Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding ... Caution:Do not place your finger over the vent(it pressurizes the sensor) to test the flow indicator when gas is flowing to the sensor.removing your finger (the restriction) generates a vacuum on the sensor and maydamage the sensor(voiding the sensor warraty).
Positive pressure applications:
If the sample pressure is greater than 30 psign an external pressure regulator(optional) is required upsteram of the analyzer to control of sample flow.a pressure regulator with a metallic diaphragm is recommended to prevent high oxygen reading that cuold result from the use of diaphragms constructed of more gas permeable materisls.
If other optionoal sample system components such as coiled metal tubing(samples must be colled to at least 35-40℃ for continuous use)，coalescing filters ，scrubbers，etc.are required install the pressure rugulator after the coiled tubing and bofore the other components and the analyzer.a scrubber requires a flow valve upstream for optimum efficiency and response time and that the analyzer flow valve is opened completely.
Atmospheric or slightly negative pressure applications:
For accurate high ppb and/or low ppm range measurements，an optional simple pump is required downstream of the analyzer to draw the sample through the analyzer.The cacuum drawn on the analyzer and sensor should not exceed 4”of water.
Caution:Use ofpump downstream of the sensor requires the floe control valve upstream of the sensor be completely opened to avoid drawing ercessive vacuum in the sensor，which can damage the sensor.
If pump over-loading(due to the limitation of low flow rate of the sample gas)is a comsideration，a second throttle valve on the pump’s inlet side may be necessary to provide a bypass path，as illustrated below，to prevent the pump from over-loading and over-heating while miantaining the required sample flow rate within the above-mentioned parameters
意：不要覆盖在发泄你的手指（它加压感应器），测试时，气体的流量指标是流向sensor.removing手指（限制）生成一个传感器上的真空和maydamage传感器（传感器排尿warraty）。
正压应用：
如果样品的压力大于30 psign外部压力调节器（可选）是必需的分析仪对样品flow.a upsteram压力调节器控制的金属膜片可预防高氧阅读，从隔膜使用cuold结果建造更多的气体渗透性，施工性能优异。
如果其他optionoal采样系统组件，如连续金属管材（样品必须colled至少连续使用35-40℃），聚结过滤器，洗涤器，安装等作了规定后，连续油管压力rugulator和bofore的其他组成部分和analyzer.a洗涤要求上游获得Z佳效率和响应时间和流量阀流量阀的分析完全打开。
大气压力或轻微负应用：
对于高精确ppb和/或低ppm的范围测量，可选简单泵是需要分析仪下游提请通过分析仪和传感器结论应该不超过4的水“的analyzer.The cacuum样本。
注意：使用ofpump传感器的下游要求上游浮冰控制阀，传感器是完全开放，以避免绘图传感器ercessive真空状态，这可能会损坏传感器。
如果泵过负荷（由于该样本中低流量限制）是一个若干思考，对泵的进气侧第二节流阀可能需要提供一个旁路路径，如下所示，以防止泵从超载和过度加热而miantaining在上述所要求的采样量
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