Sensirion SLQ-HC60 質(zhì)量流量計(jì)

Sensirion SLQ-HC60 質(zhì)量流量計(jì)

納米和微流量測量的精確度實(shí)驗(yàn)室應(yīng)用

分辨率可達(dá)500 PL/分鐘

響應(yīng)時(shí)間<50毫秒

這些液體質(zhì)量流量計(jì)可以極其快速和精確的測量超低液體質(zhì)量流量，并與總的介質(zhì)隔離，非常小的死體積和沒有運(yùn)動(dòng)部件進(jìn)行操作。該流量計(jì)檢測到液體的質(zhì)量流量，通過測量通過玻璃毛細(xì)管的管材料的熱傳遞。在毛細(xì)管外的微芯片上的熱優(yōu)化膜的發(fā)熱電阻保持高于環(huán)境溫度。在毛細(xì)管內(nèi)液體流動(dòng)的情況下，溫度分布的上游和下游被干擾，這種差異進(jìn)行測量。 CMOSens?sensor技術(shù)結(jié)合了數(shù)字信號處理在一個(gè)CMOS芯片高精度的熱傳感器元件。此外，數(shù)字智能CMOSens傳感器技術(shù)使數(shù)字與pc機(jī)、PLC等控制器易于連接數(shù)字接口。

所有的測量數(shù)據(jù)完全校準(zhǔn)，并通過內(nèi)部的微控制器來進(jìn)行溫度補(bǔ)償。優(yōu)良的耐化學(xué)性和生物相容性得到保障，并且處理介質(zhì)只獲取與所述直傳感器的毛細(xì)管接觸。典型應(yīng)用該傳感器包括精確的液體的質(zhì)量流量和體積測量分析儀器，醫(yī)療設(shè)備和工藝控制。型號32611-00至-08校準(zhǔn)的只有水，優(yōu)越的可重復(fù)性測量信號仍維持其他媒體，從而使得在計(jì)算機(jī)或微控制器上后測量校正。模型32611-10被校準(zhǔn)為IPA，但也可以用于其它烴類，如乙醇，丙酮，柴油，石油，醚和大多數(shù)其他媒體的可重復(fù)的測量結(jié)果，但是它不與水溶液工作。

Nano-and micro-flow measurements for precision laboratory applications

Resolutions down to 500 pL/min

Response time < 50 ms

These liquid mass flowmeters enable extremely fast and accurate measurements of ultra-low liquid mass flows, and operate with total media isolation, very little dead volume, and no moving parts. The flowmeter detects liquid mass flow by measuring heat transfer through the tubing material of a glass capillary. On a microchip outside the capillary, a heating resistor on a thermally optimized membrane is kept above ambient temperature. In the presence of liquid flow inside the capillary, the temperature distribution upstream and downstream is disturbed—this difference is then measured. CMOSens^?sensor technology combines a high-precision thermal sensor element with digital signal processing on one single CMOS chip. In addition, the digital intelligence of the CMOSens sensor technology enables digital interfaces that permit an easy link with PCs, PLC, and other controllers.

All measurement data is fully calibrated and temperature compensated by means of an internal microcontroller. Excellent chemical resistance and bio-compatibility are ensured, and the process medium only gets in contact with the straight sensor capillary. Typical applications for this sensor include precise liquid mass flow and volume measurement for analytical instruments, medical devices, and process control. . Models 32611-00 to -08 are calibrated for water only. Superior repeatability of the measurement signal is still maintained for other media and thus allows after-measurement-correction on a computer or microcontroller. Model 32611-10 is calibrated for IPA only but can also be used for repeatable measurements of other hydrocarbons such as ethanol, acetone, diesel, petroleum, ether, and most other media; however it does not work with aqueous solutions.