Allen-Bradley 1746-NR8电阻输入模块 PDF资料
1.产 品 资 料 介 绍：
Allen-Bradley 1746-NR8 是一款专为 SLC 500 系列设计的 8 通道电阻温度检测器（RTD）输入模块，用于精确测量温度信号。
产品特点（15条）：
1746-NR8 提供 8 个独立的 RTD 输入通道，可同时连接 8 路温度传感器
兼容多种 RTD 类型，包括 Pt 385（100Ω、200Ω、500Ω、1000Ω）、Pt 3916（100Ω）、Ni 672（120Ω）、Ni 618（100Ω）及 Cu 426（10Ω）
支持 3 线制和 4 线制 RTD 连接方式，自动补偿引线电阻误差
测量温度范围 -200°C 至 850°C（Pt 100），覆盖工业常见温区
也可直接测量电阻值，范围 0 至 3270Ω，用于其他阻型传感器
分辨率达 0.1°C 或 0.1Ω，满足高精度测温要求
精度为 ±0.5°C（典型值），确保数据准确可靠
每个通道可独立使能或禁用，灵活配置使用数量
内置开路传感器检测功能，断线时自动上报故障
通道间隔离设计，减少相互干扰，提高系统稳定性
1746-NR8 采用可拆卸式接线端子，便于现场安装与维护
背板电流消耗 400 mA（5V DC）和 50 mA（24V DC）
工作温度范围 0°C 至 60°C，适合控制柜内安装
配备 LED 状态指示灯，显示模块运行及故障状态
无需外部激励电源，模块内部提供恒流源驱动 RTD 传感器
结尾：综上所述，1746-NR8 凭借 8 通道高密度输入、多类型 RTD 兼容及 0.1°C 分辨率，是 SLC 500 系统中精确温度测量的可靠选择。
Allen-Bradley 1746-NR8电阻输入模块 英文介绍
The Allen Bradley 1746-NR8 is an 8-channel resistance temperature detector (RTD) input module designed specifically for the SLC 500 series, used for precise measurement of temperature signals.
Product features (15 items):
1746-NR8 provides 8 independent RTD input channels, which can simultaneously connect 8 temperature sensors
Compatible with multiple RTD types, including Pt 385 (100 Ω, 200 Ω, 500 Ω, 1000 Ω), Pt 3916 (100 Ω), Ni 672 (120 Ω), Ni 618 (100 Ω), and Cu 426 (10 Ω)
Supports 3-wire and 4-wire RTD connection methods, automatically compensates for lead resistance errors
Measurement temperature range -200 ° C to 850 ° C (Pt 100), covering common industrial temperature zones
It can also directly measure the resistance value, ranging from 0 to 3270 Ω, for other resistance sensors
Resolution up to 0.1 ° C or 0.1 Ω, meeting high-precision temperature measurement requirements
Accuracy of ± 0.5 ° C (typical value), ensuring accurate and reliable data
Each channel can be independently enabled or disabled, with flexible configuration of usage quantities
Built in open circuit sensor detection function, automatically reports faults when disconnected
Isolation design between channels to reduce mutual interference and improve system stability
1746-NR8 adopts detachable terminal blocks for easy on-site installation and maintenance
Backplane current consumption of 400 mA (5V DC) and 50 mA (24V DC)
Working temperature range from 0 ° C to 60 ° C, suitable for installation inside control cabinets
Equipped with LED status indicator lights to display module operation and fault status
No external excitation power is required, the module provides a constant current source to drive the RTD sensor internally
Conclusion: In summary, 1746-NR8 is a reliable choice for accurate temperature measurement in SLC 500 systems due to its 8-channel high-density input, compatibility with multiple types of RTDs, and 0.1 ° C resolution.
Allen-Bradley 1746-NR8电阻输入模块 产品展示
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