National Instruments NI 9219 - page 24

NI 9219 Operating Instructions 24 ni.com

Cold-junction compensation

sensor accuracy................................. ±1°C typ

4-Wire and 3-Wire RTD, Pt 1000 ±0.1, ±0.5 ±240, ±640

4-Wire and 3-Wire RTD, Pt 100 ±0.1, ±0.5 ±2400, ±6400

Quarter-Bridge, 350 Ω±0.1, ±0.5 ±2400, ±6400

Quarter-Bridge, 120 Ω±0.1, ±0.5 ±2400, ±6400

Half-Bridge, ±500 mV/V ±0.03, ±0.07 ±300, ±450

Full-Bridge, ±62.5 mV/V ±0.03, ±0.08 ±300, ±1000

Full-Bridge, ±7.8 mV/V ±0.03, ±0.08 ±2200, ±8000

* 2-Wire Resistance mode accuracy depends on the lead wire resistance. This table

assumes 0 Ω of lead wire resistance.

Mode, Range

Gain Error

(% of

Reading)

Offset Error

(ppm of

Range)

Typ (25 °C, ±5°C),

Max (–40 to 70 °C)

Contents

Main Safety Guidelines Safety Guidelines for Hazardous Voltages Safety Guidelines for Hazardous Locations Special Conditions for Marine Applications Wiring the NI 9219 Page Page Connecting Wires to the NI 9219 Connectors Wiring TEDS Channels Grounding and Shielding Considerations Figure 3. Connecting a Grounded Signal Source to the NI 9219 Figure 4. Connecting a Floating Signal Source to the NI 9219 NI 9219 Timing Options NI 9219 Circuitry Figure 5. Input Circuitry for One Channel Voltage and Current Modes Figure 6. Connections in Voltage, Current, and Digital In Modes + 4-Wire Resistance and 4-Wire RTD Modes 3-Wire RTD Mode 2-Wire Resistance and Quarter-Bridge Modes Half-Bridge and Full-Bridge Modes Thermocouple Mode Digital In Mode Open Contact Mode Sleep Mode Binary Data Excitation Protection Specifications Input Characteristics Page Page Page Page Input noise in ppm of Range Page Page Power Requirements Physical Characteristics Safety Safety Voltages Safety Standards Hazardous Locations Environmental Shock and Vibration Electromagnetic Compatibility CE Compliance Waste Electrical and Electronic Equipment (WEEE) Calibration Where to Go for Support