Intrinsically Safe Barrier Blocks


Cleveland-Kidder® Intrinsically-Safe Barrier Blocks permit the use of UL Listed Cleveland-Kidder Tension Transducers in hazardous Class 1, Group A, B, C, or D atmospheres, when combined with CMC Tensi-Master Indicators, DIN Rail Amplifiers, and Controllers. The Transducers may be installed in the hazardous area, without purging, up to 150 feet away from the Barrier Blocks, and the Indicator or Controller when located in a non-hazardous area and connected in accordance with CMC Control Drawing A800-42273 or A800-42281.


Intrinsically Safe Barrier Blocks


  • Permits the control of tension in processes located in hazardous locations without the
    need to purge transducers
  • UL Listed
  • All kits come comlete with barrier blocks and facilities for mounting and earthing the barriers, connecting the IS ears cable and terminating the cables shield



Web Tension Capabilities Brochure

Instruction Manuals

IS Barrier Block - Ultra A0-90357, RevAA

IS Barrier Black - Classic A0-90360 RevAA