How is vacuum pressure measured and how do you convert psig to Pabs?
89101
mmHg\nPSI + 14.7 (at sea level)
290343
The pressure on the surface is roughly 14.7 PSI. Each 10m of depth is equivalent to 1 atmosphere. Therefore, at 120m, it must withhold 12 atmospheres or 176.4 PSI.
139840
The formula for either is P=rho*g*h, where rho is the density of the material (mass per unit volume) and g is acceleration of gravity, and h is the depth of the material at which you are measuring the pressure. \n\nPressure is a force per unit area. If force are unbalanced, then one gets acceleration of something i.e., something moves, by Newton's second law, F=ma.
1000421
Every gas has a unique breakdown voltage – the electric field at which it is ionized – and ionization sensors identify gases by measuring these voltages. The concentration of the gas can be determined by measuring the current discharged in the device. However, existing sensors are bulky, consume lots of power and require “risky” high voltages to operate.\n\nThe researchers also found that the current discharged in the device was six times higher than in conventional electrodes, which makes the detector highly sensitive. It is able to detect concentrations of gas as low as 10-7 moles per litre. Moreover, it can distinguish between different gases in a mixture and is not affected by external factors such as temperature or humidity – unlike previous detectors. \n\nGas-analysis vacuum sensors are virtually quadrupole mass spectrometers, with which the molecular density of a gas components and the equivalent partial pressure can be determined. The density of the gas composition can be then easily translated into total pressure.\n\nand believe me the smoke sensors works almost same as these gas detectors so plz refer to the article below
41200
If it is a high-volume, low pressure pump, one of the easiest ways is to get a long piece of clear tubing and make a U-tube manometer.  the pressure will cause the water to climb in the tube vented to the atmosphere, while the other end is connected to the pump outlet.  You measure the height of the water column, and can get the head directly in feet of water, a popular unit of measurement in the pump industry.  If it is a high pressure pump, a simple pressure gage from the local plumbing supply or hardware store will read in PSI.  In rough terms, 14.7 psi is approximately equal to 32.2 Feet of water column pressure.
548733
Pressure increases with depth ,each 10 meters 1 atmosphere\nto calculate the pressure for a certain depth use the formula.\nPa= (depth/10)+1\nwhere Pa is the pressure\nExample at 20 meters\nPa= (20/10)+1\nPa= 2+1= 3 Atmospheres
552193
Can be solved by simply plugging values into the Ideal Gas equation without using two states.  Pressure must be converted to atmospheres, however, and temperature to Kelvin.  P = 1.243 atm, T = 306 K\n\nn = PV/RT = 1.243 * 2.74 / (0.08206 * 306) = 0.136 mol\n\nmass = moles * MM = 0.136 * 28.01 = 3.81 g
412124
Do you know the Ideal Gas Law:\n\nPV = nRT?\n\nP = pressure in kPa\nV = volume the gas occupies\nn = the number of MOLES of gass\nR = 8.381\nT = Temperature in Kelvins\n\nYou might need to check for the units for volume and pressure, but that's pretty much it.  Solve for n, and use the density given to find the mass (assuming you know the MW for methane [16.04 g/mol])\n\nI'm not gonna do it for ya :-p, but it should be self explanatory
794147
You might work up some Q&A while showing this old demo of the effect of atm pressure...thereby adding some visual interest to the subject.\n\nAdd a few oz of water to a square-sided, metal, one-gallon can having a tightly fitted cap...bring to a vigorous boil (cap now off, please :-))..) and continue boiling until all air is expelled...screw cap in place and allow to cool...they will see the can collapse.\n\nWork up questions about the vacuum thus created (by the condensation of the water vapor) allowing atm pressure to exert its force.
665350
As the volume is constant,\n(P/T)initial = (P/T) final\n1/(25+273.15) = P/(50+273.15)\nP = 1.084 atm\n\n(Taking the pressure of the initial gas was 1 atm.
526702
The only way to know is to try it! Get one of those 12V compressors for inflating car tyres and connect to the bottle with a pressure gauge that reads +200psi. Cover the bottle with some sort of containment device like a laundry basket leaving the guage exposed so you can read it with a pair of binoculars. Turn on the pump and stand well back..!
792353
P1V1/T1=P2V2/T2\n\nV2=P1V1T2/(T1P2)\n\nV2=25 Liters* 1 atm* 298 Kelvin/( (19.71/760)atm*373 kelvin)\n\nV2= 770 Liters\n\nuse temperature in kelvin and convert mm Hg to atm  760 mm Hg in 1 atm
1135012
Look at fig.1 on the link below. This is a very useful chart which will give you a thorough knowledge about the test pressure. This website will also give you a good conception about the test procedures. \n\nFor one line answer: \nTest pressure is 1.5 times or 150% of the MAWP (Maximum Allowable Working Pressure) and not the MOP (Maximum Operating Pressure). \n\nWell, I have completed a year-long project on pressure vessel just a month ago. So I could provide you this link so easily. Let me know whether the answer was helpful.
610945
Bubble meters are good ways of measuring small air flow rates. They are available from scientific equipment dealers. \n\nThe meter sets up a bubble film that goes straight across a clear plastic pipe. As the air moves through the pipe, the bubble film move up the pipe. Two detectors measure the time it takes for the film to travel up the pipe a certain distance. Knowing the time difference, the distance between the detectors, and the diameter of the plastic tube gives you the flow rate.  Once you see it working, the concept is pretty simple.
711363
The volume will be 549.5 mL.  Let me know if you want to see the work.   Use this equation PV/T=P*V*/T*.    P,V, and T are just the pressure, volume, and temperature for the initial system (they are usually represented as P1,V1, and T1 but I left out the numbers which should be subscripts for simpliofication because yahoo does not have many text options.)  P*,V*, AND T* are the pressure, volume, and temperature after the system has been changed.  You could use any units pretty much for the pressure and volume as long as you keep the units consistent.  However always use Kelvin for the temperature.  Kelvin = 273 + Celcius Temp.
45446
The gas has enough pressure to support 165 mm of mercury, therefor the pressure is 165 mmHg.  To get the pressure in different units, simply look up the unit conversion factors.  The National Institute of Science and Technology is the standards body in the US, so you should refer to their conversion factors as being "official".  For units of pressure, go to:\nhttp://physics.nist.gov/Pubs/SP811/appenB9.html#PRESSURE\nAs is obvious from this table, to convert mmHg to Pascal you multiply 165 times 133.3224 to get 22000 Pa, which is 22.0 kPa.  To convert from Pascal to torr you divide by 133.3224, which gets you back to 165 torr.
135975
Thats what the intake does, who determind that it was sucking to much vacume leak ? need to know more , if your sure its a intake leak then its called a vacume leak,\npressure is mesured in PSI , Vacume Is Mesured in Inches,\nput a vacume guage on it , and you should be 18 to 20 inches at an idle, if its much less then you have a vacume leak, then proceed with checking all vacume related hoses and components, or go to AAA aproved shop have it diagnoss