National Instruments FD-11613 Manuale utente

CALIBRATION PROCEDURE

FD-11613/11614

8-Channel/16-Channel Temperature Input Device for FieldDAQ

This document contains information for calibrating the FD-11613 and FD-11614. For more

information about calibration, visit ni.com/calibration.

Contents

Software Requirements............................................................................................................. 1

Documentation.......................................................................................................................... 2

Test Equipment..........................................................................................................................2

Test Conditions..........................................................................................................................2

Calibration Procedure............................................................................................................... 3

Initial Setup....................................................................................................................... 3

Verification........................................................................................................................4

Adjustment........................................................................................................................ 7

EEPROM Update..............................................................................................................8

Reverification....................................................................................................................9

Accuracy Under Calibration Conditions...................................................................................9

Where to Go for Support.........................................................................................................10

Software Requirements

Calibrating the FD-11613 or FD-11614 requires the installation of NI-DAQmx on the

calibration system. NI recommends using the latest NI-DAQmx driver. Earliest driver support

version for calibrating the FD-11613 or FD-11614 is listed in the following table.

Table 1. FD-11613/11614 Driver Support

Driver Earliest Version Support for Device Calibration

NI-DAQmx 18.1

You can download NI-DAQmx from ni.com/downloads. NI-DAQmx supports many

programming languages, including LabVIEW, LabWindows™/CVI™, C/C++, C#, and Visual

Basic .NET. When you install NI-DAQmx, you only need to install support for the application

software that you intend to use.

Documentation

Consult the following documents for information about the FieldDAQ device and the

NI-DAQmx driver. All documents are available on ni.com/manuals; help files install with the

software.

FD-11613/11614 Quick Start —Instructions for installing and configuring your

FieldDAQ device.

FD-11613 User Guide or FD-11614 User Guide—Information about your FieldDAQ

device.

FD-11613 Specifications or FD-11614 Specifications—Detailed specifications for

your FieldDAQ device.

NI-DAQmx Readme—Operating system and application software support in

NI-DAQmx.

NI-DAQmx Help—Information about creating applications that use the NI-DAQmx

driver.

NI-DAQmx C Reference Help—Reference information for NI-DAQmx C functions

and NI-DAQmx C properties.

Test Equipment

The following table lists the equipment required for calibrating your FD-11613 or FD-11614.

If you do not have the recommended instruments, use the minimum requirements to select

substitute equipment.

Table 2. Recommended Test Equipment

Equipment Recommended Model Minimum Requirements

Calibrator Fluke 5522A locked in the 3.3 V

range

A high-precision voltage source with an

uncertainty of ≤70 ppm when sourcing

up to 50 µA.

Mini TC (x8) Omega SMPW-U-M U type

Test Conditions

The following setup and environmental conditions are required to ensure the FD-11613/11614

meets published specifications:

2| ni.com | FD-11613/11614 Calibration Procedure

• Keep connections to the 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 device are secure.

• Use shielded copper wire for all cable connections to the device. Use twisted-pairs wire

to eliminate noise and thermal offsets.

• Maintain an ambient temperature of 23 ±5 °C. The device temperature will be greater

than the ambient temperature.

• Keep relative humidity below 80%.

• Allow a warm-up time of at least 10 minutes to ensure that the FieldDAQ device

measurement circuitry is at a stable operating temperature.

Calibration Procedure

The calibration process includes the following steps:

1. Initial Setup on page 3

2. Verification on page 4

3. Adjustment on page 7

4. EEPROM Update on page 8

5. Reverification on page 9

Initial Setup

Complete the following steps to set up the FieldDAQ device.

1. Install the software and NI-DAQmx driver as outlined in the FD-11613/11614 Quick

Start.

Note You must install NI-DAQmx 18.1 or later for device calibration support.

2. Set up the FieldDAQ device as outlined in the FD-11613/11614 Quick Start.

3. Configure the FieldDAQ device in Measurement & Automation Explorer (NI MAX) as

outlined in the FD-11613/11614 Quick Start.

4. If the FieldDAQ device is not reserved automatically, select the device and click the

Reserve Network Device button. Refer to Reserving the Device in MAX for more

information.

