Description
The FP-TB-3 Isothermal Terminal Base, Screw Term is identified by its part number 186424A-01 (777519-03) and falls under the category of FieldPoint. This model, known as FP-TB-3, is designed by National Instruments and is a specialized FieldPoint Isothermal Terminal Base made specifically for thermocouples. It’s important to note that this terminal base is not recommended for new designs.
This terminal base features 18 screw terminals, with 16 numbered and 2 dedicated channel terminals, labeled as C channel terminals. It supports a maximum current of 10 A for both V and C terminals. For current draw considerations, it is recommended to use one terminal for the return path if the current draw is less than 3 A; however, if over 3 A, individual C terminals should be utilized.
The FP-TB-3 is compatible with the FP-TC-120 module, enhancing its utility in various applications. Its construction is isothermal, which plays a crucial role in reducing thermal gradients on I/O terminals. This feature is critical for maximizing the preciseness of thermistors used for cold junction compensation. The effectiveness of this design is quantified through thermal gradient evaluation, which is determined by the higher of the amounts of heat dissipated by each of the adjacent modules divided by 11 W/°F.
| Specification | Detail |
|---|---|
| Part Number | 186424A-01 (777519-03) |
| Category | FieldPoint |
| Model | FP-TB-3 |
| Description | FP-TB-3 Isothermal Terminal Base, Screw Term (Not for New Design) |
| Manufacturer | National Instruments |
| Type | FieldPoint Isothermal Terminal Base for thermocouples |
| Screw Terminals | 18 (16 numbered, 2 dedicated channel terminals) |
| Channel Terminals | C channel terminals |
| Maximum Current (V and C terminals) | 10 A |
| Current Draw Consideration | Use one terminal for return path if current draw is < 3 A; Use individual C terminals if over 3 A |
| Compatible Module | FP-TC-120 |
| Construction | Isothermal |
| Feature | Reduces thermal gradients on I/O terminals to maximize preciseness of thermistor used for cold junction compensation |
| Thermal Gradient Evaluation | Higher of the amounts of heat dissipated by each of the adjacent modules divided by 11 W/°F |
