400STR120

Air Ultrasonic Ceramic Transducers 400ST/R120 Dimensions: dimensions are in mm Impedance/Phase Angle vs. Frequency Tested under 1Vrms Oscillation Level 400SR120 Impedance 400SR120 Phase 400ST120 Impedance 400ST120 Phase Specification 400ST120 400SR120 Center Frequency Bandwidth (-6dB) 400ST120 400SR120 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% Max. Driving Voltage (cont.) -6dB Total Beam Angle Operation Temperature Storage Temperature Transmitter Impedance (Ohm) 100000 40.0±1.0Khz 2.0Khz 2.0Khz 115dB min. 10000 1000 100 35 36 37 38 39 40 41 42 43 44 45 Frequency (Khz) Sensitivity/Sound Pressure Level Tested under 10Vrms @30cm -67dB min. -50 -55 Sensitivity (dB) 130 125 120 SPL (dB) 115 110 105 100 95 90 35 36 37 38 39 40 41 42 43 44 45 Frequency (Khz) 2400 pF 20Vrms 85° typical -30 to 80°C -40 to 85°C -60 -65 -70 -75 -80 -85 -90 All specification taken typical at 25°C Closer frequency tolerance can be supplied upon request. Model available: Beam Angle: Tested at 40.0Khz frequency 330 300 270 240 210 0 0 -6 -12 -18 -24 -30 30 60 90 120 1 2 400ST/R120 400ST/R12B Aluminum Housing Black Al. Housing 180 150 Supplied by Midas Components Ltd - 01493 602602 - www.midascomponents.co.uk Phase Angle (Degree) Receiver 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 Air Ultrasonic Ceramic Transducers 400SR120 Receiver Sensitivity Variation vs. Loaded Resistor 400ST120 Transmitter 400ST/R120 SPL Variation vs. Driving Voltage -40 -45 Sensitivity (dB) -50 125 120 115 SPL (dB) 110 105 100 95 90 85 1K 3.9K 10K 39K 100K 390K -55 -60 -65 -70 -75 -80 Loaded Resistor (Ohm) 0 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 Vrms Center Frequency Shift vs. Loaded Resistor Center Frequency Shift vs. Driving Voltage 5.0 4.0 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4.0 -5.0 1K 3.9K 10K 39K 100K 390K Loaded Resistor (Ohm) 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 0 2 4 6 8 10 12 14 16 Vrms 18 20 22 24 26 28 30 Fc Variation % Sensitivity Variation vs. Temperature SPL Variation vs. Temperature -40 -45 Sensitivity (dB) -50 -60 -65 -70 -75 -80 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Temperature (Degree C) SPL (dB) -55 Fc Variation % 130 125 120 115 110 105 100 95 90 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Temperature (Degree C) 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 0 10 20 30 40 50 60 70 80 90 100 Temperature (Degree C) 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 0 10 20 30 40 50 60 70 80 90 100 Temperature (Degree C) Fc Variation % Fc Variation %