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FP-RTD-122

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FP-RTD-122, 8-Channel, RTD and Resistance Input Module

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National Instruments FP-RTD-122 RTD and Resistance Input Module

The NI FP-RTD-122 (Part Number: 777518-122) is a versatile RTD and Resistance Input Module for FieldPoint. This device can be used to measure 3-wire RTDs in a broad range of applications, such as process control, device testing, and temperature chamber control. For sensor excitation, the FP-RTD-122 utilizes a stable current source. Moreover, it comes with an integrated microcontroller that scales the measurements to specified temperature units. With this module, the user will be able to configure each channel to get scaled data in temperature units (°C, °F, or °K) or resistance.

This RTD and Resistance Input Module comes in a 3-wire configuration. This advanced configuration helps eliminate lead wire resistance related measurement errors. The National Instruments FP-RTD-122 features optical bank isolation. As far as its input characteristics are concerned, this model comes equipped with a Delta-sigma ADC, 50/60 Hz rejection filters, and has eight inputs. This RTD and Resistance Input Module can handle inputs for 100 and 1,000 Ω platinum resistance temperature detectors (RTDs) and can be used for direct measurement of resistance in 400 Ω and 4000 Ω ranges.  

Each of the eight channels of the NI FP-RTD-122 uses an EX+ terminal to pulse out a 0.25 mA excitation current. The pulsed excitation current returns employing the COM terminal. The SENSE terminal gauges do not only gauge resistance but compensate for lead resistance related measurements errors also. This module has two green POWER and READY LEDs. AS the user inserts the module into a FieldPoint terminal base, the POWER LED turns on and communicates to the network module about the module’s presence.

ModelFP-RTD-122
ManufacturerNational Instruments
Part Number777518-122
TypeRTD and Resistance Input Module
Input Channels8
ADC Resolution16 bits
ADC TypeDelta-sigma
Power from Network Module350 mW
Weight4.8 oz.
FP-RTD-122 ManualUser Manual and Maintenance Manual Available for Download
PriceContact a sales representative for a quote.

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National Instruments FP-RTD-122 Frequently Asked Questions

 

Question: What is the update rate of the FP-RTD-122?

 

Answer: The update rate of the FP-RTD-122 is 1.08 s for every channel.

 

Question: What is the input bandwidth of the NI FP-RTD-122?

 

Answer: The input bandwidth of the NI FP-RTD-122 is 3 Hz.

 

Question: What is the value for the overvoltage protection of the FP-RTD-122?

 

Answer: The value for the overvoltage protection of the FP-RTD-122 is 2,300 Vrms.

 

Question: Does the NI FP-RTD-122 automatically recognize RTD types?

 

Answer: No, the NI FP-RTD-122 does not automatically recognize RTD types. The user must configure every channel for the RTD type linked to it.

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Common Typos:

CP-RTD-122, RP-RTD-122, FP-RTS-122, FP-RTF-122, FP-RTV-122

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