In-situ Level TROLL 400, Operator'S Manual, Page: 70 / 85

1-800-446-7488 70 www.in-situ.com
Cleaning and Maintenance
Overview
It is important for users to perform scheduled maintenance on their instruments to sustain the accuracy and longevity of the
probes and cables. The frequency of this maintenance depends on the characteristics of the deployment site, including
humidity levels and the degree of fouling.
Users should be aware of the conditions at their deployment sites and develop appropriate maintenance schedules to replace
desiccant, clean the instruments, and send in the instruments for factory calibration. Users should check instruments often
during the first portion of the deployment to determine the frequency of maintenance. General maintenance should be
performed as often as possible. Factory maintenance and calibration should be performed every 12 to 18 months.
Operating Considerations
The instrument has been designed to withstand harsh field conditions. However, as with any electronic instrument, it can be
permanently damaged if used outside its operating specifications.
Temperature
Review the instrument specifications to determine the operating range. Do not deploy instruments in such a way that ice may
form on or near the sensors or cable connections. Ice formation is a powerful expansive force that can over-pressurize the
sensor or otherwise cause damage that is not covered by the warranty.
Pressure Range
The instrument can withstand pressures of up to two times (2X) the rated range of the pressure sensor without damage,
although it may not read correctly at such pressure. If the pressure range is exceeded by 3X, the sensor will be destroyed.
Batteries
Internal batteries in the instrument are not user-replaceable. The approximate percentage remaining is displayed in Win-Situ
software or the Vu-Situ mobile app when the instrument is connected.
If batteries are completely exhausted, external power and battery pack options are available. See page 24.