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]