5. Self-test your device in MAX by expanding Devices and Interfaces »Network Devices ,

right-clicking your FieldDAQ device, and selecting Self-Test. Self-test performs a brief

test to determine successful device installation. When the self-test finishes, a message

indicates successful verification or if an error occurred. If an error occurs, refer to ni.com/

support/daqmx.

Reserving the Device in MAX

When the FieldDAQ device is connected to a network, multiple users can access the device.

To perform any DAQ functionality on the device, including reset and self-test, you must

reserve the device in MAX. In MAX, an unreserved device or device reserved by another host

FD-11613/11614 Calibration Procedure | © National Instruments | 3

appears with an X and a reserved device appears as dark grey. Only one user at a time can

reserve the FieldDAQ device.

If the device was not reserved automatically after it was added (Add Device), you can reserve

the device in MAX by expanding Devices and Interfaces»Network Devices, selecting the

device, and clicking the Reserve Network Device button. The Override Reservation dialog

box opens when you attempt to explicitly reserve a device. Agreeing to override the

reservation forces the FieldDAQ device to be reserved by the current user.

Verification

The following performance verification procedures describe the sequence of operation and test

points required to verify the FieldDAQ device. The verification procedures assume that

adequate traceable uncertainties are available for the calibration references. Complete the

following procedure to determine the As-Found status of the FieldDAQ device.

1. Connect the calibrator to Bank 1 of the FieldDAQ device, as shown in the following

figure.

Figure 1. Bank 1 Voltage Channel Verification Connections

TC0+

TC0–

TC1+

TC1–

TC6+

TC6–

TC7+

TC7–

Calibrator

FD-11613/11614

TC2+

TC2–

TC3+

TC3–

TC4+

TC4–

TC5+

TC5–

Bank 1

2. On the calibrator, lock the voltage range to 3.3 V to reduce loading error.

a. Set the output voltage to 2.0 V.

b. Press the 3.3 V auto button to lock the 3.3 V range.

3. Set the calibrator output to a Test Point value indicated in the following table.

4| ni.com | FD-11613/11614 Calibration Procedure

Table 3. FD-11613/11614 Voltage Verification Test Limits for Positive and Negative Test

Points

ADC Timing

Mode

Range (mV) Test Point 1-Year Limits (mV)

Minimum Maximum Location

Value

(mV)

Lower

Limit

Upper

Limit

High

Resolution

-78.125 78.125 Negative FS -70 -70.030 -69.970

Positive FS 70 69.970 70.030

Best 50 Hz

Rejection

-78.125 78.125 Negative FS -70 -70.030 -69.970

Positive FS 70 69.970 70.030

Best 60 Hz

Rejection

-78.125 78.125 Negative FS -70 -70.030 -69.970

Positive FS 70 69.970 70.030

High Speed -78.125 78.125 Negative FS -70 -70.039 -69.961

Positive FS 70 69.961 70.039

The test limits in this table are derived using the values listed in Accuracy Under Calibration

Conditions.

4. Set the calibrator to Operate mode (OPR).

5. Acquire and average samples.

a. Create and configure an AI voltage channel on the FieldDAQ device according to

the following table.

Table 4. FD-11613/11614 Voltage Channel Configuration

Physical Channel

Input Range (mV)

Units Terminal ConfigurationMinimum Maximum

FD11613-Bank1/ai0:7 or

FD11614-Bank1/ai0:7

-78.125 78.125 Volts Differential

b. Configure the AI voltage channel timing according to the following table.

Table 5. FD-11613/11614 Voltage Channel Timing Configuration

ADC Timing Mode Sample Mode Samples to Read Rate (S/s) Timeout (s)

High Resolution Finite 20 1.8 30

Best 50 Hz Rejection Finite 80 7.1 30

Best 60 Hz Rejection Finite 100 8.3 30

High Speed Finite 1,000 85 30

c. Start the task.

FD-11613/11614 Calibration Procedure | © National Instruments | 5

d. Read the samples and average the readings.

e. Clear the task.

