MODEL 2532A／1521N
Non-Contact Measurement System

Laser Doppler Velocity Meter for Vehicle Speed Measurement

This MODEL 2532A is a Non-Contact Laser Doppler type velocity meter, which is a specific instrument to
the measurement of ground speed and travel distance of vehicle or railway train. This system makes theaccurate measurement in a normal test of driving, acceleration and deceleration even if a measured track orroad is slippy or a wheel spins or bald. Furthermore, this accurate measurement is also available from a stoppoint (0 velocity) in rain, snow, or bumpy road.

【Test of Acceleration and Deceleration】●Start acceleration test（SS400，SS1000）●Over taking accelaration test（ACCEL Test）●Brake test （MFDD Test）●ABS brake test （ABS Test）●Repeat measurement(Automatic measurement as the specified times)【Normal travelling performance test】●Display on velocity grajectory and travel
distance, and FFT analysis*The application software is provided as standard

The Example of Application Software【Brake test: MFDD automatic measurement】

Features
1、 Uses non-contact measurement system which makes high accurate measurement without any slip,idling, and abrasion of wheels.
2、 With the fluctuation range of measurement distance within ± 80mm, which makes the accurate
measurement even if in rain, snow, ice, or bumpy track or road.
3、 Makes accurate measurement of velocity and travel distance from a stop point.
4、 Available for efficient measurement and obtaining data of a test with the provided application software.
5、 The accuracy of measurement is unaffected by measurement place or environment change.
6、 Has the output function of velocity or pulse of travel distance for comparing a conventional method.
7、 Also used as a high-accuracy fuel economy indicator with an existing flowmeter by using the pulse input
terminal from a fuel flowmeter.

Basic Specifications: MODEL 2532A/MODEL 1521N【The Doppler Sensor: MODEL 1521N (500mm)】
Velocity range-250～+250km/h or -5～+500km/h (at SF=0.8)
Distance (focus)
500mm±80mm or more, acceptable distance variation: 200mm (actual)
Accuracy
Within ±0.1%, depending on conditions
Repeatability: Within ±0.05%
Laser

Semiconductor Wave length: 780nm

Power: 40mW at the max. (class 3B)

Display【The Signal Processor: MODEL 2532A】
Velocity range
Update rate
Distance range-250～+250km/h or -5～+500km/h, in 7 decimal digits/ The min.resolution: 0.001km/h
2 ms
0.001 ～ 999999.999m, with the displaying resolution of 1mm

Velocity voltage
output16-bit D/A output
Voltage: 0±4V, with selectable full scale
A and B, 90 degrees Phase difference output

Pitch output

Interval: 0.1～1000.0mm (the resolution of 0.1mm)

External I/O terminal

Options

Accuracy: Within ±0.5%

External monitor output,

External switch input,

Format: Open collector

Fuel flowmeter input (optional)

External monitor

For displaying the measurement result of velocity, travel distance, period, and calcurations

External switch

For controlling the operations of start and stop

Fuel flowmeter
input

0-12V logical input or contact input (open collector/ pulse output)
Frequency range: 0 to 10kHz, Setting unit: mL/p，g/pInterfaceUSBPower

DC10V～30V, or depending on the dedicated AC adapter

Demensions andDoppler sensor: 90(W)×40(H)×140(D), excluding projections Approx. 0.6 kg
Signal processor: 160(W)×60(H)×101(D), excluding projections Approx. 0.6 kgweights【System Configuration】【Exampleof Setting】

アクト電子株式会社〒211-0051

ACT ELECTRONICS CORPORATION

4-7-16, Miyauchi, Nakahara-ku, Kawasaki

http://www.actele.co.jp

TEL:044-589-8180(代)

FAX:044-589-8181

NOTES: Specifications, design and descriptions are subject to change without notice for further improvement.