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TC-4353 Calibration Procedure

Calibration Executive 4.0 Help

Edition Date: March 2017

Part Number: 374564H-01

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This topic contains information for calibrating the National Instruments TC-4353 using Calibration Executive.

Calibration Executive Procedure Features:

Adjustment

Unsupported
Manual Mode

Supported
Selectable Test Points

Unsupported

Approximate Test Time: 15 minutes

Test Equipment| Test Conditions| Test Limit Equations

Test Equipment

The following table lists the test equipment required to calibrate the TC-4353 device.

Instrument Recommended Model Requirements
Thermocouple Calibrator Ectron 1140A If this instrument is unavailable, use a precision thermocouple source with an accuracy of at least 0.07 °C and an output impedance of ≤10 Ω
PXI Express Chassis PXIe-1062Q
Calibrated PXIe-4353 Module PXIe-4353 The module must be verified to be within its specifications

The following table lists the fixture equipment required to build your own fixture.

Instrument Recommended Model Requirements
Thermocouple Wire TT-E-24-SLE-100 E-type SLE 24 AWG, 20 to 30 meters
Thermocouple Connector Omega P/N: SMPW-E-M E-type, must fit the output terminal of the thermocouple calibrator
Thermocouple Connector Omega P/N: SMPW-E-M (x33) E-type, mini thermocouple connector to fit the terminals of the TC-4353
Thermocouple Barrier Strips Omega P/N: BS16A (x4) 32 channels
Thermocouple Barrier Strip Jackets Omega P/N: BSJ-E (x6) E-type, 32 channels
Thermocouple Spade Lugs Omega P/N: SLCH-20 (x4), SLCO-20 (x4) 64 lugs of Chromel, 64 lugs of Constantan to match the E-type wires
Spade-Lug Crimping Tool Omega P/N: CRIMPING TOOL-P Must effectively crimp the spade lugs with the 24 AWG wire


Test Conditions

The following setup and environmental conditions are required to ensure the TC-4353 meets published specifications.

  • Keep connections to the PXIe-4353 device as short as possible. Long cables and wires act as antennas, picking up extra noise that can affect measurements.
  • Verify that all connections to the PXIe-4353 are secure.
  • Maintain an ambient temperature of 23 °C ±5 °C. The module temperature will be greater than the ambient temperature.
  • Keep relative humidity below 80%.
  • Allow a warm-up time of at 15 minutes to ensure that the measurement circuitry of the PXIe-4353 and TC-4353 measurement circuitry are at a stable operating temperature.
  • Ensure that the PXI Express chassis fan speed is set to HIGH, that the fan filters are clean, and that the empty slots contain filler panels. For more information, refer to the Maintain Forced-Air Cooling Note to Users document available at ni.com/manuals.
  • To correctly verify the TC-4353, the PXIe-4353 must be currently verified to be within the product specifications. If they are not, verify the PXIe-4353 before verifying the TC-4353. Refer to the NI PXIe-4353 Calibration Procedure to verify the PXIe-4353 as needed.

Refer to the NI TC-4353 Calibration Procedure for instructions on building your own fixture for the TC-4353. Visit ni.com/calibration to find the calibration procedure.

Test Limit Equations

The following test limit is derived from published specifications.

Verify Accuracy

VerifyAccuracyLimit = TC-4353 CJC Sensor Accuracy + PXIe-4353 CJC Channel Accuracy

TC-4353 CJC Sensor Accuracy = 0.25 °C

PXIe-4353 CJC Channel Accuracy = 0.03 °C


 

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