The Vaisala Veriteq VL-2000-LRH (low relative humidity) loggers are specially-calibrated temperature and relative humidity data loggers offering 2% RH accuracy over the measurement range of 0 to 20% RH. Ideal for GxP and FDA-regulated environments, compliant with 21 CFR Part 11 requirements, these data loggers can help you map or monitor dry storage environments including ultra low humidity cabinets, desiccators, and dry boxes. They would also be good choices to monitor specimen drying processes, and the storage of reagents, forensic materials, DNA samples, and biological cultures.
The VL-2000-LRH Low Humidity data logger shares the same features as the Vaisala Veriteq VL-2000 Humidity & Temperature data logger, with the exception that the LRH unit has been specially configured and calibrated for optimized accuracy in ultra dry environments (0 to 20% RH).
The VL-2000-LRH is calibrated at three points: 0%, 11% and 20% RH. The 0% RH environment is achieved by placing a logger in an enclosed tube then purging the tube of moisture through the use of nitrogen gas. The 11% and 20% RH calibration points are achieved with the use of a two-pressure Thunder Scientific RH chamber.
To achieve the specified accuracy over the 0 to 20% RH range, measurement accuracy over 20% RH is adversely affected. Consequently, the VL-2000-LRH is not recommended for measurement applications in environments over 20% RH. For optimal long-term performance, the VL-2000-LRH must be stored in conditions less than 30% RH.
For more information, please contact us.