Page 2 - Notices; C A U T I O N; notice denotes a haz-; CAUTION; notice until the indicated; W A R N I N G
II U2802A 31-Channel Thermocouple Input User’s Guide Notices © Agilent Technologies, Inc. 2008 No part of this manual may be reproduced in any form or by any means (including elec-tronic storage and retrieval or translation into a foreign language) without prior agree-ment and written consent from A...
Page 3 - Safety Information; Safety Symbols
U2802A 31-Channel Thermocouple Input User’s Guide III Safety Information The following general safety precautions must be observed during all phases of this instrument. Failure to comply with these precautions or with specific warnings elsewhere in this manual violates safety standards of design, ma...
Page 5 - U2802A 31-Channel Thermocouple Input User’s Guide; Regulatory Markings
U2802A 31-Channel Thermocouple Input User’s Guide V Regulatory Markings The CE mark is a registered trademark of the European community. This CE mark shows that the product complies with all the relevant European legal directive. ICES/NMB-001 indicates that this ISM device complies with Canadian ICE...
Page 6 - General Safety Information; Always use the device with the cables provided.; Do not permit any blockage of the ventilation holes of the device.
VI U2802A 31-Channel Thermocouple Input User’s Guide General Safety Information W A R N I N G • Do not use the device if it is damaged. Before you use the device, inspect the case. Look for cracks or missing plastic. Do not operate the device around explosive gas, vapor or dust. • Do not apply more ...
Page 7 - The affixed product label is shown as below:; Do not dispose in domestic household waste; for more information.
U2802A 31-Channel Thermocouple Input User’s Guide VII Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC This instrument complies with the WEEE Directive (2002/96/EC) marking requirement. This affixed product label indicates that you must not discard this electrical/electronic pro...
Page 8 - Environmental Conditions; Temperature
VIII U2802A 31-Channel Thermocouple Input User’s Guide Environmental Conditions The table below shows the general environmental requirements for the product. Environmental Conditions Requirements Temperature Operating temperature from 0 °C to +55 °C Humidity Relative humidity at 50% to 85% RH (Non-c...
Page 9 - Getting Started
U2802A 31-Channel Thermocouple Input User’s Guide IX In This Guide... 1 Getting Started This chapter introduces the new Agilent U2802A 31- channel thermocouple input device and provides quick start information. It also provides product outlook, installation configuration and troubleshooting guide. 2...
Page 13 - Contents 1; Contents; II; Getting Started
Contents 1 Contents Notices II Safety Information III Environmental Conditions VIII In This Guide... IX Declaration of Conformity X 1 Getting Started Introduction to Agilent U2802A 31-Channel Thermocouple Input 2 Product Overview 3 Standard Purchase Items Checklist 6 Installations and Configurations...
Page 14 - Contents 2; Calibration; Calibration Information
Contents 2 5 Calibration Calibration Information 62 Zeroing Function 62 Restore Factory Calibration 63 U2802A_UG.book Page 2 Tuesday, January 8, 2008 10:24 AM
Page 15 - Contents 3; List of Figures; Figure 2-1 System overview of U2802A with DAQ
Contents 3 List of Figures Figure 1-1 U2802A installation flowchart 8 Figure 2-1 System overview of U2802A with DAQ 28 Figure 2-2 System functionality block diagram for U2802A 29 Figure 2-3 Functional block diagram for U2802A 30 Figure 2-4 Functional block diagram for thermocouple mode in U2802A 31 ...
Page 16 - Contents 4; List of Tables
Contents 4 List of Tables Table 4-1 U2802A measurement accuracy with U2355A or U2356A, at 23 °C ± 5 °C, with different number of averaging points. 51 Table 4-2 U2802A measurement accuracy with U2355A, at 0 to 18 °C and 28 to 45 °C, with different number of averaging points. 52 Table 4-3 U2802A measu...
Page 17 - Agilent Technologies
1 Agilent U2802A 31-Channel Thermocouple InputUser’s Guide Agilent Technologies 1Getting Started Introduction to Agilent U2802A 31-Channel Thermocouple Input 2 Product Overview 3 Product Outlook 3 Product Dimensions 5 Standard Purchase Items Checklist 6 Installations and Configurations 7 A. Check Yo...
Page 18 - Introduction to Agilent U2802A 31-Channel Thermocouple Input
1 Getting Started 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Introduction to Agilent U2802A 31-Channel Thermocouple Input The Agilent U2802A 31- channel thermocouple input is a thermocouple input device that functions to convert low input voltage signal (< ±100 mV) from a thermoc...
Page 19 - Product Overview; Product Outlook; Top View
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 3 Product Overview Product Outlook Top View Front View Connector 1 Connector 2 Detachable Cover U2802A 31-C hannel Therm oc ouple I nput Railing Guide Strain Release Assembly Footer U2802A_UG.book Page 3 Tuesday, January 8, ...
