Amatrol Pneumatics set (All modules)

What fluid is most commonly used in Pneumatics?

Air

DCV stands for __

Directional Control Valve

DCV schematics show what?

DCV schematics show all the positions of the DCV

Two crossing lines that are connected, on a pneumatic schematic, are represented by what?

A dot

The control devices used in pneumatics are called…?

Valves

Filters should be used on all pneumatic systems because atmospheric air contains __.

dust

Smaller dirt particles are removed from the air by the filter's __.

Element

The fitting used to connect two branch circuits to a single supply line __.

Tee

The poppet of a pressure regulator is closed by the .

Downstream Pressure

What is the low pressure (psi) you should not exceed involving pneumatic safety?

30 psi

Pressure is a measure of _.

Force Intensity

The 5-port, 3-position DCV is held in the mid-position by the __.

springs

What is used to classify DCVs?

Number of ways, Number of positions, & Operator type

A regulator is used in pneumatics to .

Provide a constant pressure to the circuit

The assembly that moves inside the barrel-shaped body of a cylinder is…?

Piston / Rod

What pneumatic component provides straight line motion?

Cylinder

Industry uses quick connect fittings when…?

There is a frequent need to connect and disconnect a hose

What pneumatic actuator converts compressed air flow into rotary mechanical power?

Motor

The single-acting spring return cylinder is extended by the _.

Pressure

The 3-port DCV is used in applications where the actuator needs to be powered in _.

One direction

What type of line is used in a pneumatic schematic to indicate an exhaust line?

Dotted line

Two of the most common types of pneumatic motors are _.

Vane & Piston

The manual 3-port DCV is held in the energized position by the __.

Operator

There are __ basic rules for drawing pneumatic schematics.

Seven

To reduce the noise of a pneumatic 5-port, 3-position DCV place a muffler in the __ port.

Exhaust port (E)

Pneumatic motors operate by using air pressure to create a turning force called __.

Torque

The body of a single acting cylinder has how many connection ports?

One connection port

The two types of resistance to air flow in a pneumatic system are .

Friction & Actuator Load

An Air Compressor creates __.

Pressure

The force output of a cylinder when extending can be calculated by multiplying the pressure times the __.

Piston Area

The net area over which the pressure acts when retracting a double-acting cylinder can be found by subtracting the rod area from the __.

Piston Area

Delta P is the difference in pressure between .

Two points in a pneumatic system

Flow occurs between two connected points in a pneumatic system when .

A pressure differential exists

To convert gauge pressure to absolute _.

Add; Atmospheric pressure to the gauge pressure

Add; 14,7 psi to the psig reading

Add; 101.3kPa to the kPa gauge reading

Boyle's Law states that __.

Pressure is inversely proportional to volume

The speed of an unloaded cylinder is calculated by _.

Dividing Volume of flow by the Piston Area

Pneumatic leverage refers to the ability of a pneumatic system to _.

develop a large force output with a low force input

Pascal's Law applies only to __.

Confined Fluid

The way to read a rotameter is to read the scale from the __.

Center of the ball

A flow control valve is a combination of a __.

Needle Valve & Check Valve

A meter-in flow control circuit controls the fluid .

Entering the actuator

What are the parts of a Flow Control Valve?

Adjustment Screw, Check Valve, & Body

Applications for the __ speed controls are with cylinders where loads can change periodically.

Meter-Out Flow

A needle valve is often used in pneumatic circuits to _.

To control the actuator speed

If the load on the actuator changes, the pressure required to move the load will __.

Also change

A meter-out flow control circuit controls the speed of an actuator by _.

Applying back pressure to the actuator

An independent speed control circuit may be needed with a double-acting cylinder because _.

Equal extend and retract speeds are needed

What port speed control affects the speed of an actuator in both directions?

Pressure port speed control

The flow rate of air is the amount of air that passes through a system _.

In a certain amount of time

Another name for a rotameter flow meter is _.

Variable Orifice

A needle valve controls air flow rate by causing a(n) __.

Restriction

Exhaust port speed control works by creating __ to control the retract speed of a single-acting cylinder.

back pressure

One of the advantages of the Globe Valve is .

