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DESCRIPTION

INVALCOʼs Dualpulse insertion flow transducer is an innovative design combining well proven technology with the performance enhanced by the use of modern engineering materials to provide a cost effective and reliable means of measuring the flow of a wide variety of low viscosity of liquids.

Specification

Sult Pipe Sizes DP490 DP525	1-1/2” - 36” (40-900mm) 2” - 100” (50-2500mm)
Process Connections DP490 DP525	1-1/2” BSPT (G1.5) or 1-1/2” NPT 2” BSPT (G2) or 2” NPT
Body & O-ring Material	316L(1.4404) stainless steel body & rotor shaft, viton O-rings
Rotor Material	PEEK (polyetheretherketone) with graphite-PTFE impregnated bearing
Velocity Range	1 - 33 ft / sec. (0.3-10 meters/sec)
Flow Range DP490 DP525	4 - 99600 GPM (0.25 - 6300 liters/sec) 6 -780000 GPM (0.4 - 49000 liters/sec)
Linearity & Repeatability	Linearity typically +/-1.5%, Repeatability +/-1% with well established flow profile
Maximum Pressure	1200 PSI (80 Bar)
Temperature Range	Standard -40°F to 212°F (-40°C to 100°C) plus 3 options up to 400°F (204°C)
Outputs (standard) transmission to 3000 ft (1000m) max.	Voltage Pulse self generated 1.5V x 10μs (2 wire) 200 - 240hz max. Open Collector NPN 5 - 24VDC square wave (3 wire) 200 - 240hz max.
Outputs (optional)	Reed Switch (2 wire) 66 - 80hz max. (can be used as I.S. with barrier) Non magnetic rotor + Hall Effect output (for liquids with ferrous impurities) I.S. inductance coil (2 wire) 400 - 480hz max. High temperature voltage pulse output to 400°F (200°C) Quadrature output (dual Hall Effect output with 90 phase shift)
Conduit Entry	3/8” NPT or PG9 conduit thread (M16 x 1.5 on terminal box option)
Cable	10 ft (3 meters) screened 5 core as standard, longer lengths are optional
Mounting Requirements	BSP / NPT service saddle or thread-o-let
Shipping Weights DP490 DP525	3.5 lbs (1.6kg) 5.5 lbs (2.5 kg)

FEATURES

- All stainless steel construction.
- Suits pipes 1-1/2” to 100” (40 to 2,500mm) nominal bore.
- Low installed cost.
- Dual independent pulse outputs each with high noise immunity (CE compliant).
- High pressure submersible design.
- Both open collector and a non powered voltage pulse output as standard.
- DP525 series suitable for Hot Tap installations.

OPTIONS

- High temperature to 400°F (204°C).
- Reed switch options for hazardous area operation (intrinsically safe).
- Integral self powered flow rate-totalizer with scaled pulse, analog and flow alarm outputs.
- Non magnetic rotor option for liquids containing ferrous suspensions.
- Optional I.S. Coil output or Bi-directional discriminator output.
- Integral Data Logger.

CONSTRUCTION

- A durable peek rotor with a graphite-PTFE impregnated peek bearing rotates around a Tungsten Carbide shaft to promote longevity. The body is all 316L stainless steel.
- The unique metering head and aerofoil shaped rotor are shaped to extend the linear measuring range to cover flow velocities from 1 - 33 ft/s (0.3 - 10 m/s)

APPLICATIONS

- 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.