Page 20 - Side View
1 Getting Started 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Side View Bottom View Ventilation Holes U2802A_UG.book Page 4 Tuesday, January 8, 2008 10:24 AM
Page 21 - Product Dimensions
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 5 Product Dimensions Top View Front View U2802A 31-Channel Thermoc ouple Input U2802A_UG.book Page 5 Tuesday, January 8, 2008 10:24 AM
Page 22 - Standard Purchase Items Checklist
1 Getting Started 6 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Standard Purchase Items Checklist Inspect and verify that you have all the following items upon standard purchase of U2802A 31- channel thermocouple input device. If there are missing items, contact the nearest Agilent Sal...
Page 23 - Installations and Configurations; N O T E
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 7 Installations and Configurations The U2802A is used in conjunction with the U2355A or U2356A DAQ. If you are using the U2300A Series with the Agilent Measurement Manager, follow the step- by- step instructions as shown in ...
Page 24 - U2802A installation flowchart
1 Getting Started 8 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Figure 1-1 U2802A installation flowchart A. Check Your System Requirements C. Install the Agilent IO Libraries Suite Version 14.2 or Higher D. Install the DAQ Hardware Driver F. Connect Your DAQ Device to the PC H. Connect...
Page 25 - A. Check Your System Requirements
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 9 A. Check Your System Requirements Before installing the Agilent Measurement Manager software and DAQ hardware driver, make sure your PC meets the following minimum system requirements for installation and data acquisition....
Page 26 - B. Check Your Pre-Installed IO Libraries Suite; About Agilent IO Control
1 Getting Started 10 Agilent U2802A 31-Channel Thermocouple Input User’s Guide B. Check Your Pre-Installed IO Libraries Suite To check the version of your pre- installed IO Libraries Suite follow the instructions below. 1 Right- click IO Control icon on your taskbar notification area and the context...
Page 27 - ii. If Agilent IO Libraries Suite 14.2 has been pre-installed; D. Install the DAQ Hardware Driver; iii. If Agilent IO Libraries Suite is not installed; the Agilent IO Libraries Suite Version 14.2 or Higher; C. Install the Agilent IO Libraries Suite Version 14.2 or Higher; Agilent
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 11 i. If Agilent IO Libraries Suite version 14.1 or lower has been pre-installed If you have Agilent IO Libraries Suite version 14.1 or lower installed on your PC, you are required to uninstall the IO Libraries Suite. 1 To p...
Page 28 - Agilent Automation- Ready CD; For detailed installation instructions, refer to the
1 Getting Started 12 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 1 Disconnect any USB DAQ device that is connected to your PC and close all other applications on your PC. 2 Insert the Agilent Automation- Ready CD into your CD- ROM drive, and follow the instructions on your screen. 3 If...
Page 29 - Product Reference CD- ROM; Measurement Manager; drive; OK; Refer to
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 13 D. Install the DAQ Hardware Driver E. Install the Agilent Measurement Manager 1 Verify that you have the hardware driver installed. If not, close all other applications on your PC and insert the Product Reference CD- ROM ...
Page 30 - Click; to begin installation of the listed missing software.; Next
1 Getting Started 14 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 5 If you do not have the Agilent T&M Toolkit 2.1 Runtime version and/or Microsoft .NET Framework version 1.1 and 2.0 installed, the InstallShield Wizard software pre- requisite will appear as shown below. 6 Click OK t...
Page 32 - Install; to begin the installation of Agilent Measurement Manager.; Finish; when the installation has completed.
1 Getting Started 16 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 12 Click Install to begin the installation of Agilent Measurement Manager. 13 Click Finish when the installation has completed. 14 A shortcut to this software will be created on your desktop. N O T E USING THE LICENSED MA...
Page 33 - F. Connect Your DAQ Device to the PC
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 17 F. Connect Your DAQ Device to the PC G. Hardware Verification H. Connect Your U2802A to DAQ 1 Connect U2802A to U2355/56A DAQ using two 68- pin SCSI cables. 2 Connect 12 VDC power supply to the power jack on the rear pane...
Page 34 - I. Launch Your Agilent Measurement Manager; Agilent Measurement Manager; to launch the software.; to establish the connection.
1 Getting Started 18 Agilent U2802A 31-Channel Thermocouple Input User’s Guide I. Launch Your Agilent Measurement Manager 1 Double- click the Agilent Measurement Manager software icon on your desktop or go to Start > All Programs > Agilent > Measurement Manager > Agilent Measurement Mana...
Page 35 - Choosing Instrument-Specific Interface
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 19 IVI-COM Drivers The Agilent IVI- COM drivers simplify instrument control when you are working in a COM- compatible environment. IVI- COM allows you to programmatically control your instrumentation and make measurements wh...
