Keller America Inc

Keller America, the North American division of KELLER Pressure AG (founded 1974 in Winterthur, Switzerland), manufactures piezoresistive pressure measurement instrumentation for industrial and environmental applications. The parent company produces over 1.3 million pressure measuring cells annually at its ISO 9001-certified Swiss facility and serves sectors including water and environment, oil and gas, aviation, HVAC, and chemical processing. For the water and wastewater market, Keller offers a focused portfolio of submersible level transmitters and pressure instruments. The LevelRat is their flagship wastewater product, featuring a flush PTFE-coated Kynar diaphragm designed to resist fouling in sewage lift stations and aggressive wastewater, with all-titanium or 316L stainless steel construction and built-in lightning protection rated for hazardous locations. The Acculevel provides high-accuracy submersible level measurement at 0.1% FS static accuracy with NSF/ANSI 61 and 372 certification for drinking water applications, while the Acculevel SDI adds RS485 MODBUS and SDI-12 protocol compatibility for remote monitoring. The Levelgage offers a general-purpose submersible transmitter at 0.25% FS accuracy, and the Econolevel serves OEM applications with full-scale ranges from 11.5 to 231 feet of water gauge. Keller also supplies the Econoline general-purpose pressure transmitter and the recently introduced 26KyX level probe with a Kynar diaphragm for aggressive chemical environments. All products are manufactured in Switzerland and supported through the US subsidiary.