Offset high-pressure sensors

Figure 4.1.16 shows the same comparison for the offset of Bosch s high-pressure sensor. 

Fig. 4.1.16 Comparison of measured distribution (left) and results of Monte Carlo simulation (right) for the offset of Bosch s high-pressure sensor (adopted from [27])...

Differential pressure sensors are special pressure sensors with two chambers separated by a membrane. The pressure difference between those two chambers is detected. This setup allows determination of pressure differences significantly smaller than either one of the applied pressures with high accuracy. Fields of application are the pressure losses over certain unit operations such as separation columns or the use of differential pressure to monitor two other process parameters flow and level. The latter applications are discussed in the subsequent chapter. In high-pressure technology, two aspects have to be observed closely. First, the maximum allowable differential pressure of the transducer can easily be exceeded due to high system pressures, thus destroying or offsetting the sensor. Second, fluid... 

Introduction of room-temperature ionic liquids (RTIL) as electrochemical media promises to enhance the utility of fuel-cell-type sensors (Buzzeo et al., 2004). These highly versatile solvents have nearly ideal properties for the realization of fuelcell-type amperometric sensors. Their electrochemical window extends up to 5 V and they have near-zero vapor pressure. There are typically two cations used in RTIL V-dialkyl immidazolium and A-alkyl pyridinium cations. Their properties are controlled mostly by the anion (Table 7.4). The lower diffusion coefficient and lower solubility for some species is offset by the possibility of operation at higher temperatures. 

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