NI 9219 Calibration Procedure
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© National Instruments Corporation
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3
Table 1.
Recommended Equipment
Equipment
Recommended
Model
Where Used
Minimum Requirements
Source
Fluke 5700A
Voltage Accuracy,
Thermocouple
Accuracy
Use a device that can source voltages as
high as 48 V and meets the following
specifications:
Noise:
≤
5 mV
pkpk
0.1 Hz–10 Hz at 48 V
≤
500
μ
V
pkpk
0.1 Hz–10 Hz at 12 V
≤
500
μ
V
pkpk
0.1 Hz–10 Hz at 3.2 V
≤
50
μ
V
pkpk
0.1 Hz–10 Hz at 0.8 V
≤
5
μ
V
pkpk
0.1 Hz–10 Hz at 0.1 V
Current Accuracy
Use a current source with noise
≤
500 nA
pkpk
0.1 Hz–10 Hz.
Half-Bridge
Accuracy,
Full-Bridge
Accuracy
Use a voltage source with noise
≤
500
μ
V
pkpk
0.1 Hz–10 Hz at 3 V.
DMM (x2)
NI 4071
Voltage Accuracy,
Thermocouple
Accuracy
Use a DMM with
≤
30 ppm uncertainty for
voltage, and
≤
0.8
μ
V offset error in
smallest range.
Resistance
Accuracy, RTD
Accuracy,
Quarter-Bridge
Accuracy
Use a DMM with
≤
60 ppm uncertainty for
resistance, and
≤
0.01
Ω
offset error in
smallest range.
Half-Bridge
Accuracy,
Full-Bridge
Accuracy
(DMM1)
Use one DMM with
≤
15 ppm
uncertainty for voltages under 3 V.
(DMM2)
Use a second DMM with
≤
20
ppm for uncertainty voltages under 1 V
and
≤
0.8
μ
V offset error in smallest range.
Current Accuracy
≤
270 ppm uncertainty for current,
≤
2 nA offset error in smallest range