The NexSens T-Node FR water temperature sensor utilizes an integral titanium thermistor secured in a protective housing for underwater deployments in fresh, brackish, or seawater. The sensors can be connected in series using UW underwater cables and suspended vertically in a water column or horizontally along a stream or riverbed. Double o-rings (both gland and face seals) ensure a reliable and watertight connection.
Temperature data is transmitted on the RS-485 Modbus RTU string bus. Additionally, the T-Node offers pass-through signals for SDI-12 and RS-232, allowing the user to connect other environmental measurement sensors along the string. This sensorBUS architecture has been designed so researchers can easily build and customize multi-point sensor strings and environmental monitoring networks.
The T-Node FR sensors feature a plug-and-play interface to NexSens SDL500 submersible data loggers and offshore data buoys. Data collection options include standalone, radio, cellular and Iridium satellite telemetry. NexSens iChart Software is a Windows-based program for interfacing both locally (direct-connect) and remotely (through telemetry) to an SDL500 data logger or network of data loggers. For connection to external data collection platforms, the T-Node FR sensor string can integrate directly with a 3rd party data collection platform via RS-485 Modbus RTU.
Figure 1: T-Node FR