iSite-HS
New Product for Structural Health Monitoring
Geocomp Products has introduced a new addition to its iSite product line. iSite is a suite of field data loggers designed to collect data from remote sensors used to monitor structural health. iSite units log data at any remote field location and transmit that data over wireless networks or Ethernet connections to any other location in the world. iSite-HS adds the capability for high speed monitoring applications where the user needs access to data from remote instrumentation quickly and inexpensively.

iSite-HS consists of standalone data loggers which take and store readings at programmed intervals up to 1,000 readings per second per channel. Units are networked with Ethernet connections. By connecting the units through a switch to a G3 cell modem, data can be streamed to a remote location at up to maximum speed of the modem or the maximum reading rate of the data loggers.

Alternatively, units may be connected to an onsite computer with WiFi modules attached to each data logger. Software operating on a networked workstation can receive data in a streaming mode and save it to files. The only limit to the number of data loggers placed into the network is communications bandwidth of the network to download the data. Any channel on any data logger can be remotely configured using the included software.

The iSite-HS system can be programmed to run multiple data logging sessions simultaneously. A common use of this option is to run one session to log readings of each sensor every hour over a long time period; then run a second session to take readings at a high sampling rate when any reading exceeds a threshold value.


iSite-HS inside pier of new I-10 Twin Span Bridge on Lake Pontchartrain in New Orleans, Louisiana.

Geocomp's iSite-HS system monitors
structural health of Boston's Tobin Bridge
High speed data logging can be controlled by reading on any sensor that exceeds a preset threshold value, an external trigger that sets one of the digital inputs high, or a preset start time. Each unit can be configured to save a window of data before and after an event, that is a reading that exceeds a set threshold value.

The iSite system is compatible with any
sensor with dc voltage output of up to
±2.5 volts, including strain gages. Each
data logger can excite and read up to
eight sensors. The unit provides sensor

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December 2009