Section $16-1$: Timers

Each timer type performs a timing function, but usually one type of timer works best for a given application. For

the application requirements, list the timer type $($dashpot$,$ synchronous clock, solid$-$state, or solid$-$state program$-$

mable$)$ that would most likely be a good choice. If more than one type works, select the least expensive type.

A timer is used to control drying time at a car wash. The drying time needs to be

changed by the operators based on the weather conditions $($outside temperature

and humidity$).$ The time setting needs to be visible at all times so the operators can

easily see the time setting. What is the best type of timer to use in this application?

A timer is used to control the wet$-$down area at a car wash. There are two car

wash types, each with a different price. One price is for a basic wash that has a

shorter wet$-$down spray and is recommended for normal washes. The second is a

heavy dirt wash that has a long wet$-$down spray and is recommended for dirtier or

road$-$salted cars. The operators need only press one of two buttons to set the type

of wash for each car coming through. The button pressed sets the timer's preset

times. What is the best type of timer to use in this application?

A timer controls the soap area at a car wash. The amount of soap dispensed is

always the same. The amount of time is set during the initial installation and not

changed again. What is the best type of timer to use in this application?