There are many types of beam limiters. They can be configured with a beam limiter of 125 KV and a beam limiter for 150 KV spherical tubes. They can be divided into portable X-ray machines or mobile X-ray machines or fixed X-ray machines for applicable X-ray machines.
X ray collimator used in mobile X-ray machines are generally 125 KV and 125 KV spherical tubes. The x ray collimator used in mobile X-ray machines is a small and medium beam limiter in the beam limiter.
Mobile X-ray machine is a movable X-ray machine. The advantages of mobile X-ray machine are small size, mobile device, and can move position at will. It is suitable for many occasions, not limited to one place. This is what fixed X-ray machine lacks. The x ray collimator used in mobile X-ray machines has the same characteristics.
Mobility also requires small size and weight of mobile X-ray machine, so the volume of x ray collimator used in mobile X-ray machines is smaller than that of fixed X-ray machine.