NI NIPCI-4351 High-precision data acquisition Datasheet

High-Precision Data Acquisition
NI PCI-4351, NI PXI-4351
◾◾ Temperature and voltage loggers
◾◾ Accuracy – 0.42 °C for J-type
thermocouples, 0.03 °C for
thermistors, 0.12 °C for RTDs
◾◾ 16 voltage or 12 thermocouple
inputs; up to 60 readings/s
◾◾ 8 digital I/O lines (TTL)
◾◾ Autozero and cold-junction
compensation
Family
Bus
Voltage/
(Thermocouple)
Channels
NI 4351
PCI, PXI
16/(14)
Operating Systems
◾◾ Windows XP/2000/NT
◾◾ LabVIEW Real-Time
Recommended Software
◾◾ LabVIEW
◾◾ LabWindows™/CVI
◾◾ Measurement Studio
Driver Software (included)
◾◾ NI-435x instrument driver
◾◾ Traditional NI-DAQ (Legacy)
reject 50, 60, and 400 Hz noise, based on the reading rate. The input circuitry
RTD
Accuracy
(°C)
Thermistor
Accuracy
(°C)
Resistance
Measurement
0.12
0.03
Excellent
Table 1. High-Precision DAQ Selection Guide
Overview
delivers ±42 V overvoltage protection and per-channel lowpass, antialiasing
filters. An NI 4351 device features software-selectable ground referencing
on a channel-by-channel basis, so you can measure both floating and groundreferenced signals together; it also features per-channel open-thermocouple
detection. When open-thermocouple detection is enabled, the input channel is
connected to +2.5 VDC through a 10 MΩ resistor. When a thermocouple breaks
The NI PCI-4351 and PXI-4351 are precision computer-based digitizers designed
or is disconnected, the reading rapidly increases to 100 mV or more, indicating
specifically for high-accuracy temperature measurements (thermocouples,
an open-circuit condition.
RTDs, thermistors), resistance measurements, chromatography measurements,
and low-frequency analog signal measurements within ±15 V. Available for
PCI and PXI/CompactPCI, these devices feature ±0.42 °C, J-type thermocouple
accuracy; ±0.12 °C RTD accuracy; ±0.03 °C thermistor accuracy; 5½-digit voltage
measurements; power line noise rejection filters; and precision current source
for RTD and thermistor excitation. NI 4351 devices combine the functionality
Precision Current Excitation
These devices feature a 25 μA precision current source for excitation
of RTDs, thermistors, or other resistive devices. The source excites the total
system resistance of up to 600 kΩ. An NI 4351 also features an additional
1 mA precision current source for RTDs or other resistive devices for total system
of stand-alone temperature and voltage meters and chromatographs with
resistance of up to 15 kΩ.
the flexibility and benefits of your computer, so you can build highly capable
Digital I/O and Alarm Outputs
computer-based data-logging systems. As with all computer-based digitizers,
NI 4351 devices can easily integrate into your Internet-based applications.
Hardware
Precision Analog Input
NI 4351 devices have 16 differential analog inputs. Each device has a 24-bit
analog-to-digital converter (ADC) and six possible reading rates – 10, 50, and
60 readings/s in single-channel acquisition mode and 2.8, 8.8, and 9.7 total
readings/s in multiple-channel acquisition mode. For channel speed, divide the
total readings/s by the number of channels acquired. Digital filters automatically
An NI 4351 has eight 5 V/TTL digital lines. You can individually configure each
line as an input or an output. You can use the lines as general-purpose digital I/O
or as control lines for alarms. Each line sinks or sources 8 mA. With the TBX-68T
or CB-68T, you can increase the sinking and sourcing capability of these digital
lines to 64 and 15 mA, respectively. With digital signal conditioning accessories,
such as the ER-8, SSR Series, and the SC-206x, you can use an NI 4351 to
control relays and drive optically isolated digital I/O.
High-Precision Data Acquisition
I/O Connector
Recommended Accessories
NI 4351 devices have a 68-pin shielded latched male connector. ACH±<0..7⁄15>
You can choose from several accessories, shown in Table 2, to accurately
are the 8/16 differential analog input channels. AGND is the analog ground.
measure temperature, voltage, or resistance.
IEX±<0..1> are for the current excitation sources (25 μA and 1 mA). DIO<0..3⁄7>
NI 435x Platforms
Accessory
Thermocouple only
PCI, PXI
TC-2190 and SH6868 cable
Software
Voltage, resistance,
chromatography only
PCI, PXI
TBX-68 and SH6868 cable
PCI, PXI
Use the NI-435x instrument driver to integrate a device into your test software.
