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The DuraGuard™ non-contact hopper level detector features a uniquely simple solution to your fly ash measurement challenges. Gravity does the work. The vacuum present in a negatively pressurized hopper (in a balanced draft boiler) pulls the detector’s flapper closed. When the hopper fills above the detector's pipe opening, vacuum is lost and the flapper falls open to energize the switch, sending an alert to the operator.
This ingenious and economical detector can be used to replace nuclear design detectors at a fraction of the cost. The DuraGuard is mounted outside the hopper, so it is never exposed to fly ash or flue gas, and it can be easily incorporated into your control systems. |
