NI-9213 Specifications

Connector Types

The NI-9213 is available in two types: push-in spring terminal and spring terminal. The push-in type spring terminal connector is black and orange. The spring terminal connector is black. NI-9213 refers to both types unless the two types are specified. Differences between the two types of spring terminal connectors are noted by the connector color.

Definitions

Warranted specifications describe the performance of a model under stated operating conditions and are covered by the model warranty.

Characteristics describe values that are relevant to the use of the model under stated operating conditions but are not covered by the model warranty.

  • Typical specifications describe the performance met by a majority of models.
  • Nominal specifications describe an attribute that is based on design, conformance testing, or supplemental testing.

Specifications are Typical unless otherwise noted.

Input Characteristics

Number of channels

16 thermocouple channels, 1 internal autozero channel, 1 internal cold-junction compensation channel

ADC resolution

24 bits

Type of ADC

Delta-Sigma

Sampling mode

Scanned

Voltage measurement range

±78.125 mV

Temperature measurement ranges

Works over temperature ranges defined by NIST (J, K, T, E, N, B, R, S thermocouple types)

Table 1. Timing Modes
Timing Mode Conversion Time (Per Channel) Sample Rate[1]1 If you are using fewer than all channels, the sample rate might be faster. The maximum sample rate = 1/(Conversion Time x Number of Channels), or 100 S/s, whichever is smaller. Sampling faster than the maximum sample rate may result in the degradation of accuracy. (All Channels[2]2 Including the autozero and cold-junction channels.)
High-resolution 55 ms 1 S/s
High-speed 740 μs 75 S/s
Common-mode voltage range

Channel-to-COM

±1.2 V minimum

COM-to-earth ground

±250 V

Common-mode rejection ratio
High-resolution mode (at DC and 50 Hz to 60 Hz)

Channel-to-COM

100 dB

COM-to-earth ground

>170 dB

High-speed mode (at 0 Hz to 60 Hz)

Channel-to-COM

70 dB

COM-to-earth ground

>150 dB

Input bandwidth

High-resolution mode

14.4 Hz

High-speed mode

78 Hz

High-resolution noise rejection (at 50 Hz and 60 Hz)

60 dB

Overvoltage protection

±30 V between any two inputs

Differential input impedance

78 MΩ

Input current

50 nA

Input noise

High-resolution mode

200 nV RMS

High-speed mode

7 μV RMS

Gain error
High-resolution mode

at 25 °C

0.03% typical

at -40 °C to 70 °C

0.07% typical, 0.15% maximum

High-speed mode

at 25 °C

0.04% typical

at -40 °C to 70 °C

0.08% typical, 0.16% maximum

Offset error

High-resolution mode

4 μV typical, 6 μV maximum

High-speed mode

14 μV typical, 17 μV maximum

Offset error from source impedance

Add 0.05 μV per Ω, when source impedance >50 Ω

Cold-junction compensation accuracy

0 °C to 70 °C

0.8 °C typical, 1.7 °C maximum

-40 °C to 70 °C

1.1 °C typical, 2.1 °C maximum

MTBF

852,407 hours at 25 °C; Bellcore Issue 2, Method 1, Case 3, Limited Part Stress Method

Temperature Measurement Accuracy

Measurement sensitivity[3]3 Measurement sensitivity represents the smallest change in a temperature that a sensor can detect. It is a function of noise. The values assume the full measurement range of the standard thermocouple sensor according to ASTM E230-87.
High-resolution mode

Types J, K, T, E, N

<0.02 °C

Types B, R, S

<0.15 °C

High-speed mode

Types J, K, T, E

<0.25 °C

Type N

<0.35 °C

Type B

<1.2 °C

Types R, S

<2.8 °C

The following figures show the errors for each thermocouple type when connected to the NI-9213 with the autozero channel on. The figures display the maximum errors over a full temperature range and typical errors at room temperature. The figures account for gain errors, offset errors, differential and integral nonlinearity, quantization errors, noise errors, 50 Ω lead wire resistance, and cold-junction compensation errors. The figures do not account for the accuracy of the thermocouple itself.

