Hot-Wire & Film Anemometry System AN-1003 Piezo Driver / Amplifier And Modulator A-304
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Advantages of the AN-1003
Technical Specification

The AN-1003 Hot-Wire Anemometer can measure fluid velocities from 0 and up to supersonic speeds. In addition to these inherent qualities of the basic AN-1003 system, there are 14 extra options which can be added to any number of channels. These expand the capabilities of the system, allowing it to make professional-standard measurements in different kinds of fluids.

Another advantage of the AN-1003 is its modularity: channels can be removed or interchanged without disturbing other channels already calibrated for different experiments.

The AN-1003 is being used today at a large number of leading research institutes and universities throughout the world, where, for a number of years, it has proved its value as a reliable and accurate instrument, and has become a valuable research tool for scientists and engineers. Part of the AN-1003's success is due to its user-oriented design, making the system easy and straightforward to use by inexperienced students and professional researchers alike. We hope that you become part of this expanding group of satisfied AN-1003 users.

Refer to the
Technical Specification to find out about the outstanding capabilities and characteristics of the AN-1003. As a result of technological advances in design and production, A.A. Lab Systems can now offer you a complete AN-1003 anemometry system at a substantially lower price than in the past, making this highly reliable and accurate system highly affordable as well.

Call or e-mail for any information you need that is not covered in this Web Site - our professional staff will be happy to answer any technical questions you may have.

AN-1003 Hot-Wire Anemometer
Technical Specification

Channel Specifications

  Non Linear, Constant Temperature type
Bridge Ratios 1:10 and 1:1
High Power mode 1:20 and 1:2
  Sensor Resistance Range
1:1 Bridge 0.5-99.9 Ohm
1:10 Bridge 0.5-9.99 Ohm
Probe Lead Resistance Compensation 0.2-1.2 Ohm
   Maximum Closed Loop Bandwidth
1:1 Bridge DC-120 kHz
1:10 Bridge DC-100 kHz
With option 04 DC-500 kHz
   Probe current
x1 drive 300 mA max
x2 drive 600 mA max
   Equivalent input noise
1:1 Bridge 1.6 nV/
1:10 Bridge 2.2 nV/
With option 01 400 pV/
Typical Hum induced in input 0.03 µ Vrms
All noise parameters are correct for one or all channels working simultaneously.
   Typical Output noise
5 µm Tungsten probe, OHR=1.5, U=0, B.W.=10 kHz 135 µ Vrms
The same, with option 01 60 µ Vrms
   Stability - Typical Input Drift
1:1 Bridge 0.5 µV/°C
1:10 Bridge 0.3 µV/°C
With option 01 (all bridge ratios ) Less than 0.1 µV/°C
Probe cable 5 m of RG174 or RG58A
Output Top of Bridge or amplifier output
CCA BRIDGE (Constant Current Anemometer, OPTION 11)
Fixed currents 1,2,5,10,20 mA
Variable current source 0.3- 30 mA
Selected current is displayed on test-Module
Output Voltages Range ±12V
Amplifier Gain (presetable to any gain in range) 1-20(can be ordered with 1-50 or 1-1000 ranges)
Gain accuracy ±0.5 %
DC Offset 0-10 V
Output Impedance 100 Ohm
Input Impedance 10 kOhm
Typical Input White Noise 30 nV
Frequency Range DC-100 kHz
Typical Equivalent Input Drift (Gain 1) 160 µV/°C
   Triple-pole Butterworth Filter, with 12 Cut-off frequencies in 2 bands
Lower band 300 Hz - 5 kHz (6 frequencies)
Upper band 7 Hz - 16 kHz (6 frequencies)
Other frequency bands can be ordered.  

Mainframe Specifications

Output Voltages ±15 V,±5 V
Maximum current (@ ±15 V) 4 A ( 7A with option 10 )
Hum and Noise 100 µ Vrms
Can drive 10 channels @ 1:10 bridge ratio,
or 5 channels @ 1:1 bridge ratio.
Option 10 can drive all ten channels in 1:1 or 1:10 modes,simultaneously.
   Pulse Generator
Frequency Voltage 2 kHz
Duty Cycle 50% or 0.2%
Rise Time 50 nSec
Output Voltages 0.1 V
Accuracy 100 ppm/°C, 0.1 %
Function selects Automatic input/output connection according to selected    function.
Channel Selector Digitally controlled, gold plated contacts.

In normal operation, all channels except one are disconnected from the Test Module, to prevent additional noise inputs from external devices or cross-talking.

All noise parameters are correct for one or all channels working simultaneously.

The Hot-Wire Anemometer works with almost any Hot-Wire sensor and Hot-Film sensor made by any manufacturer.
Unit is CE rated (satety & noise & immunity).


The typical frequency response graph
was plotted according to data taken  
from AN-1003 Hot-Wire Anemometer
witjh options 01 & 04. The amplitude
is realative to the 1 kHz amplitude.

  1 mV P.T.P. @
200 kHz Bandwidth




Download Datasheet Download PDF file

For more information about our Hot-Wire Anemometry products , please click here.

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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


Copyright 2000, A.A.Lab Systems Ltd.

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A.A. Lab-Systems
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
© Copyright 2006, A.A.Lab Systems Ltd.