Features
- Connects 8 sensors to any Sensoray smart sensor interface board
- Supports 4-wire sensor connections
- Screw terminals for easy field wiring
- Cold-junction sensor for thermocouples
- Small size-4.6" by 2"
The SENSORAY Model 7409TB provides a low-cost interface between sensor field wiring and any Sensor A/D or D/A board. It simplifies field wiring by breaking out flat cable to screw terminals.
Thermocouple Reference
A temperature sensor on the 7409TB supplies a dedicated ninth channel with a measure of the temperature at the cold end of thermocouples. 7409TB boards may be painlessly interchanged because each cold-junction sensor is individually calibrated.
Field Connections
Five screw terminals are available for each channel: two for voltage measurement, two for sensor excitation, and one for a shield. Field wires need only be stripped of insulation, inserted into the terminal receptacles, and the screw tightened for a secure connection. A 40-pin header on the back side of the board facilitates panel mounting.
Mechanical
The board is rigidly constructed from 1/8-inch thick FR-4 material to prevent flexing caused by heavy gauge field wires.
Specifications
| Input power, excluding output drive current |
+12 to 15 VDC (at 30 mA)
5 VDC (at 40 mA) |
| Operating temperature |
-25 to +85 °C |
| DAC resolution |
12 bits |
| Channel update rate |
10 kHz per channel |
| Output linearity |
0.03% |
| Output Modes |
|---|
| Voltage |
+10 V |
| Current |
4 to 20 mA |
| Special (configured at factory) |
0 to 5 V
0 to 10 V |
