EFRRHB40K5 [PANASONIC]
Ultrasonic Ceramic Sensors; 超声波传感器陶瓷
| 型号： | EFRRHB40K5 |
| 厂家： | 
PANASONIC |
| 描述： | Ultrasonic Ceramic Sensors |
| 文件： | 总5页 (文件大小：451K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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.
■ Features
■ Recommended Applications
● High output S.P.L.: 112 dB min. (Ex. EFRTUB40K5)
● High sensitivity: Ð45 dB min. (Ex. EFRRUB40K5)
● Excellent temperature and humidity durability
● Small in size
Ultrasonic wave transmitter and receiver for;
● Proximity switch for burglar alarm system, parking
meter and automatic door opener
● Remote control equipment for such as air conditioner
and garage door opener
● Applicable to multi-function remote control system
because of its wide bandwidth
■ Explanation of Part Numbers
Ð EF72 Ð
Ultrasonic Ceramic Sensors
■ Ratings and Characteristics
Type
Standard Type
Part No.
EFRRUB40K5
40.0
EFRTUB40K5
EFRRUB25K5
25.0
EFRTUB25K5
25.0
Item
Nominal Frequency
(kHz)
(dB)✽
(dB)✽✽
(kHz)
40.0
Ñ
Sensitivity
Ð45 min.
Ñ
Ð45 min.
Ñ
Ñ
Sound Pressure Level
Bandwidth
112 min.
4.0 min.
Transmitter
20
105 min.
2.5 min.
Transmitter
20
4.0 min.
Receiver
Ñ
2.5 min.
Receiver
Ñ
Application
Maximum Input Voltage
Operating Temperature Range
(Vrms)
(ûC)
Ð20 to 60
Type
Compact Type
Temperature Stable Type
Part No.
EFRRHB40K5
40.0
EFRTHB40K5
40.0
EFRRSB40K5
40.0
EFRTSB40K5
40.0
Item
Nominal Frequency
(kHz)
(dB)✽
(dB)✽✽
(kHz)
Sensitivity
Ð47 min.
Ñ
Ñ
Ð50 min.
Ñ
Ñ
Sound Pressure Level
Bandwidth
110 min.
4.0 min.
Transmitter
20
105 min.
4.0 min.
Transmitter
20
4.0 min.
Receiver
Ñ
4.0 min.
Receiver
Ñ
Application
Maximum Input Voltage
Operating Temperature Range
(Vrms)
(ûC)
Ð20 to 60
Enclosed Type
Ð40 to 100
Type
Part No.
EFRRQB40K5
EFRTQB40K5
40.0
Item
Nominal Frequency
(kHz)
(dB)✽
(dB)✽✽
(kHz)
40.0
Ð55 min.
Ñ
Sensitivity
Ñ
Sound Pressure Level
Bandwidth
105 min.
1.0 min.
Transmitter
20
1.0 min.
Receiver
Ñ
Application
Maximum Input Voltage
(Vrms)
(ûC)
Operating Temperature Range
Ð20 to 60
✽ 0 dB=1 V/Pa
✽✽ 0 dB=2×10Ð5 Pa
Ð EF73 Ð
Ultrasonic Ceramic Sensors
■ Dimensions in mm (not to scale)
Type U
Type H
Type S
Type Q
Standard Type
Compact Type
TemperatureStable Type
Enclosed Type
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
■ Test Circuits Diagram
Test Circuit Diagram for Transmitter
Test Circuit Diagram for Receiver
RL
: 3.9 kΩ
UCS : Ultrasonic Ceramic Sensor
SCM : Standard Condenser Microphone Brel & Kj¾r 4135
UCS : Ultrasonic Ceramic Sensor
SCM : Standard Condenser Microphone Brel & Kj¾r 4135
Amp. : Amplifier
Osc. : Oscilator
Rec. : Recorder
Ein : 10 Vrms.
Brel & Kj¾r 2606
Brel & Kj¾r 1013
Brel & Kj¾r 2305
Amp. : Amplifier
Osc. : Oscillator
Rec. : Recorder
Tw. : Tweeter
Brel & Kj¾r 2606
Brel & Kj¾r 1013
Brel & Kj¾r 2305
[Sensitivity]
[Sound Pressure Level]
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.
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 × 10Ð5Pa is 0 dB.
Ð EF74 Ð
Ultrasonic Ceramic Sensors
■ Typical Characteristics
Frequency Characteristics (Sound Pressure Level)
Frequency Characteristics (Sensitivity)
EFRRUB25K
EFRTUB25K
Directivity
Type U/H/S
Type Q
Characteristic Change vs. Load Resistance
Type U/H/S (40 kHz)
Type Q
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ω
Ð EF75 Ð
Ultrasonic Ceramic Sensors
2. Soldering
Application Notes
Soldering of the lead terminals shall be done
at a position of 2.5 mm or more apart from
bottom plain of the devices.
Because the Ultrasonic Sensors are designed for
use in the air, they can not be used under the
water or others liquid.
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.
1. Design Engineering Notes
1. Application of DC voltage
DC voltage shall not be applied to the
Ultrasonic Sensors because insulation
resistance may deteriorate.
4. Directivity
2. Maximum Input Voltage
Please be cafeful enough in deciding facing
position of the sensor because of directivity.
The Ultrasonic Sensors shall not be operated
beyond the specified ÒMaximum Input VoltageÓ
in the catalog or the specifications.
3. Characteristics change owing to load
impedance
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.
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 Ω (approximately) at
the resonance frequency.
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.
2. Mounting Notes
1. Installation
It is recommended to hold the Ultrasonic
Sensors by means of rubber✽ sheets or cushions
for absorption of mechanical stresses such as
shock and vibration.
✽Except sulfurated rubber
Ð EF76 Ð
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