Are there any recommended domestic PH/ORP online monitoring devices?
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The Hangzhou Luheng units in use on site are terrible – their readings are inaccurate, the 4–20mA output is also incorrect, and they cannot be calibrated. Does anyone have any recommended domestic watches? Thank you!
With E plus H, you get what you pay for – quality corresponds to price
Under normal operating conditions, Hach and Foxboro are both good. The latter offers better value for money. I’ve never used domestic ones.
Hach or ABB, either works
For domestic options, Wuhan China Nuclear is a viable choice; it offers a good cost-performance ratio. I have supplied it to customers before, and it works well. I manufacture products from German brands WTW and Swiss brand Hamilton; Hamilton offers instruments that combine sensing functions with transmission capabilities. Send it to me by email if needed. :D
Those who need E+H technical documents can contact me!
Hello, I am very interested in E+H’s PH and ORP systems; our company also has a need for these. Please send me some relevant information. Email address: lzmxufeng@126.com
Zhejiang Zhongkong’s SPH3130
In China, there are not many companies that produce both transmitters and sensors. For transmitters, options in China include Taiwan’s Shangtai, Yantai Dongrun, Guiyang Xuetong, and other manufacturers – there are quite a few of them. These manufacturers generally choose to use imported or domestic electrodes depending on the actual operating conditions. The effectiveness of a pH meter depends on whether the electrodes and protective casing are properly selected; just because something is expensive does not mean it is necessarily good. For foreign transmitters, KNICK is recommended due to its excellent repeatability. For imported electrodes, METTLER HAMILTON is recommended for the pharmaceutical and food industries, while ABB Rosement is suitable for the chemical industry