Sand and Dust
This test method is divided into two procedures.
- The small-particle procedure (dust, fine sand) is performed to determine the ability of the equipment to resist the effects of dust particles that may penetrate into cracks, crevices, and joints.
- The blowing sand test determines whether the hardware can be stored and operated under blowing conditions without experiencing degradation of its performance, effectiveness, reliability, and maintainability due to the abrasion (erosion) or clogging of large, sharp-edged particles.
Examples of problems that may occur when exposure to blowing sand and dust include:
- Abrasion of surfaces
- Penetration of seals
- Erosion of surfaces
- Degradation of electrical circuits
- Clogging of openings and filters
- Physical interference with mating parts
- Fouling of moving parts
The Trimble Nomad® 1050 tested for six hours at 23° C (73° F) and for six hours at 70° C (158° F) for Procedure I, blowing dust. It was then tested for Procedure II, blowing sand (2.2 g/m³) for 90 minutes per face, six faces total.
Trimble Kenai®, Yuma® 2, Nomad® 1050, Juno® T41 and Ranger™ 3 all passed the following tests:
- Procedure I: Blowing Dust
- Procedure II: Blowing Sand
Trimble Yuma® 2, Nomad®, Juno® T41 and Ranger™ are all either IP65, IP67, or IP68 certified (depending on model), meaning they are dust tight and protected against temporary immersion. The PG200 is IP65.