Ultrasonic Sensors Ultrasonic MA Series 1- Open Structure Types 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. Order Code C ons truc tion Type N orm. F req. Sensitivity Sound Pressure Directivity Capacitance O p. Temp. R a nge Detect. Range Resolution Dimension Weight Allowable Input ( V p -p ) (Rect. wave) MA4OS4R/S* MA40B8R/S* MA4OB7 MA40S5 O pen s truc ture type S e p. R e c e ive r & Tra ns mitter C ombined type ( kH z ) 40 (dB) -63±3 -63±3 -61 -62 (dB) 120±3 120±3 -116 -111 (deg) 100 50 40 70 (pF) 2550±20% 2000±20% 2000±20% 2550±20% ( °C ) -3 0 + 85 (m) 0.2 - 4 0.2 - 6 0.2 - 4 0.2 - 4 (mm) 9 9 9 9 9.9Ø x 7.1h (mm) 9.9 Ø x7.1h 16 Ø x 12h 16 Ø x 12h (g) 0.7 2 2 0-7 20 (40kHz) V 20 (40kHz) 20 (40kHz) 100 (40kHz ) P uls e 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 Page 1 of 3 Willow Technologies Ltd. + 44 (0) 1342 717102 Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, United Kingdom. + 44 (0) 1342 717014 [email protected] http://www.willow.co.uk W362013 2- Water Proof Types Order Code C ons truc tion Type Dimensions MA40E7R/S* S e p. R e c . & Tra ns . N orma l F requenc y O vera ll S e ns itivity Sensitivity Sound Pressure Directivity Capacitance O p. Temp. R a nge Detectable Range Resolution Dimension Weight Allowable Input ( V p-p) (Rectangular wave) ( kH z) ( dB ) (dB) (dB) (deg) (pF) ( °C ) (m) (mm) (mm) ( g) V MA40E8-2 MA40E6-7 Wa ter proof type C ombined us e Minia ture MA40E9-1 As ymetric Beam 40 -74min. 106 min. 100 2200±20% 0.2 - 3 9 18 Ø x 12h 4. 5 85 (40kHz) P uls e width 0.4ms Interval 100ms -82 min. 108 75 2200±20% -3 0 + 85 0.2-1.5 0.2 - 2 9 9 14Ø x 8h 18 Ø x 12h 4. 5 160(40KHz) 140 P uls e width ( 40k H z S ine wa ve ) 0.8ms Pulse width 0.4ms Interval 60ms Interval 100ms -85min 106min 75 2800 -85 106 100Wx50H 4500±20% 0.2 - 6 8 18Ø x 10h * Specify R=Receiver or S=Sender Directivity MA40E7S ---- MA40E8-2 MA40E7R ----- MA40E9-1 MA40E6-7 MA40E9-1 All dimensions in mm Page 2 of 3 Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, United Kingdom. + 44 (0) 1342 717102 + 44 (0) 1342 717014 [email protected] http://www.willow.co.uk W362013 3- High Frequency type O rder C ode C ons truc tion Type Normal Frequency Overall Sensitivity Sensitivity Sound Pressure Direc tivity Op. Temp. Range Detectable Range Resolution Dimension Weight Allowable Input ( V p-p) (Rectangular wave) (kHz) (dB) (dB) (dB) ( de g ) (°C) (m) (mm) (mm) (g) V MA8 0A1 MA2 00 A1 MA4 00 A1 H igh frequenc y type S e p. R e c . & Tra ns . 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) P uls e width P uls e width P uls e 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 Page 3 of 3 Willow Technologies Ltd. Unit 3 Borers Yard, Borers Arms Road, Copthorne, West Sussex, RH10 3LH, United Kingdom. + 44 (0) 1342 717102 + 44 (0) 1342 717014 [email protected] http://www.willow.co.uk W362013