Techfluid's Model PT-11, PT-12 and PTM models are low cost, easy to read, flow meters for gases & liquids, using clear plastic tubes. Applications include monitoring & control of processes for water & waste water treatment, chemical, petrochemical, paper, pharmaceutical, cosmetics, refrigeration, air conditioning, refining, osmosis & gas processes. Scaled directly in l/h, m3/h, %, etc. Pressures up to 15 bar.