This document explains how to connect to the NI 9218. In this document, the NI 9218 with LEMO and the NI 9218 with DSUB are referred to inclusively as the NI 9218. Before you begin, complete the software and Note hardware installation procedures in your chassis documentation.
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Such voltage measurements include signal levels, special equipment, limited-energy parts of equipment, circuits powered by regulated low-voltage sources, and electronics. Do not connect the NI 9218 to signals or use Caution for measurements within Measurement Categories II, III, or IV.
Safety Guidelines for Hazardous Locations The NI 9218 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous locations; Class I, Zone 2, AEx nA IIC T4 and Ex nA IIC T4 hazardous locations; and nonhazardous locations only.
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Zone 2 hazardous locations, in ambient temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI 9218 in Gas Group IIC hazardous locations, you must use the device in an NI chassis that has been evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
EMC performance is attained. Preparing the Environment Ensure that the environment in which you are using the NI 9218 meets the following specifications. Operating temperature -40 °C to 70 °C...
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NI 9218 with LEMO only. Optional sensor excitation. Tie to pin 3. TEDS Class 1 data connection. TEDS Class 2 data connection. 14 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
Measurement Types The NI 9218 provides built-in support for the following measurement types. • ±16 V • ±65 mV • Full-Bridge • IEPE NI recommends using the NI 9982 screw-terminal adapter when using built-in measurement types on the NI 9218.
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VEX+ VEX- NI 9218 The NI 9218 provides optional 12 V sensor excitation. To use the 12 V excitation, connect a 9 VDC to 30 VDC power supply to Vsup, connect the excitation terminals on your sensor to EX+/ EX-, and enable 12 V excitation in your software.
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You must connect AI- to EX- on the NI 9218. • The NI 9218 provides optional 12 V sensor excitation. To use the 12 V excitation, connect a 9 VDC to 30 VDC power supply to Vsup, connect the excitation terminals on your 18 | ni.com | NI 9218 Getting Started Guide...
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– – NI 9218 • The NI 9218 provides 2 V excitation to loads ≥120 Ω or 3.3 V excitation to loads ≥350 Ω. • The NI 9218 provides optional connections for remote sensing (RS) and shunt calibration (SC). Remote sensing 20 | ni.com | NI 9218 Getting Started Guide...
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• The NI 9218 provides an excitation current for each channel that powers IEPE sensors. • AI+ provides DC excitation and AI- provides the excitation return path. Related Information NI 9982 IEPE Connection Pinout on page 38 ±20 mA Connections...
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Connecting ±20 mA signals requires the NI 9983. • The NI 9218 provides optional 12 V sensor excitation. To use the 12 V excitation, connect a 9 VDC to 30 VDC power supply to Vsup, connect the excitation terminals on your sensor to EX+/EX-, and enable 12 V excitation in your software.
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Connecting ±60 V signals requires the NI 9987. Related Information NI 9987 Pinout on page 42 24 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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• Connecting half bridges requires the NI 9986. • The NI 9218 provides 2 V excitation to half bridges of ≥240 Ω total or 3.3 V excitation to half bridges of ≥700 Ω total. • The NI 9218 provides optional connections for remote sensing (RS) and shunt calibration (SC).
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TEDS Support TEDS Class 1 sensors provide an interface for transferring information from sensors. The NI 9218 with LEMO, NI 9218 28 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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NI 9218 Connection Guidelines Make sure that devices you connect to the NI 9218 are compatible with the module specifications. Custom Cabling Guidelines Observe the following guidelines when using the NI 9988 solder cup connector adapter or the LEMO crimp connector (784162-01) to create custom cables.
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What to Do 1. Unlock the measurement adapter housing/cover. 2. Slide the measurement adapter housing/cover to access the screw terminals. 32 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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The ground terminals on a measurement adapter are connected to chassis ground when the measurement adapter is connected to the NI 9218 and the NI 9218 is installed in a chassis. 34 | ni.com | NI 9218 Getting Started Guide...
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Pins 3a and 3b are tied together on the NI 9982. Related Information ±65 mV Connections on page 18 36 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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NI 9982D/9982L Pins 3a and 3b are tied together on the NI 9982. Related Information IEPE Connections on page 21 38 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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Pins 3a and 3b are tied together on the NI 9987. Related Information ±60 V Connections on page 23 42 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
You can obtain the DoC for your product by visiting ni.com/certification. If your product supports calibration, you can obtain the calibration certificate for your product at ni.com/calibration. 44 | ni.com | NI 9218 Getting Started Guide hnology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www...
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