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Differential Pressure Capabilities

Technology	Model/ Series	Gas Flow	Liquid Flow	Steam Flow	Line Size	Temperature	Pressure	Viscosity	Accuracy	Considerations
DP Meters	ALDP									Must include DP transmitter

Differential Pressure Flow Meters

Differential Pressure Family
Technology	Model	Diameters	Flow Rate	Accuracy	Pressure	Temperature	Materials	Special Features
Cone	ACONE	½"~120" (15~3000mm)	Based on Re > 8000 For Gases, Liquid and Steam	Liquid: ± 0.5% of reading, Gas & Steam: ± 1.0% of reading	61,000 psig (420 Mpa)	320~1500°F (-196~850 °C)	SS #304L/SS #316L, CPVC ,PTFE, Brass, A106B A335-P11, A335-P22, Dual - Phase Steel, Inconel 625, Hastelloy C276	Reduced stright-pipe requirements; only 3 Φ upstream and 1 Φ downstream
DP 1051	ALDP-1051	ulimited	Depends (ACONE, ALDPWG or ALDPBL)	Accuracy GRADE 0.075, 0.2, 0.5	DP: 0～0.16 kPa to 0～10 Mpa, RP max 0～40 Mpa, min 0～0.16 Kpa AP max 0～25 Mpa, min 0～20 Kpa	-40~212 °F (-40 ~ 100 °C)	SS #316, Tantalum and other exotic materials	HART protocol, Profibus, or FOUNDATION fieldbus
DP-3051	ALDP-3051	ulimited	Depends (ACONE, ALDPWG or ALDPBL)	Accuracy GRADE 0.075, 0.2, 0.5	DP: 0～0.16 kPa to 0～10 Mpa, RP max 0～40 Mpa, min 0～0.16 Kpa AP max 0～25 Mpa, min 0～20 Kpa	-40~212 °F (-40 ~ 100 °C)	SS #316, Tantalum and other exotic materials	HART protocol, Profibus, or FOUNDATION fieldbus
Balance	ALDPBL	½"~12" (15~400mm)	Re < 500	(calibrated): 0.3% or 0.5%; (un-calibrated): 0.5% to 1%	61,000 psig (420 Mpa)	320~1500°F (-196~850 °C)	304L/SS, 306L, CPVC ,PTFE, Brass, A106B A335-P11, A335-P22, Dual - Phase Steel, Inconel 625, Hastelloy C276	No straight- run required, 50% lower DP loss vs. orifice, less noise and vibration
Wedge	ALDPWG	½” to 40” (15～DN1000 mm)	Re < 500	(calibrated): 1% or 0.5%; (un-calibrated): 3%	6000 PSIG (42.0MPa)	750 °F (400 °C)	Body: Cast lron, SS, high Talloy, Wedge:SS, Monel, Hastelloy C,high T alloy.	Bi-directional, good for high viscosity fluids; tar, sand,concrete, mud, etc.