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參數(shù)資料
| 型號： | QT114-S |
| 英文描述： | IC-SMD-QPROX SENSOR |
| 中文描述： | 集成電路表面貼裝，量研傳感器 |
| 文件頁數(shù)： | 7/12頁 |
| 文件大小： | 310K |
| 代理商： | QT114-S |
Spiral wire probes have the disadvantage of not being as
rugged as a solid disc probe.
2.2.3 SIDE-ENTRY PROBES
Another type is a side-entry probe (Figure 2-8), which
requires an entry point into the vessel wall, but may have the
advantage of accessibility in certain cases. These can be
made of simple metal rod, insulated in almost any plastic if
required.
2.2.4 COAXIAL PROBES
Another type of internal probe is the coaxial probe (Figure
2-10); these are most useful with oils or similar fluids having
a low dielectric constant; the inner rod is connected to the
signal connection, and together with the outer grounded
cylinder forms a capacitor whose dielectric is either air or oil.
Keeping the gap between rod and cylinder to a minimum
increases the 'gain' of the electrode.
Coaxial probes are more expensive to make, and can have
problems with vibration if they are not constructed robustly.
The outer cylinder should be perforated at key spots to allow
fluid to fill and drain the cavity without trapping air bubbles
inside. The outer cylinder can also be made of a wire mesh.
The outer cylinder does not have to be coated in plastic,
even when used with water-based fluids. When used with
oils, the inner rod does not require insulation either.
2.2.5 BARE METAL PROBES
Bare metal internal probes can be used, for example with
nonconductive fluids like oils, without difficulty. This applies
to all probe types described above.
Bare probes can also be used with aqueous fluids, but in
these cases a 1,000pF (1nF) ceramic NPO capacitor should
be inserted between the probe and the QT114 to block DC
current flows.
A bare internal probe used with conductive fluids and an
in-line blocking capacitor will generate a huge, robust
capacitive response that will not readily permit the use of a
2-level probe due to signal saturation. Even the slightest
amount of bare metal exposed to the fluid will usually
generate an immediate, large response with aqueous fluids.
- 4 -
Figure 2-7 Twin-Level Internal Spiral Wire Probe
T
2
Figure 2-6 Twin-Level Internal Planar Probe
T
2
Figure 2-5 Single Level Internal Spiral Wire Probe
Figure 2-4 Single Level Internal Planar Probe
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| QT12C-SERIES | Peripheral IC |
| QT12E-SERIES | Peripheral IC |
| QT12HC-SERIES | Peripheral IC |
| QT12T-SERIES | Peripheral IC |
| QT14C-SERIES | Peripheral IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| QT115 | 制造商:QUANTUM 制造商全稱:QUANTUM 功能描述:QT 11x Series Variations |
| QT115A-ISG | 功能描述:接口 - 專用 Integrated Circuit RoHS:否 制造商:Texas Instruments 產(chǎn)品類型:1080p60 Image Sensor Receiver 工作電源電壓:1.8 V 電源電流:89 mA 最大功率耗散: 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:BGA-59 |
| QT115-D | 功能描述:SENSOR IC TOUCH/PROXMTY 1CH 8DIP RoHS:否 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 觸摸屏控制器 系列:QProx™ 標準包裝:96 系列:- 類型:- 觸摸面板接口:- 輸入數(shù)/鍵:- 分辨率（位）:- 評估套件:* 數(shù)據(jù)接口:- 數(shù)據(jù)速率/采樣率 (SPS，BPS):- 電壓基準:- 電源電壓:- 電流 - 電源:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| QT115-DG | 制造商:Quantum Corp 功能描述:IC QPROX SENSOR DIP8 115 |
| QT115G1A-ISG | 功能描述:板機接口移動感應器和位置傳感器 INTEGRATED-CIRCUIT RoHS:否 制造商:Panasonic Electric Works 封裝 / 箱體:TO-5 感應距離:3 m 輸出類型:Digital 電源電壓-最大:6 V 電源電壓-最小:2.3 V 電源電流: 最大工作溫度:+ 60 C 封裝:Bulk |
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