All Tunnel Sensors monitors have a comprehensive range of output and communication options including digital relays, current outputs and RS485 Modbus RTU. However, in many applications there is a requirement for multiple instruments to interface with the tunnel through a common control unit.
It is for this reason that Tunnel Sensors offer their TSCU-R (Tunnel Sensors Control Unit-Rugged). The TSCU-R can connect and communicate with up to eight compatible instruments presenting the gathered data to the tunnel SCADA or ventilation system.
The TSCU-R can be mounted in the tunnel bore itself, but at a level and location that is more easily accessible so operators can gain access to it more readily. An external USB connection allows operators to directly connect a laptop PC (running the supplied Utility software) to the TSCU-R, which then allows the operator to interrogate and control not only the TSCU-R itself, but also any connected instrument. This “walk up comms” feature is of great benefit during installation, commissioning and ongoing instrument servicing.
The Tunnel Sensors CTU (Combined Terminal Unit) is a rugged junction box / power supply that can be installed locally at each measurement point. The CTU is fully customisable with a wide range of terminal packs available, including OVP modules.
Example installation showing 6 tunnel monitors connected to 1 TSCU-R. With the CTU providing local monitor 24Vdc power and termination.
Example installation showing 6 tunnel monitors connected to 3 TSCU-R’s. In this example the TSCU-R is providing 24Vdc power to the monitors directly – removing the need for separate power supplies and junction boxes.
The flexibility of the TSCU-R and CTU offer almost limitless system configurations which can be specified to suit individual applications and customer requirements.
