The GC51 and GC52 gauge and differential pressure transmitters from Ashcroft Inc., Stratford, CT, have a 2.65 in. dia. NEMA 4X/IP65 enclosure and SS wetted parts for wet or dry media. The GC51 is available with sensing ranges up to 0–7500 psig and the GC52 offers differential pressure ranges up to 400 in.H2O. Features include a built-in LED display, a 4–20 mA output, and the ability to add media isolators for sludge or caustic media installations. Applications include fluid level measurement in tanks and water towers and measuring differential pressures across membranes in water purification systems.