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罗斯蒙特的3051C压力变送器为压力测量技术创建了一个新的标准。罗斯蒙特3051压力变送器具有无可比拟的操作性能、灵活的CoPlanarTM平台，而且可以升级。新型罗斯蒙特3051C压力变送器的性能指标保证了在不同工况下的精度和稳定性。
工作原理：工作时，高、低压侧的隔离膜片和灌充液将过程压力传递给灌充液，接着灌充液将压力传递到传感器中心的传感膜片上。传感膜片是一个张紧的弹性元件，其位移随所受压而变化（对于GP表压变送器，大气压如同施加在传感膜片的低压侧一样）。AP绝压变送器，低压侧始终保持一个参考压力。传感膜片的更大位移量为0.004英寸（0.1毫米），且位移量与压力成正比。两侧的电容极板检测传感膜片的位置。传感膜片和电容极板之间电容的差值被转换为相应的电流，电压或数字HART（高速可寻址远程发送器数据公路）输出信号。
罗斯蒙特3051压力变送器的应用
增强型罗斯蒙特3051新型压力变送器参数：
保修期限：5年有限保修期
量程比：150：1 （老型号为100：1）
测量范围：高达2000 psi（137,89 bar）
输出：差压，比例变量
通讯协议：4-20 mAHART®，WirelessHART®，FOUNDATION?现场总线，PROFIBUS®，1-5 V低功耗HART®
工艺接液材料：316L SST，合金C-276，合金400，钽，镀金合金400，镀金316L SST
诊断：基本诊断，电源咨询诊断
工艺接液材料：316L SST，合金C-276，合金400，钽，镀金合金400，镀金316L SST
认证/认证：SIL 2/3通过独立第三方，NSF，NACE，危险场所认证，符合IEC 61508标准
增强型罗斯蒙特 3051 压力变送器
|
测量类型 |
差压、表压、绝压、液位和流量 |
|
输出 |
4-20mA HART（修订版本 5 和 7）) |
|
参考精度 |
+ 0.04% 量程 |
|
总体性能 |
+ 0.12% 量程 |
|
长期稳定性 |
5 年 + 0.125% 的范围上限 |
|
量程比 |
150:1 |
|
完整规格 (3320KB) |
|
二、技术参数：
总体性能：±0.15%
精度：±0.075%
差压：校验量程从0.5inH2O至2000psi
表压：校验量程从2.5inH2O至2000psi
绝对压力：校验量程从0.167psia至4000psia
过程隔离膜片：不锈钢，哈氏合金CR，蒙乃尔R，钽（CD，CG）及镀金蒙乃尔
设计小巧、坚固而质轻，易于安装
罗斯蒙特3051CD/CG变送器常用型号:
3051CD3A03A1AFAL4M5
3051CD0A22A1AB4K5M5DF
3051CD1A22A1AB4K5M5DF
3051CD2A22A1AB4K5M5DF
3051CD3A22A1AB4K5M5DFP9
3051CD4A22A1AB4E5M5DFQ4
3051CG1A22A1AB4E5M5
3051CG2A22A1AB4K5M5
3051CD3A22A1BM5B4DFD4HR5
3051CD4A22A1AM5B4DFE5
3051CD0A02A1AH2B1E5L4M5DFD4HR5
3051CD3A22A1AB4DF
3051CD3A02A1AS5+0301RC32B11B4
3051CD2A02A1BM5K5S5Q4Q8D4HR5+0305RM52A11BDL4
3051CD2A02A1AM5I1D4S5HR5+0301RC32B11B4
3051CD2A02A1AM5I1D4S5HR50301RC32B11B4
3051CD3A22A1BM5B4DFP9
3051CD1A22A1BB4M5HR5
3051CD1A22A1AM5B4DFE5
3051CD4A22A1BM5B4I1HR5
3051CD3A72A1JB4K2L4M5DF
3051CD1A22A1AB4K5M5DF
3051CD2A22A1AS2B4M5K5Q4HR5+1199WDA95KRFWFGDAA5+1199MDG53KRFWFGDAA5
3051CD3A02A1AH2B3
3051CD2A22A1JB4M5HR5
3051CD3A22A1JB4M5HR5
3051CD2A22A1BM5B4D4DFWR3Q4C1HR5
3051CD0A22A1BM5B4D4DFWR3Q4C1HR5
3051CD1A22A1BB4S2I5M5HR5+1199WCB56GFFWG1DA00
3051CD2A22A1AB4E8L4M5Q4DFT1
3051CD3A22A1AM5B4D4HR5
3051CD4A22A1AB4K5M5HR5
3051CD2A02A1AE8M5T1C1QTQ4D4HR5C4S5+0305RC52B11B4L4
3051CD4A02A1AE8M5T1C1QTQ4D4HR5C4S5+0305RC52B11B4L4
3051CD4A02A1AE8M5T1C1QTQ4D4HR5+0305RC52B11B4L4
3051CD3A02A1AE8M5T1C1QTQ4D4HR5C4S5+0305RC52B11B4L4
3051CD2A02A1AE8M5T1C1QTQ4D4HR5CNS5+0305RC52B11B4L4
3051CD1A22A2AE8M5HR5
3051CD2A22A1AM5B4DFK5
3051CD2A23A1AB4M5
3051CD3A02A1BS5M5HR5
3051CD2A22A1KB4S2M5E5HR5+1199WCB57GEFW91DA20
3051CD3A22A1AM5B4DFK5
3051CD3A02A1BI1H2L4P1Q4
3051CD0A02A1AB4H2HR5
