Vertical Line Shaft Pumps
by
canfieldcustompumps
Vertical line shaft pumps are used in many and varied applications. These pumps are usually suspended above the water in a well or a pit. Only the motor shows above the water level. They come in different lengths and sizes, are made out of your choice of several different materials, and can be had in different sizes as well. There are both single stage and multi-stage vertical line shaft pumps.
What There Is To Know About Servo Motors
by
Samuel Circton
Because servo motors are used in robotics, they tend to be smaller in size. The biggest benefit of a servo is the amount of pressure it provides in comparison to the amount of electricity used. A circuit is usually built within the servo unit. It will have a smaller motor to accommodate a smaller engine. The size of the motor is proportional to the amount of torque delivered.
Pumps for Cleaning Water
by
canfieldcustompumps
Clean water is one of the most important features of a pond, no matter what the size. No one wants to see a pond full of dirty, brackish water, so in order to prevent this, you must invest in a pond cleaning pump. If you are already a pond owner, and your pond looks as if it could use a good cleaning, it would be a good idea to check the operation of your present pump.
Piping Abbreviations
by
Lance Williams
AAR-- Association of American Railroads
AGA-- American Gas Association
AISI-- American Iron & Steel Institute
ANSI-- American National Standards Institute — Formerly ASA
API-- American Petroleum Institute
ASA-- American Standard Institute — Now known as ANSI
ASM-- American Society for Metals
ASME-- American Society of Mechanical Engineers
A
Thermocouple
by
Charlie Douglous
A thermocouple consists of two electrical conductors of different materials connected at one end called hot junction. The two free ends build a compensation point. The thermocouple can be extended by using an extension cable. The extension or compensating cables are connected to a measuring instrument, e.g. a galvanometer or electronic measuring un
Advantages of Resistance themperature detectors RTD
by
Charlie Douglous
Resistance themperature detectors can be used over a temperature range of -220 °C to +600 °C.
Advantages of RTD:
• High temperature ranges
• Resistance to vibration
• High immunity to electrical interference
• Long-term stability
• Robust design
• High accuracy
Resistance thermometers are used in the following industries:
• Chemical in
Advantages of Resistance themperature detectors RTD
by
Charlie Douglous
Resistance themperature detectors can be used over a temperature range of -220 °C to +600 °C.
Advantages of RTD:
• High temperature ranges
• Resistance to vibration
• High immunity to electrical interference
• Long-term stability
• Robust design
• High accuracy
Resistance thermometers are used in the following industries:
• Chemical in
Resistance Temperature Detectors
by
Charlie Douglous
Resistance Temperature Detectors works on property possessed by all conductors and semiconductors, that their resistance varies as a function of temperature. This property is more or less pronounced, depending on the particular material. The relative change in the resistance as a function of temperature (dR/dt) is known as the temperature coefficie
Process Control
by
Charlie Douglous
In order to produce a product with consistently high quality, tight process control is necessary. A simple-to-understand example of process control would be the supply of water to a number of cleaning stations, where the water temperature needs to be kept constant in spite of the demand. A simple control block is shown in Figure "a", steam and cold
Instrumentation
by
Charlie Douglous
Instrumentation is the basis for process control in industry. However, it comes in many forms from domestic water heaters and HVAC, where the variable temperature is measured and used to control gas, oil, or electricity flow to the water heater, or heating system, or electricity to the compressor for refrigeration, to complex industrial process con
Nature and Composition of Crude Oil
by
Lance Williams
Crude oils are often classified into asphalt-base, paraffin-base, and mixed-base, depending on whether they contain asphalt, wax, or a mixture of both in the distillation residue. They are also referred to as crude oils of Coastal, Pennsylvania, and Mid-Continent types, respectively.
The refiner often classifies crude oils into nonlubricatin
Crude-oil Substitutes
by
Lance Williams
Petroleum is the cheapest but not the only possible source of liquid fuels in this country. Petroleum substitutes can be obtained from tar sands, large beds of which are to be found in the West and in western Canada, and by extraction from coal and from oil shale deposits, which are extensive in Colorado and other Rocky Mountain states. Shale depos
Natural-gas Liquids
by
Lance Williams
Petroleum products as they are termed may also be supplied in whole or in part from natural gas. The liquids extracted from gas constitute an important supplement to our petroleum resources. Today they are about one-tenth the volume of the crude oil taken from the ground. The total quantity of natural gas produced in the United States in 1954 was 1
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