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SCXI-1328 Installation Guide

8

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Temperature Sensor Circuit Diagram

You do not need to read this section to operate the SCXI-1328. The circuit 
diagram in Figure 3 is optional information you can use if you want more 
details about the SCXI-1328 temperature sensor.

Figure 3.  

Temperature Sensor Circuit Diagram

Technical Support Resources

NI Web Support

To provide you with immediate answers and solutions 24 hours a day, 
365 days a year, National Instruments maintains extensive online technical 
support resources. They are available to you at no cost, are updated daily, 
and can be found in the Technical Support section of our Web site at 

www.ni.com/support

Worldwide Support

National Instruments has offices located around the globe. Many branch 
offices maintain a Web site to provide information on local services. You 
can access these Web sites from 

www.ni.com/worldwide

For telephone support in the United States, dial 512 795 8248. For 
telephone support outside the United States, contact your local branch 
office:

Australia 03 9879 5166, Austria 0662 45 79 90 0, Belgium 02 757 00 20, 
Brazil 011 284 5011, Canada (Calgary) 403 274 9391, 
Canada (Ontario) 905 785 0085, Canada (Québec) 514 694 8521, 

+5 V

2.5 V

4.7 k 

1%

LM 4040
2.5 V
0.1%

5 k 
at 25˚ C

5 k 
0.1%

10 µF
16 V

0.1 µF

0.1 µF

-t˚

1

2

1

2

2

1

2

0.1 µF

1

2

MTEMP

Summary of Contents for SCXI-1328

Page 1: ...put connector The SCXI 1328 has a high precision thermistor and an aluminum isothermal plate to minimize the temperature gradients across the screw terminals when you measure thermocouples The termina...

Page 2: ...so denotes text that is a placeholder for a word or value that you must supply monospace Text in this font denotes text or characters that you should enter from the keyboard sections of code programmi...

Page 3: ...up to 300 V When connecting or disconnecting signal lines to the SCXI terminal block screw terminals make sure the lines are powered off Potential differences between the lines and the SCXI ground cr...

Page 4: ...tance and returns the thermistor temperature Alternatively you can use the following formulas T C TK 273 15 where TK is the temperature in kelvin a 1 295361 10 3 b 2 343159 10 4 c 1 018703 10 7 RT res...

Page 5: ...gnal wires through the strain relief opening You can add insulation or padding if necessary 4 Prepare your signal wire by stripping the insulation no more than 12 mm 5 Connect the wires to the screw t...

Page 6: ...er Lug 4 Mating Connector 5 Thumbscrew 6 Top Cover Screws 7 Top Cover 1 Screw Terminals 2 Berg Connector W1 3 Channel Labeling for the SCXI 1120 D 4 Channel Labeling for the SCXI 1121 2 7 3 6 4 5 1 Ba...

Page 7: ...C Repeatability 0 2 from 15 to 35 C Output 1 91 to 0 58 V from 0 to 55 C Common mode isolation Channel to channel 300 Vrms Channel to ground 300 Vrms Environment Operating temperature 0 to 50 C Stora...

Page 8: ...cost are updated daily and can be found in the Technical Support section of our Web site at www ni com support Worldwide Support National Instruments has offices located around the globe Many branch...

Page 9: ...6 427 Hong Kong 2645 3186 India 91805275406 Israel 03 6120092 Italy 02 413091 Japan 03 5472 2970 Korea 02 596 7456 Mexico D F 5 280 7625 Mexico Monterrey 8 357 7695 Netherlands 0348 433466 Norway 32 2...

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