13 Positive Displacement Flowmeters

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Information about 13 Positive Displacement Flowmeters
Education

Published on January 9, 2008

Author: Calvin1

Source: authorstream.com

Series PDM Flowmeter:  Series PDM Flowmeter Series PDM Flowmeter:  Series PDM Flowmeter Overview Series PDM Flowmeters provide high levels of accuracy and repeatability for a wide range of liquids from low viscosity Solvents and chemicals to viscous oils, greases and food bases. Low pressure drop allows for economical pump selection or gravity flow applications. Series PDM Flowmeter:  Series PDM Flowmeter Types of Positive Displacement Meters Nutating Disc Rotating Valve Oscillating Piston Oval Gear Rotating Lobe Birotor Rotating Impeller Series PDM Flowmeter:  Series PDM Flowmeter Principle of Operation The Series PDM Flowmeter uses the oscillating piston principle where the passage of liquid causes a piston to oscillate smoothly in a circular motion within the measuring chamber. Each piston cycle passes a known volume of liquid from the inlet to the outlet port, magnets in the piston activate the reed switch and the solid state sensor to provide pulse outputs for remote flow, measurement and process control. Series PDM Flowmeter:  Series PDM Flowmeter Principle of Operation The diagram below shows the transition of fluid from the Inlet Port through the measuring chamber and then out the Outlet Port. Series PDM Flowmeter:  Series PDM Flowmeter Features 316L Stainless steel, Aluminium or UPVC construction Accuracy ±0.5% rate Has no stagnate chambers Measures High and Low viscosity liquids to 1,000,000cp No requirement for flow conditioning High Pressure models to 350 Bar Insensitive to mounting orientation Series PDM Flowmeter:  Series PDM Flowmeter Benefits Up to 70% cost saving for an installation requiring a stainless steel flowmeter Has only one moving part giving extended trouble free working life Installation flexibility in vertical or horizontal pipes, no need for straight pipe runs or conditioned flow Series PDM Flowmeter:  Series PDM Flowmeter Benefits No modifications are needed when measuring high viscosity liquids Can be cleaned in place using chemicals or controlled steam pressure/temperature Extremely compact and comparatively light weight Limited spare parts needed to support the product Series PDM Flowmeter:  Series PDM Flowmeter Outputs Reed Switch Output - Provides a voltage free contact closure. The reed switch is classed as a "simple device" and can be used in hazardous areas when connected via an approved intrinsically safe barrier. Square Wave Output - An open collector pulse output produced by a solid state Hall effect device. This 3-wire device requires 5-24 vdc excitation voltage and produces a high resolution square wave output. Series PDM Flowmeter:  Series PDM Flowmeter Aluminium Models Sizes 15 mm (1/2"), 20 mm (3/4"), 25 mm (1"), 40 mm (11/2"), 50 mm (2") Material Aluminium body and manifold, Peek piston and bearing Flow Ranges 10-500 lph (2.6-130 usgph) 100-1500 lph (26-396 usgph) 120-3000 lph (32-790 usgph) 250-8000 lph (56-2115 usgph) 700-20,000 lph (185-5280 usgph) Series PDM Flowmeter:  Series PDM Flowmeter Aluminium Models Process Connections Threaded BSPP/NPT female, Flanged ANSI/DIN standards Pressure Rating 20-80 Bar (standard) Temperature Rating -40 to 150°C Series PDM Flowmeter:  Series PDM Flowmeter Aluminium Models Outputs Reed switch, NPN Open Collector Options Exd. and I.S. operation Integral or remote high speed preset batch controller Integral or remote battery power flow rate totaliser with scaled output, analog and flow alarm outputs Series PDM Flowmeter:  Series PDM Flowmeter Sizes 15 mm (1/2"), 20 mm (3/4"), 25 mm (1"), 40 mm (11/2"), 50 mm (2") Material 316L SS body and manifold, peek piston and bearing Flow Ranges 10-500 lph (2.6-130 usgph) 100-1500 lph (26-396 usgph) 120-3000 lph (32-790 usgph) 