Usage Instructions

To use the TDS Water Quality detection module, follow the below steps:

Connect the module to a 12V DC power supply.
Dip the module into the water sample to be tested.
The module will output a digital signal indicating the content of total dissolved solids (TDS) in the water sample.
If necessary, calibrate the module using the convenient calibration feature.
The module can be used in various applications such as laboratory research, water purifiers, and lake water testing.

Statement

This manual copyright belongs to Zhengzhou Winsen Electronics Technology Co., LTD. Without the written permission, any part of this manual shall not be copied, translated, stored in database or retrieval system, also can’t spread through electronic, copying, record ways. Thanks for purchasing our product. In order to let customers use it better and reduce the faults caused by misuse, please read the manual carefully and operate it correctly in accordance with the instructions. If users disobey the terms or remove, disassemble, change the components inside of the sensor, we shall not be responsible for the loss.

The specific such as color, appearance, sizes &etc, please in kind prevail. We are devoting ourselves to products development and technical innovation, so we reserve the right to improve the products without notice. Please confirm it is the valid version before using this manual. At the same time, users’ comments on optimized using way are welcome. Please keep the manual properly, in order to get help if you have questions during the usage in the future.

ZW-TDS102 TDS Water Quality Detection Module

Profile

ZW-TDS102 TDS water quality detection module is a universal module that uses digital signal output, which can be used to detect the content of total dissolved solids (TDS) in water, and have good selectivity and stability.

Characteristics

Low power, high precision, linear output, convenient calibration and good stability.

Main application

It is widely used in the detection of laboratory research, water purifier, lake water and other fields.

Technical parameter

Working Voltage	12V(DC)	Working current	<5mA
Consumption	<25mW	Measuring range	0-2000μs/cm

Detecting

temperature range

Pin definition

PIN1	VCC
PIN2	GND
PIN3	A
PIN4	B
PIN5	TDS sensor +
PIN6	TDS sensor –
PIN7	Temperature +
PIN8	Temperature –

Communication Protocol

Communication settings

Baud rate

| ****

9600

---|---
Data byte| 8
Stop byte| 1
Check byte| none

Command

Read Register: 03command:

Slave address| Function code| Register start address high byte| Register start address low byte| Register data high byte| Register data low byte| Check code low byte| Check code high byte
---|---|---|---|---|---|---|---
1 byte| 03H| 1byte| 1byte| 1byte| 1byte| 1byte| 1byte

Correct Response

Slave address| Function code| Data byte|

Data

| Check code low byte|

Check code high byte

---|---|---|---|---|---

1 byte

|

03H

|

1 byte

|

N_L*2Data byte

|

1 byte

|

1 byte

WriteSingleRegister: 06command

Slave address| Function code| Register address high byte| Register address low byte| Register value high byte| Register value low byte| Check code low byte| Check code high byte
---|---|---|---|---|---|---|---
1 byte| 06H| 1byte| 1byte| 1byte| 1byte| 1byte| 1byte

Correct Response

（Whenusing theFE broadcast address to write，the slave address returns FE address）

Slave address| Function code| Register address high byte| Register address low byte| Register value high byte| Register value low byte| Check code low byte| Check code high byte
---|---|---|---|---|---|---|---
1byte| 06H| 1byte| 1byte| 1byte| 1byte| 1byte| 1byte

Data Address Table

Slave address	Variable name	Variable description	Note
0x0000	Temperature	0-100	Only Support 03command
0x0001	TDS	0-2000	Only Support 03command
0x0002	Address	0-247	Support 03\06command

Command example

Read 0#Equipment temperature： （factory default 0#）
Host computer sends： 00 03 00 00 00 01 85 DB
Slave Reply： 00 03 02 00 B9 44 36
Temperature calculation: =00*256+0xB9=185/10=18.5℃
Read 0#Equipment TDS Value： （factory default 0#）Host computer sends：00 03 00 01 00 01 D4 1B
Slave Reply： 00 03 02 01 D8 84 4E
TDS calculation=0x01*256+0xD8=472

Read 0#Equipment temperature，TDS and equipment address

Host computer sends： 00 03 00 00 00 03 04 1A
Slave Reply： 00 03 06 00 AF 02 27 00 00 49 4E

Modify the equipment address 1#（Broadcast address FE，Only 1 device is allowed, and there is no repetition address on the bus.）

Host computer sends： FE 06 00 02 00 01 FD C5
Slave Reply： FE 06 00 02 00 01 FD C5

Modify the equipment address 2#

Host computer sends： FE 06 00 02 00 02 BD C4
Slave Reply： FE 06 00 02 00 02 BD C4

Precautions

The module should avoid contact with organic solvents, coatings, agents and oils.
Do not apply modules to systems involving personal safety.
Do not use the module to be installed in a strong air convection environment.
The module cannot be subjected to excessive impact or vibration. If you cannot generate sway during use, the value returned will not be accurate.
Please power the module in strict accordance with the power supply voltage of the module, and the voltage exceeds 12V will cause the module to be irreversible damage.
Do not place the module in a strong air convection environment.
Do not place the module for a long time in high concentration organic gases.