ABB FEP321-025A 电磁流量计

Description

以下是ABB FEP321-025A ProcessMaster 300型电磁流量计（标称流量范围200 L/min）的核心技术参数及分析，结合工业应用场景与ABB技术标准整理：

一、ABB FEP321-025A基础技术参数

1. 测量原理
   • 基于法拉第电磁感应定律，通过测量流体切割磁力线产生的感应电动势计算流量。
   • 无机械可动部件，适用于导电液体（电导率需≥5 μS/cm）。
2. 流量范围
   • 标称流量：200 L/min（对应特定管径，需根据DN值换算流速）。
   • 流速范围：0.1～10 m/s（典型值，实际需结合管径与介质密度）。
3. 精度与重复性
   • 精度：±0.5%（标准工况下，受流体特性影响）。
   • 重复性：±0.2%（优于精度，体现长期稳定性）。
4. 压力与温度
   • 压力等级：PN16/ANSI 150（常见工业标准，支持更高压力定制）。
   • 温度范围：-20℃～+130℃（取决于内衬材料，如PTFE内衬上限为130℃）。

二、ABB FEP321-025A结构与电气参数

1. 结构形式
   • 分体式设计（传感器与变送器分离），传感器型号FEP321-025A，变送器需另配（如FEP900系列）。
   • 防护等级：IP67（传感器）/IP66（变送器），防尘防水。
2. 电气接口
   • 供电：85～265 VAC或20～36 VDC（可选）。
   • 输出信号：4～20 mA（带HART协议），脉冲/频率输出（可选）。
   • 通信协议：HART 7（支持双向数字通信，兼容标准DCS/PLC系统）。
3. 电气连接
   • 传感器与变送器电缆：标配10米（可延长至100米，需特殊电缆）。
   • 电缆屏蔽：双端接地，抗电磁干扰（EMI）设计。

三、ABB FEP321-025A材质与认证

1. 内衬与电极
   • 内衬材料：PTFE（耐腐蚀性强，适用于强酸碱介质）。
   • 电极材料：316L不锈钢（标准配置，可选哈氏合金C-276或钽电极）。
2. 防爆认证
   • ATEX Ex d IIC T6（可选），适用于Zone 1/2危险区域。
   • CSA/FM认证（北美市场适用）。

四、功能特性

1. 自诊断与报警
   • 空管检测、电极污染报警、励磁断线检测（通过HART协议输出状态码）。
   • 流量上下限报警（可编程设定）。
2. 安装适应性
   • 水平/垂直安装（垂直安装需确保满管）。
   • 前后直管段要求：前5D/后2D（D为管径，优化后可达前3D/后1D）。
3. 校准与溯源
   • 出厂校准：基于水介质，提供NIST可溯源证书。
   • 现场校准：支持HART手操器零点校准与小信号切除调整。

五、选型与订货建议

1. 关键参数确认
   • 确认介质电导率（需≥5 μS/cm，低电导率介质需选低频励磁型号）。
   • 确认管径（FEP321-025A中的“025”可能对应DN25，需核实）。
   • 确认过程温度与压力（选择合适的内衬与电极材质）。
2. 订货代码示例
   • 传感器：FEP321-025A（DN25，PTFE内衬，316L电极）。
   • 变送器：FEP900-A（带HART，IP66防护）。
   • 电缆：FEP-CABLE-50M（50米延长电缆）。

六、应用场景

• 化工行业：酸碱溶液计量（耐PTFE内衬与哈氏合金电极）。
• 水处理：原水/废水流量监测（宽量程比与抗污设计）。
• 食品饮料：CIP清洗流量控制（符合FDA材质要求，可选卫生型连接）。

The following are the core technical parameters and analysis of ABB FEP321-025A ProcessMaster 300 electromagnetic flowmeter (nominal flow range of 200 L/min), combined with industrial application scenarios and ABB technical standards:

1、 ABB FEP321-025A Basic Technical Parameters
measuring principle
Based on Faraday’s law of electromagnetic induction, the flow rate is calculated by measuring the induced electromotive force generated by fluid cutting magnetic field lines.
No mechanical movable parts, suitable for conductive liquids (conductivity must be ≥ 5 μ S/cm).
Flow range
Nominal flow rate: 200 L/min (corresponding to specific pipe diameter, flow rate needs to be converted based on DN value).
Flow velocity range: 0.1-10 m/s (typical value, actual needs to be combined with pipe diameter and medium density).
Accuracy and repeatability
Accuracy: ± 0.5% (under standard operating conditions, affected by fluid characteristics).
Repeatability: ± 0.2% (better than accuracy, reflecting long-term stability).
Pressure and temperature
Pressure rating: PN16/ANSI 150 (common industry standard, supports higher pressure customization).
Temperature range: -20 ℃ to+130 ℃ (depending on the lining material, such as PTFE lining with an upper limit of 130 ℃).
2、 ABB FEP321-025A Structure and Electrical Parameters
structural style
Split design (sensor and transmitter separated), sensor model FEP321-025A, transmitter needs to be separately equipped (such as FEP900 series).
Protection level: IP67 (sensor)/IP66 (transmitter), dustproof and waterproof.
electrical interface
Power supply: 85-265 VAC or 20-36 VDC (optional).
Output signal: 4-20 mA (with HART protocol), pulse/frequency output (optional).
Communication protocol: HART 7 (supports bidirectional digital communication and is compatible with standard DCS/PLC systems).
Electrical connection
Sensor and transmitter cables: Standard configuration is 10 meters (can be extended up to 100 meters, special cables are required).
Cable shielding: Double ended grounding, designed to resist electromagnetic interference (EMI).
3、 ABB FEP321-025A Material and Certification
Lining and electrodes
Lining material: PTFE (highly corrosion-resistant, suitable for strong acid-base media).
Electrode material: 316L stainless steel (standard configuration, optional Hastelloy C-276 or tantalum electrode).
ATEX
ATEX Ex d IIC T6 (optional), suitable for Zone 1/2 hazardous areas.
CSA/FM certification (applicable to the North American market).
4、 Functional characteristics
Self diagnosis and alarm
Air traffic control detection, electrode contamination alarm, excitation disconnection detection (output status code through HART protocol).
Flow upper and lower limit alarm (programmable setting).
Installation adaptability
Horizontal/vertical installation (vertical installation must ensure full pipe).
Requirements for front and rear straight pipe sections: front 5D/back 2D (D is the pipe diameter, optimized to reach front 3D/back 1D).
Calibration and traceability
Factory calibration: Based on aqueous media, provide NIST traceability certificate.
On site calibration: Supports zero calibration and small signal cutoff adjustment of HART handheld devices.
5、 Selection and ordering suggestions
Confirmation of key parameters
Confirm the conductivity of the medium (≥ 5 μ S/cm, low-frequency excitation model should be selected for low conductivity media).
Confirm the pipe diameter (the “025” in FEP321-025A may correspond to DN25 and needs to be verified).
Confirm the process temperature and pressure (choose appropriate lining and electrode materials).
Example of ordering code
Sensor: FEP321-025A (DN25, PTFE lining, 316L electrode).
Transmitter: FEP900-A (with HART, IP66 protection).
Cable: FEP-CABLE-50M (50 meter extension cable).
6、 Application scenarios
Chemical industry: Acid and alkali solution metering (resistant to PTFE lining and Hastelloy electrodes).
Water treatment: Raw water/wastewater flow monitoring (wide range ratio and anti pollution design).
Food and beverage: CIP cleaning flow control (compliant with FDA material requirements, optional sanitary connection).