400EP250

Telephone +44 (0)1493 602602 Fax +44 (0)1493 665111 Email:sales@midassensors.com www.midassensors.com Electra House, 32 Southtown Road Great Yarmouth, Norfolk NR31 0DU, England PROWAVE Air Ultrasonic Ceramic Transducers 400EP250 Dimensions: dimensions are in mm Impedance/Phase Angle vs. Frequency 100000 90 75 60 45 30 15 0 -15 -30 -45 -60 -75 -90 400EP250 Transceiver Center Frequency 40.0±1.0Khz Bandwidth (-6dB) 400EP250 4.0Khz Transmitting Sound Pressure Level at resonant frequency; 0dB re 0.0002µbar per 10Vrms at 30cm Receiving Sensitivity at resonant frequency 0dB = 1 volt/µbar Nominal Impedance (Ohm) 113dB min. Ringing (ms) 1.2 max. Capacitance at 1Khz ±20% 2400 pF Max. Driving Voltage (cont.) 20Vrms -6dB Total Beam Angle Operation Temperature 30° -30 to 80°C Storage Temperature -40 to 85°C Impedance (Ohm) Specification 10000 1000 100 35 36 37 38 39 40 41 42 44 45 Frequency (Khz) Sensitivity/Sound Pressure Level Tested under 10Vrms @30cm -55 120 -60 -65 110 -70 -75 100 -80 -85 -90 90 35 36 37 38 39 40 41 42 44 Frequency (Khz) Beam Angle: Tested at 40.0Khz frequency 330 300 270 0 0 -6 -12 -18 -24 -30 30 60 90 240 120 210 Aluminum Housing Black Al. Housing 43 180 150 45 SPL (dB) Sensitivity (dB) 2400 130 -50 -72dB min. All specification taken typical at 25°C Closer frequency tolerance, shorter ringing and wider bandwidth models can be supplied upon request. Model available: 1 400EP250 2 400EP25B 43 Phase Angle (Degree) Tested under 1Vrms Oscillation Level