Klay Instruments is an ISO 9001 certified company who develops and manufactures a wide range of electronic Pressure and Level transmitters, “Intelligent” transmitters with HART® protocol or Profibus PA and Pressure and Level switches. All instruments are designed and manufactured in our factory in Dwingeloo, The Netherlands. Klay Instruments has a world wide service and sales distribution network. Our pressure and level transmitters are only available with stainless steel electronic housing and are completely temperature compensated.