产品详情介绍
费希尔Fisher 646 电气转换器
Fisher 646电气转换器采用转换器模块，该模块可将4至20毫安输入信号转换为成比例的0.2至1.0barg（3.0至15psig）气动输出信号。小尺寸、抗振性、高输出能力、低耗气量
特性和优势
尺寸小—转换器尺寸小、重量轻，便于安装并提高空间利用率。
抗振性—该转换器在安装有标准阀门/执行机构的应用中使用时，按照SAMA标准PMC
31.1条件3测试，其输出偏移小于测试范围的1%。
高输出能力—转换器的输出量足以驱动阀门/执行机构组合，无需定位器或气体流量放大器。
低耗气量—转换器的气消耗量很低，从而降低了运营成本。
易于维护—转换器模块化设计便于现场更换，从而降低了维护成本。
的性能—准确性、线性及滞后小化的频率响应远远超过大多数控制系统的要求。
8. Specifications
8.1 Input Signal
4 to 20 mA DC, constant current with 30 VDC maximum
compliancevoltage
8.2 Equivalent Circuit
The 646 equivalent circuit is a series circuit consisting of a
constant voltage drop (battery) of approximately 2.1 VDC and a
total resistance of 143 ohms. Input is shunted by three 6.8 V
zener diodes
8.3 Output Signal
0.2 to 1.0 bar (3 to 15 psig) direct acting only
8.4 Supply Pressure(1)
Recommended:1.4 bar (20 psig)
Minimum:1.4 bar (20 psig)
Maximum:3.4 bar (50 psig)
8.5 Maximum Steady-State Air Consumption(2)
Air consumption is proportional to output pressure. Maximum
consumption at 1.0 bar (15 psig)
output is 0.20 normal m3/hr (7.8 scfh).
8.6 Electrical Classification
Intrinsic Safety, Explosion Proof
9. Options
9.1 Output pressure gauge
9.2 Regulator, Gauge, 67CFR-224
Fisher 646电气转换器采用转换器模块，该模块可将4至20毫安输入信号转换为成比例的0.2至1.0barg（3.0至15psig）气动输出信号。小尺寸、抗振性、高输出能力、低耗气量
特性和优势
尺寸小—转换器尺寸小、重量轻，便于安装并提高空间利用率。
抗振性—该转换器在安装有标准阀门/执行机构的应用中使用时，按照SAMA标准PMC
31.1条件3测试，其输出偏移小于测试范围的1%。
高输出能力—转换器的输出量足以驱动阀门/执行机构组合，无需定位器或气体流量放大器。
低耗气量—转换器的气消耗量很低，从而降低了运营成本。
易于维护—转换器模块化设计便于现场更换，从而降低了维护成本。
的性能—准确性、线性及滞后小化的频率响应远远超过大多数控制系统的要求。
8. Specifications
8.1 Input Signal
4 to 20 mA DC, constant current with 30 VDC maximum
compliancevoltage
8.2 Equivalent Circuit
The 646 equivalent circuit is a series circuit consisting of a
constant voltage drop (battery) of approximately 2.1 VDC and a
total resistance of 143 ohms. Input is shunted by three 6.8 V
zener diodes
8.3 Output Signal
0.2 to 1.0 bar (3 to 15 psig) direct acting only
8.4 Supply Pressure(1)
Recommended:1.4 bar (20 psig)
Minimum:1.4 bar (20 psig)
Maximum:3.4 bar (50 psig)
8.5 Maximum Steady-State Air Consumption(2)
Air consumption is proportional to output pressure. Maximum
consumption at 1.0 bar (15 psig)
output is 0.20 normal m3/hr (7.8 scfh).
8.6 Electrical Classification
Intrinsic Safety, Explosion Proof
9. Options
9.1 Output pressure gauge
9.2 Regulator, Gauge, 67CFR-224