Temperature,
voltage, resistance,
chromatography
TBX-68T and SH6868 cable;
CB-68T with CA-1000 and SH6868 cable
are the TTL lines and are referenced to DGND.
Instrument Driver
The instrument driver works with:
◾◾ NI LabVIEW
Measurement Type
Table 2. NI 435x Accessory Selection Guide
◾◾ NI Measurement Studio
◾◾ Visual C/C++
◾◾ Visual Basic
With a computer-based NI 4351 device, you can create distributed measurement
systems with ease, taking full advantage of the Web.
Ordering Information
NI PCI-4351.....................................................................................777789-01
NI PXI-4351.....................................................................................777790-01
Includes instrument driver.
For more information on extended warranty and value-added services, visit ni.com/services.
BUY NOW
For complete product specifications, pricing, and accessory information,
call 800 813 3693 (U.S.) or go to ni.com/daq.
BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.)
2
High-Precision Data Acquisition
TC-2190 – Shielded, rack-mount adapter with 14 thermocouple miniconnectors,
TBX-68 – General-purpose terminal block to which you can connect up to 16
spring terminals for four digital I/O lines, isothermal construction, a cold-junction
unconditioned analog signals as well as excitation and digital signals. Use the
sensor on channel 0, and autozeroing circuitry on channel 1. Use with the
TBX-68 with the SH6868 shielded cable.
SH6868 shielded cable.
TBX-68....................................................777141-01
TC-2190..................................................777510-01
SH6868 – 68-pin shielded cable terminated with two 68-pin 0.050 series D-type
TBX-68T, CB-68T – 68-pin, DIN-rail mountable terminal block with screw
connectors. The cable is used to connect an NI 4351 device to 68-pin accessories
terminals for 14 unconditioned temperature, voltage, or resistance signals as
such as the TC-2190, TBX-68T, TBX-68, and CB-68T.
well as for excitation. The TBX-68T also has eight digital I/O lines, isothermal
1 m ......................................................182419-01
design for cold-junction compensation, and autozeroing circuitry on channel 1.
2 m ......................................................182419-02
The CB-68T is similar to the TBX-68T but is designed to mount inside the
CA-1000 custom connectivity enclosure.
Both the TBX-68T and CB-68T provide circuitry to increase your sinking and
sourcing capabilities to 64 and 15 mA, respectively. They also have two 26-pin
connectors to which you can connect digital signal conditioning accessories such
as the SSR-8, ER-8, and the SC-206x.
TBX-68T..................................................777232-01
CB-68T....................................................777926-01
TC-2190
TBX-68T
CB-68T and CA-1000
TBX-68
BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.)
3
High-Precision Data Acquisition
Specifications
Thermistor Accuracy
» For complete specifications, see the NI 435x User Manual
Temperature ..........................................
0 to 50 °C
at ni.com/manuals.
Error ......................................................
0.03 °C
Temperature coefficient ........................
0.001 °C/°C
Thermocouple Accuracy
Error (°C)
TC Type
°C
10 Hz
50 Hz
60 Hz
Temperature
Coefficient
(°C/°C)
J
-100
0.53
0.61
0.74
0.02
K
N
E
T
R
S
B
Accessory
Error
(°C)
0.25
see the NI 435x User Manual at ni.com/manuals.
Analog Input
0
0.42
0.49
0.59
0.42
0.47
0.55
-100
0.60
0.72
0.89
0
0.45
0.54
0.67
1,000
0.60
0.69
0.81
1,372
0.74
0.84
0.99
-100
0.68
0.84
1.08
0
0.54
0.67
0.86
400
0.42
0.51
0.65
Mode
Reading Rate (Readings/s)
Power Line Noise Rejection (Hz)
1,300
0.57
0.66
0.80
Single channel
10
50, 60, 400
50
50, 400
-100
0.55
0.62
0.74
0
0.41
0.46
0.55
500
0.35
0.40
0.46
1,000
0.46
0.50
0.57
-150
0.81
0.96
1.17
0
0.46
0.55
0.68
400
0.33
0.39
0.47
250
0.82
1.16
1.65
1,000
0.72
0.99
1.37
1,767
0.91
1.19
1.60
250
0.91
1.28
1.83
1,000
0.77
1.05
1.47
1,767
0.96
1.27
1.72
600
1.08
1.64
2.47
1,000
0.76
1.14
1.69
1,820
0.74
1.05
1.50
Input characteristics
0.03
0.03
0.02
0.27
0.26
16 differential or 14 temperature
Digits.................................................
