MODEL 1191
DOPPLER SENSOR

SUPER SMALL DOPPLER SENSOR

Super Small, Aseismic,and high-temperature-tolerant Sensor
Directly mounted on an engine of an automobile
For “actual measurement
while driving” that never before be possible

Features
The MODEL 1191 is a Super Small Doppler Sensor, which maintains its performance quality although thesensor is microminiaturized than ever before.
This sensor has aseismic design and internal cooling system which are available for “accrual measurement
while driving” of velocity, wow-flutter, and slip rate, by mounting it on an engine of an automobile, that neverbefore be possible.
And the signal processor MODEL 2022 is common to other ACT Doppler Sensor. Therefore it is available forevery measurement just by replacing a sensor.
This unprecedented small size sensor is useful for more various measurement.

Specifications
Signal Processor MODEL 2022
<Velocity measurement section> (Both channels)

Doppler Sensor MODEL 1191
Measurement
systemLaser Doppler system,
back-scattering differential type

MODEL 1191
Super small
L=40mmMeasurement range
7.5m/min to 6000m/min (0.13 100m/sec)

Accuracy

WithinPower supplySupplied from MODEL 2091

Focus distance± ㎜

Optimal position at 40 4～±0.2%・・ ・Laser output

Class3B 20mWMAX CW Laser Diode 690nm

Beam spot

Approx: 1mm wide by 3mm oval

Dimensions,
Weight28(W)x18(H)x60(D)mm,
less than 0.1kg

Power Supply Unit MODEL 1190PSUnit（MODEL 2091）

×Measurement
range
Display

Accuracy
Velocity output(F/V output)

Averagevelocity output
D/A output（）

4.3m/min to 3500m/min Using MODEL 1111
7.5m/min to 6000m/min Using MODEL 1191 or 1121
Digital indication in 5 decimal digitsUnitm/min, m/sec
Cycle
Approx, 0.2sec, 1sec
Averaging
2 to 20 times moving average
Depends on Doppler Sensor
Voltage0 to 10V
Full scale adjustable
Voltage accuracy
Within 3 at full scale
Low-pass filter
5Hz to 5kHz selectable
Impedance
1k12bits D/A output
Voltage0 to 10V
Full scale adjustable
Voltage accuracy
Within 1 at full scale
Sampling rate
50ms, 500ms
Averaging
2 to 99 times moving average

±％

Ω±％

×170(W) 50(H) 140(D)mm, Approx, 0.8kg

Others<Wow & Flutter measurement section> (Both channels)
Internal cooling system by using compressed air(Operable up to 100 degree temperature)

Measurement range

Aseismic design available for direct-mounting on an engine.
(more than at 200Hz, removes vibrations by using vibrationremoval rubber)

Range
Indication
AccuracyFrequency band

MODEL 2022 General Specifications
Power supply
Allowable power fluctuation
Electric shock protection
Allowable altitude
Pollution degree
Set category
Operating temperature range
Storage temperature range

Dimensions and weights－AC100 240V, 50/60Hz, 200VAmax
10%Class I
2000m max.
Degree 2Category II
0 to 40 , without condensation
10 to 60 , without condensation
426(W)x148(H)x400(D)mm,Approx, 11kg±－℃℃

Low-pass filter
Wow-Flutter output(W&F output)％

0.15 to 10rms(referred to a band below Fd/1000(Hz))(0.001% to 10% when FFT is employed)
Five ranges of 0.1 0.3 1 3 and 10%
rms, p-p
Within ± 5% of full scale of each range
0.5Hz to 5kHz(The low-pass filter attenuates frequencies higher thanthe upper-limit frequency.)
Same as F/V output
Voltage
1 V per full scale of each range
Accuracy
Within ±5% of full scale
Outputimpedance: 1k， ，，，ΩVelocity operation: Calculates and displays the difference and ratio ofaverage velocity.
Wow-flutter operation: Calculates and displays the sum and difference of
wow-flutter in real time.
Calculation output: Outputs the result of velocity and wow-flutter
calculation in real time. (Delta VELO output and MATH output)