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-FV Halmi Venturi 文丘里流量计,HVT-PI或HVT-FI Halmi Insertion Type Venturi插入式文丘里流量计, Size:3” to 96”, Presure Rating:ANSI Class 150ibs to Class 2500ibs, Accuracy: Bench Calibrated试验台标定±0.5%, Flow Calibrated实际流量标定±0.25%。 (2) HVT-FV-Mini Venturi for small line size application小流量用微小型文丘里流量计。 Size:1” or less, pressure rating: ANSI Class 150ibs to Class 2500ibs, Accuracy: Bench Calibrated试验台标定±0.5%, Flow Calibrated实际流量标定±0.25%。 (3) HVT-BV or HVT-BI Halmi Venturi type primary flow elements for Bi-directional flow measurement. 双向文丘里流量计, Size:3” to 96” pressure rating: ANSI Class 150ibs to Class 2500ibs, Accuracy: Bench Calibrated试验 台标定±0.5%, Flow Calibrated实际流量标定±0.25%。 (4) PFS-WM wedge type primary flow measurement elements for high viscosity fluids application 用于高黏度流体流量测量的楔式流量计 Size: 1” to 24”, pressure rating: ANSI Class 150ibs to Class 2500ibs, Accuracy: Bench Calibrated试验台标定±2%, Flow Calibrated实际流量标定±0.5%, Repeat ability ±0.2% (5) Orifice plates, flanges, and holding blocks assembled for throttling, Differential pressure flow measuring elements. 孔板流量计组件, Size: 2” to 16”, Pressure rating: ANSI Class 300# to Class 2500# 。