Page 36 - Using Class-Compliant Interface; AgilentVEE support through COM mechanism using IVI- COM
1 Getting Started 20 Agilent U2802A 31-Channel Thermocouple Input User’s Guide application will compile, link, and execute without error. The test results, however, may be quite different because different instruments measure and generate signals differently. For more information on class- compliant...
Page 37 - Programming Environments; ‘System Requirements’; Software Driver
Getting Started 1 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 21 Programming Environments An IVI- COM driver works well in a variety of application development environments (ADEs) below: ✔ Agilent VEE ✔ Microsoft® Visual Basic® 6 ✔ Visual Studio C++ ✔ Visual Basic 7 ✔ C# ✔ National Ins...
Page 42 - Features; gain setting for thermocouple input mode.
2 Features and Functions 26 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Features The U2802A Thermocouple Input conditioning device is complete with the following features: ✔ Up to 31 differential input mode, or 31- single ended inputs in voltage input mode. Each of the 31 channels can ...
Page 43 - Applications
Features and Functions 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 27 Applications The U2802A Thermocouple Input conditioning device is designed for robust and demanding industrial applications. This product is suitable for a wide range of applications in various fields inclusive of:...
Page 44 - System Overview; System overview of U2802A with DAQ
2 Features and Functions 28 Agilent U2802A 31-Channel Thermocouple Input User’s Guide System Overview Figure 2-1 System overview of U2802A with DAQ The U2802A is essentially an amplifier module with a built- in temperature sensor (thermistor). In thermocouple mode, the U2802A input channel is used t...
Page 45 - Theory of Operation; Functionality of the System; System functionality block diagram for U2802A
Features and Functions 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 29 Theory of Operation Functionality of the System Figure 2-2 System functionality block diagram for U2802A 1 Thermocouple voltage signals are detected at the U2802A thermocouple inputs. 2 Signal is amplified with a g...
Page 46 - Functional Block Diagram; Functional block diagram for U2802A
2 Features and Functions 30 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Functional Block Diagram The block diagram below in Figure 2- 3 illustrates the key functional components of the U2802A. Figure 2-3 Functional block diagram for U2802A U2802A_UG.book Page 30 Tuesday, January 8, 200...
Page 47 - Analog input channel circuitry; Thermocouple input mode:; Functional block diagram for thermocouple mode in U2802A
Features and Functions 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 31 The major functional blocks of the U2802A module are: • Analog input channel circuitr y • Cold junction sensor • Digital control logic • EEPROM Analog input channel circuitry The analog circuitry for each channel c...
Page 48 - In bypass mode, the TCn+ input is routed directly to the
2 Features and Functions 32 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Bypass mode: In bypass mode, the TCn+ input is routed directly to the corresponding AI channel on Rear Connector 1. The single- ended signals tied to TCn+ should be referenced to a GND pin, and not to the TCn – inp...
Page 49 - In zero mode, the positive and negative inputs of the
Features and Functions 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 33 Figure 2-6 Ground-referenced and differential signal sources configuration in U2802A Zero mode: In zero mode, the positive and negative inputs of the instrumentation amplifier are shorted together. The output of th...
Page 50 - Cold junction sensor
2 Features and Functions 34 Agilent U2802A 31-Channel Thermocouple Input User’s Guide For bypass mode channels that are connected to valid voltage sources, the 10 M Ω pull- up resistor will cause additional current to f low through the voltage source. However, this additional current measurement is ...
Page 51 - Open Thermocouple Detection; pull- up resistor and the 10 M
Features and Functions 2 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 35 Open Thermocouple Detection The U2802A provides a built- in 10 M Ω resistor on each TC+ terminal, which is pulled up to the internal +15 V power supply rail. This resistor can be enabled or disabled via the digital...
Page 53 - Pin Configurations
37 Agilent U2802A 31-Channel Thermocouple InputUser’s Guide Agilent Technologies 3Pin Configurations and Assignments Pin Configurations 38 Pin Assignments 38 Pin Description 39 Connector Pinout 44 This chapter described the Agilent U2802A 31- channel thermocouple input device pin configurations and ...
Page 54 - Pin Assignments
3 Pin Configurations and Assignments 38 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Pin Configurations Pin Assignments Figure 3-1 U2802A pin assignment U2802A_UG.book Page 38 Tuesday, January 8, 2008 10:24 AM
Page 55 - Pin Description; Pin
Pin Configurations and Assignments 3 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 39 Pin Description Connector J71 Pin Pin name Description 1 TC1+ In thermocouple mode, TCx+ and TCx– are the thermocouple differential input. In voltage mode, single ended input at TCx+ and GND. TCx– is no...