Plugs the seat for tight closure

A characteristic of the pneumatic cam valve ports is they can ____ to obtain different operations

Switch functions

The function of a pneumatic cam-operated valve is ___.

A Pneumatic Limit Switch

A two-way is normally used as an off/on switch and to control _.

Flow rate

A pneumatic cam-operated 3/2 valve used with a cylinder in 2-speed application, slow the cylinder by _.

Switching to restrict cylinder exhaust flow

The deceleration method used to slow pneumatic cylinders by switching to a slower flow control speed is _.

2-speed control with a cam valve

For shifting, externally air-piloted pneumatic DCVs use _.

Remote Air Pressure

The operation of a pneumatic DCVs is the same as electrical DCVs except _ in pneumatic DCVs means there is flow.

Normally Open (N.O.)

What is true of air logic systems compared to electrical control systems?

Safe in hazardous & wet environments, Electrical power not required, Cannot be programmed easily

A __ spool design on a pneumatic DCV has no seals between the spool and the bore.

Lapped

One way to seal-in air logic is to use a shuttle valve to hold pressure on a _.

Pilot Line

A shuttle valve exhausts an air pilot of a DCV when _.

Both inputs are vented

Shuttle valves are used in air logic circuits to _.

Provide OR logic, Latch in spring offset externally piloted DCVs, Provide an output when either of two input signals are applied

Air logic is popular in the food processing industry because _.

Of the moisture present during cleaning

The procedure for determining the accuracy of a pressure gauge is called __.

Calibration

The advantage of the Regenerative Dessicant is __.

Very low dew points

Refrigeration dryers use __ to condense water from compressed air lines.

Heat exchangers

The number 70 stamped on an air filter refers to __.

The filter's micron rating

In pneumatic systems, free water is collected by located at .

water traps; Low positions

A __ filter removes water and oil from the air stream by collecting the water and oil into droplets and then draining them off.

Coalescing

Many lubricators can be identified by __.

The small sight dome on top

The flow tube of an acrylic flow meter can be cleaned with pure __ and water.

Soap

The advantage of the Micro-Aerosol type lubricator is __.

Produces smaller size aerosols which can be carried farther downstream

When air gains enough water vapor to reach a relative humidity of 100%, the air is said to have reached the __.

Dew Point

When the compressed air leaves the compressor, it is very hot. As it flows through the distribution system, the air cools off, and _.

Water condenses in the system

Damage to the vanes of an air motor can occur quickly if _.

Not properly lubricated

To pinpoint an air leak, dab a(n) _ on the suspected area.

Soap solution

What in a coalescing filter prevents the contaminants from returning to the clean air path?

Wall of foam

A dryer in a compressed air system _.

Lowers the dew point of the air

To avoid water condensation in a pneumatic system, water is removed from the air so the _.

Dew point drops

The largest maintenance problem in pneumatic systems is __.

Air leakage

An optimal air line filter should have no more than 2-5 psi __.

Pressure drop

The proper lubricant to use in pneumatic lubricators is _.

Lightweight petroleum base oil

The method of lubricating pneumatic components by mixing the lubricant with the compressed air is called __ lubrication.

Aerosol

If the compressed air system contains contaminants and are not cleaned to a proper level it could cause _.

Components to fail faster, Higher operating costs, Leaks to occur

3 common elements used in compressed air filters are _.

Sintered bronze, synthetic layered, porous-plastic

The aftercooler is a _ that cools the air with either water or another stream of air.

Type of heat exchanger

What type of pneumatic trap releases the least amount of compressed air as it operates?

Automatic trap

When more than one rod size is available for a cylinder, the smallest rod is called the __ rod.

Standard

A stop tube helps reduce cylinder rod bearing wear due to __.

Side Loads

The amount of torque a pneumatic motor will generate when it begins to turn from a stopped condition is called the .

Starting torque of the motor

If the load on the shaft of an air motor increases, the air motor will __.

Slow down

When selecting a pneumatic motor, it is common practice to use _ of the available pressure at the motor to determine motor size.

2/3

The quick exhaust valve has _ ports.

3

Pressure, Cylinder, Exhaust

Air bearing size depends on the air pressure and the _.

Load being moved