Product/Service

Pass-Through Chambers For Cleanrooms

Source: Terra Universal
These Pass-Through Chambers cut down significantly on traffic and contamination by providing a better, safer way to transfer equipment and paperwork.

Cleanroom Pass-Through Benefits

  • Contamination-free transfer of materials in and out of the cleanroom
  • Eliminates unnecessary personnel entry
  • Full range of sizes meets any application
  • Stainless steel doors extend service life of plastic and laminate chamber—a must in a production environment!
  • Foolproof interlock mechanism prevents cross-contamination, is reliable and maintenance-free
  • Material options accommodate many application requirements, from chemical resistance to static control to fire safety
  • Accessories include LockLatch™, safety sprinkler, air shower, and Class 10 HEPA filter/blower module
  • Easy to install

Shutting the Door on Contamination
These Pass-Through Chambers cut down significantly on traffic and contamination by providing a better, safer way to transfer equipment and paperwork.

304 Stainless steel or powder-coated steel pass-throughs ensure clean operation. For especially stringent particle requirements, select an UltraClean™ electropolished 304 stainless steel pass-through.

Polypropylene and PVC models are suitable for chemical pass-through applications, and Static-Dissipative PVC models combine excellent chemical resistance with a surface resistivity of about 107 ohms/square for enhanced static and particle control. Each model features viewing windows of a compatible material.

Doors on either side can be outfitted with a mechanical interlock that keeps personnel from passing particles through the chamber. This device allows only one door at a time to open, and thus the amount of air that can enter the cleanroom is restricted to a very small volume. The no-maintenance interlock has no power, gas, or other facility requirement, so it continues to operate when other systems shut down.

ULPA Filtered Air Shower Clears the Air!
Terra offers an ULPA filtered air shower for enhanced particle control.

This option incorporates a brushless motor and 125 CFM variable-speed impeller to draw air from the "clean" side of the pass-through into an ULPA filter (rated 99.999% efficient with 0.12µm-diameter particles).

A magnetic sensor switch, installed on the "dirty" side door, activates the unit after the door has been opened and then closed. The shower washes the chamber with ULPA-filtered air to remove any contaminants that might have entered the chamber (the operation period is adjustable from 15 to 180 seconds). During operation, a red status light in the "cleanroom" side of the shower glows to warn operators not to open a door. When the shower shuts off, a green status light indicates that the door may be opened.

Exhaust air flows out of vents on the "dirty" side of the pass-through chamber (a microporous filter eliminates the chance of contamination in the event of a negative pressure). The cleanroom intake ensures a long filter life, and filter change-outs can be performed in a matter of seconds.