The Selection Guide can be sorted by clicking on the appropriate underlined column heading

Ultrasonic Sensors - Standard Air Transducers
 

Open Types - 
Provide high sensitivity and sound pressure level, wide bandwidth, excellent durability in wide temperature/humidity ranges, and high stability in electrical/mechanical characteristics. Very suitable for continual wave driving, such as Doppler motion detectors. 
 
Enclosed Types - 
Can be used for outdoor applications or in dusty environments. Enclosed in a metal housing, the back of the transducer is completely sealed with resin, protecting from exposure to harsher environments. Although watertight, these are not suitable for underwater applications. 
 
Pulse Transit Types - 
Designed specifically to be transceivers, these open or enclosed types have extra damping built internally. They are ideal for echo ranging systems, having low ringing characteristics when compared to the standard transmitter/receiver types. 
 
Wide Bandwidth Type - 
For use where application requires a wider bandwidth. 
 
Mirror Bender Type -  
Dual sensor unit housing 45 degree acoustic delay mirror. The ringing of the transmitter is offset by this delay path which, theoretically, means objects can be measured at very close distances. 
 
Air Coupling Types - 
With higher frequencies, these transducers are designed specially for proximity sensing applications. A special acoustic matching layer of quarter wavelength is an intermediate between the piezo element and the air, as an impedance bridge to convert acoustical energy efficiently. 
 
Accessories - 
SQS-04 - Transducer assembly (400ST/R100 covered by rubber boot with a shield cable) 
SQS-05 - Transducer assembly (400ST/R120 covered by rubber boot with a shield cable) 
SQS-06 - Transducer assembly (400ST/R160 covered by rubber boot with a shield cable) 
S40000 - Tuning fork type AT Cut Quartz - 40,000Hz

