777519-03
National Instruments
777519-03
National Instruments
Description
Part number 777519-03, the National Instruments FP-TB-3 FieldPoint Isothermal Terminal Base is designed for thermocouples with 18 screw terminals for precise measurement. This terminal base features dedicated C channel terminals and a maximum current limit of 10 A, making it ideal for use with FP-TC-120 modules and other I/O modules that do not require external power.
777519-03 FP-TB-3 Isothermal Terminal Base, Screw Term (Not for New Design) National Instruments FP-TB-3 FieldPoint Isothermal Terminal Base is specifically designed for thermocouples with 18 screw terminals. Manufactured by National Instruments, this terminal base can be identified by part number 777519-03. Out of the 18 terminals, 16 are numbered while the remaining two are dedicated C channel terminals. The maximum total current allowed through the V and C terminals is 10 A, with the recommendation of using individual C terminals for current draws exceeding 3 A. The FP-TB-3 is ideal for use with FP-TC-120 modules for precise thermocouple measurement, and can also be used with I/O modules that do not require external power and utilize terminals 1 to 16. The isothermal construction of this terminal base reduces thermal gradients on I/O terminals, enhancing the accuracy of thermistor used for cold junction compensation. It is important to consider adjacent FieldPoint modules when evaluating thermal gradients across terminals.
| Made By | National Instruments |
|---|---|
| Part Number | 777519-03 |
| Product Type | FP-TB-3 Isothermal Terminal Base, Screw Term |
| Manufacturer | National Instruments |
| Number of Terminals | 18 screw terminals (16 numbered, 2 dedicated C channels) |
| Maximum Current | 10 A across V and C terminals; individual C terminals required over 3 A |
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Question:
What is the purpose of the National Instruments 777519-03 FP-TB-3 Isothermal Terminal Base?
Answer:
The National Instruments 777519-03 FP-TB-3 Isothermal Terminal Base is designed for thermocouples and features 18 screw terminals to connect and manage thermocouple sensors. It is used for precise thermocouple measurement and can be paired with FP-TC-120 modules, as well as other I/O modules that do not require external power.
Question:
How many terminals does the 777519-03 FP-TB-3 have, and how are they designated?
Answer:
The 777519-03 FP-TB-3 has 18 screw terminals, with 16 numbered for regular connections and two dedicated as C channel terminals for current.
Question:
What is the maximum total current that can be passed through the V and C terminals of the FP-TB-3?
Answer:
The maximum total current that can pass through the V and C terminals of the FP-TB-3 is 10 A. However, it is recommended to use individual C terminals for current draws that exceed 3 A.
Question:
Why is the isothermal construction of the FP-TB-3 important?
Answer:
The isothermal construction of the FP-TB-3 is important because it reduces thermal gradients on the I/O terminals, which enhances the accuracy of thermistor used for cold junction compensation when measuring temperatures.
Question:
What should be considered when evaluating thermal gradients across terminals of the FP-TB-3?
Answer:
When evaluating thermal gradients across the terminals of the FP-TB-3, it is important to consider the adjacent FieldPoint modules as they can affect the thermal gradients and potentially the accuracy of temperature measurements.