model lt irrometer ® the model lt irrometer was designed to ... and accuracy in this narrow range the model lt because of its sensitivity and ... 50 or more at tensions in the 8-15 cb kpa range gravimetric sampling ... water measurement and mathematical models of soil water status are very ... threaded tip lt gauge automation the model lt is also available in a switching ... configuration similar to the irrometer model ra which has been used to control ... on a soil moisture reading since 1970 a model lta low tension automatic has an ... note effective operating range for model lta is 5-20 kpa do not set switch ...