3051CD3A22A1BS2B4I5HR5+1199WDB54GFFWG4DA00
3051CD3A22A1AB4M5I5HR5
3051CD2A22A1BB4M5D4HR5
3051CD0A02A1BH2B1E5M5L4D4HR5
3051CD1A22A1AB4TK
3051CD3A22A1AB4E5M5DFHR5
3051CG5A22A1AM5B4DF
3051CG5A02A1AM5B3DFH2
3051CG1A22A1AB4I1M5
3051CG2A22A1BM5B4D4K5DFWR3Q4C1HR5
3051CG3A22A1BM5B4D4K5DFWR3Q4C1HR5
3051CG2A22A1BM5B4D4DFWR3Q4C1HR5
3051CG4A02A1AS5K6
3051CG5A02A1AS5K6
3051CG4A22A1AB4K5M5
3051CG5A22A1BB4
3051CG2A22A1AB4M5K5HR5
3051CG4A22A1AS1M5B4+1199WDC56KFFWGGDA00
3051CG3A22A1BD4M5HR5
3051CG4A02B1BS5M5B4Q8D4D0V5+0305RC22B21L4
3051CG4A22A1BD4M5HR5
3051CG5A22A1AK5M5
3051CG4A22A1AK5M5
3051CG4A22A1BM5B4DF
3051CG1A22A1AB4DFM5
3051CG4A25A1AB4M5E8DFHR5
3051CG5A02A1AB3M5H2
3051CG1A22A1AB4E5M5HR5
3051CG1A22A1BB4L4M5DF
3051CG2A22A1BB4DFL4Q4C4
3051CG2A22A1BB4L4M5DF
3051CG1A22A1BB4L4M5DF
3051CG2A22A1AM5B4DFI1
3051CG2A22A1AS1M5B4I1+1199WDF59GFFW71DA00BE
3051CG4A22A1BB4M5HR5DF
3051CG4A22A1BB4M5HRDF
3051CG4A22A1BS1M5HR5
3051CG2A22A1AM5S1HR5+ 1199WDAB3KRFWDGDAA5
3051CG4A22A1BM5B4HR5
3051CG5A22A1BM5B4HR5
3051CG2A22A1AS1M5E5T1Q4D4HR5+1199WDAB3GFFWG1DA00
3051CG3A22A1AB4M5K5HR5
3051CG2A02A1AM5H2B1HR5
3051CG4A22A1AB4TK
3051CG2A22A1BB4M5DFTK
3051CG5A22A1AM5B4E5T1Q4
3051CG2A02A1AB4K5
3051CG2A02A1AB4I1
3051CG2A22A1AM5S1HR5+1199WDAB3KRFWDGDAAD5
3051CG3A22A1AM5B4
3051CG4A22A1AB4M5DFHR5
3051CG5A02B1BS5M5B4Q8D4D0V5+0305RC22B21L4
3051CG1A22A1AB4M5K5
3051CG4A22A1AM5E8T1
3051CG4A22A1AB4K7M5HR5
3051CG5A22A1AS1I1M5Q4Q8QTC1C4DOV5Q15HR5+1199WDAB3AFCWG4KB00Q15
3051CG4A22A1AB4S1+1199WDC59KFFWGGDAA7
3051CG2A222A1AHR5B4K5M5Q4
3051CG1A22A1AM5B4
3051CG5A22A1AB4M5DFHR5
3051CG2A22A1BM5B4DF
3051CG5A22A1AM5B4DFD4HR5
3051CG5A27A1AB4M5I1HR5
3051CG4A22A1BS5K8Q4Q8
3051CG1A22A1AB4M5S1+1199WDA95KFFWGGDA00
3051CG1A22A1BB4M5E5S1+1199WCA95KRFWDGDAA5
3051CG4A02A1AH2B715L4M5DF
3051CG4A22A1BB4L4M5DFQ4
3051CG4A22A1AB4
3051CG4A52A1AB4
3051CG5A22A1AM5B4E5D4Q4
3051CG4A22A1AHR5M5D4I5B4DF
3051CG1A22A1AM5B4DF
3051CG3A22A1BB4
3051CG5A22A1BB4K8HR5
3051CG4A22A1BB4K8HR5
3051CG4A22A1AB4M5K8HR5
3051CG3A22A1BB4
3051CG5A22A1BB4DF
3051CG4A25A1AB4M5K5HR5
3051CG1A22A1AB4E5
3051CG4A22A1AB4HR5
3051CG4A22A1AB4M5
3051CG4A24A1BM5DFQ4
3051CG4A22A1AM5B4HR5
3051CG3A22A1BB4
3051CG4A03A1AM5B7DFDOK8H3L4D4Q4Q8CNQTQ15
3051CG4A22A1AM5B4I1L4D4
3051CG2A22A1AM5B4E5D4
3051CG4A22A1AB4K5M5
3051CG5A22A1AB4K5M5
3051CG4A22A1AB4S1M5+1199WDC64KFFWGGDA00
3051CG2A02A1AM5B1H2
3051CG5A02A1BM5I1P1S5Q4HR5
3051CG3A05A1AFCS1I4M5Q4+1199WDA93AFFW71DA9E
3051CG1A22A1AB4M5
3051CG2A22A1AB4M5
3051CG5A22A1AB4I5M5S1+1199WDF56GFFWG2CC00
3051CG4A02A1AB7H2L4Q4HR5
3051CG3A22A1KB4
