ABB發(fā)布新一代張力水平傳感器，這是ABB將南非工廠超聲波生產(chǎn)線轉(zhuǎn)至上?？禈蚬S后所生產(chǎn)的首款超聲波物位產(chǎn)品，幫助客戶節(jié)省安裝時間，易于維護(hù)，可用于絕大多數(shù)苛刻工況。
LST400是一款可測量液體和固體物位的超聲波物位變送器，其最大量程為50 ft./15m，也可應(yīng)用于明渠流量測量。它擁有單通道4-20 mADC模擬輸出和HART 7數(shù)字通訊，以及5個繼電器輸出。點(diǎn)陣LCD顯示，集成分析軟件，泵循環(huán)及監(jiān)控，遠(yuǎn)程計數(shù)輸出，增益和功率可自動變化，適用于各種應(yīng)用環(huán)境。
該產(chǎn)品原理是變送器的微處理器發(fā)射電子脈沖給超聲波傳感器，同時啟動記時器。傳感器將該電脈沖轉(zhuǎn)成一個聲脈沖，向被測介質(zhì)的表面發(fā)射。當(dāng)聲脈沖傳播到介質(zhì)表面后能量被反射回傳感器，傳感器將此能量還原成為電脈沖。再將該脈沖返回至微處理器，微處理器停止計時器，同時得到聲波信號自發(fā)射到返回的時間。根據(jù)脈沖運(yùn)行時間間隔和空氣中聲音的傳播速度，微處理器能精確地計算出介質(zhì)的物位。先進(jìn)的的軟件可排除虛假回波，同時電子濾波器可排除環(huán)境噪聲。
LST400超聲波液位/明渠流量變送器可以安裝在料倉或罐體的頂部，對準(zhǔn)被測介質(zhì)進(jìn)行物位檢測。應(yīng)用于各種液位測量，包括蓄水池，量程適中的固位例如裝載和裝袋料斗、礦物油以及V型槽、 斜槽 、堰結(jié)構(gòu)的明渠流量測量。其可選件包括適用于液體和固體的傳感器，電纜長度包括10米、20米、30米、40米或50米，以及瞄準(zhǔn)附件。 ABB測量產(chǎn)品部是由儀器儀表，氣體分析儀器和力測量產(chǎn)品三個業(yè)務(wù)單元組成，集合了眾多著名品牌的產(chǎn)品系列和經(jīng)驗(yàn)積累，已經(jīng)成長為世界最大的儀器儀表及力測量產(chǎn)品供應(yīng)商之一。其產(chǎn)品廣泛應(yīng)用于電力、石油和天然氣、化工和石化、制漿和造紙、金屬和采礦、水與廢水處理、食品與飲料、制藥等各大重要領(lǐng)域。
ABB released a new generation of tension level sensor, which is the first ultrasonic level product produced by ABB after transferring the ultrasonic production line from the South African factory to the Shanghai Kangqiao factory. It helps customers save installation time, is easy to maintain, and can be used in most harsh working conditions.
Lst400 is an ultrasonic level transmitter that can measure liquid and solid levels. Its maximum range is 50 ft./15m, and it can also be used for open channel flow measurement. It has a single channel 4-20 mADC analog output and Hart 7 digital communication, as well as five relay outputs. Dot matrix LCD display, integrated analysis software, pump circulation and monitoring, remote counting output, gain and power can change automatically, suitable for various application environments.
The principle of this product is that the microprocessor of the transmitter sends electronic pulses to the ultrasonic sensor and starts the timer at the same time. The sensor converts the electric pulse into an acoustic pulse and emits it to the surface of the measured medium. When the acoustic pulse propagates to the surface of the medium, the energy is reflected back to the sensor, and the sensor restores this energy into an electrical pulse. Then the pulse is returned to the microprocessor, which stops the timer and obtains the time from the transmission of the acoustic signal to the return. According to the time interval of pulse operation and the propagation speed of sound in the air, the microprocessor can accurately calculate the material level of the medium. Advanced software can eliminate false echoes, while electronic filters can eliminate environmental noise.Lst400 ultrasonic liquid level / open channel flow transmitter can be installed on the top of the silo or tank to align with the measured medium for level detection. It is applied to all kinds of liquid level measurement, including reservoir, retention with moderate range, such as open channel flow measurement of loading and bagging hopper, mineral oil and V-groove, chute and weir structure. Its options include sensors for liquids and solids, cable lengths of 10 meters, 20 meters, 30 meters, 40 meters or 50 meters, and aiming accessories. ABB measurement products department is composed of three business units: instruments, gas analysis instruments and force measurement products. It integrates the product series and experience accumulation of many famous brands, and has grown into one of the world's largest suppliers of instruments and force measurement products. Its products are widely used in power, oil and natural gas, chemical and petrochemical, pulp and paper, metal and mining, water and wastewater treatment, food and beverage, pharmaceutical and other important fields.