6. Set the calibrator to Standby mode (STBY).

7. Compare the average to the limits in Table 3.

8. Repeat steps 3 through 7 for each test point.

9. Repeat steps 3 through 8 for each ADC timing mode on the FieldDAQ device (High

Resolution, Best 50 Hz Rejection, Best 60 Hz Rejection, and High Speed).

10. Disconnect the calibrator from the FieldDAQ device.

11. Short all TC+ and TC- terminals on the FieldDAQ device together.

12. Acquire and average samples.

a. Create and configure an AI voltage channel on the FieldDAQ device according to

Table 3.

b. Configure the AI voltage channel timing according to Table 4.

c. Start the task.

d. Read the samples from each channel and average the readings.

e. Clear the task.

13. Compare the average to the limits in the following table.

Table 6. FD-11613/11614 Voltage Verification Test Limits for Zero Test Points

ADC Timing

Mode

Range (mV) Test Point 1-Year Limits (mV)

Minimum Maximum Location

Value

(mV)

Lower

Limit

Upper

Limit

High

Resolution

-78.125 78.125 Zero 0 -0.0044 0.0044

Best 50 Hz

Rejection

-78.125 78.125 Zero 0 -0.0045 0.0045

Best 60 Hz

Rejection

-78.125 78.125 Zero 0 -0.0045 0.0045

High Speed -78.125 78.125 Zero 0 -0.0049 0.0049

The test limits in this table are derived using the values listed in Accuracy Under Calibration

Conditions.

14. Repeat steps 12 through 13 for each ADC timing mode on the FieldDAQ device.

15. Disconnect the short from the TC channels.

16. (FD-11614) Connect the calibrator to Bank 2 of the FD-11614, as shown in the following

figure.

6| ni.com | FD-11613/11614 Calibration Procedure

Figure 2. Bank 2 Voltage Channel Verification Connections

TC0+

TC0–

TC1+

TC1–

TC6+

TC6–

TC7+

TC7–

Calibrator

FD-11614

TC2+

TC2–

TC3+

TC3–

TC4+

TC4–

TC5+

TC5–

Bank 2

17. (FD-11614) Complete Steps 2 through 15 for Bank 2 using FD11614-Bank2/ai0:7 as the

physical channel.

Adjustment

Complete the following procedure to adjust the voltage accuracy of the FieldDAQ device.

1. Connect the calibrator to Bank 1 of the FieldDAQ device, as shown in the following

figure.

Figure 3. Bank 1 Voltage Channel Adjustment Connections

TC0+

TC0–

TC1+

TC1–

TC6+

TC6–

TC7+

TC7–

Calibrator

FD-11613/11614

TC2+

TC2–

TC3+

TC3–

TC4+

TC4–

TC5+

TC5–

Bank 1

2. Initialize a calibration session on the FieldDAQ device. The default password is NI.

3. Adjust the FieldDAQ device voltage.

a. Input the ambient temperature in degrees Celsius using the Set Temperature

FieldDAQ function.

b. Call the DAQmx Get 11613 Calibration Adjustment Points or DAQmx Get 11614

Calibration Adjustment Points function.

FD-11613/11614 Calibration Procedure | © National Instruments | 7

c. On the calibrator, lock the voltage range to 3.3 V to reduce loading error.

d. Set the calibrator to the first reference value determined by the array of adjustment

points.

e. Set the calibrator to Operate mode (OPR).

f. Call and configure the DAQmx Adjust 11613 Calibration or DAQmx Adjust 11614

Calibration function according to the following table.

Table 7. Voltage Adjustment Configuration

Physical Channel Reference Value

FD11613-Bank1/ai0:7 or

FD11614-Bank1/ai0:7

A reference value from the array of

adjustment points

g. Set the calibrator to Standby mode (STBY).

h. Repeat steps d through g for each reference value in the array of adjustment points.

4. Disconnect the calibrator from the FieldDAQ device.

5. (FD-11614) Connect the calibrator to Bank 2 of the FD-11614, as shown in the following

figure.

