Detector Plate 
 
 
Figure 17.  SM21 Swivel Mount Attachment Plate Dimensions 
 
 
 
 
9.2  Cleaning 
Only experience of the operating environment will dictate how often you clean your detectors and mountings, but you should 
remove contamination by wiping the mounting, detector and detector window regularly with a lightly dampened micro-fibre cloth. 
Do not use dry cloth or dry paper in flammable atmospheres as this may cause static discharge that may result in an explosion. 
Remember that airborne dusts can be more hazardous than flammable vapours. 
Used cleaning cloths may be hazardous to health, so launder them carefully or dispose of them as hazardous waste.