超音波式ガス漏洩検知器について
超音波式ガス漏洩検知器について
超音波式ガス漏洩検知では、プロセス環境内での人間の聴覚では聞き取ることができないノイズの変動を捕らえるために音響センサが使用されます。 センサと電子機器は、可聴な周波数 (0~25KHz) を除く、超音波周波数 (25~100KHz) を検知することができます。 蓄積されたガスを測定する従来のガス検知器と異なり、超音波ガス検出器は、漏洩を「聞く」ことにより、早期の警告システムを起動します。
The latest ultrasonic sensing technologies use a resonant sensor vs. traditional technology using a moving metal diaphragm (microphone). The active sensor element is a piezo-electric material (which converts mechanical deformation into electrical voltage) embedded in a ceramic medium. The sensors have an extremely high chemical resistance and a wide frequency range response band. The ultrasonic gas leak detector can be mounted in any orientation. Its sensor design has no moving parts so wear and tear is completely eliminated.
The Rosemount Incus Ultrasonic Gas Leak Detector is equipped with four of these piezo-electric sensors, covering a maximum range of 131.2 ft (40 m) radius from the detector. Each ultrasonic gas leak detector leaves the factory calibrated for life and will never expire. There is no zeroing or calibration required and no consumptive sensor elements to replace, ever.
Ultrasonic gas leak detection technology constantly monitors wide areas with advanced acoustic sensors specially tuned to process ultrasound emitted from pressurized gas leaks. Ultrasonic gas leak detectors don't wait until a hazardous gas concentration has accumulated or the gas cloud has made physical contact with a gas sensor. The response time is instantaneous for all gas types. Since ultrasonic gas leak detectors are immune to poisoning, they never require field calibration, and all intermittent sources of background ultrasound noises may be ignored by time delay settings.