National Instruments NI 9219 - Manuals

© National Instruments Corp. 5 NI 9219 Operating Instructions Caution Do not remove modules unless power has been switched off or the area is known to be nonhazardous. Caution Substitution of components may impair suitability for Class I, Division 2. Caution For Zone 2 applications, install the syst...

NI 9219 Operating Instructions 6 ni.com Wiring the NI 9219 The NI 9219 has four 6-terminal connectors that provide connections for four analog input channels. Connect the positive signal of the signal source to the positive input signal terminal (HI) and the negative signal of the signal source to t...

© National Instruments Corp. 7 NI 9219 Operating Instructions Table 1. Signal Names Module Terminal Signal Name Signal Description 1 T+ TEDS Data 2 T– TEDS COM 3 EX+/HI * Positive excitation or input signal 4 HI Positive input signal 5 EX– /LO * Negative excitation or input signal 6 LO Negative inpu...

NI 9219 Operating Instructions 8 ni.com Table 2. Terminal Assignments Mode Terminal 1 2 3 4 5 6 Voltage T+ T – — HI LO — Current T+ T – HI — LO — 4-Wire Resistance T+ T – EX+ HI EX – LO 2-Wire Resistance T+ T – HI — LO — Thermocouple T+ T – — HI LO — 4-Wire RTD T+ T – EX+ HI EX – LO 3-Wire RTD T+ T ...

© National Instruments Corp. 9 NI 9219 Operating Instructions Connecting Wires to the NI 9219 Connectors Use a flathead screwdriver with a blade smaller than 2.3 × 1.0 mm (0.09 × 0.04 in.) to connect wires to the detachable spring-terminal connectors. Insert the screwdriver into a spring clamp activ...

NI 9219 Operating Instructions 10 ni.com Wiring TEDS Channels The NI 9219 supports only Class II TEDS sensors. Connect the two TEDS lines to TEDS Data (T+) and TEDS COM (T–) and ensure that neither T+ nor T– is tied in common to any of the signal inputs (terminals 3 through 6) on the NI 9219. Visit ...

© National Instruments Corp. 11 NI 9219 Operating Instructions Figure 3. Connecting a Grounded Signal Source to the NI 9219 Figure 4. Connecting a Floating Signal Source to the NI 9219 +– Twisted-Pair Wiring V SIG V SIG Ground Reference Signal Source Shielding HI LO NI 9219 +– Twisted-Pair Wiring V ...

© National Instruments Corp. 13 NI 9219 Operating Instructions Figure 5. Input Circuitry for One Channel Voltage and Current Modes In Voltage and Current modes, connect the signal source to the NI 9219 across the HI and LO terminals. The current is computed from the voltage that the ADC measures acr...

NI 9219 Operating Instructions 14 ni.com 4-Wire Resistance and 4-Wire RTD Modes 4-Wire Resistance and 4-Wire RTD modes source a current, which varies based on the resistance of the load, between the EX+ and EX– terminals. The measured resistance is computed from the resulting voltage reading. These ...

© National Instruments Corp. 15 NI 9219 Operating Instructions lead wires have the same resistance. A gain of 2x is applied to the voltage across the negative lead wire and the ADC uses this voltage as the negative reference to cancel the resistance error across the positive lead wire. Refer to Figu...

NI 9219 Operating Instructions 16 ni.com for lead wire resistance. Refer to Figure 9 for an illustration of the connections. Figure 9. Connections in 2-Wire Resistance and Quarter-Bridge Modes Half-Bridge and Full-Bridge Modes Half-Bridge and Full-Bridge modes use the internal voltage excitation to ...

© National Instruments Corp. 17 NI 9219 Operating Instructions Figure 10. Connections in Half-Bridge and Full-Bridge Modes Thermocouple Mode In Thermocouple mode, connect the positive end of the thermocouple to HI and the negative end of the thermocouple to LO. This mode uses the ±125 mV range of th...

NI 9219 Operating Instructions 18 ni.com environment and avoid placing heat sources near the module or its connectors. Refer to the Specifications section for more information about accuracy. The NI 9219 does not support open thermocouple detection. Refer to Figure 11 for an illustration of the conn...

© National Instruments Corp. 19 NI 9219 Operating Instructions circuit is open, make sure no more than ±60 V is sourced across the switch. Open Contact mode is supported only in CompactRIO systems. Refer to Figure 12 for an illustration of the connections. Figure 12. Connections in Open Contact Mode...

