Hot-Wire & Film Anemometry System AN-1005
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AN-1005 Hot-Wire Anemometry System

The AN-1005 is a portable compact Thermal Anemometry system (Hot-Wire Anemometer and Hot-Film anemometer), based on the AN-1003 Hot Wire Anemometry system channels. The Hot-Wire Anemometer channels Can work in CTA (Constant Temperature Anemometer) mode as well as CCA (Constant Current Anemometer) mode (with Option 11). The system has a built-in microprocessor  with Parallel communication and data acquisition capabilities.

The mainframe use a bright LCD display to display 4 channels simultaneously, using a 5 digit Voltmeter.

A friendly built-in menu guides the user through the operating procedure. All analog signals may be measured on external BNC’s. However, a high accuracy data acquisition system is built inside the mainframe, for high - speed  sampling at up to 500 Khz.@16 bit resolution (1 MHz. @ 16 bit optional). The data acquisition is done directly to any bi-directional parallel port, eliminating the need for an expensive A/D card.

The AN-1005 is an ideal solution for most Fluid Dynamics measurements and Aeronautics Measurement applications. Based on a proven Thermal Anemometry Technique and Cold-Wire Anemometry, the system can measure the Flow (Air or Liquid Velocity and Turbulence) and Temperature Fluctuations in real-time, saving data to disk or displaying and analyzing data .

It's built-in optical isolation enables the user to get clean data, without any spikes, bursts or other interferences common to Anemometry system with a standard PC data acquisition cards. The problem of Ground Loops, which cause oscillations and calibration problems is also solved due to the special architecture and the built-in data acquisition system.

Smart triggering and clocking modes enable the user to do data reduction as well as synchronizing external events to the acquisition and analysis / display process. This feature is ideal for researchers and experimentalist doing fluid dynamics research with machinery, propellers, bursts, blow out wind tunnels, Valves, Actuators, Flaps, Stacks etc.

The AN-1005 Anemometry system is an advanced Hot-Wire and Hot-Film Anemometry system based on today's technology. The built-in software, as well as the digital hardware can be updated using Flash technology, and user may download new update files to the AN-1005, for enhancing it with new features.

Anemometer

FEATURES:

 * NEW USB2 INTERFACE!

* Portable system - up to 4 channels


* Microprocessor controlled

* Built-in data acquisition system

* Low cost system- less than 18K$
  With all 4 channels

* Ideal for research and education

* Use the high performance   AN-1003 channels

* Digital data output - directly to  a PC parallel port

* Easy operation - friendly interface

* Optional Thermocouple + %RH sensor   For on-line compensation

* Easy, step by step calibration software for all probe types,
   for Liquid or Gas, Velocity or Temperature


Technical Data

  Channel's Specifications:

   C.T.A Bridge: 

   Non-linear,Constant-Temperature type:
   Bridge ratio.........................1:10 and 1:1
   High power mode.................1:20 and 1:2
   Sensor resistance range:
   1:1 Bridge...........................0.5-99.9Ohm
   1:10 Bridge.........................1.0-9.99Ohm
   Cable resistance compensation.0.2-1.2Ohm
   Maximum closed loop bandwidth:
   1:1 Bridge.............................DC-120KHz
   1:10 Bridge............................DC-100KHz
   With option 04.......................DC-500KHz
   Maximum probe current:
   x1 Drive ..............................300 mA max
   x2 Drive ..............................600 mA max
   Equivalent input noise:
   1:1 Bridge..............................1.6 nV/SQRT
  1:10 Bridge...............................2.2nV/SQRT
  With option 01...............400 Picovolts/SQRT
  Typical hum induced in input.......0.03µVrms 
  Typical output noise: 
  5µm Tungsten probe:
  OHR=1.5, U=0, B.W.=10 KHZ.....135 µVrms 
  The same with option 01.............60 µVrms
  Stability:typical input drift:
  1:1 Bridge................................0.5µV/°C 
  1:10 Bridge..............................0.3 µV/°C
  Less than 0.1µV/°C with option 01.
  Probe cable.............5m of RG174 or RG58A
  Output......Top of bridge or amplifier output
 

  C.C.A Bridge
  (Constant Current Anemometer,opt.11):
  Fixed currents.................1,2,5,10,20 mA
 and any combination of those current levels
  Variable current source..............0.3-30 mA
  Selected current is displayed on Test-module

  Power Supply:
 Output Voltages..........................±15V,±5V
  Maximum current(@±15V)..................±2.5A
  Hum & Noise.............................<100µVrms 

     Signal Conditioner:

   Output voltage range.................±12V
   Amplifier gain.............................1-20
    presettable to any gain in range
(may be ordered with 1-50 or 1-100 ranges)
    Gain accuracy............................0.5%
    DC offset.................................0-10V
    Output impedance...................100Ohm
   50Ohms available per request
    Input impedance....................10K Ohm 
    Typical input white noise..........30nv/SQRT
    Frequency range..................DC-100KHz
    Typical equivalent input drift...160µV/°C 

    Low-Pass Filter:

    Triple pole Butterworth Type. 
    12 Cut-off Frequencies in 2 bands:
    Lower band..300Hz-5KHz(6 frequencies) 
    Upper band...7KHz-16KHz(6 frequencies)
    (Other frequency bands can be ordered)

   Test Module

    Pulse Generator:

    Frequency......................500Hz-20KHz
    Duty Cycle.......0.1% to 50% continuous
    Rise Time................................50nSec

     DC Reference:

    Output Voltages..........................0.1V
   Accuracy......................100ppm/°C,0.1%

     Data acquisition:
    Resolution..............................16 Bits.
    Sampling Rate (total)..............800 KHz.
    Sampling Rate - Pulse Response..1 MHz.
    Sampling Method....Quasi-Simultaneous.
    Optional True-Simultaneous Sampling    available .

    PARALLEL PORT INTERFACE:
    The unit interfaces to EPP parallel port
   (Bi-directional parallel port found in    any PC compatible Desktop or Laptop    computer).

    Data transfer rate: up to 700 KBps. 

    USB2 INTERFACE:
   A high speed USB2 interface enables    the AN-1005 To connect to any    portable or desktop computer with    Ultra-High throughput rate and fast    response time.
   The USB2 interface may be used with    the same software or the Lab-View    driver.

   

* All specifications might change without a prior notice.

Sequential sampling, Quasi-Simultaneous and True Simultaneous sampling:

Quasi-simultaneous sampling

SOFTWARE:

Real Time display - Turbulence - on all channels
Real Time Scope

Pulse / Square wave response
Pulse Response

Noise level- Less than 1mV ptp.

Spectrum (FFT)
FFT plot

Simple calibration of probes:
Cal_Setup

Calibration curve is exported via ASCII file:Calibration curve

Program support for USB2 or Parallel port interface:USB2 Configuration

Software and new Firmware updates done by user:Update

High Speed USB2 Interface allows the user to connect the AN-1005 to any Desktop or Laptop with USB2 interface
for faster data acquisition and control of the Anemometer.
The Analog ground of the probes circuit is optically isolated from the PC to prevent any transfer of noise to your sensitive analog signals.

USB2


Download Datasheet Download PDF file



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