400EP250

Electra House, 32 Southtown Road Great Yarmouth, Norfolk NR31 0DU, England 

Telephone +44 (0)1493 602602 Fax +44 (0)1493 665111 Email:sales@midassensors.com www.midassensors.com 

## **PROWAVE** 

## **Air Ultrasonic Ceramic Transducers** 

## **400EP250** 

## **Dimensions:** dimensions are in mm 

## **Impedance/Phase Angle vs. Frequency** 

Tested under 1Vrms Oscillation Level 

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100000 90<br>75<br>60<br>45<br>10000 SS et 30<br>15<br>0<br>-15<br>1000 SS ee eet -30<br>-45<br>-60<br>-75<br>100 eee eee -90<br>35 36 37 38 39 40 41 42 43 44 45<br>Frequency (Khz)<br>Sensitivity/Sound Pressure Level<br>Tested under 10Vrms @30cm<br>-50-55 [TEEPE 130<br>-60 LETT PTET PTT ett ttt ty 120<br>-65-70 PTET TTT tTErr YeeyErr Yeey Yeeyey yy PryTTTyy TYed<br>-70 SERREGEDGED <ONEREEE 110<br>-75 BERREEDZEPZARRSSeee<br>-80 Beng4242 ee e 100<br>-85 Paes<br>-90 [TTT ITT Eri iT yt Pret tt 90<br>35 36 37 38 39 40 41 42 43 44 45<br>Frequency (Khz)<br>Impedance (Ohm)<br>Phase Angle (Degree)<br>SPL (dB)<br>Sensitivity (dB)<br>**----- End of picture text -----**<br>


## **Specification** 

Transceiver 

## **400EP250** 

**Center Frequency** 40.0 ± 1.0Khz **Bandwidth** (-6dB) 400EP250 4.0Khz 113dB min. 

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Transmitting Sound Pressure 113dB min.<br>Sensitivity/Sound Pressure Level<br>Level<br>Tested under 10Vrms @30cm<br>at resonant frequency; 0dB re<br>0.0002 µ bar per 10Vrms at 30cm<br>Receiving Sensitivity -72dB min. -55-50-55 [TEEPE<br>at resonant frequency 0dB = 1 -60 LETT PTET PTT ett<br>volt/ µ bar -65-70 PTET TTT tTErr YeeyErr Yeey Yeeyey yy<br>SERREGEDGED<br>Nominal Impedance (Ohm) 2400 -75 BERREEDZEPZARRSSeee<br>-80 Beng4242 ee<br>Ringing (ms) 1.2 max. -85 Paes<br>-90 [TTT ITT Eri iT yt<br>Capacitance  at 1Khz   ± 20% 2400 pF 35 36 37 38 39 40 41 42 43<br>Frequency (Khz)<br>Max. Driving Voltage  (cont.) 20Vrms<br>Total Beam Angle -6dB 30 °<br>Beam Angle:  Tested at 40.0Khz frequency<br>°<br>Operation Temperature -30 to 80 C<br>Storage Temperature -40 to 85 ° C  0<br> 330  30<br> 0<br>—_—_——— All specification taken typical at 25 ° C  300 Uf -6 -12  wan  60<br>-18<br>Closer frequency tolerance, shorter ringing and /Lo (\ -24  f : .<br>wider bandwidth models can be supplied upon  270 [ | K A -30  J \ \ 90<br>ry i AL] Ff |<br>request.<br>\ AS BAS | /<br> 240  120<br>Model available:<br> 210  150<br> 180<br>Sensitivity (dB)<br>**----- End of picture text -----**<br>


**Beam Angle:** Tested at 40.0Khz frequency 

~~—_—_———~~ All specification taken typical at 25 ° C Closer frequency tolerance, shorter ringing and wider bandwidth models can be supplied upon request. 

|1|400EP250|Aluminum Housing|
|---|---|---|
|2|400EP25B|Black Al.Housing|