描述
GE GF868是GE基础设施集团传感与测量部门生产的火炬气超声波质量流量计，主要用于测量火炬气和排放气体，可检测与防止泄漏带来的损失。GF868-1-2-1-2-1-B-1-4-0-0-0-CC-RPT可能是其具体配置或版本的型号，以下是GF868的产品详情：
测量原理：采用受专利保护的互相关时差技术（Correlation Transit-Time™），通过安装于管线上的全金属超声传感器向气体顺流和逆流发射声脉冲，根据顺流和逆流声传播时间差计算流速、体积流量和质量流量。
性能参数：
流速范围：可测流速范围为-84m/s至84m/s，精度一般为读数的±1%至±2%，重复性为读数的±0.2%至±0.5%。
量程比：量程比高达2750:1。
管线尺寸：适用管线尺寸为50mm至3m，或更大。
测量参数：可测量质量流量、标准流量、实际流量、累计流量和流速，还能测量即时的平均分子量。
产品特点：
适用范围广：适合多组份及组份变化的气体测量，可测量碳氢气体，能适应含杂质与潮湿气体，无可动部件、无开孔与导管，无需日常维护。
功能多样：内置累加器，还可为温度、压力变送器供电。
显示与操作：配备2个独立的软件设置的64×128像素LCD图像显示器，39键触觉反馈膜键盘，操作方便，显示清晰。
硬件规格：
外壳：标准外壳为铝制，环氧树脂涂层，防护等级达NEMA 4X IP66 Class I,Div.2,Groups A,B,C,D。可选不锈钢、玻璃钢或防爆外壳。
尺寸重量：标准尺寸约为362×290×130mm，重量约5kg。
供电：标准供电为100-130VAC，50/60Hz或200-265VAC，50/60Hz；也可选12-28VDC，±5%，功耗≤20W。
输入输出：标准配置有两路隔离的0/4-20mA输出，最大负载550Ω。另有六个插槽可供输入/输出板组合，最多可选3块模拟输出板，每块4路隔离输出，0/4-20mA，最大负载1kΩ；最多可选3块模拟输入板。
工作条件：操作温度为-20℃至55℃，储存温度为-55℃至75℃。
The GE GF868 is a flare gas ultrasonic mass flowmeter manufactured by GE Infrastructure’s Sensing&Measurement division.It’s primarily used to measure flare and exhaust gases,helping detect and prevent leaks and losses.The model number GF868-1-2-1-2-1-B-1-4-0-0-0-CC-RPT may refer to a specific configuration or version.Below are product details for the GF868:
Measurement Principle:Utilizing patented Correlation Transit-Time™technology,an all-metal ultrasonic transducer installed in the pipeline transmits acoustic pulses upstream and downstream of the gas flow.The difference in acoustic propagation time between upstream and downstream is used to calculate flow velocity,volume flow,and mass flow.
Performance Parameters:
Flow Velocity Range:Measurable velocity range is-84 m/s to 84 m/s,with typical accuracy of±1%to±2%of reading and repeatability of±0.2%to±0.5%of reading.
Turndown:Turndown ratio is as high as 2750:1.Pipeline Size:Suitable for pipelines from 50mm to 3m or larger.
Measurement Parameters:Measure mass flow,standard flow,actual flow,accumulated flow,and flow velocity,as well as real-time average molecular weight.
Features:
Wide Application:Suitable for measuring multi-component gases and gases with varying composition,including hydrocarbon gases,and gases containing impurities and moisture.No moving parts,openings,or conduits,requiring no routine maintenance.
Versatile:Built-in totalizer and power supply for temperature and pressure transmitters.
Display and Operation:Equipped with two independent,software-configurable 64×128 pixel LCD displays and a 39-key tactile feedback membrane keypad for easy operation and clear display.
Hardware Specifications:
Enclosure:The standard enclosure is epoxy-coated aluminum with a NEMA 4X IP66 Class I,Div.2,Groups A,B,C,and D rating.Stainless steel,fiberglass,or explosion-proof enclosures are available.Dimensions and Weight:Standard dimensions are approximately 362×290×130 mm,and weighs approximately 5 kg.
Power Supply:Standard power supply is 100–130 VAC,50/60 Hz or 200–265 VAC,50/60 Hz;12–28 VDC,±5%is also optional.Power consumption is≤20 W.
Input/Output:Standard configuration includes two isolated 0/4–20 mA outputs with a maximum load of 550Ω.Six additional slots are available for I/O board combinations,allowing for up to three analog output boards,each with four isolated 0/4–20 mA outputs and a maximum load of 1 kΩ;and up to three analog input boards.
Operating Conditions:Operating temperature range:-20°C to 55°C;storage temperature range:-55°C to 75°C.
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
