Cryogenic design

L

Cryogenic design

Models in the L cryogenic design are intended for operation with cryogenic liquids at extremely low temperatures. The process medium temperature is from −196 °C to +150 °C. Available only with tube types U and Δ. High sensitivity at low flow rates of liquid nitrogen, oxygen, methane and other cryogenic media. Compact design with extended service life.

Technical specifications Request a quote

−196 °C…+150 °C U / Δ tubes DN08–DN80 For cryogenic liquids

Mass-EXPERT flow meters, cryogenic design L

Overview

L — Cryogenic design

Design L is specifically engineered for measuring the flow of cryogenic liquids at extremely low temperatures. Special materials, design solutions and cryogenic insulation ensure stable operation at temperatures from −196 °C to +150 °C. High sensitivity at low flow rates makes design L the ideal choice for accurate dosing and metering of liquefied gases.

−196…+150

°C medium temperature range

U / Δ

Tube types

DN08–DN80

Available sizes

LN₂ / LO₂ / LNG

Cryogenic media

Key features

Cryogenic temperature range — from −196 °C to +150 °C for operation with the coldest media

High sensitivity at low flow rates — accurate measurement even at minimum flow rates of cryogenic liquids

U and Δ tubes only — proven configurations for reliable operation in cryogenic conditions

Compact design — optimised dimensions for installation in confined spaces

Extended service life — special materials and coatings resistant to low-temperature embrittlement

Cryogenic insulation — protection against icing and condensation, reduced heat ingress

Vacuuming and inert gas filling — available as an option to protect against condensation and icing in cryogenic service

Recommended applications

Liquid nitrogen (LN₂) Liquid oxygen (LO₂) Liquefied methane (LNG) Oil & gas industry Chemical industry Power & utilities Cryogenic storage and transport Dosing of cryogenic media

Examples

Design L — Cryogenic

Appearance of L cryogenic models with U-shaped and Δ-shaped tubes

L — Cryogenic design, size DN08

L — Cryogenic design, size DN25

L — Cryogenic design, sizes DN40 / DN50 / DN80

L: cryogenic design

Sensor in the cryogenic L design

Flow meter for the cryogenic industry

Cryogenic flow meter test (D execution, DN25)

Technical specifications

L size table

Key parameters of design L for various sizes

Size	Tube type	Medium temperature range	Recommended media
DN08..L	U	−196 °C…+150 °C	Liquid nitrogen (LN₂), liquid oxygen (LO₂)
DN25..L	U / Δ	−196 °C…+150 °C	Liquid nitrogen, oxygen, methane (LNG)
DN40..L	U	−196 °C…+150 °C	Liquefied methane (LNG), liquid nitrogen
DN50..L	U	−196 °C…+150 °C	LNG, liquid oxygen, cryogenic mixtures
DN80..L	U	−196 °C…+150 °C	LNG, high cryogenic liquid flow rates

Applications

Where it is used

Cryogenic technologies

LNG

LNG refueling (cryo stations)

Oil & gas

Chemicals

Thermal power & utilities

Tube configurations

Measuring tube types

Design L is available with two tube types — U and Δ

U-shaped tubes

Classic configuration with a wide U-shaped bend. Provides maximum sensitivity at low flow rates of cryogenic liquids. The U type covers the entire DN08–DN80 range; U-shaped tubes are used for high cryogenic medium flow rates (DN40, DN50, DN80).

Δ-shaped tubes (delta)

Delta-shaped tube configuration with improved stiffness and resistance to thermal deformation. In the cryogenic design, the Δ type is available for DN25 only.

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