Equipment Variables (2)

Question 1

Ampere turn formula

Answer 1

Current (amp) x # of turns = ampere turns

Question 2

Variables impact required current using a solenoid

Answer 2

• Part geometry
• Part size
• Part length
• Part Positioning

Question 3

Part Geometry impact on solenoid inspection

Answer 3

Length to Diameter Ratio:

between 2 and 15, any less require a “pole piece” to increase the ratio.

Question 4

Part Size impact on solenoid inspection

Answer 4

Fill Factor:

cross sectional area exceed 10% of inside coil diameter opening.

Question 5

Part Length impact on solenoid inspection

Answer 5

Limitations of Longitudinal Fields:
length or section of part must not exceed 26cm (18in) or 13cm (9in) on either side of coil, if it does exceed must be inspected in sections.

Question 6

Part Positioning impact on solenoid inspection

Answer 6

Maximizing Field Strength in Part:

test part must be in contact with inside part of coil wall.