Force test rig PT

automatedtonometerindustrial

Testing device for applanation tonometer • laser interferometric force sensor • traceability to national standards by calibrating the force sensor with a 5g standard weight • test specimen is calibrated on the statically mounted force sensor • graphic display of the entire tonometer characteristic curve possible • certificates of the Physikalisch-Technische Bundesanstalt and the Landesamt für Mess- und Eichwesen Thüringen (State Office for Metrology and Verification Thuringia) The interference-optical test device for applanation tonometers consists of an automated laser-optical test apparatus with USB interface and evaluation software for PC/laptop. Due to the variable design, the test device is suitable for different types of applanation tonometers. The applanation force set on the tonometer to be tested is automatically detected in the entire range of mobility of the tonometer. By detecting the mobility limits of the tonometer, the complete force characteristic curve over the mobility range can be displayed graphically in addition to the applanation force value to be determined in the center of the mobility range according to the test specification. The sensor used is an interference-optical force sensor with a resolution of 0.01 mN and a measuring range of 100 mN. To determine the measured value, the tonometer is moved against the force sensor using an electromechanical drive unit. The measured force progression is used internally to control the movement sequence itself and for detecting the limits of mobility. The measured tonometer force value in the center of the range of motion is compared with the permissible