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Online Ph Meter In Complex Fertilizer Industry

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#1 msaexcel@gmail.com


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Posted 28 October 2015 - 07:50 AM



we have online pH meter in our scrubbing section of complex fertilizer plant(DAP Plant). due to scaling & other impurities in phosphoric acid, pH meter shows wrong indication.

whether this problem is faced by everyone?

what are they doing to eliminate this problem?



#2 manojkaila


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Posted 31 October 2015 - 05:49 AM



I dont have the same fluid experience but normally for any Such critical PH meter there must be small skid. There must be manual sample point after the PH meter & we need to take sample at any regular interval to cross check the accuracy of reading.



#3 breizh


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Posted 31 October 2015 - 06:01 AM

Hi ,

Probably the vendor of this equipment should advice , definitely regular calibration and probe cleaning is a must . Can you provide a sketch or PID for us to understand better and provide effective support ( pipe diameter , flow rate , location of the probe ,etc) ?


Hope this helps


#4 P.K.Rao


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Posted 01 November 2015 - 11:55 AM

A filter is normally used for removing suspended and undissolved matter which may deposit on the electrodes leading to erroneous results. Please check the filter if there is any. Otherwise, use a filter. The meter (electrodes) has to be cleaned and calibrated with pH buffers periodically

#5 msaexcel@gmail.com


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Posted 17 December 2015 - 05:39 AM



thanks for all valuable suggestions.

after installation, i'll try to give feedback. 

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