Super User Orbital Piston PD - Multipulse Medium Capacity Positive Displacement Flowmeters Principle of Operation The Liquid enters into a precision machined chamber which contains an oscillating piston. The positioning of the piston divides the chamber into compartments containing an exact volume. The liquid pressure causes the piston to oscillate and rotate its centre hub. The movements of the hub are sensed through the meter wall by a series of magnets. Each revolution of the piston hub is equivalent to a fixed volume of liquid, which is indicated as flow by an indicator or totaliser. Close clearances between the piston and the chamber ensure minimum slippage of the liquid for highly accurate and repeatable measurement of each volume cycle. Features Flows: 0.2~330 litres/min ( 0.05~90 US gal/min ) Sizes: 15, 20, 25, 40 & 50mm ( 1 /2”, 3 /8”, 1”, 11 /2”& 2”) connections High accuracy & repeatability, direct reading flowmeter No requirement for flow conditioning ( straight pipe runs etc. ) Intrinsically safe & explosion proof models available Quadrature pulse output option & bi-directional flow Single moving parts Calibration – PD Flowmeters All Trimec Flow Products positive displacement (PD) flowmeters are flow tested and each is supplied with an individual calibration certificate. Calibration is traceable to the National Measurements Institute (NMI) Australia. PD flowmeters, due to their application on a wide range of liquid viscosities, are calibrated at one point, multipoint calibration for PD meters is available on request at an additional charge. Models & Specifications #twoj_fragment1-1 Meter Selection #twoj_fragment1-2 Options #twoj_fragment1-3 Applications #twoj_fragment1-4 Downloads #twoj_fragment1-5 Trimec Flow Products Orbital Piston Models & Specifications MP015 MP020 MP025 MP040 MP050 Pipe Size & Materials 15mm (1/2") Aluminium & Stainless 20mm (3/4") UPVC Only 25mm (1") Aluminium & Stainless 40mm (1 1/2") Aluminium & Stainless 50mm (2") Aluminium & Stainless Flow range (litres /min) 0.2~10 2~50 2~50 4~140 12~330 Flow range (USG / min) 0.05~2.7 0.5~13 0.5~13 1.1~37 3.2~90 Accuracy *+/- 1% o.r. +/- 0.5% of reading Imporved accuracy +0.2% or rate with optional NL correction Repeatability typically + 0.03% Temperature range -40°c ~ +200°c Maximum pressure (threaded meters) bar (PSI) Aluminium 30 (440) - 60 (870) 30 (440) 20 (300) 316L stainless 100 (1500) - 60 (870) 60 (870) 30 (440) High pressure stainless 350 (5150) - 150 (2175) 150 (2175) - UPVC (SAP Meters) 4 (60) Protection class IP66/67 (NEMA4X), optional Exd IIB T4 / T6 or I.S Recommended filtering 150 microns (100 mesh) minimum Electrical - for pulse meters (see also option outputs) Outut pulse resolution pulses / litre Reed switch 200 (760) 20 (76) 20 (76) 7.3 (28) 2.5 (9.5) Hall effect 400 (1250) 100 (380) 100 (380) 44 (167) 20 (76) Reed switch output ** 30Vdc x 200mA max. Hall effect output (NPN) 3 wire open collector, 5~24Vdc, 20mA max. * Within nominal spans of MP015 (0.2~1.7, 1.7~5 & 5~10 litres/min) Orbital Piston Meter Selection Selecting the right meter for your application. Meters are selected based on flow range, pressure, temperature, material compatibility and functionality. Aluminium Multipulse meters ideal for petroleum products including oils and grease, fuels and fuel oils. Stainless steel meters suited for chemicals, water based products and the food, cosmetic and pharmaceutical industries. UPVC (SAP) meters (20mm size only) ideally suited for special applications associated with corrosive fluid such as sodium hypochlorite, acids, photographic solutions or any chemical compatible with UPVC. Multipulse meters available as blind meters with pulse output or with integral or remote totalisers, flow rate displays or preset batch controllers. Pulse meter outputs can be interfaced to most electronic displays or instrumentation. MP015 The Trimec MP015 Series Positive Displacement Flowmeter can be threaded, flanged or hygienic with a nominal flow range 10 to 600 lph (2.6 to 160 USgal/hr) Threaded, flanged or hygienicprocess connections Explosionproof or intrinsically safe operation Integral or remote self powered flow rate-totaliser with scaled pulse, analog and flow alarm outputs ( see separate data sheet )Integral or remote high speed preset batch controller ( see separate data sheet ) MP025 The Trimec MP025 Series Positive Displacement Flowmeter is performance independent of flow profile or mounting orientation. Threaded, flanged or hygienic process connections Explosionproof or intrinsically safe operation Integral or remote self powered flow rate-totaliser with scaled pulse, analog and flow alarm outputs ( see separate data sheet ) Integral or remote high speed preset batch controller ( see separate data sheet ) MP040 The Trimec MP040 Series Positive Displacement Flowmeter is adaptable to hygienic applications with both open collector and reed switch outputs as standard. Threaded, flanged or hygienic process connections Explosionproof or intrinsically safe operation Integral or remote self powered flow rate-totaliser with scaled pulse, analog and flow alarm outputs ( see separate data sheet ) Integral or remote high speed preset batch controller ( see separate data sheet ) MP050 The Trimec MP050 Series Positive Displacement Flowmeter measures low and high viscosity liquids up to 1,000,000 centipoise Threaded, flanged or hygienic process connections Explosionproof or intrinsically safe operation Integral or remote self powered flow rate-totaliser with scaled pulse, analog and flow alarm outputs ( see separate data sheet ) Integral or remote high speed preset batch controller ( see separate data sheet ) The Multi-pulse range of Flow Meters applications include: alcohols acetic acid caustic soda ethanol fuels grease glucose ink insecticides latex emulsions liquid sugar margarine mayonnaise molasses resin tallow urethane water xylene & liquid yeast. Trimec Multi-pulse Series Positive Displacement Flow Meter Document Downloads coming soon