Figure 4. Bank 2 Voltage Channel Adjustment Connections

TC0+

TC0–

TC1+

TC1–

TC6+

TC6–

TC7+

TC7–

Calibrator

FD-11614

TC2+

TC2–

TC3+

TC3–

TC4+

TC4–

TC5+

TC5–

Bank 2

6. (FD-11614) Without closing the Bank 1 session, complete Steps 2 through 4 for Bank 2

using FD11614-Bank2/ai0:7 as the physical channel.

7. (FD-11613) Close and commit the calibration session.

(FD-11614) Close and commit both calibration sessions.

EEPROM Update

When an adjustment procedure is completed, the FieldDAQ device internal calibration

memory (EEPROM) is immediately updated.

8| ni.com | FD-11613/11614 Calibration Procedure

If you do not want to perform an adjustment, you can update the calibration date and onboard

calibration temperature without making any adjustments:

1. Call the DAQmx Initialize External Calibration function to start a calibration session on

the FieldDAQ device. The default password is NI.

2. Call the DAQmx Set Temperature FieldDAQ Calibration function to input the external

temperature in degrees Celsius.

3. Call the DAQmx Close External Calibration function to end the session. Set the Action

input to Commit.

Reverification

Repeat Verification to determine the As-Left status of the device.

Note If any test fails reverification after performing an adjustment, verify that you

have met the all conditions listed in Test Conditions before returning your device to

NI. Refer to Where to Go for Support for assistance in returning the device to NI.

Accuracy Under Calibration Conditions

The values in the following table are based on calibrated scaling coefficients, which are stored

in the onboard EEPROM.

The following accuracy table is valid for calibration under the following conditions:

• Ambient temperature 23 °C ± 5 °C

• No nodes share power with the FieldDAQ device under calibration

The test limits listed in Tables 3 and 6 are derived using the values in the following table.

Table 8. FD-11613/11614 Voltage Accuracy Under Calibration Conditions

Mode ±PPM of Reading ±PPM of Range*

High Resolution 362 55.9

Best 50 Hz Rejection 365 56.9

Best 60 Hz Rejection 365 56.9

High Speed 487 62.3

* Range = 78.125 mV

Note Values in this table are intended for calibration verification only. These

values only apply under the specific calibration conditions described in this

document, and are not to be construed as general operational specifications of the

FD-11613 or FD-11614. For operational specifications, refer to the most recent

FD-11613 Specifications or FD-11614 Specifications at ni.com/manuals.

Where to Go for Support

The National Instruments website is your complete resource for technical support. At ni.com/

support you have access to everything from troubleshooting and application development self-

help resources to email and phone assistance from NI Application Engineers.

National Instruments corporate headquarters is located at 11500 North Mopac Expressway,

Austin, Texas, 78759-3504. National Instruments also has offices located around the world to

help address your support needs. For telephone support in the United States, create your

service request at ni.com/support and follow the calling instructions or dial 512 795 8248. For

telephone support outside the United States, visit the Worldwide Offices section of ni.com/

niglobal to access the branch office websites, which provide up-to-date contact information,

support phone numbers, email addresses, and current events.

Information is subject to change without notice. Refer to the NI Trademarks and Logo Guidelines at ni.com/trademarks for

information on NI trademarks. Other product and company names mentioned herein are trademarks or trade names of their

respective companies. For patents covering NI products/technology, refer to the appropriate location: Help»Patents in your

software, the patents.txt file on your media, or the National Instruments Patent Notice at ni.com/patents. You can find

information about end-user license agreements (EULAs) and third-party legal notices in the readme file for your NI product. Refer

to the Export Compliance Information at ni.com/legal/export-compliance for the NI global trade compliance policy and how

to obtain relevant HTS codes, ECCNs, and other import/export data. NI MAKES NO EXPRESS OR IMPLIED WARRANTIES AS

TO THE ACCURACY OF THE INFORMATION CONTAINED HEREIN AND SHALL NOT BE LIABLE FOR ANY ERRORS. U.S.

Government Customers: The data contained in this manual was developed at private expense and is subject to the applicable

limited rights and restricted data rights as set forth in FAR 52.227-14, DFAR 252.227-7014, and DFAR 252.227-7015.

377491A-01 November 12, 2019

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