measuring range(range defined by two values of the measurand, or quantity to be supplied, within which the limits of uncertainty of the measuring instrument are specified NOTE – An instrument can have several measuring ranges. Found on electropedia.orgAlexander Demidov)
measurement range(The range of values for a quantity for which the error of a measuring instrument is intended to lie within specified limits. Within this range, the measurement has a well-defined accuracy or applicability. Outside the range, it does not. It is distinct from the operating range, within which the instrument will provide a measurement but the error is not well-defined. SLB Oilfield Glossary Alexander Demidov)