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DESCRIPTION

INVALCOʼs Multipulse PD flowmeters utilize the oscillating piston design principle. Performance is enhanced by the use of modern engineering materials to provide a cost effective and reliable solution for a wide range of industrial flow measurement applications.

Specifications

Body Material MP025S MP025A MP025H	316L stainless steel Aluminum 316L stainless steel
Nominal Flow Spans	0.5 to 13.2 gpm (2 to 50 lpm) *Turndown (flow range) varies in accordance with effective viscosity of metered liquid
Accuracy	+/-0.5% of rate Accuracy and turndown can be improved when utilizing the linearization feature of the optional rate totalizer.
Repeatability	Typically +/-0.3% under steady flow conditions
Maximum Pressure MP025S MP025A MP025H	1500 psi (100 bar) 440 psi (30 bar) 5150 psi (350 bar)
Temperature Range	Three ranges covering operation from - 40°F to 300°F (-40°C to 150°C) limited to 176°F (80°C) with integral electronic register
Piston Material	PEEK (polyetheretherketone), optional carbon filled teflon
O-Ring Material	viton, EPR (EPDM), teflon encapsulated viton or nitrile (Buna-N)
Reed Switch Output	30 vdc maximum voltage, 20mA maximum current Pulse resolution: 76 pulses / gallon (20 pulses / liter)
Open Collector Output	5 to 24vdc (25vdc maximum) 3 wire NPN (sinking current) 20mA maximum current - 3300 ft (1000 meters) maximum transmission Pulse resolution: nominally 380 pulses / gallon (100 pulses / liter)
Electrical Connection	M20 x 1.5 or 1/2” NPT female entry
Process Connections MP025S MP025A MP025H	1” BSPP or NPT 1” ANSI 150/300RF Flanges DN25 PN16/40 flanges 40mm triclamp hygienic(others on request) 1” BSPP or NPT (Lap Joint Flanges on Request) 1” BSPP or NPT (others on request)
Environmental Protection	IP67 (Nema 4X), optionally flameproof to Exd IIB T4 (Class 1, Groups C & D)
Recommended Filtering	250 microns (50 mesh)

FEATURES

- IP67 (NEMA 4X) 316L stainless steel or aluminum construction.
- Nominal flow range 0.5 to 13.2 gpm (2 to 50 lpm)
- Performance independent of flow profile or mounting orientation.
- Single moving part.
- Pressure to 5,150 psi (350 bar).
- Temperature to 300°F (150°C)
- Both open collector and reed switch output as standard.
- Measures low and high viscosity liquids up to 1,000,000 centipoise.
- Adaptable to hygienic applications.

OPTIONS

- Threaded, flanged or hygienic process connections.
- Explosionproof or intrinsically safe operation.
- Integral self powered flow rate-totalizer with scaled pulse, analog and flow alarm outputs.

DESIGN SIMPLICITY

- The simple and robust design of the INVALCO PD Flowmeter offers the advantage of only one moving part with both high resolution open collector and dual reed switch outputs as standard.
- As each piston rotation passes a known liquid volume, the inherent repeatability of the multipulse positive displacement flowmeter makes it particularly suited to batching and dispensing duties.

APPLICATION FLEXIBILITY

- Commonly metered liquids range from nonconductive low viscosity solvents to extremely viscous lubricants, chemicals and food bases.
- Application flexibility is further enhanced as meter performance is independent of flow profile eliminating the need for straight pipe runs required with most other metering technologies.
- Multipulse has no stagnate chambers to harbor contaminants. There are no restrictions on mounting orientation and the flowmeter may be operated under vacuum flow, pumped flow or gravity flow conditions.