Multi Sensor Data Acquisition System

INET Series

High speed data acquisition

^£1,254.11 INET-100

PLACE ORDER

High speed Data Acquisition Sytem for Windows Computers
For user manuals and application notes visit the dedicated instrunet web site
INET-240 USB Controller has 32 or 64 bit Drivers for Windows 7/VISTA
16 Single-Ended/ 8 Differential 14 Bit Analogue Inputs, 8 Analogue Outputs and 8 Digital I/O
INET-200 PCI Controller Card Includes 10 Counter/Timer Channels
Direct Connect to RTD, Thermocouple, Voltage, Thermistor, Bridge and Strain Gauge Sensors
166 Ks/sec Throughput to RAM or Disk
Each Channel has Independently Programmable Analogue Filters, Integration Time, Voltage Range and Sample Rate
Programmable Digital Filters on All Channels
Includes Strip/Chart Software and Drivers for C, Visual Basic and TestPoint. Optional LabVIEW Drivers are available.

Plug-in Cards - View related products

Description

More information about how Data Acquisition works in this link.

The high speed acquisition instruNet system provides ten’s of microvolts of absolute accuracy instead of ten’s of millivolts, at the same cost and at the same throughput rates as typical general purpose data acquisition boards. It does this with a completely different topology where the analogue electronics are close to the sensor in electrically quiet boxes outside your PC, and noisy digital electronics are left inside the computer.
The external boxes contain signal conditioning amplifiers for each channel and can directly attach to sensors such as thermocouples, thermistors, RTD’s, strain gauges, resistance sources, current sources and voltage sources. The box returns engineering units to your PC (e.g. °C, Volts, Amps).
At the heart of the real-time system is a USB, PCI or PC-card controller board that plugs into a Windows based PC. Each controller contains a 32 bit microprocessor with 256KB of RAM that manages the external "network" of devices. All real-time tasks are off-loaded to this processor, therefore the host computer is not burdened with real-time issues.
Each instruNet iNET-100 box provides, 16 single-ended/8 differential analogue inputs, 8 analogue outputs and 8 digital I/O lines. The iNET-100 includes 44 screw terminals. The iNET-100B version adds 16 BNCs for analogue inputs.
The INET-200 PCI controller card also provides 10 counter/timer channels, each of which can function as a digital input bit, a digital output bit, a clock output channel or a period measurement input channel.
iNET PCI and USB Interfaces

Distributed and Expandable
The instruNet system is ideally suited for distributed measurement and control systems. The network cable can extend up to 300 metres. Each controller card in the PC can connect to up to 16 instruNet boxes for a total number of 256 analogue inputs, 128 analogue outputs and 128 digital I/O. For additional inputs, multiple controller cards can be placed in one computer with the maximum number of controller cards limited only by the number of available slots in the computer. Since each controller card has its own microprocessor, multiple cards do not place any additional burden on the computer. It should be noted that multiple instruNet boxes on a single network may degrade the maximum system throughput of 166Ks/sec.

High Current Version (HC)
The INET-100HC is similar to the INET- 100, yet the voltage output channels have a higher drive capability, providing up to 15mA of current to capacitive loads as high as 0.01uF. The INET-100 and INET-100B devices support only 4mA/.001uF voltage output drive. The INET-100HC is recommended for use with sensors that require excitation, such as strain gauges, RTDs and thermistors since these sensors may exceed the current or capacitive drive limits of the INET-100 or INET-100B. The INET-100HC provides greater compatibility with sensors that have capacitive loading on the excitation lines, therefore, the HC version is recommended for all sensors requiring excitation including RTDs and thermistors. Since the HC version has a greater power demand, an external power supply must be used. The INET-312-8 can be used to power up to three INET-100HC boxes.

Software
instruNet World, is a FREE application program. It manages, monitors and operates the instruNet system. It digitises long continuous waveforms, spools them to disk, views incoming waveforms in real-time and then allows post acquisition viewing-much like an oscilloscope or strip chart recorder. instruNet World provides a spreadsheetlike environment where one can set and view channel parameters such as sensor type, integration time, analogue filter, and digital filter. Each channel has it’s own row in the spreadsheet, with the various options in the columns. instruNet is also compatible with a variety of off-the-shelf software products including TEST Point, Microsoft Excel 8 for Windows, and DasyLab. For users writing their own programs, instruNet includes drivers callable from any 32 bit C compiler, and Visual Basic (v4.0 or greater). The driver includes a main routine, called "iNet( )", that reads or writes any of the options or channels on the system. Optional drivers are also available for LabVIEW software.

InstruNet World Plus Software(for Windows XP/VISTA/7) InstruNet World Plus Software is an option that adds valuable features to the standard instruNet World software which is included with instruNet hardware. It enables one to digitise, plot, control, analyse, and save to disk A/D, D/A, and digital I/O data from InstruNet hardware. Additionally, it enables one to define their own instrument front panel with buttons, popup menus, edit fields, dynamic text, text editor regions, and waveform graphs. InstruNet World Plus is programmed with a simple script language that can define tasks such as control loops. For example, one can type "Dac1 = OnOff (Ain1, 3)" to define D/A #1 as a function of A/D #1.