NI 9219 Operating Instructions 20 ni.com Binary Data NI 9219 modules in the system return calibrated binary data when used in a CompactRIO chassis. For these modules, you can convert the data to engineering units in software. Refer to the software documentation for information about converting data....

© National Instruments Corp. 21 NI 9219 Operating Instructions Input Characteristics Number of channels .......................... 4 analog input channelsADC resolution ................................. 24 bitsType of ADC..................................... Delta-sigma (with analog prefiltering) Sa...

NI 9219 Operating Instructions 22 ni.com Conversion time, no channels in TC mode High speed .................................. 10 ms for all channelsBest 60 Hz rejection ................... 110 ms for all channelsBest 50 Hz rejection ................... 130 ms for all channelsHigh resolution ..........

© National Instruments Corp. 23 NI 9219 Operating Instructions Input impedance Voltage and Digital In modes( ±60 V, ±15 V, ±4 V ) ..................... 1 M Ω Current mode .............................. < 40 Ω All other modes .......................... >1 G Ω Accuracy Mode, Range Gain Error (% ...

© National Instruments Corp. 25 NI 9219 Operating Instructions Stability Mode, Range Gain Drift (ppm of Reading/°C) Offset Drift (ppm of Range/°C) Voltage, ± 60 V ±20 ±0.2 Voltage, ± 15 V ±20 ±0.8 Voltage, ± 4 V ±20 ±3.2 Voltage, ± 1 V ±10 ±0.2 Voltage/Thermocouple, ± 125 mV ±10 ±1.6 Current, ± 25 m...

NI 9219 Operating Instructions 26 ni.com Input noise in ppm of Range rms Full-Bridge, ± 62.5 mV/V ±3 ±20 Full-Bridge, ± 7.8 mV/V ±3 ±20 Mode, Range Conversion Time High speed Best 60 Hz rejection Best 50 Hz rejection Highreso- lution Voltage, ±60 V 7.6 1.3 1.3 0.5 Voltage, ±15 V 10.8 1.9 1.9 0.7 Vol...

NI 9219 Operating Instructions 28 ni.com Input bias current .............................. <1 nAINL.................................................... ±15 ppmCMRR ( f in = 60 Hz) .......................... >100 dB NMRR Best 60 Hz rejection ................... 90 dB at 60 HzBest 50 Hz rejectio...

© National Instruments Corp. 29 NI 9219 Operating Instructions Excitation level for Resistance, RTD, and Quarter-Bridge modes MTBF ............................................... 384,716 hours at 25 °C; Bellcore Issue 6, Method 1, Case 3, Limited Part Stress Method Note Contact NI for Bellcore MTBF ...

NI 9219 Operating Instructions 30 ni.com Thermal dissipation (at 70 °C) Active mode ............................... 625 mW maxSleep mode ................................. 25 μ W max Physical Characteristics If you need to clean the module, wipe it with a dry towel.Spring-terminal wiring................

© National Instruments Corp. 31 NI 9219 Operating Instructions Channel-to-earth ground Continuous ........................... 250 VAC, Measurement Category II Withstand ............................. 2300 VAC, verified by a 5 s dielectric withstand test Measurement Category II is for measurements per...

NI 9219 Operating Instructions 32 ni.com by module number or product line, and click the appropriate link in the Certification column. Hazardous Locations U.S. (UL) .......................................... Class I, Division 2, Groups A, B, C, D, T4;Class I, Zone 2,AEx nC IIC T4 Environmental Natio...

© National Instruments Corp. 33 NI 9219 Operating Instructions Maximum altitude............................. 2,000 m Pollution Degree (IEC 60664) .......... 2 Shock and Vibration To meet these specifications, you must panel mount the system. Operating vibration Random (IEC 60068-2-34)......... 5 g r...

NI 9219 Operating Instructions 34 ni.com Note For EMC compliance, operate this device with shielded cabling. CE Compliance This product meets the essential requirements of applicable European directives, as amended for CE markings, as follows: • 73/23/EEC; Low-Voltage Directive (safety) • 89/336/EEC...

© National Instruments Corp. 35 NI 9219 Operating Instructions Calibration You can obtain the calibration certificate and information about calibration services for the NI 9219 at ni.com/calibration . Calibration interval ........................... 1 year Where to Go for Support The National Instru...