There are several possibilities for trying out the Anderson loop. Choose one that works for you.
You can:
Construct your own from detailed circuit designs published in the Current Loop Compendium , available from Valid Measurements.
Buy a reference design signal conditioner from Valid Measurements.
Buy one of the products available from a manufacturer that includes the Anderson loop in their equipment.
Have your usual supplier upgrade your equipment to include Anderson loop technology.
Use an Anderson loop "front end" that causes equipment designed to condition Wheatstone bridge circuitry to adapt to an Anderson loop.
Contact Valid Measurements with your situation and let us suggest some possibilities and sources that meet your unique needs.