400ST120

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 400ST/R120 Dimensions: dimensions are in mm Impedance/Phase Angle vs. Frequency 400ST120 Transmitter 400SR120 Receiver Center Frequency 40.0±1.0Khz Bandwidth (-6dB) 400ST120 2.0Khz 400SR120 2.0Khz -6dB Total Beam Angle Operation Temperature Storage Temperature 35 36 37 38 39 40 41 42 43 44 45 Frequency (Khz) Sensitivity/Sound Pressure Level Tested under 10Vrms @30cm -67dB min. 2400 pF 20Vrms 85° typical -30 to 80°C -50 130 -55 125 -60 120 -65 115 -70 110 -75 105 -80 100 -85 95 -90 90 35 36 37 38 40 41 42 43 44 Beam Angle: Tested at 40.0Khz frequency 330 300 Aluminum Housing Black Al. Housing 39 Frequency (Khz) -40 to 85°C Model available: 400ST/R120 400ST/R12B 1000 115dB min. All specification taken typical at 25°C Closer frequency tolerance can be supplied upon request. 1 2 10000 270 0 0 -6 -12 -18 -24 -30 30 60 90 240 120 210 180 150 45 SPL (dB) Max. Driving Voltage (cont.) 90.0 75.0 60.0 45.0 30.0 15.0 0.0 -15.0 -30.0 -45.0 -60.0 -75.0 -90.0 100 Sensitivity (dB) Transmitting Sound Pressure Level at 40.0Khz; 0dB re 0.0002µbar per 10Vrms at 30cm Receiving Sensitivity at 40.0Khz 0dB = 1 volt/µbar Capacitance at 1Khz ±20% 100000 Impedance (Ohm) Specification Phase Angle (Degree) Tested under 1Vrms Oscillation Level 400SR120 Impedance 400SR120 Phase 400ST120 Impedance 400ST120 Phase PROWAVE Air Ultrasonic Ceramic Transducers 400ST/R120 400SR120 Receiver 400ST120 Transmitter Sensitivity Variation vs. Loaded Resistor SPL Variation vs. Driving Voltage -45 125 120 -50 115 SPL (dB) Sensitivity (dB) -40 -55 -60 110 105 -70 100 95 -75 90 -65 85 -80 1K 3.9K 10K 39K 100K 0 390K 2 4 6 8 10 12 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 3.9K 10K 39K 100K 0 390K 20 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) 18 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 % 16 Center Frequency Shift vs. Driving Voltage Fc Variation % Fc Variation % Center Frequency Shift vs. Loaded Resistor 1K 14 Vrms Loaded Resistor (Ohm) 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