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15 Aug 2018, 10:49

Reference Design of RENESAS TDS Water Quality Tester

This is a reference design of RENESAS TDS Water Quality Tester. The RENESAS TDS Water Quality Tester was converted into DesignSpark PCB format. Download link of the project files and the article of RENESAS TDS Water Quality Tester could be found in the datasheet attachment.

Check water quality and detect hazardous substances in areas such as industrial wastewater, aquariums… etc. By dipping the front part of the device into the water and gently stir to dislodge any bubbles, TDS (Total Dissolved Solids) can be detected immediately. Measured value will display on the LCD monitor and saved by pressing the Hold button for convenient reading and recording. Temperature (°C/°F) can also be displayed by pressing the Temp button. The device includes an auto-off function, which will shut off automatically after 5 minutes without use.

Schematic of RENESAS TDS Water Quality Tester

 

 

 

PCB layout of RENESAS TDS Water Quality Tester

3D view of RENESAS TDS Water Quality Tester

BOM list of the board (Key Components):

RS Part Number

Manufacturer Part Number

Manufacturer

Description

(146-0344)

B57891M0103K000

EPCOS

NTC thermister (10K, ±10% )

(179-3640)

R5F1056AASP

Renesas Electronics

RL78/G11 MCU 20-LSSOP

(808-0098)

MC74HC164

ON Semiconductor

IC shift register 8-bit 14-TSSOP

(251-8115)

-

RS Pro

CONN Header 4x1, 2.54 mm

/

TC33X-2-202G

Bourns Inc

Trimmer 2 K, 0.1 W

Technical documents

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15 Aug 2018, 10:49