1特點
1.1反應時間快至亞毫秒( 0.65msec )
1.2檢測*限低至十億分之一(50ppb)
1.3頻率反應達至330Hz
1.4便攜式傳感器
2. 監(jiān)測氣體的輸送對您的嗅覺研究起了什么作用?
究竟氣味是在什么濃度和時間點進入您目標接收器? 這些未經(jīng)證實的參數(shù)可以讓您采集的數(shù)據(jù)更加有份量和值得信賴嗎? Aurora Scientific Inc.的小型光離子檢測器
(200BminiPID) 擁有市場上檢測率*快的氣體傳感器，能夠在嗅覺實驗中準確地監(jiān)察氣體到達接受器的時間點和氣體的濃度變化。200BminiPID也可以用於檢測羽狀流。
氣味傳感器可以偵察電離能低於10.6eV的分子。這使檢測過程不會受到大多數(shù)的長久氣體影響(例
如是一些空氣的成份:
氮，氧，二氧化碳，氬等等)，因為長久氣體的電離能通常高於10.6eV 。因此在受控的實驗環(huán)境下，只有感興趣的氣體會被檢測到。
便攜式的小型傳感器方便於配合現(xiàn)有的實驗設備去使用，同時也非常堅固，可以利用於風洞實驗。
傳感器可以配合不同的數(shù)據(jù)采集系統(tǒng)，如有需要，Aurora Scientific Inc. 也可以提供完整的數(shù)據(jù)采集
系統(tǒng)。
3 各種應用:
3.1監(jiān)察羽狀流
3.2監(jiān)察目標氣體的輸送和濃度
3.3氣味混合*佳化
3.4測定進入目標接收器或?qū)嶒炏到y(tǒng)的氣體實際濃度
請聯(lián)絡Aurora
Scientific Inc. 以查詢可進行檢測的氣體種類。同時也可以讓我們有機會跟您介
紹200BminiPID在嗅覺研究上做出的各種突破。
詳述:
?檢測器技術:光化電離作用， 配合10.6eV 射頻激勵無電本放電管
?頻率反應:330Hz(@the
-3 dB point)
?檢測*限:
50ppb (丙烯)
?操作濃度范圍:低增益0 - 1000ppm 的,中增益：0- 200 ppm 時，高增益：0 - 40 ppm 的。
?精度：5.0％（全部增益范圍）。
?采樣率：1.1升/分鐘。
?運作濕度范圍：0
?100 ％RH（無冷凝）。
?運作溫度范圍：32°F至105°F （0°C至40°C）。
尺寸：
? 傳感器頭：3.0”(7.6 厘米)長，2.0”（5.1 厘米）寬， 1.0” （2.5 厘米）厚。
?控制器：5.25”（13.3厘米）長， 5.25” （13.3 厘米）寬，2” （5.1 厘米）高。
重量：
?傳感器頭：0.38磅（ 0.17 公斤）。
?控制器：1.47磅（0.67公斤）。
電源：110/220VAC，50/60赫茲。
The 200B miniPID photo-ionization detector combines small size, fast response, and high sensitivity in an easy-to-use, competitively priced package. Designed for olfaction experiments, the sensor has a true frequency response of 330 Hz with a rise time of 0.6 msec. The detection limit is 100 ppb (parts per billion) propylene in air and the full-scale measurement range is 500 ppm.
The miniPID has been used successfully for numerous olfaction studies involving mice, rats, Drosophila, moths, mosquitos and ants. Researchers and manufacturers have also been using the miniPID to characterize olfactometers.
The sensor head contains the detection cell, electrometer, RF-excited UV lamp and lamp control circuitry. The easy-to-use controller has switches for instrument power, pump speed and gain, and a control for setting the zero. LEDs provide indication of power, pump, and lamp status. A front-panel display provides fast-response indication of the output signal from the sensor.
201A: Portable, Battery Powered miniPID Sensor
Portable, battery powered miniPID sensor ideal for use on moving platforms such as robots
Sensor
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compact (sensor head measures 1″ x 2″ x 3″)
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fast response – 330 Hz (0.6 m sec rise time)
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low detection limit – 100 ppb (propylene in air)
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high Signal-to-Noise Ratio
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ease of use – utilizes RF-excited UV lamp
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robust
Controller
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simple analog output (0 – 10V)
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real-time bar-graph display with off-scale indicators
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built-in anti-aliasing filter (6th order, 1 kHz, Butterworth)
Optional Support Equipment
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calibration kit
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data acquisition system
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tracer gas release system
應用案例
200B – Modeling Insect Pheromone Tracking
CHALLENGE
In 2008 Dr. Willis from Case Western Reserve University wanted to use mobile wheeled robots to serve as hardware models to test hypotheses on how insects control their odor tracking behavior. He had done work with small 2D robots in the wind tunnel but now wanted to move to the unpredictable real world environments outdoors. For this work he required two fast response gas sensors that were small enough to mount on the robot. The sensors also had to be battery operated as the robot would not be tethered.
SOLUTION
Aurora Scientific’s R&D team knew that the miniPID sensor head met most of Dr. Willis’ requirements but the controller was too large, too heavy and required AC power. A new battery powered controller was designed that was small and light enough to be deployed on the robot. The new controller was powered by two NiMH batteries which provided about 2 hours of continuous operation. Changes were also made to the sensor to allow it to be easily mounted to the robot. This involved removing the long mounting rod, removing the sensor connector and replacing it with a short length of wires that plugged directly into the controllers. The cover on the side of the sensor head was also modified to provide a simple clamp mechanism for holding the sensor onto the robot.
RESULTS
Two sensors were built and supplied to Dr. Willis. Our modifications allowed them to be securely mounted on the robot and preliminary tests were conducted. In 2014 Dr. Willis reported that the battery powered controllers were failing and asked for them to be repaired. We took this opportunity to redesign and repackage the controllers and to also redesign the battery packs. We supplied him with two instruments of the new design. The new design uses Lithium-ion batteries which are smaller, lighter and last about twice as long, which have provided Dr. Willis with reliable and portable equipment to model insect pheromone tracking in real world environments. In addition, the new design is now available as the model 201A portable miniPID.