AN-2000 COMPUTERIZED ANEMOMETRY SYSTEM
Up to 20 different options may be added to the basic instrument configuration. Designed for specific research requirements, these options dramatically enhance the standard instrument configuration.
Options allow you to hand-pick the system you really need on a channel-by-channel basis, without having to choose between "all-or-nothing". We recommend that you consult the factory about your application and the options required for that.
ULTRA LOW NOISE AMPLIFIER (Option 01):
Adapted from the bridge circuitry of the highly successful AN-1003 Anemometer, this high performance, low noise, bridge amplifier has two substantial features not found in any off the shelf amplifiers:
A very low noise voltage with a spectral density of 400 pico Volts per root of Hertz (pV/ ) compared to the 1500 to 2000 pV/ found in "Low Noise" commercial amplifiers
A very stable input with a very low offset voltage drift, as low as 0.1 µV/°C (micro Volt per degree Centigrade). resulting in an ultra low noise CTA anemometer, with almost zero drift. This option provides a precise and accurate Top of Bridge voltage and an excellent Signal-to-Noise ratio.
HIGH CURRENT POWER SUPPLY (Option 02):
A mainframe option: For operation of up to 8 probes in the high current mode (maximum of 600 mA per probe).
EXPANSION UNIT (Option 03):
A slave unit which increases the AN-2000 capacity by 8 channels.
Includes power supply and all necessary cables for connection to a master mainframe.
HIGH FREQUENCY COMPENSATION (Option 04):
Extends the frequency response of each channel to 500 kHz.
The frequency compensation option consists of both hardware and software that enable the user to adjust the sensor, to get the widest, flattest frequency response possible. This exhibits the response of the CTA bridge to a Sine Wave input into the bridge itself (after attenuation). This Sine Wave input simulates a change in the heating/ cooling of the sensor and its response will be relative to the low frequency response (1 kHz in our case). The response test can be repeated as often as required while the user adjusts the Cable Compensation circuit and the Damping control simultaneously.
Also available for cable length up to 15m.
CONSTANT CURRENT MODE (Option 05):
Provides CCA mode probe operation in addition to the standard CTA mode. Bridge current is 0.5-50mA.
The CCA bridge is usually used for rapidly varying temperature measurements. Unlike Thermistors or Thermocouples, which have a high heat capacity, large volume and slow response, the CCA circuit measures temperature fluctuations at frequencies of 2 kHz and higher, with accuracy better than 0.1°C. The sensor wires diameter may be 2 microns or even less. The Temperature to Voltage ratio of the CCA circuit is linear and temperatures of up to 800°C can be measured. The temperature of a CCA channel can be displayed or saved to a file in addition to the velocity information, allowing the user to make temperature compensation to the velocity measurements.
A/D CONVERTER (Option 08):
A 14 bit resolution A/D converter for each channel with maximum sampling rate of 93 kHz per channel (sampling rate can be changed by software). Data output: 15 bits, DMA interface (similar to DRV-11).
New high speed A2D's available: 160 KHz. per channel, 500 KHz. per channel.
DIGITAL LINEARIZATION (Option 09):
Provides data linearizer (output linear to velocity), installed in each channel, 16 bit resolution. Linearization is digital, with no added noise/offset/drift etc. Option 08 must be selected with this option.
Specialized firmware, custom designed, is incorporated into the AN-2000. It supports the hardware in each channel as well as software for calibration and measurement in the PC, enabling sampled signals to be converted into digital linearized data and subsequently transferred, in real-time to the PC. This feature allows the user to see the velocity and temperature fluctuations on the PCs screen. comprise correlations and spectrums, and store them on the hard disk in engineering units. This form of digital linearization, which is carried out at 70nSec, uses a high resolution lookup table which is formed digitally. The noise, drift and time consumption characteristic of analog linearizers and standard A/D cards is eradicated. These unique properties endow the AN-2000 linearizer with a level of accuracy and reliability not attained by any other method of calibration.
High Speed USB2 Interface (Option 10):
This option is a powerful, high speed USB2 interface working at 480 Mb ber second. The USB2 interface is capable of interfacing between the AN-2000 and any PC compatible computer running Windows XP. The interface provides control of all AN-2000 functions including high speed data acquisition. The interface can extend the distance between the AN-2000 and the host PC to a distance of up to 200m.
BATTERY OPERATION (Option 12):
For uninterrupted operation. Includes rechargeable battery with built-in charger. Can support system operation for more than two hours without mains current.
AN-FLOW SOFTWARE (Option 13):
A complete data acquisition, control & operation software. For WINDOWS XP.
SPD-500 DATA TRANSCEIVER UNIT (Option 14)
For transferring the DMA and display data to distances of 5-200m from the host computer.
The SPD-500 Data Transceiver consists of two separate units which can transmit and receive digital data at high speeds over a distance of 600 feet (200 m), using standard twisted-pair ribbon cable. These transceivers relay the data, and the graphic display generated by the AN-2000 to the remote PC.
Additional 1 MB RAM (Option 15):
This option is obsolete and not needed with the USB2 interface.
CAL-2000 DIGITAL AIR SPEED CALIBRATOR (Option 16):
For calibrating sensors in Air, at 1-70m/Sec. Stand alone instrument with operation software. Click CAL-2000 for more information.
ANALOG INPUT CHANNEL (Option 17)
For Acquiring external analog signals together with the velocity and temperature provided by other channels.
High Speed A/D CONVERTER (Option 18A or B)
For sampling rate of 160 kHz per channel (A) or 500 KHz. per channel (B) (simultaneous sampling).
ULTRA HIGH CURRENT POWER SUPPLY (Option 019)
For driving eight sensors at up to 0.7 Amp each. Including modification of bridge ratio to support high current.
The PC software of the AN-2000 is able to control Traverse systems of 6 axes and sample data to the hard disk, while moving the Traverse unit.
Traverse Control: ANFLOW software enables you to control up to six stepping motors simultaneously, move them from one position to another (up to 1000 positions) and sample a data file in each physical point (position). The measurement points (positions) may be defined as a six-dimensional grid or along a six-dimensional path that you define.