5½
Type of ADC.......................................
Delta-sigma
ADC resolution..................................
24 bits, no missing codes
Calibration cycle................................
1 year
0.28
0.03
0.36
60
60
2.8 (1.41)
50, 60, 400
8.8 (2.11)
50, 400
9.7 (2.1 )
60
1
Resistance ranges >50 k
2
Total number of readings per second (for single-channel speed, divide by the
number of channels acquired)
1
0.06
0.12
0.07
0.13
Reading Rates
Input coupling........................................
DC
Maximum working voltage (signal + common mode)
Range >2.5 V.....................................
0.11
0.00
Each input should remain
within ±15 V of ground
Range ≤2.5 V.....................................
Each input should remain
within ±2.5 V of ground
Overvoltage protection
(ACH<0..8/15>, IEX± <0..1>)..............
10 Hz
50 Hz
I
2
EX0
Temperature
Coefficient
(°C/°C)
60 Hz
I
I
I
I
-200
0.05
1.00
0.06
1.33
0.07
1.81
0.02
0
0.12
1.14
0.13
1.49
0.14
2.00
–
100
0.16
1.22
0.17
1.58
0.18
2.10
–
300
0.23
1.38
0.24
1.76
0.26
2.32
–
600
0.36
1.66
0.37
2.08
0.39
2.69
–
1
EX1
Number of channels..........................
Multiple-channel2
scanning
Error (°C) (100 Ω RTD)
I
For detailed resistance accuracy and DC voltage accuracy specifications,
760
RTD Accuracy
°C
Resistance Accuracy and DC Voltage Accuracy
2
EX0
1
EX1
2
EX0
1
EX1
±42 V powered on, ±17 V powered off
Data transfers........................................
Interrupts, programmed I/O
Warm-up time........................................
30 minutes
Amplifier Characteristics
Input impedance
Normal powered on...........................
>1 GΩ in parallel with 0.39 µF
Powered off.......................................
10 kΩ
Overload............................................
10 kΩ
With 100 Ω RTD, 25 µA current source. 2With 100 Ω RTD, 1 mA current source (NI 4351 only) .
1
BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.)
4
High-Precision Data Acquisition
Open-thermocouple detection...............
10 MΩ between CH+ and +2.5 V
Safety and Compliance
(software selectable)
Ground-referencing................................
10 MΩ between CH- and ground
Safety
(software selectable)
Input bias current...................................
<500 pA
safety for electrical equipment for measurement, control, and laboratory use:
◾◾ IEC 61010-1, EN 61010-1
CMR (DC, 50 Hz, 60 Hz, 400 Hz)
Range ≥2.5 V.....................................
80 dB
Range <2.5 V.....................................
100 dB
NMR (50 Hz, 60 Hz, 400 Hz)...................
◾◾ UL 61010-1, CSA 61010-1
Note: For UL and other safety certifications, refer to the product label or visit
ni.com/certification, search by model number or product line, and click the
>100 dB
appropriate link in the Certification column.
Dynamic Characteristics
Bandwidth..............................................
This product is designed to meet the requirements of the following standards of
Electromagnetic Compatibility
20 Hz
This product is designed to meet the requirements of the following standards of
EMC for electrical equipment for measurement, control, and laboratory use:
◾◾ EN 61326 EMC requirements; Minimum Immunity
Excitation
Parameter
Level
Maximum Load Resistance
Temperature Coefficient
±Ex0
25 µA
600 kΩ
±15 ppm
±Ex1
1 mA
15 kΩ
±15 ppm
◾◾ EN 55011 Emissions; Group 1, Class A
◾◾ CE, C-Tick, ICES, and FCC Part 15 Emissions; Class A
Note: For EMC compliance, operate this device according to
Digital I/O and Alarm Outputs
product documentation.
Number of lines ....................................
8
Compatibility..........................................
TTL
CE Compliance
Digital Logic Levels
Power-on state.......................................
Tristate (weak pull-up)
Data transfers........................................
Programmed I/O
Bus interface..........................................
PCI, PXI, USB
This product meets the essential requirements of applicable European Directives,
as amended for CE marking, as follows:
◾◾ 2006/95/EC; Low-Voltage Directive (safety)
◾◾ 2004/108/EC; Electromagnetic Compatibility Directive (EMC)
Note: Refer to the Declaration of Conformity (DoC) for this product for any
additional regulatory compliance information. To obtain the DoC for this product,
Power Requirements
visit ni.com/certification, search by model number or product line, and click
+5 VDC
the appropriate link in the Certification column.
