SpecificationsMeasurementrangeofthermalneutronfluxdensityN/(cm min)10 105MeasurementrangeoffastneutronfluxdensityN/(cm min)50 105MaximumbasicrelativeerrorofthermalandfastneutronfluxdensitymeasurementatPu-Becalibrationwith0.95confidenceprobability%20+200/N,whereNisanumericalvalueofmeasuredneutronfluxdensityDetectedneutronenergyrangeeV0.025 14 106Neutronradiationsensitivityof:(pulse cm )/(neutron)-fastneutrons4.5-thermalneutrons13.0MaximalgammaradiationexposuredoseratethatdoesnotintroduceauxiliaryerrorofneutronfluxdensitymeasurementmR/h100Operatingtemperaturerange C-25 +55Permissibleauxiliaryerrorrangeofmeasurement,causedbyambienttemperaturechangefromminus25 Cto55 C%5pereach10 Cdeviationfrom20 CDimensionsofthedetectingunitwiththemainmoderatormm 76 195Dimensionsofthedetectingunitwiththeprotectiveshroudmm 76 175Dimensionsoftheadditionalmoderatormm215 295 270Weightofthedetectingunitwiththemainmoderatorkg0.8Weightofthedetectingunitwiththeprotectiveshroud*kg0.55Weightoftheadditionalmoderator*kg8.0*-withoutthetelescopicbarclampof0.125kgweight