Accelerometer forming a recess enclosing an electromagnetic coil

An accelerometer system comprising:

• a first electromagnetic coil;
• a first excitation ring comprising:
• a first housing;
• and
• a first cover removably attached to the first housing via a first one or more fasteners, wherein the first housing and the first cover define a first recess configured to house the first electromagnetic coil, and wherein the first housing, the first cover, and the first one or more fasteners are formed from a same material;
• a second electromagnetic coil;
• a second excitation ring comprising:
• a second housing;
• and
• a second cover removably attached to the second housing via a second one or more fasteners, wherein the second housing and the second cover define a second recess configured to house the second electromagnetic coil, and wherein the second housing, the second cover, and the second one or more fasteners are formed from a same material;
• and
• a proof mass assembly positioned between the first excitation ring and the second excitation ring,
• wherein the first electromagnetic coil is configured to generate a first magnetic flux that flows through the first excitation ring and maintains a proof mass of the proof mass assembly in a null position, and
• wherein the second electromagnetic coil is configured to generate a second magnetic flux that flows through the second excitation ring and maintains the proof mass in the null position.