550MRS6DE: Upgrade hollow mesh ring to solid section.
M11: 11,000 gauss under screen magnet SS316 contact parts polished to Ra < 0.8 microns Magnet tube covers in blue metal detectable silicone x 6 (NOT POSSIBLE WITH ATEX 20) .
SI-SS-EX: Magnetic interlock switch on top cover Atex zone 21 II 2D , stainless steel 304 body, 24VDC 2NC, 1NO, 5m cable.