一、进口超低温质量流量计概述
液氧、液氮、液氩等极低温液体的流量测量。在超低温环境下,常规的流量计可能会遇到一些挑战,如温度传感器的失效、流体凝固或冻结等问题。超低温质量流量计通过采用特殊的材料和技术,以及采取适当的绝缘和保温措施,解决了这些问题。
VTON系列质量流量计采用低温科氏力传感器,具有耐低温、精度高、重复性好等特点,提供可靠的、精确的质量流量、体积流量、温度、密度等参量值。
专为液化天然气(LNG)加气机开发的科里奥利质量流量计,即使在极低的过程温度–196 °C (–321 °F)下,也能保证最高的精度和稳定性。由于使用了极其紧凑的设计结构,此设备可以安装在任何地方,即使是最狭小的空间。无可动部件,无需维护。
Flow measurement of extremely low temperature liquids such as liquid oxygen, liquid nitrogen, and liquid argon. In ultra-low temperature environments, conventional flow meters may encounter challenges such as temperature sensor failure, fluid solidification or freezing, etc. The ultra-low temperature mass flowmeter solves these problems by using special materials and technologies, as well as taking appropriate insulation and thermal insulation measures.
The VTON series mass flowmeter adopts low-temperature Coriolis force sensors, which have the characteristics of low temperature resistance, high accuracy, and good repeatability, providing reliable and accurate parameter values such as mass flow rate, volume flow rate, temperature, density, etc.
The Coriolis mass flowmeter developed specifically for liquefied natural gas (LNG) dispensers ensures the highest accuracy and stability even at extremely low process temperatures of -196 ° C (-321 ° F). Due to its extremely compact design structure, this device can be installed anywhere, even in the smallest spaces. No movable parts, no maintenance required.
二、进口超低温质量流量计性能参数
质量流量测量准确度等级:0.5级 | 质量流量测量重复性:1/2(准确度) | |
密度测量范围:(0.2~3.0)g/cm³ | 密度测量准确度:±0.001g/cm³ | |
温度测量范围:-198℃~+450℃ | 温度测量准确度:±0.5℃ | |
公称压力:≤4MPa(高压可定制) | 公称通径:DN10~DN300 | |
测量介质:气体 | 接液部件材质:304、304L、316L、C22、钛、钽、锆 | |
环境温度:-30℃~+55℃ | 环境湿度:5%~95% | |
工作电压:DC24V或AC220V(智能电源,交直流通用) | 输出信号:频率(0~10)kHz、电流(4~20)mA | |
通讯协议:HART、MODBUS、FF、PROFIBUS-DP/PA | 测量管形式:U形管或微弯管 | |
防爆等级:Ex ib IIC T6 Gb | 防护等级:IP67 | |
量程比:15:1 | 制造标准:VTON |
三、超低温质量流量计的主要特点和优势
1、适应极低温:超低温质量流量计能够在极低温条件下正常工作,测量液体的质量流量,如液氧、液氮等。
2、材料选择:超低温质量流量计采用耐低温材料,如低温合金、不锈钢等,能够承受极低温环境下的腐蚀和应力。
3、保温措施:超低温质量流量计通常配备保温层和绝缘材料,以减少热量损失和温度变化,确保测量的准确性。
4、温度传感器:超低温质量流量计采用专门设计的温度传感器,能够在极低温下准确测量流体的温度,并进行温度补偿,提高测量的准确性。
5、测量稳定性:超低温质量流量计具有较高的测量稳定性,能够在低温环境下提供稳定和可靠的流量测量结果。
1. Adapting to extremely low temperatures: Ultra low temperature mass flow meters can operate normally under extremely low temperature conditions, measuring the mass flow rate of liquids such as liquid oxygen, liquid nitrogen, etc.
2. Material selection: The ultra-low temperature mass flowmeter adopts low-temperature resistant materials such as low-temperature alloys, stainless steel, etc., which can withstand corrosion and stress in extremely low temperature environments.
3. Insulation measures: Ultra low temperature mass flow meters are usually equipped with insulation layers and insulation materials to reduce heat loss and temperature changes, ensuring measurement accuracy.
4. Temperature sensor: The ultra-low temperature mass flowmeter adopts a specially designed temperature sensor, which can accurately measure the temperature of the fluid at extremely low temperatures and perform temperature compensation to improve the accuracy of the measurement.
5. Measurement stability: Ultra low temperature mass flow meters have high measurement stability and can provide stable and reliable flow measurement results in low temperature environments.
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