美国PFS流量计，美国PFS流量计美国PFS公司目前主要产品（文丘里流量计、楔式流量计和高压节流装置）如下：（1）HVT-CI或HVT-FVHalmiVenturi文丘里流量计，HVT-PI或HVT-FIHalmiInsertionTypeVenturi插入式文丘里流量计，Size：3”to96”，PresureRating：ANSIClass150ibstoClass2500ibs，Accuracy：BenchCalibrated试验台标定&plu***n;0.5％，FlowCalibrated实际流量标定&plu***n;0.25％。（2）HVT-FV-MiniVenturifor***alllinesizeapplication小流量用微小型文丘里流量计。Size：1”orless,pressurerating:ANSIClass150ibstoClass2500ibs,Accuracy：BenchCalibrated试验台标定&plu***n;0.5％，FlowCalibrated实际流量标定&plu***n;0.25％。（3）HVT-BVorHVT-BIHalmiVenturitypeprimaryflowelementsforBi-directionalflowmeasurement.双向文丘里流量计，Size：3”to96”pressurerating:ANSIClass150ibstoClass2500ibs,Accuracy：BenchCalibrated试验台标定&plu***n;0.5％，FlowCalibrated实际流量标定&plu***n;0.25％。（4）PFS-WMwedgetypeprimaryflowmeasurementelementsforhighviscosityfluidsapplication用于高黏度流体流量测量的楔式流量计Size:1”to24”,pressurerating:ANSIClass150ibstoClass2500ibs,Accuracy：BenchCalibrated试验台标定&plu***n;2％，FlowCalibrated实际流量标定&plu***n;0.5％，Repeatability&plu***n;0.2％（5）Orificeplates,flanges,andholdingblocksassembledforthrottling,Differentialpressureflowmeasuringelements.孔板流量计组件，Size:2”to16”，Pressurerating:ANSIClass300#toClass2500#。)