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777459-18, 2 Analog Input, SCC-RTD01 Resistance Temperature Detector Input Module
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March 2025
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January 2025
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May 2025
Gregg Flecki**** Verified Buyer
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January 2025
Carol Zimme**** Verified Buyer
" Very responsive and helpful, competitive pricing. Good source! "
July 2025
Andrew Gar**** Verified Buyer
" Amazing to work with and had my order within 1 week after purchasing with all NI certs and data that were needed. "
March 2025
Said Sai**** Verified Buyer
" Competent contact for highly specialized components. The support team is very knowledgeable. Many thanks for the help and the fast shipping! "
January 2025
Bob C**** Verified Buyer
" Jason was able to get our emergency situation taken care of quickly and professionally. "
May 2025
Gregg Flecki**** Verified Buyer
" Great service and great products. This is my 2nd time using Apex Waves, truly impressed. "
January 2025
National Instruments 777459-18 Resistance Temperature Detector Input Module
Part Number 777459-18 is the identifying part number for the National Instruments SCC-RTD01 Resistance Temperature Detector Input Module. The 777459-18 features two differential analog input channels supporting an input range of ±400 mVDC with a fixed gain of 25 on each channel. The input impedance is 2 MΩ in parallel with 4.7 nF during normal powered-on and 20 kΩ (minimum) during powered-off and overload state. Furthermore, it uses a 3-pole Butterworth lowpass filter whose -3 dB cutoff frequency is 30 Hz.
The 777459-18 operates up to 2 RTD input signals from a 2,3 or 4-wire Resistance Temperature Detector (RTD). The module weighs 24 g ( 0.8 oz) and supports a field-wiring diameter of range 28 to 16 AWG. The module features a 20-pin right-angle male connector and a 6-pin screw terminal for I/O purposes. The maximum working voltage ( signal plus common mode) of each input should remain within ±12 V of ground.
The 777459-18 features an amplifier with a common-mode rejection ratio of 110 dB at 60 Hz and an output range of ±10 V. Likewise, it has a single excitation channel with a constant-current source of 1 mA, ± 0.4 μA. The module requires a maximum analog power of 135 mW, which equates to a maximum current draw of 4.5 mA when supplied with a +15 V and a -15V source. On the other hand, the maximum digital power required is 153 mW, which equates to a maximum current draw of 30.6 mA at +5V.
The 777459-18 has a recommended operating temperature range of 0 to 50 °C at a relative humidity of 5 to 90 %. On the other hand, it can be stored at temperatures between -20 to 70 °C. Note that the module is designed only for indoor use and may require mounting inside a sealed enclosure for outdoor use. Furthermore, the module is to be operated within a maximum altitude of 2000 m. The input module meets the requirements of the safety for electrical equipment for measurement, control, and laboratory use as per the following standards; IEC 61010-1, EN-61010-1, UL 61010-1, CAN/CSA-C22.2 No. 61010-1.
| Part Number | 777459-18 |
|---|---|
| Model Name | SCC-RTD01 |
| Part Type | Resistance Temperature Detector Input Module |
| Number of Analog Input Channels | 2 (differential) |
| Filter Type | 3-pole Butterworth lowpass filter with -3dB cutoff frequency at 30 Hz |
| Analog Input Range | ±400 mVDC (fixed gain of 25 on each channel) |
| Power Requirement | Analog Power: 135 mW (max) Digital Power: 153 mW (max) |
| Input Overvoltage Protection | ±42 VDC powered on; ±25 VDC powered off |
| Field-Wiring Diameter | 28 to 16 AWG |
| I/O connectors | 20-pin right-angle male connector, and 6-pin screw terminal |
Associated part numbers for 777459-18:
777459-18 PDF Manuals
SCC-RTD01RESISTANCETEMPERATUREDETECTORUSERGUIDEANDSPECIFICATIONS.PDF
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