产品详情
技术说明:FBM202 P0926EQ FBM202热电偶/mV输入模块
- 支持最多 16 个热电偶或 mV 输入
- 热电偶类型:B、E、J、K、N、R、S、T
- mV 输入范围:-100 至 1000 mV
- 分辨率:16 位
FBM202热电偶/mV输入包含8个热电偶输入通道和一个隔离的RTD参考结补偿通道(用于终端温度传感)。每个热电偶/毫伏通道接受各种温度范围的标准热电偶,每个热电偶都提供烧坏检测(高档)。输入与其他通道和地电隔离。
该模块执行从现场传感器到可选冗余现场总线的电气输入信号接口所需的信号转换。它执行模拟输入应用程序,提供集成时间和变化率限制可配置选项。
当连接到适当的TAs时,FBM202模块提供以前由100系列FBM I/O子系统提供的功能。ta可以支持100系列FBM02的功能。
特性
FBM202的主要特点是:
8通道热电偶信号输入
一个隔离的RTD参考结补偿通道(用于终端温度传感)
每个输入通道都是电隔离的
坚固耐用的设计,适用于G3(恶劣)环境的外壳
模拟输入应用程序的执行,该程序提供转换时间和可配置的变化率限制选项
通过每个通道的sigma-delta数据转换实现高精度
终端组件(TAs)用于本地或远程连接现场布线到FBM202
为了实现高精度,该模块在每个通道的基础上集成了SigmaDelta数据转换,可以每25毫秒提供新的模拟输入读数,并且可以配置集成周期以消除任何过程噪声和电源线频率。
在每个时间段内,FBM将每个模拟输入转换为数字值,在时间段内对这些值进行平均,并将平均值提供给控制器。
标准设计
FBM202有一个坚固的挤压铝外部物理保护电路。专门为安装fbm设计的外壳提供各种级别的环境保护,达到恶劣环境,符合ISA标准S71.04。
视觉指标
模块前部的红色和绿色发光二极管(led)提供FBM运行状态的视觉状态指示。
FBM202
The FBM202 Thermocouple/mV Input contains eight thermocouple input channels, and one isolated RTD reference junction compensation channel (for terminal temperature sensing). Each thermocouple/mV channel accepts standard thermocouples for various temperature ranges, and each provides thermocouple burnout detection (up-scale). The inputs are galvanically isolated from other channels and ground.
The module performs the signal conversion required to interface the electrical input signals from the field sensors to the optionally redundant Fieldbus. It executes an Analog Input application program, which provides integration time and Rate of Change Limits configurable options.
When connected to the appropriate TAs, the FBM202 module provides functionality formerly provided by the 100 Series FBM I/O subsystem. TAs are available which support the functionality of the 100 Series FBM02.
FEATURES
Key features of the FBM202 are:
Eight channels for input of thermocouple signals
One isolated RTD reference junction compensation channel (for terminal temperature sensing)
Each input channel is galvanically isolated
Rugged design suitable for enclosure in Class G3 (harsh) environments
Execution of an analog input application program that provides conversion time and configurable options for Rate of Change Limits
High accuracy achieved by sigma-delta data conversions for each channel
Termination Assemblies (TAs) for locally or remotely connecting field wiring to the FBM202
For high accuracy, the module incorporates SigmaDelta data conversion on a per-channel basis, which can provide new analog input readings every 25 ms, and a configurable integration period to remove any process noise and power line frequencies.
Each time period, the FBM converts each analog input to a digital value, averages these values over the time period and provides the averaged value to the controller.
STANDARD DESIGN
FBM202 has a rugged extruded aluminum exterior for physical protection of the circuits. Enclosures specially designed for mounting the FBMs provide various levels of environmental protection, up to harsh environments, per ISA Standard S71.04.
VISUAL INDICATORS
Red and green light-emitting diodes (LEDs) incorporated into the front of the module provide visual status indications of the FBM operational status.
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