Agilent Technologies U2802A User Manual
Agilent U2802A
31-Channel
Thermocouple Input
Device
User’s Guide
Agilent Technologies
Notices
CAUTION
WARNING
© Agilent Technologies, Inc. 2008-2011
No p art o f this manu al may be re produce d in
any form or by any means (including electronic storage and retrieval or translation
into a foreign language) without prior agreement and written consent from Agilent
Technologies, Inc. as governed by United
States and international copyright laws.
Manual Part Number
U2802-90003
Edition
Third Edition, October 28, 2011
Agilent Technologies, Inc.
3501 Stevens Creek Blvd.
Santa Clara, CA 95052 USA
Warranty
The material contained in this document is provided “as is,” and is subject to being changed, without notice,
in future editions. Further, to the maximum extent permitted by applicable
law, Agilent disclaims all warranties,
either express or implied, with regard
to this manual and any information
contained herein, including but not
limited to the implied warranties of
merchantability and fitness for a particular purpose. Agilent shall not be
liable for errors or for incidental or
consequential damages in connection with the furnishing, use, or performance of this document or of any
information contained herein. Should
Agilent and the user have a separate
written agreement with warranty
terms covering the material in this
document that conflict with these
terms, the warranty terms in the separate agreement shall control.
Technology Licenses
The hardware and/or software described in
this document are furnished under a license
and may be used or copied only in accordance with the terms of such license.
Restricted Rights Legend
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the federal government include only those
rights customarily provided to end user customers. Agilent provides this customary
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Data) and 12.212 (Computer Software) and,
for the Department of Defense, DFARS
252.227-7015 (Technical Data - Commercial
Items) and DFARS 227.7202-3 (Rights in
Commercial Computer Software or Computer Software Documentation).
Safety Notices
A CAUTION notice denotes a hazard. It calls attention to an operating procedure, practice, or the like
that, if not correctly performed or
adhered to, could result in damage
to the product or loss of important
data. Do not proceed beyond a
CAUTION notice until the indicated
conditions are fully understood and
met.
A WARNING notice denotes a
hazard. It calls attention to an
operating procedure, practice, or
the like that, if not correctly performed or adhered to, could result
in personal injury or death. Do not
proceed beyond a WARNING
notice until the indicated conditions are fully understood and
met.
II U2802A 31-Channel Thermocouple Input User’s Guide
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,
manufacture, and intended use of the instrument. Agilent Technologies, Inc. assumes no liability for the
customer’s failure to comply with these requirements.
Safety Symbols
The following symbols indicate that precautions must be taken to maintain safe
operation of the instrument.
Direct current
Alternating current
Both direct and alternating current
Three-phase alternating current
Earth (ground) terminal
Protective conductor terminal
Frame or chassis terminal
Equipotentiality
On (Supply)
U2802A 31-Channel Thermocouple Input User’s Guide III
Off (Supply)
Equipment protected throughout by double insulation or reinforced insulation
Caution, risk of electric shock
Caution, hot surface
Caution, risk of danger (See note.)
In position of a bi-stable push control
Out position of a bi-stable push control
IV U2802A 31-Channel Thermocouple Input User’s Guide
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 ICES-001.
The CSA mark is a registered trademark of the Canadian Standards Association. A CSA mark with the indicators "C" and "US"
means that the product is certified for both the U.S. and Canadian
markets, to the applicable American and Canadian standards.
The C-tick mark is a registered trademark of the Spectrum Management Agency of Australia. This signifies compliance with the
Australian EMC Framework regulations under the terms of the
Radio Communications Act of 1992.
This product complies with the (2002/96/EC) marking
equipment. The affixed product label indicates that you must not
discard this electrical/electronic product in domestic household
waste.
U2802A 31-Channel Thermocouple Input User’s Guide V
General Safety Information
WARNING
CAUTION
• 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 than the rated voltage (as marked on the device)
between terminals, or between terminal and external ground.
• Always use the device with the cables provided.
• Observe all markings on the device before connecting to the device.
• Turn off the device and application system power before connecting to
the I/O terminals.
• When servicing the device, use only specified replacement parts.
• Do not operate the device with the removable cover removed or
loosened.
• Do not connect any cables and terminal block prior to performing
self-test process.
• Use only the power adapter supplied by the manufacturer to avoid any
unexpected hazards.
• Do not load the input and output terminals above the specified
operating limits. Input terminals should not exceed ±10 V with respect
to the module ground. Applying excessive voltage or overloading the
device will cause irreversible damage to the circuitry.
• Applying excessive voltage or overloading the input terminal will
damage the device permanently.
• If the device is used in a manner not specified by the manufacturer, the
protection provided by the device may be impaired.
• The U2802A can only be used with U2355A or U2356A DAQs and used
with the SCSI cables provided.
• Always use dry cloth to clean the device. Do not use ethyl alcohol or
any other volatile liquid to clean the device.
• Do not permit any blockage of the ventilation holes of the device.
VI U2802A 31-Channel Thermocouple Input User’s Guide
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 product in domestic household waste.
Product Category:
With reference to the equipment types in the WEEE directive Annex 1, this
instrument is classified as a “Monitoring and Control Instrument” product.
The affixed product label is shown as below:
Do not dispose in domestic household waste
To return this unwanted instrument, contact your nearest Agilent office, or visit:
http://www.agilent.com/environment/product
for more information.
U2802A 31-Channel Thermocouple Input User’s Guide VII
Environmental Conditions
The table below shows the general environmental requirements for the product.
Environmental Conditions Requirements
Temperature Operating temperature from 0
Humidity Relative humidity at 50% to 85% RH (Non-condensing)
Altitude Altitude up to 2000 meters
Storage compliance –40 °C to +70 °C
°C to +55 °C
VIII U2802A 31-Channel Thermocouple Input User’s Guide
In This Guide...
1Getting 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 Features and Functions
This chapter contains details of the product features, applications,
system overview and theory of operation. From this chapter, you
will understand the Agilent U2802A 31- channel thermocouple
input system overview and functionality of this device.
3 Pin Configurations and Assignments
This chapter described the Agilent U2802A 31- channel
thermocouple input device pin configurations and connector pinout
for user’s reference.
4 Product Specifications
This chapter specifies the environmental conditions,
characteristics, and specifications of the Agilent U2802A
31- channel thermocouple input device. It also covers the system
accuracy, typical performance and guidelines to make accurate
temperature measurements.
5 Calibration
This chapter contains the calibration information and factory
restore calibration procedure for the Agilent U2802A 31- channel
thermocouple input device.
U2802A 31-Channel Thermocouple Input User’s Guide IX
Declaration of Conformity (DoC)
The Declaration of Conformity (DoC) for this instrument is
available on the Web site. You can search the DoC by its product
model or description.
http://regulations.corporate.agilent.com/DoC/search.htm
X U2802A 31-Channel Thermocouple Input User’s Guide
Contents
Notices II
Safety Information III
Environmental Conditions VIII
In This Guide... IX
Declaration of Conformity (DoC) X
1 Getting Started
Introduction to Agilent U2802A 31-Channel Thermocouple Input 6
Product Overview 7
Standard Purchase Items Checklist 10
Installations and Configurations 11
IVI-COM Drivers 12
2 Features and Functions
Features 18
Applications 19
System Overview 20
Theory of Operation 21
3 Pin Configurations and Assignments
Pin Configurations 30
Connector Pinout 36
4 Product Specifications
General Specifications 40
Product Characteristics 41
System Accuracy Specifications 43
System Typical Performance 49
Making Accurate Temperature Measurements 51
Contents 1
5 Calibration
Calibration Information 54
Zeroing Function 54
Restore Factory Calibration 55
Contents 2
List of Figures
Figure 2-1 System overview of U2802A with DAQ 20
Figure 2-2 System functionality block diagram for U2802A 21
Figure 2-3 Functional block diagram for U2802A 22
Figure 2-4 Functional block diagram for thermocouple mode in U2802A 23
Figure 2-5 Floating signal source configuration in U2802A 24
Figure 2-6 Ground-referenced and differential signal sources configuration in
U2802A 25
Figure 3-7 U2802A pin assignment 30
Figure 3-8 Connector 1 pin assignment for U2355A and U2356A 36
Figure 3-9 Connector 2 pin assignment for U2355A and U2356A 37
Figure 4-10 Thermoelectric characteristics for various thermocouple types 49
Figure 4-11 U2802A measurement accuracy plot for various thermocouples
type 50
Contents 3
List of Tables
Table 4-1 U2802A measurement accuracy with U2355A or U2356A, at 23 °C ± 5 °C,
with different number of averaging points. 43
Table 4-2 U2802A measurement accuracy with U2355A, at 0 to 18 °C and 28 to 45 °C,
with different number of averaging points. 44
Table 4-3 U2802A measurement accuracy with U2356A, at 0 to 18 °C and 28 to 45 °C,
with different number of averaging points. 45
Contents 4
Agilent U2802A 31-Channel Thermocouple Input
User’s Guide
1 Getting Started
Introduction to Agilent U2802A 31-Channel Thermocouple Input 6
Product Overview 7
Product Outlook 7
Product Dimensions 9
Standard Purchase Items Checklist 10
Installations and Configurations 11
IVI-COM Drivers 12
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.
Agilent Technologies
5
1Getting Started
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 thermocouple into an output voltage range suitable for
data acquisition (DAQ) device (± 10 V).
The Agilent U2802A thermocouple signal conditioner is to be used in
conjunction with the U2355A or U2356A model DAQ to enable
temperature measurements using thermocouples.
It works as a standalone device attached to a single DAQ. The U2802A
thermocouple device is connected to the modular DAQ via SCSI cables.
Agilent U2802A accepts eight standard thermocouple types defined in the
NIST ITS-90 Thermocouple Database, which are Type B, E, J, K, N, R, S
and T.
It is ideal for a broad variety of temperature and voltage measurement
applications in education, industrial and scientific environments. The
U2802A comes with an on- board EEPROM features. Hence, it allows user
to store calibration data in volatile memory. Therefore, the U2802A is
robust, cost- effective, and user friendly device.
For detailed product specifications, please refer to “General Specifications”
on page 40.
6 Agilent U2802A 31-Channel Thermocouple Input User’s Guide
Product Overview
Connector 1
Connector 2
Detachable
Cover
U2802A
31-Channel Thermocouple Input
Railing Guide
Strain Release Assembly
Footer
Product Outlook
Top Vi e w
Getting Started 1
Agilent U2802A 31-Channel Thermocouple Input User’s Guide 7
Front View
1Getting Started
Side View
Bottom View
Ventilation
Holes
8 Agilent U2802A 31-Channel Thermocouple Input User’s Guide
Product Dimensions
U2802A
31-Channel Thermocouple Input
Top Vi e w
Getting Started 1
Front View
Agilent U2802A 31-Channel Thermocouple Input User’s Guide 9
1Getting Started
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 Sales Office.
✔ Agilent U2802A 31- channel thermocouple input device
✔ Power supply splitter
✔ Two 68- pin SCSI cables (1 m)
✔ One J- type thermocouple
✔ Agilent USB Modular Products and Systems Quick Start Guide
✔ Agilent USB Modular Products and Systems Product Reference
DVD- ROM
✔ Agilent Automation- Ready CD- ROM (contains the Agilent IO Libraries
Suite)
✔ Certificate of Calibration
10 Agilent U2802A 31-Channel Thermocouple Input User’s Guide
Installations and Configurations
NOTE
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 stated in the Agilent USB Modular
Products and Systems Quick Start Guide.
You need to install IVI-COM driver before using the U2300A Series with Agilent
VEE, LabVIEW or Microsoft Visual Studio.
Getting Started 1
Agilent U2802A 31-Channel Thermocouple Input User’s Guide 11
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