One of the unique features of both the Rapid RH L6 and the Rapid RH 5.0 Smart Sensors is the innovative design that sets the sensor directly into the concrete slab. This allows the sensor to have a “one-time” equilibration period that allows accurate readings without a constant re-equilibration period. The unique redundancy isolation ring system on each Smart Sensor seals it from ambient air in the drilled hole to ensure accurate readings every time.
The Rapid RH 5.0 Smart Sensor has been specifically designed to be reusable. This means that each 5.0 sensor that you install can be recovered and reused many times without damage to the sensor. Keep in mind that in order to ensure compliance with the ASTM F2170 standard, calibration must be checked within 30 days prior to use. Calibration checks require additional time and attention to perform, although the included EasyCare Calcheck device makes calibration checks as quick and easy as possible. The 5.0 reusable sensor is a good choice for building inspectors or others who do a lot of RH testing.
In the case of the L6 Smart Sensor, however, it is not reusable. It is a convenient single-use sensor and is a great choice for most contractors, installers, and others who may not do a lot of RH testing. No calibration check is required when using the L6 sensor. Keep in mind that once the L6 Smart Sensor has been installed inside a concrete slab, removing it from the test hole increases the risk of damaging the sensor or the first stage ring system. The reality is that the L6 sensor is not designed for re-use and trying to do so would require recalibration of each L6 sensor before it could be used again.
Fortunately, the cost per test of the Rapid RH L6 system is so reasonable that reuse or recovery is simply not cost-effective.