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Features
NetDAQ Data Acquisition Units give you a powerful combination of hardware and
software that's ideal for sm all-to-medium
scale process monitoring and test systems. They answer the escalating need for
measurement, recording, and analysis tools that enable you to improve quality, maximize
process efficiency and meet regulatory requirements. Building blocks of 20 channels can be
expanded into integrated systems of up to 400 channels. Choose between two models for
speed up to 1000 rps and accuracy up to 0.01%. All NetDAQs utilize Fluke's patented
Universal Input Module which accepts any combination of analogue
input types for each of its
20 channels - without the need for external signal conditioning. Simply pre-wire the
Universal Input Module to directly measure temperature, dc volts, ac volts, resistance,
4-20 mA, and frequency. (For more information refer to the Universal Input Module in this
section.)
Distributed NetDAQ systems plug right into your existing networks to send data
directly to a PC. This saves the cost of setting a new network and allows multiple users
to simultaneously view data in real time. A NetDAQ unit can also be used as a portable
dedicated system connected to a notebook computer for maintenance, product validation,
research, and troubleshooting applications.
Features at a Glance:
 | Data Acquisition, Up to 1,000 Readings Per Second |
| 20 Analogue Input Channels Expandable Up to 400 Channels |
| Extensive Optional Plotting and Trending Capabilities |
| Optional Wall, Cabinet, or Rack Mounting |
| May Be Connected to Ethernet Networks |
| Replaces Chart Recorders |
System
Configuration
 Set up your NetDAQ system the way you
want it. You can set up your NetDAQ system in several different ways. Configure an
isolated system, daisy-chaining as many as 20 NetDAQ units to your PC with a high-speed
communication line. This is a quick, simple way to send real time data directly to a PC
(see fig.1).
 Or,
add NetDAQ units directly to your company's network. Sharing the network cabling and
hardware that's already installed saves you time and expense. And, if you wish, all the
users on your network have an easy way to access the data you're collecting (see fig. 2).
 A
third configuration option is to add an isolated NetDAQ system to your company's network.
This method isolates your data acquisition application from your company's network while
still providing the advantages of multi-user viewing. High-speed applications won't be
slowed down by network operations, and critical applications are completely protected from
network failure (see fig. 3).
High-speed communication makes it easier to get results. No matter how you set up your
data collection system, high-speed networked communication offers you a number of
benefits. It gives you the ability to implement distributed applications with NetDAQ units
in multiple locations. In these applications, multiple PC users can monitor data, in real
time, as it is collected. Support for up to 3,000 readings per second (rps) from multiple
instruments keeps throughput high. And you're ensured of highly reliable results, even
over long distances.
NetDAQ supports both common Ethernet network wiring types - 10Base2 (coax) and 10BaseT
(twisted pair) - and all major network operating systems including: Microsoft, Novell,
Banyan Vines, and other Ethernet networks that use TCP/IP communications protocol.
Choose the level of performance you need
NetDAQ systems are modular and
expandable up to 400 channels. With the 20-channel units as building blocks, you can buy
the number of channels you need for your application. Later, add units if you need them.
Because every application is different, we offer a selection of accuracies and
measurement rates to match your application needs. The 2640A offers 0.01% V dc - 0.3°C TC
accuracy and 18 bit resolution, scanning 6 - 100 channels per second. The 2645A can scan
at 48 to 1000 channels per second with 16 bit resolution and 0.01% vdc - 0.6°C TC
accuracy.
All models offer a totaliser input channel which counts up to 4,294,967,295
"on/off" events. This channel is continuously sampled and is recorded with each
scan of the other input channels.
Each analogue and calculated channel has two user-defined alarm limits which can be
independently configured as high, low, or off, and assigned to one of the eight digital
I/O lines which can initiate action based on alarm conditions. Or these digital I/O lines
can be used independently as inputs for contact closures, switches, or TTL levels.
Application
Software
Powerful application software makes
real time decisions easier. The NetDAQ Logger for Windows software makes configuring and
reconfiguring your system a snap. This intuitive Microsoft® Windows-based
software plots your data graphically, so you can get right down to making decisions. With
its advanced trending capabilities, you can look at real time data in context of
historical data, compare multiple channels, or zoom in on a particular time span. You can
also print plots directly from NetDAQ Logger. For further analysis or to generate reports,
cut and paste either plots or data into word processor or spreadsheet programs.
System Requirements:
| 486 (or better) PC |
| Windows 95 or Windows NT |
| 4MB RAM |
| 5MB Free disk space |
The Universal Input Module for easy
configuration
NetDAQ's Universal Input Module
lets you easily measure just about any electrical or physical parameter without changing
hardware or adding external signal conditioning. Any combination of dc voltage, ac
voltage, thermocouples, current, RTD, resistance (2- or 4-wire), or frequency measurement
can be connected directly to the input module. Fluke's proprietary signal conditioning
capability is built directly into the NetDAQ unit, thus eliminating the need to purchase
external conditioning modules.
