- 您现在的位置：买卖IC网 > PDF目录224961 > QT114-D IC-QPROX SENSOR PDF资料下载
参数资料
| 型号： | QT114-D |
| 英文描述： | IC-QPROX SENSOR |
| 中文描述： | 集成电路量研传感器 |
| 文件页数： | 7/12页 |
| 文件大小： | 310K |
| 代理商： | QT114-D |
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
相关PDF资料 |
PDF描述 |
|---|---|
| QT114-S | IC-SMD-QPROX SENSOR |
| QT12C-SERIES | Peripheral IC |
| QT12E-SERIES | Peripheral IC |
| QT12HC-SERIES | Peripheral IC |
| QT12T-SERIES | Peripheral IC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| QT114-DG | 制造商:Quantum Corp 功能描述:IC QPROX SENSOR DIP8 114 |
| QT114-IS | 制造商:Quantum Corp 功能描述:IC QPROX SENSOR SMD SOIC8 114 |
| QT114-ISG | 功能描述:板机接口移动感应器和位置传感器 INTEGRATED-CIRCUIT RoHS:否 制造商:Panasonic Electric Works 封装 / 箱体:TO-5 感应距离:3 m 输出类型:Digital 电源电压-最大:6 V 电源电压-最小:2.3 V 电源电流: 最大工作温度:+ 60 C 封装:Bulk |
| QT114R-SG | 功能描述:板机接口移动感应器和位置传感器 INTEGRATED-CIRCUIT RoHS:否 制造商:Panasonic Electric Works 封装 / 箱体:TO-5 感应距离:3 m 输出类型:Digital 电源电压-最大:6 V 电源电压-最小:2.3 V 电源电流: 最大工作温度:+ 60 C 封装:Bulk |
| QT114-S | 制造商:未知厂家 制造商全称:未知厂家 功能描述:IC-SMD-QPROX SENSOR |
发布紧急采购，3分钟左右您将得到回复。