FMU30-10A1超声波液位计是Endress+Hauser（E+H）公司生产的一款高性能液位测量设备，适用于液体、浆料、淤泥和固体块料的连续性、非接触物位测量。

一、产品特点

非接触式测量：采用超声波技术，无需与介质直接接触，适用于腐蚀性、高温或高压环境。

高精度测量：分辨率可达量程的0.1%或4mm，测量精度为±0.3%。

宽测量范围：支持5米、8米、10米、15米、20米等多种量程选择，满足不同应用需求。

多种输出信号：支持4-20mA、HART、RS485 Modbus等信号输出，方便与DCS、PLC等系统集成。

防爆设计：防爆等级为Ex d ⅡC T6 Gb，适用于爆炸危险区域。

耐高温高压：工作温度范围为-60℃至+200℃，工作压力可达0.3MPa。

自诊断功能：具备现场包络线显示和按键操作，可快速进行故障诊断。

二、技术参数

电源：两线制DC24V/四线制DC24V/AC220V。

输出负载：0-500欧姆。

分辨率：量程的0.1%或4mm。

工作频率：41KHz。

介质温度：-40℃至+250℃。

过程温度：标准型-40℃至+130℃，高温型-40℃至+200℃。

外壳材质：铝单腔/铝双腔/塑料/不锈钢单腔。

连接方式：螺纹G1½或1½NPT以上均可安装。

显示与操作：四行纯文本显示，7种语言可选，菜单引导式现场操作。

三、应用领域

化工：反应釜、储罐、缓冲罐的液位监测。

环保：废水处理厂、污水处理池的液位控制。

食品/农产品：液体存储容器的液位测量。

能源：石油、天然气行业的储罐液位监测。

制药：卫生型液体存储容器的液位控制。

四、安装与维护

安装位置：选择无障碍物、与液位测量目标正对的位置，确保传感器水平对齐介质表面。

连接电缆：将连接电缆穿过预留的电缆穿孔，按照正确的接线顺序插入接线端子。

供电：将供电电缆按照正确的接线顺序插入供电接线端子。

调试：打开液位显示控制系统，检查液位计是否正常工作，根据使用说明书进行调试。

维护：定期清洁传感器表面，避免介质黏附影响测量精度。

五、常见故障及解决方案

无信号输出：检查电源连接，确保电压稳定；更换传感器；检查并修复信号线缆。

输出信号波动大：减少液体表面的波动，如增加挡板；清洁传感器表面；调整传感器与液体表面的距离。

测量误差大：重新调整传感器的安装角度；根据液体介质的特性重新设置声速；清洁传感器表面，去除气泡或固体颗粒。

显示屏乱码或不显示：更换显示屏；检查并修复内部电路。

The FMU30-10A ultrasonic level gauge is a high-performance level measurement device produced by Endress+Hauser (E+H) company, suitable for continuous, non-contact level measurement of liquids, slurries, sludge, and solid blocks.

CHARACTERISTICS

Non contact measurement: using ultrasonic technology, without direct contact with the medium, suitable for corrosive, high temperature or high pressure environments.

High precision measurement: The resolution can reach 0.1% or 4mm of the measuring range, and the measurement accuracy is ± 0.3%.

Wide measurement range: supports multiple range options such as 5 meters, 8 meters, 10 meters, 15 meters, 20 meters, etc., to meet different application needs.

Multiple output signals: Supports 4-20mA, HART, RS485 Modbus and other signal outputs, making it easy to integrate with DCS, PLC and other systems.

Explosion proof design: The explosion-proof rating is Ex d Ⅱ C T6 Gb, suitable for explosive hazardous areas.

High temperature and high pressure resistance: The working temperature range is -60 ℃ to+200 ℃, and the working pressure can reach 0.3MPa.

Self diagnostic function: With on-site envelope display and button operation, it can quickly diagnose faults.

2、 Technical parameters

Power supply: Two wire system DC24V/four wire system DC24V/AC220V.

Output load: 0-500 ohms.

Resolution: 0.1% of the measuring range or 4mm.

Operating frequency: 41KHz.

Medium temperature: -40 ℃ to+250 ℃.

Process temperature: Standard type -40 ℃ to+130 ℃, high temperature type -40 ℃ to+200 ℃.

Shell material: aluminum single cavity/aluminum double cavity/plastic/stainless steel single cavity.

Connection method: Installation can be done with threads G1 half or 1 half NPT or above.

Display and operation: Four line pure text display, 7 language options, menu guided on-site operation.

3、 Application Fields

Chemical industry: liquid level monitoring of reaction vessels, storage tanks, and buffer tanks.

Environmental protection: Level control of wastewater treatment plants and sewage treatment tanks.

Food/agricultural products: liquid level measurement of liquid storage containers.

Energy: Tank level monitoring in the oil and gas industry.

Pharmaceutical: Level control of sanitary liquid storage containers.

4、 Installation and maintenance

Installation position: ｓｅｌｅｃｔ a position that is unobstructed and directly facing the liquid level measurement target, ensuring that the sensor is horizontally aligned with the surface of the medium.

Connecting cables: Thread the connecting cables through the reserved cable holes and ｉｎｓｅｒｔ them into the wiring terminals in the correct wiring sequence.

Power supply: ｉｎｓｅｒｔ the power supply cable into the power supply terminal in the correct wiring sequence.

Debugging: Open the liquid level display control system, check if the liquid level gauge is working properly, and debug according to the user manual.

Maintenance: Regularly clean the surface of the sensor to avoid medium adhesion affecting measurement accuracy.

5、 Common faults and solutions

No signal output: Check the power connection to ensure stable voltage; ｒｅｐｌａｃｅ the sensor; Check and repair the signal cable.

Large output signal fluctuations: reduce surface fluctuations of the liquid, such as adding baffles; Clean the surface of the sensor; Adjust the distance between the sensor and the liquid surface.

Large measurement error: readjust the installation angle of the sensor; Reset the sound velocity based on the characteristics of the liquid medium; Clean the surface of the sensor to remove bubbles or solid particles.

Display screen garbled or not displaying: ｒｅｐｌａｃｅ the display screen; Check and repair the internal circuit.