The 2640A NetDAQ can measure up to 300V at up to 100 rps. The 2645A is the first
instrument of its type capable of directly measuring multiple inputs of up to 50V at 1000
readings per second. With Mx+B scaling you can convert a wide range of signals (0-10V or
4-20 mA) into standard engineering units.
Using Fluke's patented technology, thermocouple reference junction compensation occurs
automatically, by sensing the temperature of the input module's isothermal block.
Excellent isothermal performance is achieved by thick copper layers embedded just beneath
connection points, and an enclosure that protects inputs from changing environmental
conditions. And strain relief protects sensor wires from accidental disconnection.
For calibration, or use in another application, you can leave your field connections
set up at your site and merely plug and unplug the module when you want to move the NetDAQ
unit.
Accurate time
stamping
NetDAQ's non-volatile, on-board clock
time stamps data as measurements are taken ensuring proper recording regardless of network
traffic levels. NetDAQ's on-board memory buffers data in the event that network traffic
prevents timely delivery of data to the host PC.
Choose the packaging that suits your
application
The 2640A and 2545A NetDAQ units are
housed in Fluke's standard, field-tough metal case designed to resist effects of high EMI
and RFI environments. Both models have a simple front panel interface with just eight
buttons for local monitoring of all input measurements, and checking and setting
communication parameters.
If you need your NetDAQ close at hand but out of the way, either unit can be
permanently mounted on a wall, or in a rack or cabinet with optional mounting accessories.
For hazardous conditions, such as caustic or toxic environments, high temperatures or
humidity, the optional NEMA-4X enclosure provides durable protection and easy access.
Easy
calibration
 NetDAQ units are extremely stable,
but when you do need to calibrate one, we've made it very easy. The optional service
manual gives you simple, step by step calibration instructions. (An RS-232 interface is
provided on the NetDAQ units for calibration.)
Specifications
| General Specifications
|
| 2640 NetDAQ
|
| 2645 NetDAQ
General Specifications
| Channel Capacity |
Analogue
inputs: 20
Computed channels: 10
Digital I/O & Alarm Outputs: 8 total
Totalizer: 1 |
| Computed
Channels |
10 computed
channels can be created by processing analogue input channels and other computed channels
with the following methods: Addition, subtraction, multiplication, division, log, natural
log, exponent, square root, absolute value, integer function, average (average of a group
of channels), difference (difference between any two channels), difference (between a
channel and a group of averaged channels) |
| Scan Speed
|
2640A:
Slow: 6 channels/second nominal; Medium: 41 (50 Hz), 48 (60 Hz) channels/second nominal;
Fast: 100 channels/second nominal
2645A: Slow: 45 (50 Hz), 54 (60 Hz) channels/second nominal; Medium: 200
channels/second nominal; Fast: 1000 channels/second nominal |
| Analog to
Digital Converter |
2640A:
Multi-slope type, linear to 18 bits.
2645A: Multi-slope type, linear to 16 bits |
| Common
Mode Rejection (slow rate) |
2640A:
AC: >=120 dB (50/60 Hz, +/-0.1% max 1 k source imbalance); DC: >=120 dB.
2645A: AC: >=100 dB (50/60 Hz, +/-0.1% max 1 kOmega source imbalance); DC:
>=100 dB. |
| Normal
Mode Rejection (slow rate) |
50 dB @ 50/60
Hz, +/-0.1% |
| Common
Mode and Normal Mode Voltage Maximum |
2640A:
