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cFP-RTD-124, 4-Wire, 8-Channel, Temperature Input Module for Compact FieldPoint
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National Instruments cFP-RTD-124 Temperature Input Module for Compact FieldPoint
The cFP-RTD-124 (part number 777318-124) is an 8-channel temperature input module manufactured by National Instruments. This module is designed to measure temperature from RTD (Resistance Temperature Detector) sensors in the Compact FieldPoint distributed I/O system. It's suitable for 2- and 4-wire RTDs with applications such as process temperature control, environmental chambers, and device testing. The NI cFP-RTD-124 can measure and linearize signals as well, providing direct resistance measurements with a 400 Ω range. The module offers automatic linearization to engineering units °C, °F, and K.
The NI cFP-RTD-124 can be calibrated to ensure reliable and precise analog measurements. The resolution is 16-bit. The backplane provides the operating power to the module. RTD types are detailed by nominal resistance at 0 and material composition. It is also characterized by °C and TCR. The NI cFP-RTD-124 can measure the temperature of platinum RTDs directly. This module can also provide inputs for 100 Ω platinum RTDs. These RTDs are generally referred to as PT100 RTDs. The device has a power requirement of 350 mW.
The NI cFP-RTD-124 has analog-to-digital conversion. The ADC is the Delta-sigma type. Each channel has software selectable input signal ranges. It has a 3 Hz signal input bandwidth. Each channel is updated once a second.
The NI device weighs 3.7 oz and has a recommended operating temperature range of -40 to 70°C; a storage temperature range of -55 to 100°C; a non-condensing humidity range of 10 to 90% RH; and a random and sinusoidal operating vibration of 5 grms and 5 g, respectively—all at a frequency range of 10 to 500 Hz. The cFP-RTD-124 is designed to conform to industry standards for the safe use of electrical equipment, such as the following: - EN 61010-1, IEC 61010-1, - UL 3121-1, and - CAN/CSA C22.2 No. 1010.1.
| Model | cFP-RTD-124 |
|---|---|
| Manufacturer | National Instruments |
| Part Number | 777318-124 |
| Type | Temperature Input Module for Compact FieldPoint |
| Input Channels | 8 |
| Resolution | 16-bit Delta-sigma ADC |
| Input Type | 2- and 4-wire RTD Resistance Input |
| Channel Updates | Once a second |
| Signal Bandwidth | 3 Hz |
| Warranty | 2-3 Year Warranty |
| cFP-RTD-124 Manual | User Manual and Maintenance Manual Available for Download |
| Price | Request a quote |
Associated part numbers for cFP-RTD-124:
National Instruments cFP-RTD-124 Frequently Asked Questions
Question: What should I do if my NI cFP-RTD-124 is measuring resistance incorrectly and getting a high degree of variance in the temperature reading?
Answer: If your Temperature Input Module is measuring resistance and temperature incorrectly, it sounds like the RTDs are not wired properly, with values going into the wrong modules.
Question: What is the all-channel update period for the cFP-RTD-124?
Answer: The all-channel update period for the Temperature Input Module is 1.08 s (0.93 Hz).
Question: Is the cFP-RTD-124 appropriate for high noise levels?
Answer: The Temperature Input Module is a 4-wire RTD and is well-suited for applications with high noise levels or long signal wires. The module includes built-in 50 Hz and 60 Hz noise filtering.
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