Which of the following instruments use a battery operated fan to draw air over thermometer bulbs?
a. Hydrometer
b. Aspirating psychrometer
c. Sling psychrometer
d. Dry psychrometer
e. Humidistat
Answer: B
Which of the following instruments use a battery operated fan to draw air over thermometer bulbs?
a. Hydrometer
b. Aspirating psychrometer
c. Sling psychrometer
d. Dry psychrometer
e. Humidistat
Answer: B