Great question! We hear this all the time and it is why the Sierra meter is such a popular a choice by scientists and technicians “in the know”. Sometimes the pressure based flow transducers are called Volumetric or Mass Flow Meters. A pressure based meter is essentially a "Volumetric" device with the addition of the corrections required to compensate for the flowing gas, pressure, temperature and other second and third order effects.

Whitman no longer manufactures an absolute pressure switch, because we found that in the majority of cases, it is not necessary to the application. Please submit our Customer Specification Form (CSF) for our recommendation.

Every single 800 Series Sierra Flow meter is calibrated on a Primary Standard. Sierra does NOT use transfer standards. We can not stress how beneficial this is to YOU as the end user! The reason nobody else calibrates EVERY meter on a Primary Standards because the cost to calibrate Flow Meters with Primary Standards is IMMENSE however it is TRULY the ONLY way any company manufacturing Mass Flow Meters with accuracies of 1% or better could justifiably make such claims of accuracy.

A - It is an electronic unit that measures the amount of air being drawn into the engine. Its output is a variable voltage that changes in a direct relationship to the mass (weight) of air passing through it into the engine. The fuel injection "brain" uses this voltage as one of several inputs in order for it to calculate the length of time the fuel injectors need to be open and hence maintain the correct fuel/air ratio mixture under all conditions.

The choice will be influenced by what type of system you desire to run and your budget. Speed density is less complicated wiring, cheaper and easier to install without the complicated and expensive mass air system. However, it does have its drawbacks, as it is not as forgiving when you decide to change cam or exhaust as it depends on the engine manifold vacuum signal to help determine fuel calibrations. But for a very mild or stock engine with no desires to modify, it is a superb system.

Sorry but this is proprietary information and not required by anyone other than the designers and operators and we would only make available after NDA's are signed by those concerned with an actual order.

Contain all information necessary for the browser(or other client program) to locate the resource named in the URL This includes protocol moniker used( i.e http://, ftp://..etc..), Server's Domain name or IP address and the file path Only provide information necessary to locate a resource relative to the current document(document relative) or current server or domain(root relative)

Relative: Relative links usually look something like index.html or /folder/page.html. The way the page knows where to go is all relative to the page the link is placed on. A link to index.html for example, will only work if the file is found in the current folder. Absolute: Absolute links usually look something like http://www.example.com/page.html. This is a full url and the linked to page will be found regardless of where that link is located on the site.

No. An engine can only draw in a certain volume of air depending on the engine’s size (measured by such things as bore, stroke and number of cylinders). Vehicles are designed to accommodate large changes in air pressure so they can operate at sea level or at an altitude of 14,000 feet. Engine computers adjust the amount of fuel required as a result of changes in air pressure (density).

Tradition and it is not a good one. SCCM and SLPM refer to an "implied" density, the S in SCCM, which is determined by the calibration conditions chosen for your meter. Using air as an example, we know the density of air at the STP conditions (Standard Temperature, and Pressure) of 0 Degrees C and one atmosphere is1.293 g/cc. Knowing this we can convert SCCM to g/m.

They each have their advantages and disadvantages over the other. Which one will suit your needs better depends on your specific application. Both have the potential to work equally well on stock engines, as well as on modified engines. However, MAP is much more sensitive to engine modifications (particularly cam and head changes). A heavily modified engine with a MAP system will not run well on a stock tune, but can run flawlessly with the proper tuning.

Air practises a certain force on objects, called air pressure. All air found in the atmosphere presses itself upon earth as a result of magnetic attraction force of the earth. Air pressure is practised upon each object and life form on earth, such as tables, roofs and houses, but also humans, animal and plants. You will not notice this air pressure, because there is a force inside your body that creates a pressure equally strong on the air around you.

Nordic Pure Merv 12 filters have a low air flow resistance for residential and commercial heating and cooling systems. Air flow is generally measured as a difference in air pressure on each side of the filter, measured by an instrument that uses water in a measured column to show air pressure. The higher the pressure difference, the more the water in the instrument moves. Its movement is measured in inches. The more inches of water moved, the more the pressure difference.

Both systems have their place and usefulness. A discrete based or remote particle counter system gives great resolution without missing any data. The cost per point is more expensive than a manifold system, but has a better chance to catch intermittent particle excursions. A manifold sampling system is much more cost efficient, but sacrifices resolution due to the time it takes to rotate one complete revolution on the manifold.

Many companies sell misting systems that use water pressure directly from the tap or hose. While these systems are very inexpensive, they also lack the key element that makes misting so effective. Without high pressure, the water cannot be sheared to suitably small droplets. Low-pressure systems are prone to "spraying" versus truly misting an area. Even among high pressure misting systems, Aquality is an industry leader.

Because mass is virtually unaffected by changes in pressure or temperature. Micro Motion Coriolis mass flowmeters measure mass directly. In contrast, volumetric flow measurement technologies such as differential pressure, positive displacement, turbine, or vortex, must perform pressure and temperature compensation to calculate mass. Each form of compensation introduces possible errors into the measurement and additional breaks in the customer piping (potential leak points).

It is impossible because we know that the oil treatment on our cotton is very small (usually less than 2 ounces). Once the oil is properly and evenly absorbed through the cotton, no oil will come off, even under extreme engine conditions.

Air mass (m) is the thickness of atmosphere through which a beam of sunlight travels. At any sea level location, the air mass is 1 when the Sun is straight overhead at solar noon. A simplified formula for air mass is m = 1/sine of the Sun's angle over the horizon. Therefore, when the Sun is 30 degrees over the horizon, m = 2 (1/0.5). A more refined version of this basic equation which accounts for the curvature of the Earth is used in the VHS-1 spreadsheet.

We recommend 55 psi air pressure in the air bags. The minimum amount should never be lower than 10 psi and the maximum should never exceed 90 psi.

First and foremost read and understand your owners manual! With that said, the weight carrying capacity of your tires is computed with the tire inflated to the max pressure. Look on the sidewall of the tire and you will see something like "Capacity 1068 Lbs at 50 PSI". This should be measured COLD (before you tow the trailer) and you should always use a quality pressure gauge to check tire pressure.