KROHNE – AVERAGING PITOT TUBE FLOWMETER

The averaging pitot tube flowmeter requires the least installation effort of all DP flowmeters. It is cost-effective and suitable for a variety of applications. Its low remaining pressure loss and bi-directional flow capabilities make it the preferred instrument for water, sea water, condensate, cooling water, crude oil, saturated and superheated steam, nitrogen, combustion gases, ventilation air and many other liquids and gases. It can also be used for dust-laden gases at high-temperatures. The KROHNE averaging pitot tube flowmeter covers big diameters, round and rectangular pipes and ducts. It requires only short straight inlet/outlet pipe sections (7D/3D). Due to the low flow profile constriction it generates only a minimal residual pressure loss.

Features & Options

• Fast and easy installation without additional engineering, impulse lines and supports – allowing perfect retrofit capabilities
• Averaging flow profile for shortest in- and outlet runs
• Symmetrical design allows bidirectional flow measurement
• Low TCO due to reduced engineering, commissioning and installation costs
• Reduced need for recalibration in the field through advanced 3-D linearised OPTIBAR DP transmitters
• Complete flowmeter solution with averaging pitot tube, manifold, DP transmitter from a single source
• HART^®7, Foundation fieldbus and Profibus-PA communication options
• SIL 2/3 certified versions
• Ex ia, Ex d, Ex t approvals
• Redundant versions, pressure and temperature compensated versions available

General information

Product type	Flowmeter
Product family name	OPTIBAR
Product positioning	For applications with liquids, gases and steam to high-temperature applications with dust-laden gases
Measurement principle	Differential pressure
Measured media	Liquids, Gases, Steam
Nominal diameter / size	DN50…2500 / 2…100” (inne na życzenie)

Operating conditions

Process pressure	max. 0…320 bar / 4641.2 psi (gases, liquids) max. 180 bar / 2610.7 psi (steam)
Process temperature	-200…+1150°C/ -328…+2102°F

Materials

Measuring tube

Austenitic alloy (2.4602/Alloy 22), Austenitic stainless steel (1.4571/316Ti), Nickel-chrome-molybdenum-tungsten alloy (2.4819/Alloy C276), Chrome molybdenum steel alloy (1.5415/16Mo3)

Process connections

Flange connections	EN (1092-1): DN50…2000 (larger on request) ASME (B 16.5): 2…80″ (larger on request)
Weld-in connections	Weld-in fitting

Approvals/Standards

Certificates/Approvals Ex	ATEX, IECEx, NEPSI
Certificates/Approvals Others	Oxygen, ISO/TR 11583
Certificates/Approvals Safety	SIL 2/3
NAMUR compliance	NE 107, NE 21, NE 43, NE 53
Design standards	ISO 5167

Communication

Analogue outputs	4…20 mA
Digital outputs	FOUNDATION™ Fieldbus, HART®, Profibus-PA, Bluetooth®