Formulas

Question 1

Eo = Em - Er is :

Answer 1

Eo : voltage measured by end device
Em: voltage generated at temp measuring junction
Er : voltage generated at reference junction

Question 2

RTD:

Answer 2

Question 3

This is

Answer 3

For rtds

Question 4

This is

Answer 4

For rtds

Question 5

Rtds

Answer 5

Question 6

This is

Answer 6

For proportional output calcs
-COo controller bias setting
-KcE controller proportional action

Question 7

F = Kp

Answer 7

F = centrifugal force
K = a constant
p = density of the liquid

Question 8

If you 2x the diameter of the impeller or speed on a pump how does that effect power consumption ?

Answer 8

Needs 8x more power ( 2^3)

Question 9

Pumps flow rate is __ to pressure

Answer 9

Inverse

Question 10

Why do you use check valves on centrifugal pumps

Answer 10

Can cause backlog through the pump

Question 11

Pumps use ____ (unit)instead of pressure

Answer 11

Head
Meters

Question 12

This is for?

Answer 12

PID cacl

Question 13

This is?

Answer 13

Mass flow rate
Qm = mass
Qvs = volume
Ps = density

Question 14

X = kpag + kpaa

Answer 14

X is kpa

Question 15

This is for

Answer 15

Reynolds #

Question 16

For turbulent flow use a ____ or ___/ meter to measure flow.
Why?

Answer 16

Ultra sonic or magmeter
No moving parts

Question 17

Calculate the % LEL of propane leaking near a tank where the concentration is .5% by volume. The LEL value is 2.0 and the UEL is 9.5.

Answer 17

LEL = 2%
% LEL =( .5%/2.0%) x100
% LEL = 25%

Question 18

This is

Answer 18

Question 19

This is for

Answer 19

Ac to dc rectified voltage

Question 20

This is

Answer 20

Question 21

This is

Answer 21

Question 22

This is

Answer 22

Question 23

This is

Answer 23

Question 24

Pressure triangle

Answer 24

Question 25

Answer 5 and or 6

Answer 25

Question 26

This is?

Answer 26

Question 27

This is?

Answer 27

Question 28

This is ?

Answer 28

Question 29

This is?

Answer 29

For differential pressure
- pressure high - pressure low
Must be 2 absolute or 2 gage values

Question 30

kPa?

Answer 30

Question 31

This is ?

Answer 31

Question 32

This is for?

Answer 32

Question 33

These are:

Answer 33

Question 34

This is

Answer 34

Continuity equation

Question 35

If an optical flame detector can detect a 1m^2 fire at 8 m distance what size can it detect at 4 m?

Answer 35

Question 36

Formula fir RTDs

Answer 36

Question 37

HUH?

Question 38

Volume of ball (float)

Answer 38