Basic Instrumentation Ch 6

Question 1

Name 3 types of Bourdon tubes

a) c-tube, spiral, metallic
b) spiral, c-tube, helic
c) helic, spiral, bell-type
d) none above

Answer 1

b) spiral, c-tube, helic

Question 2

Name the two diaphragm pressure elements

a) non-metallic or slack diaphragm
b) sensitive
c) stable
d) metallic
e) spiral

Answer 2

a) non-metallic or slack diaphragm

d) metallic

Question 3

A c-tube is used to strengthen a metallic diaphragm unit made from two capsules

a) true
b) false

Answer 3

b) false

Question 4

On pressure control devices, commonly, the high pressure side is called ____ and the low pressure side _____ .

a) upstream ; downstream
b) downstream ; upstream
c) upstream ; upstream
d) downstream ; downstream

Answer 4

a) upstream ; downstream

Question 5

A back pressure regulator is a regulator which controls upstream pressure by regulating the flow downstream. The controlling factor is upstream pressure, rather than downstream.

a) true
b) false

Answer 5

a) true

Question 6

Slack diaphragm elements are used in the draft gauges

a) true
b) false

Answer 6

a) true

Question 7

A Manometer is a pressure gauge that responds to large pressure changes

a) true
b) false

Answer 7

b) false

Question 8

A Bell-Type gauge is:

a) sensitive
b) accurate
c) stable
d) all above

Answer 8

d) all above

Question 9

Name 3 types of Mechanical Pressure Elements

a) auxiliary relay
b) bellows
c) regulator
d) diaphragms
e) liquid manometer
f) none above

Answer 9

b) bellows
d) diaphragms
e) liquid manometer