Selection Guide

Part Number Type (see narrative above) Description Centre Frequency (KHz) Sensitivity or SPL at centre frequency (min) Bandwidth -6dB (KHz) Capacitance at 1KHz (pF) Max Continual Driving Voltage Supplier P D F 400SR100 Open Receiver 40 +/- 1 -70dB 3.0 1900 +/- 20% 20Vp-p Prowave 250ST160 Open Transmitter 25 +/- 1 112dB 2.0 2400 +/- 20% 20Vrms Prowave 400ET180 Enclosed Transmitter 40 +/- 1 115dB 1.5 2400 +/- 20% 15Vrms Prowave 400ER080 Enclosed Receiver 40 +/- 1 -80dB 2.0 1700 +/- 20% 15Vrms Prowave 400ET080 Enclosed Transmitter 40 +/- 1 100dB 1.5 1700 +/- 20% 15Vrms Prowave 328ER250 Enclosed Receiver 32.8 +/- 1 -67dB 1.0 2400 +/- 20% 20Vrms Prowave 328ET250 Enclosed Transmitter 32.8 +/- 1 113dB 1.0 2400 +/- 20% 20Vrms Prowave 250ER250 Enclosed Receiver 25 +/- 1 -63dB 1.0 2400 +/- 20% 15Vrms Prowave 250ET250 Enclosed Transmitter 25 +/- 1 113dB 1.0 2400 +/- 20% 15Vrms Prowave 400SR160 Open Receiver 40 +/- 1 -65dB 2.5 2400 +/- 20% 20Vrms Prowave 400ST160 Open Transmitter 40 +/- 1 119dB 2.0 2400 +/- 20% 20Vrms Prowave 400ET250 Enclosed Transmitter 40 +/- 1 115dB 1.0 2400 +/- 20% 20Vrms Prowave 400ST120 Open Transmitter 40 +/- 1 115dB 2.0 2400 +/- 20% 20Vrms Prowave 400ER250 Enclosed Receiver 40 +/- 1 -70dB 1.0 2400 +/- 20% 20Vrms Prowave 400ST100 Open Transmitter 40 +/- 1 110dB 2.5 1900 +/- 20% 20Vp-p Prowave 328SR180 Open Receiver 32.8 +/- 1 -64dB 2.0 2400 +/- 20% 20Vrms Prowave 328ST180 Open Transmitter 32.8 +/- 1 117dB 2.0 2400 +/- 20% 20Vrms Prowave 328SR160 Open Receiver 32.8 +/- 1 -67dB 2.5 2400 +/- 20% 20Vrms Prowave 328ST160 Open Transmitter 32.8 +/- 1 115dB 2.5 2400 +/- 20% 20Vrms Prowave Part Number Type (see narrative above) Description Centre Frequency (KHz) Sensitivity or SPL at centre frequency (min) Bandwidth -6dB (KHz) Capacitance at 1KHz (pF) Max Continual Driving Voltage Supplier P D F 250SR240 Open Receiver 25 +/- 1 -63dB 1.8 2400 +/- 20% 20Vrms Prowave 250ST240 Open Transmitter 25 +/- 1 115dB 1.5 2400 +/- 20% 20Vrms Prowave 250SR180 Open Receiver 25 +/- 1 -65dB 1.8 2400 +/- 20% 20Vrms Prowave 250ST180 Open Transmitter 25 +/- 1 112dB 1.5 2400 +/- 20% 20Vrms Prowave 250SR160 Open Receiver 25 +/- 1 -65dB 2.0 2400 +/- 20% 20Vrms Prowave 400SR120 Open Receiver 40 +/- 1 -67dB 2.0 2400 +/- 20% 20Vrms Prowave 320SR093 Air Coupling Transceiver 320 +/-10 -65dB 10 270 +/-20% 50Vp-p 10% duty cycle Prowave 400EP18A-TC Pulse Transit Transceiver 40 +/-1 103dB/-75dB 1.5 5200 100Vp-p 2% duty cycle Prowave 235AC130 Air Coupling Transceiver 235 +/-10 -73dB 10 530 50Vp-p 10% duty cycle Prowave 080AC350 Air Coupling Transceiver 80 +/-10 -58dB 11 3000 50Vp-p 10% duty cycle Prowave 125SR250 Air Coupling Transceiver 125 +/-10 -58dB 11 1120 50Vp-p 10% duty cycle Prowave 500MB120 Mirror Bender Dual transducer 50 +/-1 113dB/-67dB 3 2400 20Vrms Prowave 400ER180 Enclosed Receiver 40 +/- 1 -70dB 1.5 2400 +/- 20% 15Vrms Prowave 400PT100 Pulse Transit Transceiver 40 +/- 1 110dB/-68dB 2.0 1600 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400EP125 Pulse Transit Transceiver 40 +/-1 98dB/-80dB 1.5 1400 +/- 20% 20Vrms Prowave 400EP14D-TC Pulse Transit Transceiver 40 +/-1 97dB/-80dB 1.5 3100 100Vp-p 2% duty cycle Prowave 080SR365 Air Coupling Transceiver 80 +/-5 -57dB 4.5 2800 +/-20% 700Vp-p 2% duty cycle Prowave 210AC180 Air Coupling Transceiver 210 +/- 10 20dB/-75dB 10.0 580 +/- 20% 50Vp-p 10% cycle Prowave 400WB160 Wide Bandwidth Transceiver 40 +/- 1 105dB/-80dB 15.0 2400 +/- 20% 20Vrms Prowave 480EP900 Pulse Transit Transceiver 48 +/- 1 110dB/-80dB 15.0 2400 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave Part Number Type (see narrative above) Description Centre Frequency (KHz) Sensitivity or SPL at centre frequency (min) Bandwidth -6dB (KHz) Capacitance at 1KHz (pF) Max Continual Driving Voltage Supplier P D F 400EP250 Pulse Transit Transceiver 40 +/- 1 113dB/-72dB 4.0 2400 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400EP18D Pulse Transit Transceiver 40 +/- 1 100dB/-80dB 1.2 1750 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400EP14D Pulse Transit Transceiver 40 +/- 1 108dB/-78dB 1.5 1250 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400EP18A Pulse Transit Transceiver 40 +/- 1 108dB/-75dB 1.5 1800 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400PT160 Pulse Transit Transceiver 40 +/- 1 117dB/-65dB 2.0 2400 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 400PT120 Pulse Transit Transceiver 40 +/- 1 115dB/-68dB 2.0 2400 +/- 20% 100Vp-p burst (0.4ms) 2% duty cycle Prowave 043SR750 Air Coupling Transceiver 43 +/-5 -57dB 4 5700 100Vp-p 10% duty cycle Prowave PR40-18S Enclosed Receiver 40 -78dB n.a. 2200 Sanwa PC40S-18B Pulse Transit Transceiver 40 100dB/-80dB n.a 1650 Sanwa PC40-18S Pulse Transit Transceiver 40 100dB/-80dB n.a. 2200 Sanwa PT40-18S Enclosed Transmitter 40 106dB n.a. 2200 Sanwa SCS-401T Open Transmitter 40 +/- 1 106dB n.a. 1100 +/- 20% 60Vp-p Sanwa SCM-401R Open Receiver 40 +/- 1 -65dB n.a. 2400 +/- 20% 60Vp-p Sanwa PC40S-15 Pulse Transit Transceiver 40 100dB/-80dB n.a. 1650 Sanwa