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National Instruments Corporation

3

SCXI-1327 Installation Guide

Number 1 and 2 Phillips-head screwdrivers

1/8 in. flathead screwdriver

Long-nose pliers

Wire cutter

Wire insulation stripper

Safety Information

Cautions

Do

not

operate the device in an explosive atmosphere or where there may be

flammable gases or fumes.

Keep away from live circuits. Do

not

remove equipment covers or shields unless you are

trained to do so. If signal wires are connected to the device, hazardous voltages can exist
even when the equipment is turned off. To avoid a shock hazard, do

not

perform procedures

involving cover or shield removal unless you are qualified to do so and disconnect all field
power prior to removing covers or shields.

Equipment described in this document must be used in an Installation Category II

1

environment per IEC 60664-1. This category requires local level supply mains-connected
installation.

Do

not

operate damaged equipment. The safety protection features built into this device

can become impaired if the device becomes damaged in any way. If the device is damaged,
turn the device off and do

not

use it until service-trained personnel can check its safety.

If necessary, return the device to National Instruments for service and repair to ensure that
its safety is not compromised.

Do

not

operate this equipment in a manner that contradicts the information specified in this

document. Misuse of this equipment could result in a shock hazard.

Do

not

substitute parts or modify equipment. Because of the danger of introducing

additional hazards, do

not

install unauthorized parts or modify the device. Return the

device to National Instruments for service and repair to ensure that its safety features are
not compromised.

When using the device with high common-mode voltages, you

must

insulate your signal

wires for the highest input voltage. National Instruments is

not

liable for any damages or

injuries resulting from inadequate signal wire insulation. Use only 26-14 AWG wire with
a minimum voltage rating of 300 V and a temperature value of 60 °C for measuring up
to 300 V.

1

Category II refers to local-level power distribution, such as that provided by a standard wall outlet.

Summary of Contents for SCXI-1327

Page 1: ...XI 1327 channel has a precision 100 1 resistive voltage divider that you can use to measure voltages of up to 300 Vrms or 300 VDC with the SCXI 1120 SCXI 1120D SCXI 1121 SCXI 1125 or SCXI 1126 You can...

Page 2: ...ic text denotes variables emphasis a cross reference or an introduction to a key concept This font also denotes text that is a placeholder for a word or value that you must supply monospace Text in th...

Page 3: ...n become impaired if the device becomes damaged in any way If the device is damaged turn the device off and do not use it until service trained personnel can check its safety If necessary return the d...

Page 4: ...ational Instruments is not liable for any damages or injuries resulting from inadequate safety earth ground connections Do not loosen or re orient the safety ground lug hardware when connecting the sa...

Page 5: ...nnect the signal to the terminal block perform the following steps referring to Figures 1 and 2 as necessary 1 Unscrew the top cover screws and remove the top cover 2 Loosen the strain relief screws a...

Page 6: ...ning You can add insulation or padding if necessary Note When connecting your signals to the SCXI 1327 follow the labeling on the SCXI 1327 for the appropriate module as indicated in Figure 2 1 Top Co...

Page 7: ...5 7 in lb 8 Connect the safety earth ground to the safety ground lug Refer to the Safety Information section for connection information 9 Reinstall the strain relief bar and tighten the strain relief...

Page 8: ...rushing off light dust with a soft nonmetallic brush Remove other contaminants with deionized water and a stiff nonmetallic brush The unit must be completely dry and free from contaminants before retu...

Page 9: ...r 100 1 setting Attenuation ratio temperature drift 15 ppm C Resistance between CH and CH terminals 1 1 attenuation setting Determined by attached module 100 1 attenuation setting 1 M Coupling DC only...

Page 10: ...mponents None Safety earth ground lugs 1 Strain relief Strain relief bar at terminal block entrance Mechanical Dimensions 17 8 by 7 94 by 3 0 cm 7 0 by 3 125 by 1 2 in Weight 200 g 7 oz Environmental...

Page 11: ...to 50 C Converting a Thermistor Voltage to a Temperature National Instruments software can convert a thermistor voltage to the thermistor temperature for the circuit diagram shown in Figure 3 In LabVI...

Page 12: ...to the SCXI 1327 For more information about channel string arrays and the SCXI channel addressing syntax see the LabVIEW Measurements Manual Note This section is not applicable to the SCXI 1126 With...

Page 13: ...ead this section to operate the SCXI 1327 The circuit diagram in Figure 3 is optional information that you can use if you want more details about the SCXI 1327 temperature sensor Figure 3 Temperature...

Page 14: ...e searched the technical support resources on our Web site and still cannot find the answers you need contact your local office or National Instruments corporate For telephone support in the United St...

Page 15: ......

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