250-8000 lph (56-2115 usgph) 700-20,000 lph (185-5280 usgph) Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Process Connections Threaded BSPP/NPT female, Flanged ANSI/DIN standards Pressure Rating 38-100 Bar (standard) Temperature Rating -4 to 150°C Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Outputs Reed switch, NPN Open Collector Options Exd. and I.S. operation Integral or remote high speed preset batch controller Integral or remote battery power flow rate totaliser with scaled output, analog and flow alarm outputs Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Sizes 15 mm (1/2"), 20 mm (3/4"), 25 mm (1"), 40 mm (11/2") Material 316L SS body and manifold, peek piston and bearing Flow Ranges 10-500 lph (2.6-130 usgph) 100-1500 lph (26-396 usgph) 120-3000 lph (32-790 usgph) 250-8000 lph (56-2115 usgph) High Pressure Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Process Connections Threaded BSPP/NPT female, Flanged ANSI/DIN standards Pressure Rating Up to 350 Bar Max. Temperature Rating -4 to 120°C High Pressure Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Outputs Reed switch, NPN Open Collector Options Exd. and I.S. operation Integral or remote high speed preset batch controller Integral or remote battery power flow rate totaliser with scaled output, analog and flow alarm outputs High Pressure Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Sizes 15 mm (1/2"), 20 mm (3/4"), 25 mm (1"), 40 mm (11/2"), 50 mm (2") Material 316L SS body and manifold, peek piston and bearing Flow Ranges 10-500 lph (2.6-130 usgph) 100-1500 lph (26-396 usgph) 120-3000 lph (32-790 usgph) 250-8000 lph (56-2115 usgph) 700-20,000 lph (185-5280 usgph) Hygienic Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Process Connections Threaded BSPP/NPT female, Tri-clover hygienic BS/DIN standards Pressure Rating 50-100 Bar standard Temperature Rating -4 to 150°C Hygienic Stainless Steel Models Series PDM Flowmeter:  Series PDM Flowmeter Hygienic Stainless Steel Models Outputs Reed switch, NPN Open Collector Options Exd. and I.S. operation Integral or remote high speed preset batch controller Integral or remote battery power flow rate totaliser with scaled output, analog and flow alarm outputs Series PDM Flowmeter:  Series PDM Flowmeter Sizes 25 mm (1") Material UPVC body and manifold, carbon filled Teflon piston and bearing Flow Ranges 120-3000 lph (32-790 usgph) PVC Models Series PDM Flowmeter:  Series PDM Flowmeter PVC Models Process Connections Threaded BSPP/NPT female Pressure Rating 4 Bar Temperature Rating 40°C Outputs Reed switch, NPN Open Collector Options I.S. operation Series PDM Flowmeter:  Series PDM Flowmeter Applications Chemical Manufacturing or handling, specifically solvents or acids Pharmaceutical, specifically medical and cosmetic liquids Pet Food manufacturing, stock feed and poultry plants injecting food supplements and colourings Series PDM Flowmeter:  Series PDM Flowmeter Applications Container filling machines and bottling equipment manufacturers Industries requiring “in-line cleaning”, confectionery, food and beverage Petroleum refineries, petroleum distribution, lube oil and grease dispensing Hydraulics and hydraulic driven injection systems Paper manufacturing and related printing ink applications Series PDM Flowmeter:  Series PDM Flowmeter Competition McNaught M Series 0.5% Accuracy Sizes from 8 mm (1/4") to 50 mm (2") Flow Ranges from 30 to 300 LPM (below 5CPS), 15 to 350 LPM (above 5CPS) Maximum viscosity 1000 Centipoise Maximum Pressure 55 Bar (SS version) Series PDM Flowmeter:  Series PDM Flowmeter Competition Badger VAF Liquid Controls Aquametro Oval Series PDM Flowmeter:  Series PDM Flowmeter Summary 0.5% Accuracy Viscous Fluids High Pressure options Explosion Proof/I.S. available Rate Totaliser can be integral to unit Sizes from 15 mm to 50 mm Broad Application across many markets

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