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    斯亚乐仪表（Sierra）最新发布InnovaMass® 240超低温智能型多参数涡街质量流量计，更加先进、可靠地测量液化气体，例如液氮、液氧、液化天然气（LNG）、液化石油气等，最低可测量温度为-200℃。

过去人们用涡轮流量计测量液化气体，缺点是精确度不够，而斯亚乐推出的这款超低温型流量仪表测量精度非常高。而且InnovaMass® 240智能型涡街流量计没有可移动部件，不会磨损、无需维护。同时它还有读数稳定和超长使用寿命等优点。

新的InnovaMass® 240超低温智能型涡街质量流量计在过去的数年里历经大量的测试和现场校验，这些实验充分证明了它在测量温度低至-200℃的液化气体时的性能远远优于传统的涡轮流量计。它采用了特殊的超低温型温度热电阻技术，并使用了最新的密度状态方程来计算液氧、液氮、液化氩气和液化二氧化碳的质量流量。

        关于Sierra  Sierra公司创建于1971年1月，是美国一家知名的企业。该公司集热式质量流量计、微管式质量流量计和调节仪及智能型插入式多变量涡街质量流量计等各项产品的研发、生产、服务于一体。公司秉承美国科技之源，集世界一流专业人才，以先进的技术、严格的管理、卓越的服务，打造世界一流的品牌。Sierra公司总部在美国，美洲、欧洲及亚洲均设有分公司。

Monterey, CA — August 16, 2012 — Sierra Instruments today introduces a new cryogenic version of its InnovaMass® 240 multivariable mass vortex flow meter for advanced, more reliable measurement of liquefied gases, including liquid nitrogen, liquid oxygen, liquefied natural gas (LNG), liquefied petroleum gas (LPG), down to -330°F (-200°C).

Historically gauged by inexact turbine flow meters, liquid gas flow can now be calculated with precision using Sierra’s new flowmeter. The InnovaMass also contains no moving parts that will wear out or require service, an added advantage that provides stable readings and an increased service life.

The new InnovaMass cryogenic version has undergone extensive testing and field validation over the last several years, proving that the meter is preferred versus traditional turbine meters for measuring mass flow rates of cryogenic fluids down to -330°F (-200°C). Using a special cryogenic temperature RTD, mass calculations are done with the latest density equations of state for liquid oxygen, nitrogen, argon and carbon dioxide.  

The InnovaMass 240 can be loop powered with power in, a programmable analog output and a HART or MODBUS signal riding on the same two wires.