Omega Products iNET-240 User Manual

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Expandable Modular Data Acquisition System
iNET-400 Series

iNET-555

$

990

Complete Starter

System

⻬ USB 2.0 High Speed Data

Acquisition Hardware for
Windows®≥XP SP2, Vista
or 7 (XP/VS/7)

⻬ Analog and Digital Input

and Outputs

⻬ Free instruNet World Software
⻬ Directly Connects to

Thermocouple, RTD,
Thermistor, Strain Gage,
Load Cell, Voltage,
Current, Resistance and
Accelerometer Input’s

⻬ Reduce Noise by Placing

Boxes Near Sensors and
up to 1000' From Noisy
Computer

⻬ Digitize Any Combination

of Channels at 166,000
Samples Per Second Aggregate

⻬ Each Channel has

Independently Programmable
Analog Filters, Integration
Time, Voltage Range, and
Sample Rate; Programmable
Digital Filters on All Channels
(LP, HP, BP, BS)

The iNET-400 system is a low cost
card cage that attaches to Windows
computers via USB 2.0. The
advantage of a card cage is that you
can select which I/O modules to
install as needed to build a
customized system. The instruNet
card cage typically has one A/D
measurement module and
additional modules provide signal
conditioning. The conditioned
analog signal is routed to the A/D
module via the backplane.

To Order, Call or Shop Online at omega.com

Shown smaller
than actual size.

iNET-400 card
cage, $390.

This is dramatically different from
comparable systems which place
A/D measurement electronics on
each module. The advantage of the
iNET-400 topology is cost. After the
1st module is installed, additional
iNET-400 channels are conditioned
at a very low cost per channel.

iNET-400 measurement modules
have universal inputs that enable
one to directly connect each channel
to one of: thermocouple, thermistor,
strain gage, load cell, counter/timer,
RTD, voltage, current, resistance and
accelerometer.

Absolute accuracy for all of these
sensor types is specified. In some
cases, the end user adds an external
shunt resistor. The advantage of
universal inputs is cost.

Low Cost 4/8/12/16-Slot
Card Cages

The iNET-400 card cage provides
4 slots, and multiple iNET-400’s
can be bolted together by the end
user, side-by-side, to create an
8, 12, or 16 slot system. In many
applications, one iNET-400
with 4 slots is sufficient.

iNET-410, $190.

4/8/12/16-slot card cages

4 slots

8 slots

12 slots

16 slots

iNET-430, $490.

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Connect Directly to Common Sensors

Data acquisition cards connect directly to
thermocouple, thermistor, strain gage, load cell,
counter/timer, RTD, voltage, current, resistance and
accelerometer.

Voltage

Resistance

Current

Strain Gage

RTD

Thermistor

The iNET-400 card cage is 15 D x 11 W x 14 cm H
(6 x 4.5 x 5.6") in size. The slots are numbered such
that #1 is the left-most slot, #2 is to the right of #1, and
so forth and so on. Cards are held into position with
jackscrews that are tightened with a slotted
screwdriver. Slot #1 is a special slot and is used to
interface to a computer.

The iNET-410 card slides into slot #1 and then cables
to the computer via a DB25 cable that connects to an
instruNet controller. Also, an iNET-300 Power Adaptor
cable is used to route power from an iNET-312-8
desktop power supply to the iNET-410 interface card
in slot #1, which in turn routes that power to the card
cage backplane (i.e. pcb at back of card cage that
attaches to all cards). This is illustrated in the below
diagram.

The iNET-400 Card Cage needs at least one
iNET-430 A/D card if analog voltages are to be
measured. The iNET-430 cards includes an A/D
converter and serves this purpose.

The iNET-420 and iNET-423 cards contain various
signal conditioning circuits and route signals along the
backplane to the iNET-430 for measurement. This
happens automatically and does not require
programmer intervention, other than insertion of cards
and attaching end user signals to the card’s front
panel connectors.

Windows PC

iNET-300 cable
(included with iNET-312-8)

iNET-240

110 to 220 Vac

Thermocouple

iNET-312-8
Power supply

i410

i430

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To Order, Call or Shop Online at omega.com

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iNET-240 instruNet DSP Card

Each instruNet Network is controlled by an instruNet
DSP controller card that attaches to a Microsoft
Windows computer. The iNET-240 attaches to a free
USB 2.0 high speed port (requires Windows ≥ XP
Sp2). Each Controller is an independent computer in
itself that utilizes a powerful 32-bit DSP processor and
onboard RAM to control all aspects of data acquisition
along its network. All real-time tasks are off-loaded to
this processor, therefore the host computer is not
burdened with real-time issues. Between 1 and 4
controllers can be installed, space permitting, since
each controller operates independently.

Connect up to 8 iNET-400 Card Cages

Each instruNet network supports up to 8 instruNet
iNET-400 card cages.

instruNet Network

These devices are connected in a daisy-chain
configuration to form a chain of Devices. Each network
can be up to 300 meters long. All networks are
anchored with an instruNet Terminator at the far end,
and an instruNet Controller at the near end. This
makes instruNet a cost effective method for designing
large scale, high speed, multi-channel data acquisition
systems.

iNET-240, $290,
USB controller,
shown smaller
than actual size

instruNet terminator

iNET-400

card cage

Windows PC

DB-25 connector (male)

iNET-240
instruNet

controller

DB-25 cable DB-25 connector (female)

iNET-400

card cage

instruNet Version ≥ 3.0 software
requires Windows XP, Vista, or 7
(XP/VS/7) computer with at least

Summary of Computers
Compatible with instruNet

Controller

Model No. Type Size Computer Required

iNET-240 USB 2.0 4 x 2 x 1" 32-bit or 64-bit Windows ≥ XP SP2,

Vista or 7 (XP/VS/7) Computer with
1 available USB 2.0 High Speed
port (480Mbaud).

256MB of RAM Memory and at least
256 MB of free disk space. The
iNET-240 USB controller requires
32-bit or 64-bit Windows XP SP2
(service pack #2) or newer.
instruNet ≥ v3.0 software does not
run under Linux, does not run on
Windows 95/98/Me/Nt/2K
computers and does not run on
Macintosh computers.

To Order, Call or Shop Online at omega.com

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