300 V dc or V ac rms (channels 1,11); 150 V dc or V ac rms (all other channels).
2645A: 50 V dc or 30 V ac rms (all channels) |
| Power
|
107 to 264 V
ac, 50 or 60 Hz (<15W), or 9 to 16 V dc (<6W) |
| Temperature,
Humidity (non-condensing) |
-20°C to
60°C. Storage: -40°C to 75°C, 5% to 95% RH |
| Electromagnetic
Interference (EMI) |
Passes FCC
EMI Class B Equipment, Vfg. 243, European Norms EN50081-1 and EN50082-1, (CE.) |
| Weight
|
3.7 kg (8.2
lbs.) |
2640
NetDAQ
| DC Volts |
Range:
90 mv to 150/300V
Resolution: 0.3 µv to 1 mV
Accuracy (3-Sigma): 0.01 %* |
| AC Volts
|
Range:
300 mv to 150/300V
Resolution: 10 µv to 10 mV
Accuracy (3-Sigma): 0.3%* |
| Resistance
|
Range:
15 Hz to 1MHz
Resolution: 0.01 Hz to 100 Hz
Accuracy (3-Sigma): 0.05 %* |
| Frequency
|
Range:
15 Hz to 1MHz
Resolution: 0.01 Hz to 100 Hz
Accuracy (3-Sigma): 0.05 % * |
| RTD (Pt
100) |
Range:
-200 to 600°C
Resolution: 0.003°C
Accuracy: 0.006°C * |
| J Type
Thermocouple |
Range:
-100 to 760°C
Resolution: 0.02 °C**
Accuracy (3-Sigma): 0.35°C * |
| K type
Thermocouple |
Range:
-100 to 1372°C
Resolution: 0.02°C**
Accuracy (3-Sigma): 0.4°C* |
| T Type
Thermocouple |
Range:
-100 to 400°C
Resolution: 0.02 %**
Accuracy: 0.3°C * |
| Other
Thermocouple Types |
R, S, B, C,
E, N |
*Total instrument accuracy for 90 days
following calibration and ambient temperature range of 18 to 28 Degrees C. Includes A/D
errors, linearization conformity, initial calibration error, isothermality errors,
reference junction conformity and power line voltage effects within the range from 107V ac
to 264V ac.
**Resolution is 0.02°C or 0.04°F over the useful range of base metal
thermocouples (J, K, T, E, N) and 0.1°C or 0.2°F resolution for types R, S, B, and C
with slow scan.
2645 NetDAQ
| DC Volts |
Range:
90 mv to 50V
Resolution: 3 µv to 10 mV
Accuracy: 0.01 %* |
| AC Volts
|
Range:
300 to 50V
Resolution: 10 µv to 1 mV
Accuracy: 6 %* |
| Resistance
|
Range:
300 ohm to 3 Megohm
Resolution: 10 milliohm to 100 ohm
Accuracy: 0.02 %* |
| Frequency
|
Range:
15 Hz to 1MHz
Resolution: 0.01 Hz to 100 Hz
Accuracy: 0.05%* |
| RTD (Pt
100) |
Range:
-200 to 600°C
Resolution: 0.03°C
Accuracy: 0.16°C* |
| J Type
Thermocouple |
Range:
-100 to 760°C
Resolution: 0.02°C**
Accuracy: 0.7°C* |
| K Type
Thermocouple |
Range:
-100 to 1372°C
Resolution: 0.02°C**
Accuracy: 0.8°C* |
| T Type
Thermocouple |
Range:
-100 to 400°C
Resolution: 0.02°C**
Accuracy: 0.7°C* |
| Other
Thermocouple types |
R, S, B, C,
E, N |
*Total instrument accuracy for 90
days following calibration and ambient temperature range of 18 to 28 Degrees C. Includes
A/D errors, linearisation conformity, initial calibration error, isothermality errors,
reference junction conformity and power line voltage effects within the range from 107V ac
to 264V ac.
**Resolution is 0.02°C or 0.04°F over the useful range of base metal
thermocouples (J, K, T, E, N) and 0.1°C or 0.2°F resolution for types R, S, B, and C
with slow scan.
Models, Options & Accessories
| Model Name |
Product Description |
| 2640A
|
NetDAQ Data
Acquisition Unit Included with Instrument: Universal Input Module, 4m Ethernet Cable, 50?
Terminator, Y BNC Adapter, T thermocouple, and power cable. |
| 2645A
|
NetDAQ Data
Acquisition Unit Included with Instrument: Universal Input Module, 4m Ethernet Cable, 50?
Terminator, Y BNC Adapter, T thermocouple, and power cable. |
Available
Accessories and Options
| Model Name |
Accessory or Option Description |
| 2600A-904 |
Trend Link
for Fluke |
| 2620A-100 |
Extra I/O
Connector Set: includes Universal Input Module, Digital I/O and Alarm Output Connectors
|
| 2640A-911 |
NetDAQ Logger
for Windows |
| 2640A-912 |
NetDAQ Logger
w/ Trending |
| 264XA-801 |
Ethernet Card
(10Base2, 10BaseT) |
| 264XA-802 |
Parallel-to-Lan
Adapter (10Base2) |
| 264XA-803 |
PCMCIA to LAN
Adaptor (Set of 12) (10Base 2, 10Base T) |
| 264XA-903 |
Developer's
Toolbox (16 bit) |
| 942615 |
NetDAQ
Service Manual |
| Y2641 |
19 Rackmount
kit, single/dual |
| Y2642 |
Wall/Cabinet
Mounting Plate |
| Y2643 |
4m Ethernet
Cable Kit |
| Y2644 |
NEMA-4X
(IP65) Enclosure |
For additional information or to order, call Rapid-Tech today
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