328SR160

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 328ST/R160 Dimensions: dimensions are in mm Impedance/Phase Angle vs. Frequency Tested under 1Vrms Oscillation Level 328SR160 Impedance 328SR160 Phase 328ST160 Impedance 328ST160 Phase 328ST160 Transmitter 328SR160 Receiver Center Frequency 32.8±1.0Khz Bandwidth (-6dB) 328ST160 2.5Khz Impedance (Ohm) 100000 90 75 60 45 30 15 0 -15 -30 -45 -60 -75 -90 10000 1000 100 28 29 30 31 32 33 34 35 36 37 Phase Angle (Degree) Specification 38 Frequency (Khz) 2.5Khz 115dB min. Max. Driving Voltage (cont.) 20Vrms -67dB min. 2400 pF -6dB Total Beam Angle Operation Temperature -30 to 80°C Storage Temperature -40 to 85°C 100° typical All specification taken typical at 25°C Closer frequency tolerance can be supplied upon request. Sensitivity/Sound Pressure Level Tested under 10Vrms @30cm -50 130 -55 125 -60 120 -65 115 -70 110 -75 105 -80 100 -85 95 -90 90 28 29 30 31 32 33 34 35 36 Frequency (Khz) Beam Angle: Tested at 32.8Khz frequency 330 300 270 0 0 -6 -12 -18 -24 -30 30 60 90 Model available: 240 1 328ST/R160 Aluminum Housing 37 120 210 180 150 38 SPL (dB) Transmitting Sound Pressure Level at 32.8Khz; 0dB re 0.0002µbar per 10Vrms at 30cm Receiving Sensitivity at 32.8Khz 0dB = 1 volt/µbar Capacitance at 1Khz ±20% Sensitivity (dB) 328SR160 PROWAVE Air Ultrasonic Ceramic Transducers 328ST/R160 328ST160 Transmitter Sensitivity Variation vs. Loaded Resistor SPL Variation vs. Driving Voltage -40 130 -45 125 -50 120 -55 115 SPL (dB) Sensitivity (dB) 328SR160 Receiver -60 -65 110 105 -70 100 -75 95 -80 90 1K 3.9K 10K 39K 100K 390K 0 2 4 6 8 10 12 Loaded Resistor (Ohm) 10K 39K 100K 0 390K 22 24 26 28 30 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Vrms SPL Variation vs. Temperature Sensitivity Variation vs. Temperature -40 130 -45 125 -50 120 -55 115 SPL (dB) Sensitivity (dB) 20 0.0 -0.5 -1.0 -1.5 -2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0 -5.5 -6.0 Loaded Resistor (Ohm) -60 -65 110 105 -70 100 -75 95 -80 90 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 -40 -30 -20 -10 0 Temperature (Degree C) Fc Variation % 0 10 20 30 40 50 Temperature (Degree C) 20 30 40 50 60 70 80 90 100 Center Frequency Shift vs. Temperature 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 -40 -30 -20 -10 10 Temperature (Degree C) Center Frequency Shift vs. Temperature Fc Variation % 18 Center Frequency Shift vs. Driving Voltage Fc Variation % Fc Variation % 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 3.9K 16 Vrms Center Frequency Shift vs. Loaded Resistor 1K 14 60 70 80 90 100 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 -40 -30 -20 -10 0 10 20 30 40 50 Temperature (Degree C) 60 70 80 90 100