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𝘍𝘭𝘶𝘦𝘚𝘰𝘯𝘪𝘤™ Technology
在实际烟囱条件下准确测量信号传输时间的技术
ENVEA 独特的FlueSonic™ 技术和数学测量算法允许在实际烟囱条件下准确测量信号传输时间，从而对排放数据、报告质量排放(kg/年) 以及浓度监测提供高质量保证。
- 处理扩展测量路径上的流量剖面的能力
- 对污染和流动涡流的耐受性
- 符合QAL 1的欧洲监测标准EN 16911-2和15267-3
工作原理
FlueSonic™ 超声波技术测量两个传感器之间超声波信号的传播时间。
每个传感器发射一个超声波脉冲，其中测量传感器之间沿流动方向发送的超声波信号的飞行时间，并将其与反向脉冲的飞行时间进行比较。脉冲传输时间的差异与烟气速度成正比。测量路径中的烟囱流速根据上游和下游传输时间进行计算，计算方式与气体中的实际声速、烟气温度或烟气成分压力无关。
比较和优点
- 烟囱条件下0-30 m/s全范围内的精度
- 不受烟气成分变化的影响（热质量限制）
- 内置参考材料（适用于QAL 3），无需压缩空气即可挑战皮托管压力传感器
- 无需进行空气净化，以防止灰尘堵塞皮托管
高质量保证特性
ENVEA FlueSonic™ 仪器包括自动参考检查:
- 上下参考（零点和量程）传感器自检，符合EN 16911-2的要求
- 自检不仅评估电子设备和测量算法的性能，还评估传感器的性能和正确操作，包括它们在烟囱环境中传输、接收和区分实际超声波信号与噪声和偏移的能力
- 这些自动质量保证功能提供的输出可用于EN 16911-2中定义的QAL 3报告要求，并向用户提供仪器正确操作的反馈