Figure 1. Thermocouple Types J and N Errors

1378

Figure 2. Thermocouple Type K Errors

1378

Figure 3. Thermocouple Types T and E Errors

1378

Figure 4. Thermocouple Type B Errors

1378

Figure 5. Thermocouple Types R and S Errors

1378

Power Requirements

Power consumption from chassis

Active mode

490 mW maximum

Sleep mode

25 μW maximum

Thermal dissipation (at 70 °C)

Active mode

840 mW maximum

Sleep mode

710 mW maximum

Physical Characteristics

Weight

NI-9213 (black connector)

159 g (5.6 oz)

NI-9213 (black/orange connector)

164 g (5.8 oz)

Dimensions

Visit ni.com/dimensions and search by module number.

Black Connector

The NI-9213 (black connector) requires a flathead screwdriver with a 2.3 mm × 1.0 mm (0.09 in. × 0.04 in.) blade for signal connection; insert the screwdriver into a spring clamp activation slot to open the corresponding connector terminal, press a wire into the open connector terminal, and then remove the screwdriver from the activation slot to clamp the wire into place.

Spring terminal wiring

Gauge

0.08 mm2 to 1.0 mm2 (28 AWG to 18 AWG) copper conductor wire

Wire strip length

7 mm (0.28 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per spring terminal

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

Black/Orange Connector

The push-in spring style NI-9213 does not require a tool for signal connection; push the wire into the terminal when using solid wire or stranded wire with a ferrule, or by pressing the push button when using stranded wire without a ferrule.

Spring terminal wiring

Gauge

0.14 mm2 to 1.5 mm2 (26 AWG to 16 AWG) copper conductor wire

Wire strip length

10 mm (0.394 in.) of insulation stripped from the end

Temperature rating

90 °C minimum

Wires per spring terminal

One wire per spring terminal; two wires per spring terminal using a 2-wire ferrule

Ferrules

0.14 mm2 to 1.5 mm2

Connector securement

Securement type

Screw flanges provided

Torque for screw flanges

0.2 N · m (1.80 lb · in.)

Environmental Characteristics

Temperature

Operating

-40 °C to 70 °C

Storage

-40 °C to 85 °C

Humidity

Operating

10% RH to 90% RH, noncondensing

Storage

5% RH to 95% RH, noncondensing

Ingress protection

IP40

Pollution Degree

2

Maximum altitude

NI-9213 (black connector)

2,000 m

NI-9213 (black/orange connector)

4,000 m

Shock and Vibration
Operating vibration

Random

5 g RMS, 10 Hz to 500 Hz

Sinusoidal

5 g, 10 Hz to 500 Hz

Operating shock

30 g, 11 ms half sine; 50 g, 3 ms half sine; 18 shocks at 6 orientations

To meet these shock and vibration specifications, you must panel mount the system.

NI-9213 (Black Connector) Safety Voltages

Connect only voltages that are within the following limits:

Between any two terminals

±30 V maximum

Isolation

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 V RMS, Measurement Category II

Withstand

2,300 V RMS, verified by a 5 s dielectric withstand test

NI-9213 (Black/Orange Connector) Safety Voltages

Connect only voltages that are within the following limits:

Channel-to-channel

None

Channel-to-earth ground

Continuous

250 V RMS, Measurement Category II

Withstand up to 4,000 m

3,000 V RMS, verified by a 5 s dielectric withstand test

Calibration

You can obtain the calibration certificate and information about calibration services for the NI-9213 at ni.com/calibration.

Calibration interval

1 year

Conditions

Specifications are valid under the following conditions unless otherwise noted.

  • Ambient temperature range -40 °C to 70 °C
  • 15 minutes of warm-up time

1 If you are using fewer than all channels, the sample rate might be faster. The maximum sample rate = 1/(Conversion Time x Number of Channels), or 100 S/s, whichever is smaller. Sampling faster than the maximum sample rate may result in the degradation of accuracy.

2 Including the autozero and cold-junction channels.

3 Measurement sensitivity represents the smallest change in a temperature that a sensor can detect. It is a function of noise. The values assume the full measurement range of the standard thermocouple sensor according to ASTM E230-87.