一、概      述

　　ZR-E33法兰安装式差压变送器用于测量含有固体和沉淀性液体和蒸汽的液位和密度,然后转

变成4～20mA DC的电源信号输出。HR-E33可与HART手操器相互通讯，进行设定、监控等。

二、标准规格

(以标准零点为基准调校量程，接液部分材质代码“S”3-inch平法兰型和4-inch凸法兰型)

三、性能规格
 
调量程的参考精度                                                           外部调零

(包括线性、滞后性和重复性)                                      在测量范围内连续可调，分辨率为0.01%，用表

±0.25%                                                                          头上的测量范围设定开关可调校量程

若量程小于量程上限                                                      安装位置影响

±[0.2+0.05量程上限 ]%                                              与膜片面平行方向的安装位置变化不会造成零漂

            量程                                                                      影响，若安装位置与膜片面超过90°的变化，在

                                                                                          0.4kPa范围内的零漂可通过调零校正

环境温度影响                                                                  输   出

总影响量/28℃变化                                                       2线制，4～20mA DC输出，数字通讯，可编程设

量程代码4    ±[0.25%量程+0.056%量程上限]           定线性或平方根输出方式

量程代码5、6 ±[0.15%量程+0.028%量程上限]       环境温度

静压影响                                                                          -40～85℃(-40～185°F)

变化的总影响量                                                              -30～80℃(-22～176°F)［带LCD表头］

±[0.058%量程+0.015%量程上                                    接液温度

限]/0.69MPa{100psi}                                                      -40～120℃(-40～248°F)

零点影响(可通过在线校正)                                            环境湿度

±0.02%量程上限/0.69MPa                                          5～99%RH
                                                                                  
稳定性                                                                              电源电压
                                                                                
±0.2%量程上限/12个月                                               10.5～42V DC(工作状态)
           
电源影响                                                                         10.5～30V DC(本安型)
                                                                      
±0.015%/V(21.6V～32V DC，350Ω)                           16.4～30V DC(数字通讯)             

调    零                                                                             16.4～30V DC(本安型)
         
在膜盒量程的上下限范围内，零点可任意调校          负   载
                                                                                         0～1335Ω工作状态
                                                      
                                                                                         250～600Ω数字通讯