Page 60 - Connector Pinout; Rear panel pinout for Connector 1
3 Pin Configurations and Assignments 44 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Connector Pinout Rear panel pinout for Connector 1 Figure 3-2 Connector 1 pin assignment for U2355A and U2356A U2802A_UG.book Page 44 Tuesday, January 8, 2008 10:24 AM
Page 61 - Rear panel pinout for Connector 2
Pin Configurations and Assignments 3 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 45 Rear panel pinout for Connector 2 Figure 3-3 Connector 2 pin assignment for U2355A and U2356A U2802A_UG.book Page 45 Tuesday, January 8, 2008 10:24 AM
Page 64 - General Specifications
4 Product Specifications 48 Agilent U2802A 31-Channel Thermocouple Input User’s Guide General Specifications POWER CONSUMPTION ±12 VDC, 750 mA maximum OPERATING ENVIRONMENT • Operating temperature from 0 °C to 55 °C • Relative humidity at 50% to 85% RH (non-condensing) • Altitude up to 2000 meters S...
Page 65 - Product Characteristics
Product Specifications 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 49 Product Characteristics GENERAL CHARACTERISTICS Number of channels 31 differential and 1 CJC Input voltage range for voltage mode ±10 V (signal + common mode) Input voltage (thermocouple mode) ±100 mV Sampling rate...
Page 67 - System Accuracy Specifications; different number of averaging points.
Product Specifications 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 51 System Accuracy Specifications The Agilent U2802A thermocouple input measurement accuracy with the U2355A and U2356A is as shown in Table 4- 1 , Table 4- 2 , and Table 4- 3 . Table 4-1 U2802A measurement accuracy w...
Page 68 - with different number of averaging points.
4 Product Specifications 52 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Table 4-2 U2802A measurement accuracy with U2355A, at 0 to 18 ° C and 28 to 45 ° C, with different number of averaging points. Thermocouple Measurements Accuracy (U2355A @ 0 °C to 18 °C and 28 °C to 45 °C) T/C Type...
Page 70 - Calculating System Accuracy
4 Product Specifications 54 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Calculating System Accuracy The overall measurement system comprises of three major components: 1 DAQ (U2355A or U2356A) 2 Signal Conditioner (U2802A), which includes CJ Sensor error 3 Sensor (Thermocouples) Errors...
Page 71 - and E; are calculated as follows:; Next, the cold junction sensor error is calculated.
Product Specifications 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 55 With zeroing, the offset errors from the DAQ and the U2802A can be removed, and replaced with the zeroing error. Based on the ITS- 90 Thermocouple table, a J- type thermocouple will output 33.102 mV at 600 °C, and ...
Page 72 - System accuracy without thermocouple sensor error:
4 Product Specifications 56 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Therefore, E THERMOCOUPLE = 0.75% × 600 °C = 4.5 °C Using the above individual component errors, the total measurement system accuracy is calculated as below. System accuracy without thermocouple sensor error: E TO...
Page 73 - System Typical Performance; Thermoelectric Characteristics
Product Specifications 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 57 System Typical Performance Thermoelectric Characteristics The thermoelectric characteristics for various thermocouple types is shown in Figure 2- 1 . Figure 4-1 Thermoelectric characteristics for various thermocoup...
Page 74 - Typical Error vs. Measurement Performance
4 Product Specifications 58 Agilent U2802A 31-Channel Thermocouple Input User’s Guide Typical Error vs. Measurement Performance The U2802A measurement error with U2355A or U2356A at 23 °C ± 5 °C is shown in Figure 2- 2 . Figure 4-2 U2802A measurement accuracy plot for various thermocouples type N O ...
Page 75 - Making Accurate Temperature Measurements
Product Specifications 4 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 59 Making Accurate Temperature Measurements Thermocouple measurement accuracy is ver y sensitive to cold junction sensor errors and temperature gradients across the terminals. Keep the module away from any heat source...
Page 77 - Calibration
61 Agilent U2802A 31-Channel Thermocouple InputUser’s Guide Agilent Technologies 5Calibration Calibration 62 Calibration Information 62 Zeroing Function 62 Restore Factory Calibration 63 This chapter contains the calibration information and factor y restore calibration procedure for the Agilent U280...
Page 79 - Restore Factory Calibration
Calibration 5 Agilent U2802A 31-Channel Thermocouple Input User’s Guide 63 Restore Factory Calibration The Restore Factor y Calibration function in the Agilent U2802A is used to restore calibration data from user’s settings to factor y original settings. To perform factor y restore calibration, foll...
Page 81 - Contact us
© Agilent Technologies, Inc. 2008 First Edition, 7 January 2008 U2802-90003 www.agilent.com Agilent Technologies Contact us T o obtain service, warranty or technical support assistance, contact us at the following phone numbers: United States:(tel) 800 829 4444 (fax) 800 829 4433Canada:(tel) 877 894...
