Product Information Sonic Joker® 275 Precision Ultrasonic Sensor for Distance and Thickness Measurement - Maximum range 2500 mm - Resolution 0.01mm - Self-calibration by reference bar - Integrated fan for air homogenization Figure 1: The Controller Unit Sonic Joker 275 and two ultrasonic Fan-Sensors FX 150 for distance and thickness measurement. Distance and Thickness Sonic Joker 275 is a high resolution ultrasonic measurement device designed for precise distance measurement in quality control and continuous production. The Sonic Joker 275 is the follow-up model of the well established Sonic Joker 270. Almost any solid object or liquid level can be measured with high accuracy, despite of its color and surface structure. Due to the high intensity of the ultrasonic pulses, even highly sound absorbing materials like foams, textiles and insulation mats can be measured. A standard application is the thickness measurement of products made of foam, plastic, rubber, and stones in the production process. Fill levels of liquids, pastes and granulates can also be recorded. Process control is assisted by special I/O functions. A USB and serial interface and two analog and digital outputs are available for data transfer. Two sensor heads are connected to one controller unit for comprehensive survey and redundancy (Figs. 1 and 6). Free hanging objects in continuous production are measured with an antiparallel sensor alignment. The TFT display of the controller unit is continuously visualizing the measured distance or thickness values and relevant measurement parameters. High Accuracy The ultrasonic distance measurement is carried out according to the pulse/echo method. The distance between the sensor head and the reflecting object is calculated from the traveling time of the sound pulses from the sensor to the object and their echoes. The knowledge of the sound propagation conditions, i.e. the velocity of sound, is essential for a high accuracy measurement. This is achieved by the smart sensor head FX 150 of Sonic Joker 275: A built-in reference bar gives continuous calibration signals and compensates for temperature changes and different air composition (Fig. 7). The integrated ventilation fan homogenizes the air volume between the sensor head and the object, thus giving definite and unspoilt sound propagation conditions for high accuracy measurements. For operation in a dusty environment an air filter (Fig. 8) is available for the sensor heads. For mounting the sensors robust sensor holders are available. SONIC TOOLS The measurement data is transmitted continuously to a PC. The software SONIC TOOLS comprises subroutines for setting Sonic Joker 275 parameters and continuous production survey with limit control. Additionally, the measurement data can be saved and visualized graphically (Figs. 3, 5) by the software.

moving object reference surface Figure 2: Schematic view of a thickness measurement with two sensor heads aligned for parallel thickness measurement using a reference surface. Figure 3: Graphical display of a continuous parallel thickness measurement in the production control module of the PC software SONIC TOOLS. free hanging production sensor 2 FX 150 Figure 4: Schematic view of a thickness measurement with two sensor heads aligned for anti-parallel measurement without support. Figure 5: Graphical display of a continuous antiparallel thickness measurement in the production control module of...

Technical Data Controller Unit supply voltage power consumption weight dimensions (I x w x h) distance range resolution accuracy * measurement rate serial interface analog output protective class Sensor Head FX 150 converter diameter dimensions weight beam divergence protective class * in homogeneous air PC-Software SONIC TOOLS - control of device parameters - selection of operational modes - visualization of measurement data - production control Order No. Figure 6: The Controller Unit Sonic Joker 275 and the two ultrasonic sensor heads FX 150. The smart ultrasonic sensor head FX 150 has been...