一、概述

罗斯蒙特音叉液位开关提供易于安装以及可靠的液位检测和控制。其通过第 3方 IEC61508（SIL2）的安全和卫生认证，并可选择输出，具有广泛的用途。 其没有移动零件，不需要校准，几乎不受工艺条件的影响。 可调切换延迟功能能够防止紊流应用中的误合闸。 了解流程中正在发生的情况——可见的心跳式 LED 提供设备状态和健康状态，磁力测试点提供易于使用的功能测试。

三、规格 

Communication Protocol         Direct Load, PLC/PNP, Relay, 8/16 mA, NAMUR

   Process Media Density             Minimum 37.5 lb/ft³ (600 kg/m³)                    

                             Viscosity          0.2 to 10000 cP (centiPoise)            

          Operating Pressure          Full vacuum to 1450 psi (Full vacuum to 100 bar)      

  Operating Temperature          -40 to 302 °F (-40 to 150 °C)                     

                                 Safety           SIL2 IEC 61508 certified
                                                       TÜV tested and WHG approved for overfill prevention
                        Diagnostics           Electronic self-checking and condition monitoring

三、功能

• Magnetic test point makes testing of the Rosemount 2120 easy

• Can be operated using the sun or battery as a power source with the 12Vdc option

• Fast drip fork design gives a quicker response time, especially with viscous liquids

• Adjustable switching delay enables easy handling of turbulent and splashing applications

• 3-A and EHEDG certificates for hygienic applications. Compliance with FDA and ASME-BPE standards

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