Specifications
Analogue Inputs Number: 16 single-ended/8 differential
Resolution: 14-bit
System Throughput: 166K samples/sec
A/D Conversion Time: 4 µs min
Signal To Noise Ratio: 78 dB
Linearity: Differential ±1.5 LSB; Integral ±2 LSB
Input Overvoltage Protection: ±15 V
Input Impedance: >22 MΩ, 3pf
Common Mode Voltage: ±5 V min (CMR ±80 dB)
Gain and Offset Drift: ±5 ppm/°C of 5 V FSR; offset self calibrated to 0 Thermistor Accuracy/Ranges All OMEGA™ 44xxx series thermistors supported. (Contact factory for other thermistors.) One user supplied shunt resistor per thermistor channel is required.

Range	Shunt	Accuracy
-80 to 40°C	47KΩ	±0.2°C
0 to 70°C	4.7KΩ	±0.1°C
0 to 200°C	200Ω	±0.4°C

Analogue Outputs Number: 8
Resolution: 8 bit
Output Range: ±5 V @ 5 mA for iNET-100/100B, ±5 V @15 mA for iNET-100HC
Output Protection: Short-to-ground continuous
Output Settling Time: 4µs (to ±1/2 LSB, ±5 V step)
Analogue Output Accuracy: ±0.4%
Digital Coupling: ±20 mV
Gain and Offset Drift: ±10 ppm/°C of 5 V FSR; and ±5 µV/°C offset drift
Digital I/O Number: 8 non-latching inputs and 8 latching outputs at 8 bi-directional screw terminals
Input Levels:
VIH = 3.2 V min to 12 V max;
VIL = 1.0 V max to -12 V min
IIH = -200 µA, Vi = 3.2 V;
IIL = -0.5 mA max.
Output Levels:
VOH = 2 V min to 5 V max;
IOH = -0.5 mA max.
IOL = 500 mA max, VO=1.7 V;
IOL = 50 mA max, VO = 0.7 V

For additional information on InstruNet World Plus software see the "Related Links" section below.

For user manuals and application notes visit the instrunet web site.

Place Order(Specify Model Number)

Part Number/ Desc.

Qty

Description

External Boxes

INET-100

£1,254.11

Availability: 2 weeks

instruNet external A/D box with screw terminals

INET-100B

£1,303.00

Availability: 2 weeks

instruNet external A/D box with screw terminal and BNC connections

INET-100HC

£1,369.32

Availability: 2 weeks

Same as INET-100 with 15 mA excitation current

Controller Cards

INET-240

£432.38

Availability: 2 weeks

USB 2.0 controller for Windows XP/VISTA/7 computers (32 or 64 bit). Requires INET-312-8 power supply

INET-200

£680.93

Availability: 5 weeks

PCI Bus controller card for Windows 95/98/NT/2000/XP computers

INET-230

£648.04

Availability: 5 weeks

PC-Card controller, type II (PCMCIA) (requires iNET-312-8 power supply)

Power Supplies and Accessories

iNET-iWPLUS

£302.46

Availability: 2 weeks

instruNet World Plus Software. See the Related Links section below for addtional details on instruNet World Plus software.

INET-300

£77.37

Availability: 2 weeks

Power adapter

INET-330

£437.31

Availability: 7 weeks

Optical isolator

INET-312-8EU

£187.91

Availability: In Stock

Power supply, 230V to 5V/2A & ±12V/0.8A. Includes iNET-300 power adapter cable.

INET-34W3F

£30.73

Availability: 7 weeks

1 metre ribbon cable

INET-340

£100.66

Availability: 7 weeks

DIN rail mounting brackets for one INET-100

INET-380

£205.28

Availability: 3 weeks

LabVIEW drivers for Mac and Windows

Precision Resistors

OMX-R20

£4.21

Availability: 8 weeks

±0.1%, 20Ω resistor

OMX-R100

£1.38

Availability: 2 weeks

±0.1%, 100Ω resistor

OMX-R250

£2.64

Availability: 2 weeks

±1%, 250Ω resistor

RES-250

£14.81

Availability: 2 weeks

±0.1%, 250Ω resistor

OMX-R1K

£36.53

Availability: 2 weeks

±0.025%, 1kΩ resistor

† All amounts shown in EUR, GBP, or USD
Note: The iNET-2xx controllers include a complete user’s manual, instruNet World data acquisition software, driver software and network terminator. The iNET-100/100B includes a 3m connecting cable.
Ordering Example: (1) INET-100 instruNet external A/D box with screw terminals, £1,254.11 plus (1) INET-240 USB controller, £432.38 plus (1) INET-312-8EU Power supply with iNET-300 power adapter cable, £187.91, £1,254.11 + 432.38 + 187.91 = £1,874.40