| Air Ultrasonic Transducer - Open Type |
 |
The Standard Open type transducers consist of a piezoelectric ceramic disc mounted at the node of its fundamental resonant frequency, a conical metal resonator bonded at the center of disc acting as a rigid piston. This special construction provides high sensitivity, wider bandwidth, and excellent durability in wide temperature and humidity ranges and high stability in electrical and mechanical characteristics. Due to its free vibration character the open type transducers are very suitable for continual wave driving, such as Doppler motion detector |
| Model Number | Description | Center Frequency (KHz) |
Sensitivity or SPL (min.) |
Bandwidth (-6dB) |
Dimensions (mm) |
|
250ST160 250SR160 |
Transmitter | 25.0±1.0 | 112dB | 2.0KHz | 16.2Ø x 12.0 |
| Receiver | -62dB | ||||
|
250ST180 250SR180 |
Transmitter | 112dB | 1.5KHz | 18.2Ø x 14.2 | |
| Receiver | -62dB | 1.8KHz | |||
|
250ST240 250SR240 |
Transmitter | 115dB | 1.5KHz | 24.0Ø x 14.0 | |
| Receiver | -60dB | 1.8KHz | |||
|
328ST160 328SR160 |
Transmitter | 32.8±1.0 | 115dB | 2.0KHz | 16.2Ø x 9.6 |
| Receiver | -67dB | 2.5KHz | |||
|
328ST180 328SR180 |
Transmitter | 117dB | 2.0KHz | 18.2Ø x 14.2 | |
| Receiver | -64dB | ||||
|
400ST100 400SR100 |
Transmitter | 40.0±1.0 | 112dB | 2.5KHz | 9.7Ø x 6.7 |
| Receiver | -67dB | 3.0KHz | |||
|
400ST120 400SR120 |
Transmitter | 115dB | 2.0KHz | 12.7Ø x 8.8 | |
| Receiver | -67dB | ||||
|
400ST160 400SR160 |
Transmitter | 120dB | 2.0KHz | 16.2Ø x 12 | |
| Receiver | -61dB | 2.5KHz | |||
| 500MB120 | Dual Pack | 50.0±1.0 | 113dB (TX) -67 dB (RX) |
3.0KHz | Dual Pack |
SPL: 0dB = 0.0002μbar, measured upon 10Vrms sine wave at 30 cm distance; Sensitivity: 0dB re 1V/μbar, receiver in parallel with a 3.9K Ohm resistor |
|||||