PCI-4351............................................
480 mA
PXI-4351............................................
480 mA
Physical
Waste Electrical and Electronic Equipment (WEEE)
EU Customers: At the end of their life cycle, all products must be
sent to a WEEE recycling center. For more information about WEEE
recycling centers and National Instruments WEEE initiatives,
Dimensions
PCI......................................................
11.2 by 18.8 cm (4.4 by 7.4 in.)
PXI......................................................
10.0 by 16.0 cm (3.9 by 6.3 in.), 3U
I/O connector.........................................
68-pin male, shielded and latched
visit ni.com/environment/weee.htm.
Environment
Operating temperature..........................
0 to 55 °C
Storage temperature..............................
-20 to 70 °C
Relative humidity...................................
10 to 90%, noncondensing
BUY ONLINE at ni.com or C ALL 800 813 36 93 (U.S.)
5
NI Services and Support
your needs around the globe and through
PL
AN
MA
IN
NI has the services and support to meet
IN
TA
the application life cycle – from planning
and development through deployment and
SERVICE
NEEDS
ongoing maintenance. We offer services
P
DE
EL
OP
and service levels to meet customer
LO
Y
requirements in research, design, validation,
V
DE
and manufacturing.
Visit ni.com/services.
Local Sales and Technical Support
In offices worldwide, our staff is local to the country, giving you access to
engineers who speak your language. NI delivers industry-leading technical
support through online knowledge bases, our applications engineers,
and access to 14,000 measurement and automation professionals within NI
Developer Exchange forums. Find immediate answers to your questions at
ni.com/support.
We also offer service programs that provide automatic upgrades to your
application development environment and higher levels of technical support.
Training and Certification
Visit ni.com/ssp.
NI training is the fastest, most certain route to productivity with our products.
Hardware Services
NI training can shorten your learning curve, save development time, and reduce
maintenance costs over the application life cycle. We schedule instructor-led
System Assurance Programs
courses in cities worldwide, or we can hold a course at your facility. We also
NI system assurance programs are designed to make it even easier for you
offer a professional certification program that identifies individuals who have
to own an NI system. These programs include configuration and deployment
high levels of skill and knowledge on using NI products.
services for your NI PXI, CompactRIO, or Compact FieldPoint system. The NI Basic
Visit ni.com/training.
System Assurance Program provides a simple integration test and ensures that
Professional Services
your system is delivered completely assembled in one box. When you configure
your system with the NI Standard System Assurance Program, you can select
Our NI Professional Services team is composed of NI applications and systems
from available NI system driver sets and application development environments
engineers and a worldwide National Instruments Alliance Partner program of
to create customized, reorderable software configurations. Your system arrives
more than 600 independent consultants and integrators. Services range from
fully assembled and tested in one box with your software preinstalled. When
start-up assistance to turnkey system
you order your system with the standard program, you also receive system-
integration. Visit ni.com/alliance.
specific documentation including a bill of materials, an integration test report,
a recommended maintenance plan, and frequently asked question documents.
OEM Support
Finally, the standard program reduces the total cost of owning an NI system
We offer design-in consulting and product integration assistance if you want to
online product advisors at ni.com/advisor to find a system assurance program
use our products for OEM applications. For information about special pricing and
services for OEM customers, visit ni.com/oem.
by providing three years of warranty coverage and calibration service. Use the
to meet your needs.
Calibration Services
NI recognizes the need to maintain properly calibrated devices for highaccuracy measurements. We provide manual calibration procedures, services
to recalibrate your products, and automated calibration software specifically
designed for use by metrology laboratories. Visit ni.com/calibration.
Repair and Extended Warranty
NI provides complete repair services for our products. Express repair and
advance replacement services are also available. We offer extended warranties
to help you meet project life-cycle requirements. Visit ni.com/services.
ni.com
n
800 813 3693
National Instruments
n
[email protected]
©2009 National Instruments. All rights reserved. CompactRIO, CVI, FieldPoint, LabVIEW, National Instruments, National Instruments Alliance Partner, NI, and ni.com are trademarks of National Instruments. The mark LabWindows is
used under a license from Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the United States and other countries. Other product and company names listed are trademarks or trade names of their
respective companies. A National Instruments Alliance Partner is a business entity independent from National Instruments and has no agency, partnership, or joint-venture relationship with National Instruments. 2009-11007-101-D
Similar pages