The Larson Davis PRM2103 has been designed to be used with an environmental shroud for portable or permanent outdoor use in a wide range of weather conditions. The PRM2103 combines the cost savings of a standard preamplifier with features for unattended
monitoring and an inexpensive shroud to create a product that is ideal for remote sound level measurement.
New in the PRM2103 is an automatic calibration check that checks five different frequencies all at the same time which enables better
detection of any failure. When used with the Model 831 sound level meter, the acoustic response can be selected as free-field, random or 90 degree
using a simple setting on the sound level meter. Because of this flexibility, only one preamplifier is necessary and there is no need to use different microphones for different fields.
Because
field visits to a remote monitor can be expensive and time consuming, the PRM2103 has been designed to require no routine maintenance. It includes a built-in humidity and temperature sensor and can automatically turn on an internal heater when there is a risk of condensation. All this has been accomplished while keeping power usage low (< 2 mA with heater off) so that the PRM2103 is an excellent solution for battery powered applications.
