Moreover, a test device consisted of pressure meter and ohmmeter was designed to investigate the properties of the PPy/C sponge sensor.
Although both meters recorded the timing of pressure changes precisely, there were some differences in the amplitude of the signals.
The narcotic effects of nitrogen begin to occur at a depth of about 30 meters (a pressure of ~3 atm), and increased with depth, with loss of consciousness occurring at depths of about 100 meters [ 18, 19].
Figure 11 shows that about 1.6 sm3 of methane would be released from each standard cubic meter of brine if aquifer pressure dropped from 76 to 43 MPa (verifiable by data in Fig. 4).
Hydrogen permeation characteristics of ternary NiTiNb alloys were investigated using a mass flow meter in the pressure range of 0.2 0.97 MPa on the upstream side and the temperature range of 523 673 K.
Optimization results show 29.8 33.5% reduction of orifice meter pressure loss for a Reynolds number Re = 1.84 × 104 to 8.69 × 104.
The theory is confirmed by experimental measurements of pressure drop in soap film meters of diameters in the range 6.2 73.4 mm.
At a depth of 3,000 meters, the barometric pressure of sea water is more than 300 atmospheres (as salt water is denser than fresh water).
It enabled changes of pressure up to P = 500 MPa, monitored via the tensometric pressure meter with precision + 0.1 MPa.
Pain thresholds were measured using the Analgesy-Meter (Ugo Basile, Comerio, Italy), which is able to gradually apply pressure to the paw, and the degree of pressure is shown on a graduated scale.
This type of stress meter comprises a pressure disc and a vertical chord sensor, associated with a frequency detector.
