
Pressure transducers are commonly used to measure pressure by generating analog signals usually in the range of 4 mA to 20 mA or 0 V-dc to 10 V-dc in response to applied pressure. The system whose schematic is shown can be used to calibrate pressure transducers. A rigid container is filled with pressurized air, and pressure is measured by the manometer attached. A valve is used to regulate the pressure in the container. Both the pressure and the electric signal are measured simultaneously for various settings, and the results are tabulated. For the given set of measurements, obtain the calibration curve in the form of P= a (I) + b, where a and b are constants, and calculate the pressure that corresponds to a signal of 10 mA.
Δh, mm |
28 |
181.5 |
297.8 |
413.1 |
765.9 |
1027 |
1149 |
1362 |
1458 |
1536 |
I, mA |
4.21 |
5.78 |
6.97 |
8.15 |
11.76 |
14.43 |
15.68 |
17.86 |
18.84 |
19.64 |


Trending nowThis is a popular solution!
Step by stepSolved in 3 steps with 8 images

- The differential change in pressure p close to the surface of a static fluid is given by the following expression:dp/dy = -3Ap2,where A is a constant, with units of 1/(atm•m), and p is the pressure in atm. The pressure at the surface of the fluid is p(0) = 1 atm, and the coordinate y here is positive upwards with origin at the surface. An absulute pressure gauge is placed at a depth 0.19m in the fluid. What would be the reading of the pressure gauge in units in atm? you can take the constant A=1(atm.m)^-1arrow_forwardPressurized eyes Our eyes need a certain amount of internal pressure in order to work properly, with the normal range being between 10 and 20 mm of mercury. The pressure is determined by a balance between the fluid entering and leaving the eye. If the pressure is above the normal level, damage may occur to the optic nerve where it leaves the eye, leading to a loss of the visual field termed glaucoma. Measurement of the pressure within the eye can be done by several different noninvasive types of instruments, all of which measure the slight deformation of the eyeball when a force is put on it. Some methods use a physical probe that makes contact with the front of the eye, applies a known force, and measures the deformation. One non-contact method uses a calibrated “puff” of air that is blown against the eye. The stagnation pressure resulting from the air blowing against the eyeball causes a slight deformation, the magnitude of which is correlated with the pressure within the eyeball.…arrow_forward- The system shown in the figure is used to accurately measure the pressure changes when the pressure is increased by AP in the water pipe. When (Ah 70 mm), what is the change in the pipe pressure. Glysa 50-13 D-10 do 3mmarrow_forward
- Please solve question 1.91 using Figure P1.91arrow_forwardI did a venturi effect experiment which involved taking 15 mesurements. The opening of the damper at the end of the tube was increasing in increments of 0.5cm for each of the 15 mesurements. Then the change in length in manometer tube was recorded. the manometer tube used in this experiment wasn't vertical, it was horizontal with a slight incline. Room temperature and pressure were recorded at the start of experiment as well. As the opening of the damper increased from mesurements 1 to 15, the change in length of manometer tube also increase from 1 to 15. the bigger diameter of the tube is 140mm and the diameter of throat section is 89mm. The density of the fluid is 870 kg/m. Using this information workout all the equations on the image and also the mass flow rate which should be volumetric flow rate multiplied by density. Also workout the reynolds number. Workout all these to determine the relationship between mass flow rate, velocity value and reynolds number. Let me know if you want…arrow_forward
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY





