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| Ultrasonic Ceramic Sensors Ultrasonic Ceramic Sensors (Ultrasonic Ceramic Transducers) Type: U/H/S/Q Ultrasonic Ceramic Sensor consisting of a disc type/a bimorph type piezoelectric ceramic vibrator is a sensor for transmitting and receiving ultrasonic wave in the air. s Features q q q q q High output S.P.L.: 112 dB min. (Ex. EFRTUB40K5) High sensitivity: 45 dB min. (Ex. EFRRUB40K5) Excellent temperature and humidity durability Small in size Applicable to multi-function remote control system because of its wide bandwidth s Recommended Applications Ultrasonic wave transmitter and receiver for; q Proximity switch for burglar alarm system, parking meter and automatic door opener q Remote control equipment for such as air conditioner and garage door opener s Explanation of Part Numbers 1 2 3 4 5 6 7 8 9 10 11 E F R Design No. Nominal Product Code EFR Ultrasonic Ceramic Sensors R T Applications For reception use For transmission use U H Type Standard Type Compact Type Temperature Stable Type Enclosed Type Construction of Element B Bimorph Type Frequency 25K 40K 25 kHz 40 kHz S Q Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. EF72 Ultrasonic Ceramic Sensors s Ratings and Characteristics Type Part No. Item Nominal Frequency Sensitivity Sound Pressure Level Bandwidth Application Maximum Input Voltage Operating Temperature Range (Vrms) (uC) Type Part No. Item Nominal Frequency Sensitivity Sound Pressure Level Bandwidth Application Maximum Input Voltage Operating Temperature Range (Vrms) (uC) Type Part No. Item Nominal Frequency Sensitivity Sound Pressure Level Bandwidth Application Maximum Input Voltage Operating Temperature Range V 0 dB=1 V/Pa VV 0 dB=2x105 Pa Ask factory for technical specifications before purchase and/or use. Standard Type EFRRUB40K5 40.0 45 min. N 4.0 min. Receiver N EFRTUB40K5 40.0 N 112 min. 4.0 min. Transmitter 20 EFRRUB25K5 25.0 45 min. N 2.5 min. Receiver N 20 to 60 Compact Type EFRRHB40K5 40.0 47 min. N 4.0 min. Receiver N 20 to 60 Enclosed Type EFRRQB40K5 40.0 55 min. N 1.0 min. Receiver EFRTQB40K5 40.0 N 105 min. 1.0 min. Transmitter 20 20 to 60 EFRTHB40K5 40.0 N 110 min. 4.0 min. Transmitter 20 Temperature Stable Type EFRRSB40K5 40.0 50 min. N 4.0 min. Receiver N 40 to 100 EFRTSB40K5 40.0 N 105 min. 4.0 min. Transmitter 20 EFRTUB25K5 25.0 N 105 min. 2.5 min. Transmitter 20 (kHz) (dB) (dB) V VV (kHz) (kHz) (dB) (dB) V VV (kHz) (kHz) (dB) (dB) V VV (kHz) (Vrms) (uC) N Design, Specifications are subject to change without notice. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. EF73 Ultrasonic Ceramic Sensors s Dimensions in mm (not to scale) Type U Standard Type f Type H Compact Type f Type S TemperatureStable Type f Type Q Enclosed Type f 13.00.5 10.00.5 13.00.5 10.01.5 Screen Screen f 16.00.5 f 12.60.5 f 16.00.5 f 18.00.5 12.00.5 2-f 0.80.2 7.50.5 Amp. Rec. 12.00.5 12.00.5 21.01.0 21.01.0 2-f 0.80.1 2-f 1.20.1 2-f 1.20.1 10.00.5 8.00.5 15.61.0 10.00.5 s Test Circuits Diagram Test Circuit Diagram for Receiver feed back 30cm Ein Osc. Tw. UCS Rec. RL Amp. UCS Silent Box SCM Test Circuit Diagram for Transmitter Amp. 30 cm Osc. SCM Silent Box Freq. Freq. Counter Counter RL UCS SCM Amp. Osc. Rec. Tw. : : : : : : : 3.9 k Ultrasonic Ceramic Sensor Standard Condenser Microphone Amplifier Oscillator Recorder Tweeter Brel Brel Brel Brel & & & & Kj3/4r Kj3/4r Kj3/4r Kj3/4r 4135 2606 1013 2305 UCS SCM Amp. Osc. Rec. Ein : : : : : : Ultrasonic Ceramic Sensor Standard Condenser Microphone Amplifier Oscilator Recorder 10 Vrms. Brel Brel Brel Brel & & & & Kj3/4r Kj3/4r Kj3/4r Kj3/4r 4135 2606 1013 2305 [Sensitivity] Output voltage of the specimen shall be measured in accordance with the specified Test Circuit and the specified test conditions. The output voltage shall be expressed in decibeles (dB), where 1 V/Pa is 0 dB. [Sound Pressure Level] Maximum sound pressure level from the specimen shall be measured in accordance with the specified Test Circuit and the specified test conditions. The output sound pressure shall be expressed in decibeles (dB), where 2 x 105Pa is 0 dB. Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. EF74 24.51.0 9.50.5 Ultrasonic Ceramic Sensors s Typical Characteristics Frequency Characteristics (Sensitivity) Type U / H Frequency Characteristics (Sound Pressure Level) Type U / H 40 Sensitivity (dB) 45 50 55 TypeS Output S.P.L. (dB) 115 110 105 100 TypeQ TypeS TypeQ 35 40 Frequency (kHz) 45 35 40 Frequency (kHz) 45 EFRRUB25K 35 Output S.P.L.(dB) 40 45 50 55 115 110 105 100 95 EFRTUB25K Sensitivity (dB) 20 25 Frequency (kHz) 30 20 25 Frequency (kHz) 30 Directivity Type U/H/S 0 dB= 41 dB ft Le Type Q R ig ht 0u 15u 15u 30u 0 30u ft e L 15 30 0 15 30 0 R ig h t 45u 45u 45 45 60u -10 -20 60u 60 75u 75 10 20 30 40 60 75u -30 -40 75 90u 0 10 30 50 30 10 0 90u 90 0 10 30 Attenuation (dB) 50 30 10 0 90 Attenuation (dB) Characteristic Change vs. Load Resistance Type U/H/S (40 kHz) Type Q 100 k Sensitivity (dB) Sensitivity (dB) 30 10 k 35 3.9 k 40 45 50 55 30 100 k 35 10 k 40 3.9 k 45 50 55 1 k 1 k 35 40 Frequency (kHz) 45 35 40 Frequency (kHz) 45 Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. EF75 Ultrasonic Ceramic Sensors Application Notes Because the Ultrasonic Sensors are designed for use in the air, they can not be used under the water or others liquid. 1. Design Engineering Notes 1. Application of DC voltage DC voltage shall not be applied to the Ultrasonic Sensors because insulation resistance may deteriorate. 2. Maximum Input Voltage The Ultrasonic Sensors shall not be operated beyond the specified OMaximum Input VoltageO in the catalog or the specifications. 3. Characteristics change owing to load impedance Center frequency and sensitivity change in accordance with load impedance. Therefore, the load characteristics chart shall be taken into consideration in designing circuit. 4. In the Design of Transmitting Circuits It shall be noted that the impedance of the device is as low as 500 (approximately) at the resonance frequency. 2. Mounting Notes 1. Installation It is recommended to hold the Ultrasonic Sensors by means of rubberV sheets or cushions for absorption of mechanical stresses such as shock and vibration. VExcept sulfurated rubber 2. Soldering Soldering of the lead terminals shall be done at a position of 2.5 mm or more apart from bottom plain of the devices. 3. Bending force to the Terminals Abnormal bending force shall not be applied to the terminals of the Sensors, otherwise holding parts of the terminals may be easily broken, resulting in failures and damages of the devices. 4. Directivity Please be cafeful enough in deciding facing position of the sensor because of directivity. 3. Storage Notes 1. Environmental Conditions The Ultrasonic Sensors shall not be operated and/or stored under following environmental conditions; a) To be exposed directly to water or salt water. b) Under conditions of dew formation or frost. c) Under conditions of corrosive atomosphere such as hydrogen sulfide, sulfurous acid, chlorine and ammonia. 2. Long Term Storage The Ultrasonic Sensors shall not be stored under severe conditions of high temperature and high humidity. Store them indoors under 40 C max. and 75 %RH max. Use them within one year and check the solderbility before use. Design, Specifications are subject to change without notice. Ask factory for technical specifications before purchase and/or use. Whenever a doubt about safety arises from this product, please inform us immediately for technical consultation without fail. EF76 |
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