The PMC-3000 is a measurement system, based on an analog data acquisition unit which is
external to the computer and contained in a shielded box.

Each analog unit includes:
 A highly accurate and stable excitation for varying DC voltage levels for use in bridge type
transducers.
 A low-cost solution for Force/Task balance.
 Menu driven PC software, LABVIEW interface.
 Connect to any Force/Pressure/Low-level voltage sensor.
 Built-in Signal conditioner.
 Up to 12 channels, Simultaneous sampling.
 Three high-gain (up to 1000) instrumentation amplifiers.
 A low-pass filter with a hardware selectable cut-off frequency, designed to cancel noise in
the signal being sampled.
 Three fast A/D converters with simultaneous sample-and-hold providing a sampling rate of
40 kHz per channel.
 The acquisition unit connects to a PC-compatible computer via a digital interface card.

The 3-channel isolated data acquisition system connects with up to three analog signal sources
which are amplified, conditioned and sampled.

  Three differential instrumentation amplifier inputs
  High accuracy variable gain: 10 to 1000
  Full optical isolation to cancel noise and prevent CMV shock
  Built-in symmetrical excitation unit, providing a high- stability DC drive for up to 24 V @
200 mA.
  Integrated anti-aliasing low-pass filters
 Software-programmable alarm voltage levels for fast, real-time response
 14 digital I/O channels: 8 outputs and 6 inputs for controlling external device
(relays, D/A units, lamps, TTL level signals)
 Operation software included, with source code demos.
 Offset adjustment (zero suppression) for increased dynamic range
 12 bit A/D resolution
 Full bridge - 4 wire bridge connections

  Strain, force & pressure measurement.
  General purpose low-level DC measurement.
  Industrial process control.
  Semiconductor temperature sensors.
  Watchdog / alarm level detector.
  Computerized weighing system.

The PMC-3000 menu-driven "GAGE" software is used for data acquisition and graphic display of the measured values. You can select any of the real-time display modes:
  Bar display,
  Time Window scope,
  Scrolling scope, or
  Fast Courier Transform (FFT) of the input signals.

This software has many powerful functions, used for the analysis of data. It can save the data and export the sampled data files to most of the Spread sheet programs available to date. With this software, you can operate and calibrate any transducer - much easier than before.

Sampled measurements can be observed in real-time on user-defined scales. The displayed graph
can be frozen at any time for further observation and analysis.

The digital interface card provides eight TTL digital I/O channels to simultaneous Input/Output signals from/to external instruments (relays, switches, lights, D/A units, buzzers, etc.). This Interface card also includes six digital input channels which can read the state of external events.

The external cards are optically isolated from the computer by industry standard opto-couplers capable of isolating voltages of up to 1000V. Optical isolation protects the computer from a sensor shorted to high voltage, and insulates the system from noise generated by the computer. The measurement system is floating in respect to the ground.

AMPLIFIER
  Input Channels: 3 to 12, differential and balanced to ground
  Gain Selection: Variable potentiometer adjustment (on front panel) with fine tuning
  Gain Temperature Coefficient: 50 ppm/deg.C
  Input Dynamic Range:
x 20 gain - ±150 mV
x 1000 gain - ±3 mV
 Input Impedance:
- Differential resistance 1 giga-Ohm
- Differential capacitance 10 pico-Farad
  CMRR:
G=20 > 90 dB, DC to 60 Hz
G=100 > 100 dB, DC to 60 Hz
  Nonlinearity: 0.001% max.
  Gain Bandwidth: DC to 10 kHz
  Noise: 4 nV/root(Hz) @ 1 kHz, ±0.5 LSB at A/D input
  Settling Time: 30 uSec @ G=20, 75 uSec @ G=1000
  DC Offset: Continuously Variable adjustment with fine tuning
  Maximum Offset Range: ±20% of excitation
  Temperature Coefficient: 20 microVolt/deg.C
  Power: +5V, ±15V ext. power supply
  Temperature Range:
- Operating: 0 to +70 deg.C
- Storage: -10 to +100 deg.C

EXCITATION
  Voltage Range: 0 to 24 V adjustable, symmetrical about ground
  Current: 200 mA max.
  Protection: Short-circuit protected
  Temperature Coefficient: 150 ppm/deg.C

A/D UNIT
The A/D Unit is optically isolated from the computer.
 Full Scale Input: ±3 Volts
  Resolution: 12 Bits
  Simultaneous Sampling Rate:
40 kHz per channel (without optical isolation)
10 kHz per channel (isolated)
  SNR: 72 dB

ALARM UNIT
The Alarm Unit has 16 preprogrammed hardware tables which can be selected during measurement. These hardware tables can be reprogrammed using the included software (EPROM programmer not included). Customized tables can be ordered and programmed prior to delivery.
  Level Resolution: 2.9 mV
  Response Time: 200 nSec (from A/D readout)
  Digital Output: TTL compatible (0-5V)
  Maximum Output Current: 50 mA (sink)

The PMC-3000 can be ordered with 3,6,9, or 12 input channels. The system includes a Data acquisition & Amplifier Card, a PC compatible interface card, a floating power supply and all the cabling needed.
The system runs on 110/220V, 50/60 Hz.
Alarm table may be standard (S) or customized for your requirements (C).

EXAMPLE:

PMC - 3000 - 6 - S

Where:

6 = No. of Channels

S = Alarm Table, standard

For more information about our Amplifiers and Signal Conditioner products , please click here.

For more information please contact us at:

Head Office: 33 Hayetzira St., Ramat-Gan 52521, ISRAEL. Tel: 972-3-5756327, Fax: 972-3-5756326
USA office: 9 Blossom drive, Kennett Square, PA19348.  Tel: (302)478-2881 Fax: (610)444-5544

Please note: New USA address and new fax number.
E-mail: info@lab-systems.com

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