- Connects 8 sensors to any SENSORAY smart sensor interface board
- Supports 4-wire sensor connections
- Screw terminals for easy field wiring
- Eight removable terminal blocks
- DIN rail mountable
- Cold-junction transducer for thermocouples
- Prototyping area for custom circuitry
SENSORAY's model 7409TC and 7409TDIN termination boards make it quick and easy to connect sensors to any of our Smart A/D sensor interfaces. Both models have removable screw terminal blocks, a temperature sensor, a generous prototyping area, and special signal conditioning area circuitry for thermocouples. The 7409TC is designed for panel mounting, whereas the 7409TDIN can be mounted in seconds by snapping it onto a DIN rail. Both models employ a 40-pin header to connect to the sensor interface board.
Each of eight sensor channels is supported by a removable terminal block that has five screw terminals: two for voltage input, two for sensor excitation, and one for shield. Field wires need only be stripped and secured to the terminal block.
An integral temperature sensor provides a reference signal for thermocouples. This sensor uses a dedicated input channel so that all eight sensor interface channels remain available for external sensors. The thermocouple reference sensor is factory calibrated so that termination boards may be painlessly interchanged.
A matrix of plated-through holes on 0.1-inch centers is available for custom circuitry such as attenuators, filters and isolation amplifiers. All sensor signals, as well as power, are conveniently brought to this area.
A thermocouple signal conditioner, consisting of a low-pass filter and open-sensor-detection circuit, may be connected to any channel by installing option shunts.