MEASURING - 7 - NMC TESTING_Vacuum and Airflow

Question Title

* 1. Enter your first and last name

Question Title

* 2. Select all that apply. The airflow meter (AFM) should be placed:

pipeline systems: at or near the receiver for

weigh jar systems: on the vacuum supply for

Question Title

* 3. Select all that apply. In order to make good air flow measurements:

Restrict the outlet of the air flow meter

Use a digital or dial gage calibrated quarterly

Connect the vacuum gage directly to air flow meter

Measure vacuum in "quiet air"

Question Title

* 4. Select all the options that match the flow rate with the minimum opening size for the AFM connection.

38 mm (1.5 inch) opening: <3000 LPM (100 CFM)

51 mm (2.0 inch) opening: 3000-5000 LPM (100-175 CFM)

75 mm (3.0 inch) opening: >5000 LPM (175 CFM)

25 mm (1 inch) opening: Extraneous Answer Choice

Question Title

* 5. AFM Correction factors can generally be ignored for measurements made between _____ kPa.

44-50

38-40

30-35

40-54

Question Title

* 6. When measuring receiver vacuum, the first milk inlet on the milkline in parlor is only a valid testing point if there is little or no airflow in the milkline where the measurement is being taken.

True

False

Question Title

* 7. Select all the options that match the appropriate location with type of regulator when measuring vacuum at the sensing point of the regulator

Remote sensing regulators: Measure with a tee in the sensor tube connection to the airline.

Air admission type: Measure with a tee in the sensor tube connection to the airline.

Air admission type: Test nipple 5 pipe diameters away from any upstream or downstream fitting or elbow. If this is not possible, then test as close to the regulator as practical.

VFD Systems: Test nipple 5 pipe diameters away from any upstream or downstream fitting or elbow. If this is not possible, then test as close to the regulator as practical.

VFD Systems: Test nipple as close as possible to the vacuum transducer used to sense system vacuum.

Question Title

* 8. Vacuum measurements should be made in "_________".

during the night

quiet air

inside a building

Question Title

* 9. While measuring vacuum in the pulsator airline, test nipple on the cross over line between the two sides of the barn at least ____ pipe diameters from any fitting or elbow.