Sensors - Willow Technologies

WILLOW
Technologies
Sensors
Ultrasonic MA Series
These sensors transmit and receive ultrasonic waves, having
applications in distance measurement (vehicle reversing aids etc),
object detecting, security alarms and remote control
Features
1. Compact and lightweight design
2. High sensitivity and sound pressure levels
3. Low power consumption
4. High reliability
5. Open, closed waterproof and high frequency options
Types
1. Open Structure
Using the combined vibration mode of a bimorph
transducer and radial core, this type exhibits high
sensitivity and high sound pressure levels.
Applications : Automatic doors, Burglar Alarms, Remote
control, Range finders.
1- Open Structure Types
Order Code
Construction
Type
Norm. Freq.
Sensitivity
Sound Pressure
Directivity
Capacitance
Op. Temp. Range
Detect. Range
Resolution
Dimension
Weight
Allowable Input
(Vp-p)
(Rect. wave)
(kHz)
(dB)
(dB)
(deg)
(pF)
(°C)
(m)
(mm)
(mm)
(g)
V
MA4OS4R/S* MA40B8R/S*
MA4OB7
MA40S5
Open structure type
Sep. Receiver & Transmitter
Combined type
40
-63±3
-63±3
-61
-62
120±3
120±3
-116
-111
100
50
40
70
2550±20%
2000±20%
2000±20%
2550±20%
-30 +85
0.2 - 4
0.2 - 6
0.2 - 4
0.2 - 4
9
9
9
9
9.9 Ø x7.1h
16 Ø x 12h
16 Ø x 12h
9.9Ø x 7.1h
0.7
2
2
0-7
20 (40kHz)
20 (40kHz)
100 (40kHz)
20 (40kHz)
Pulse width
Continuous
Continuous
0.4ms
Continuous
signal
signal
Interval 100ms
signal
* Specify R=Receiver or S=Sender
Directivity
MA40B8R
MA40S4R
MA40B8S
MA40S4S
MA40B7
MA40S5
2. Water Proof
This type has excellent resistance to harsh
environmental conditions and can be used outdoors.
Applications : Back sonar of vehicles, Parking meters
Water level meters.
3. High Frequency
Using longitudinal vibration and acoustic matching layer, this
type exhibits high sensitivity in air.
Short wavelengths facilitate sharp directivity for high
precision measurements.
Applications: Approach switches, distance measurements, liquid
level meters, gas flow meters.
Dimensions
MA40S5
Tel: +44 (0)1342 835234 Fax: +44 (0)1342 834306 e-mail to: [email protected] [email protected]
WILLOW
Technologies
Sensors
2- Water Proof Types
Order Code
Construction
Type
Normal Frequency
Overall Sensitivity
Sensitivity
Sound Pressure
Directivity
Capacitance
Op. Temp. Range
Detectable Range
Resolution
Dimension
Weight
Allowable Input
(Vp-p)
(Rectangular wave)
MA40E7R/S*
Sep. Rec.& Trans.
(kHz)
(dB)
(dB)
(dB)
(deg)
(pF)
(°C)
(m)
(mm)
(mm)
(g)
V
-74min.
106 min.
100
2200±20%
0.2 - 3
9
18 Ø x 12h
4.5
85 (40kHz)
Pulse width
0.4ms
Interval 100ms
* Specify R=Receiver or S=Sender
Dimensions
MA40E8-2
MA40E6-7
Water proof type
Combined use
Miniature
40
-85min
106min
75
2800
-30 +85
0.2-1.5
9
14Ø x 8h
160(40KHz)
Pulse width
0.8ms
Interval 60ms
-82 min.
108
75
2200±20%
0.2 - 2
9
18 Ø x 12h
4.5
140
(40kHz Sine wave)
Pulse width 0.4ms
Interval
100ms
MA40E9-1
Asymetric
Beam
-85
106
100Wx50H
4500±20%
0.2 - 6
8
18Ø x 10h
Directivity
MA40E7S ----
MA40E8-2
MA40E7R -----
MA40E9-1
MA40E6-7
MA40E9-1
All dimensions in mm
Tel: +44 (0)1342 835234 Fax: +44 (0)1342 834306 e-mail to: [email protected] [email protected]
WILLOW
Technologies
Sensors
3- High Frequency type
Order Code
Construction
Type
Normal Frequency
Overall Sensitivity
Sensitivity
Sound Pressure
Directivity
Op. Temp. Range
Detectable Range
Resolution
Dimension
Weight
Allowable Input
(Vp-p)
(Rectangular wave)
(kHz)
(dB)
(dB)
(dB)
(deg)
(°C)
(m)
(mm)
(mm)
(g)
V
MA80A1
MA200A1
MA400A1
High frequency type
Sep. Rec. & Trans.
75±5
200±10
400±20
-47 min.
-54 min.
-74dB min.
0dB=18 Vp - p 0dB=18 Vp - p 0dB=18 Vp - p
( at 50cm )
( at 20cm )
( at 10cm )
7
-10 to +60
-30 to +60
0.5 - 5
0.2 - 1
0.06 - 0.3
4
2
1
47 Ø X24.5h
19 Ø X 11h
11 Ø X 10.5h
93
6
2
120 (75kHz)
120 (200kHz) 120 (400kHz)
Pulse width
Pulse width
Pulse width
600 µ s
250 µ s
125 µ s
Interval 50ms
Interval 20ms
Interval 10ms
Directivity
MA80/200/400A1
* Specify R=Receiver or S=Sender
Dimensions
4- Construction Diagrams
1) Open Construction
2) Water Proof Type
3) High Frequency Type
Tel: +44 (0)1342 835234 Fax: +44 (0)1342 834306 e-mail to: [email protected] [email protected]