| Applies when | hydrofluoric acid, hf acid, hf pickling, hf etching |
|---|---|
| Avoid | general purpose pH sensor, standard pH electrode (Instrument) |
| Recommend instead | Icon Process Controls P14 Series pH Sensor Transmitters (P14H or P14F) (Instrument) |
| Rationale | Icon Process Controls' ProCon P14 Series pH sensor line splits HF acid service into two distinct models by concentration: P14H for HF Acid under 4000 ppm (~0.4%) and P14F for HF Acid over 4000 ppm - a real, quantified threshold, not just a generic 'chemical resistant' pH sensor claim. This is an instrumentation-selection finding distinct from the existing hydrofluoric-acid-safe-tank-required rule (which covers tank/valve material selection) - together they cover both the containment/handling equipment and the process-monitoring instrumentation needed for a complete HF acid system quote. Both P14 models share PP polypropylene shell, PTFE Teflon NEXUS liquid junction, and double salt bridge reference construction; the difference between the two models is the internal reference/junction tuning for the specific concentration range, not the wetted material. |
| Confidence | single-vendor |
| Source | data/vendor-sources/icon-process-controls-analytical.md |
This is a general engineering rule derived from real field/case-study evidence, not a substitute for a project-specific specification review — confirm against your exact process conditions before ordering equipment.
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Source: Liberty Chemical Equipment & Supply, Inc. (LibertyCES) — engineering data compiled from real vendor and field-verified sources. For a free spec review, call James Riggins at (559) 395-5500 or email james@libertyces.com / sales@libertyces.com. Website: libertyces.com.