week 8

For this week , i will explain or review  about one of the my sensor that use in my project.
The sensor use is Ph Sensor.

Figure Showed Liquid PH Value Detection Sensor Module Monitoring Control Kit

The PH electrode consist of a cylinder which enables direct connection to the BNC input terminal that is suitable for most pH meter and controller. It can give almost instantaneous reading which is accurate and reliable to be used.

Table  Liquid PH Value Detection Sensor Module Monitoring Control Kit specification

Measurement range	0 to 14 pH
Temperature range	0 to 60 °C
Zero-point	7 ± 0.5 pH
Alkali Error	0.2 pH
Theoretical Percentage Slope	≧ 98.5%
Internal Resistance	≦250 MΩ
Response Time	≦1 minute
Operating Temperature	0 to 60 °C

Table Sensor Module specification

Working current	5 to 10 mA
Detection of concentration range	0 to 14 pH
Detection of temperature range	0 to 80 °C
Response time	≤ 5 seconds
Stability time	≤ 60 seconds
Power consumption	≤ 0.5 Watt

There is the explanation about the pH sensor