chemilocha
Chemical
can we use SS float level switch in HCL tank ( 32-35% conc)?
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SS float level switch
- Thread starter chemilocha
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chemilocha
No. 304 and 316 SS has minimal resistance to HCL and will suffer severe chloride corrosion. Some of the duplex stainless steels are somewhat resistant but still not a good choice. Why not try something like a HDPE float?
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
No. 304 and 316 SS has minimal resistance to HCL and will suffer severe chloride corrosion. Some of the duplex stainless steels are somewhat resistant but still not a good choice. Why not try something like a HDPE float?
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
georgeverghese
Chemical
If the required level range can tolerate the % error in predicted density, why not use a remote sealed dp cell ? And if the vapor space is always close to or at atmospheric, further simplify this to a remote sealed PT to infer level?
georgeverghese
Chemical
A remote sealed PT or dp cell can be a cheaper alternative to avoid exotic materials that you would have to sue for a float switch..
georgeverghese
Probably the issue will be that they might be controlling directly with the float switch. It might be operating directly into a pump circuit, or a level alarm or whatever or it may be providing a digital input to a PLC.
If you change to a Pressure transducer this will be an analogue instrument (4-20ma or 0-10v or similar). This could require a change of wiring but might be able to be programmed into a PLC to stop/start/alarm etc at a particular tank level(ma or voltage level). However if it is working directly in a motor or alarm circuit there will need to be some sort of analogue to digital convertor to change an analogue to a switch function.
However following along your line though you can get units not unlike a PT which are in fact an adjustable pressure switch which may well do the job required. But many operators prefer a "float" switch because they can clearly see what is happening.
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
Probably the issue will be that they might be controlling directly with the float switch. It might be operating directly into a pump circuit, or a level alarm or whatever or it may be providing a digital input to a PLC.
If you change to a Pressure transducer this will be an analogue instrument (4-20ma or 0-10v or similar). This could require a change of wiring but might be able to be programmed into a PLC to stop/start/alarm etc at a particular tank level(ma or voltage level). However if it is working directly in a motor or alarm circuit there will need to be some sort of analogue to digital convertor to change an analogue to a switch function.
However following along your line though you can get units not unlike a PT which are in fact an adjustable pressure switch which may well do the job required. But many operators prefer a "float" switch because they can clearly see what is happening.
Regards
Ashtree
"Any water can be made potable if you filter it through enough money"
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