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SSR-Ex Online TRO and Chlorine Monitor for Hazardous Environments

The SSR-Ex is a 2nd generation instrument designed to be SAFE, SIMPLE, and ROBUST. This instrument is rated for ATEX Zone 1 and Zone 2 hazardous areas aboard ships. To make the SSR-Ex SAFE, we created a Patent Pending method for isolating electronics from the “Wet Chemistry” area of the instrument. This means that an operator can open the enclosure at any time to service the unit without using a bypass key, or exposing the electronics to a potentially hazardous atmosphere. The SIMPLE, 4 button interface panel and color screen allow for easy manipulation and viewing of 0-15ppm Chlorine measurements at any time.


  • Operation in IECEx/ATEX Zones 1 and Zone 2
  • 2 user settable alarm relays
  • Calibration kit available
  • 4-20mA and Modbus outputs

Select a Model

Select options below to identify the UPC, Order Code, and Repair Kit for a specific SSR-Ex

Approval Information

For approval information, please refer to the products specification sheet. For any other information on product certification and documentation information, please visit our certification partner websites: