| WARNING When performing installation and maintenance procedures at the roadside, follow local and state legislation and regulations for road safety. |
| WARNING Follow local and state legislation and regulations on occupational safety. |
| WARNING When installing very long DRS511 cables, avoid high energy and high voltage power lines. They may cause interference. |
| CAUTION In airport installations, avoid installing the sensor in the touchdown area. |
| CAUTION Vaisala strongly recommends that only certified technicians install embedded sensors. |
| When installing sensors with a cable longer than 100 m (328 ft), uncoil the cable carefully to avoid getting it tangled. |
Install DRS511 on the wheel track from 1 to 3 mm (0.04 to 0.12 in) below the road or runway surface. This installation depth allows enough moisture to accumulate on top of the sensor to determine salt concentration, but not to collect water excessively.