MEMS Capacitive Accelerometer ► Uniaxial ► MF (Medium Frequency; DC to 2.5 kHz ► 4 Wire System ► Amplified Output ► Aluminium Housing / Stainless Steel Housing ► Made in Germany Features ► Range: ±2g to ±200g ► DC Response ► Gas Damped ► Excellent Bias and Scale Factor Stability ► Low Power Consumption ► Differential Mode Options ► Customised Cable Length ► Customised Connector ► TEDS Module Applications ► Structural Monitoring and Testing ► Endurance Testing ► Brake Test ► Vibration Monitoring ► Civil Engineering ► Modal Analysis ► Vehicle Testing ► Automotive Ride Quality & Comfort ► Railway Engineering ► Flutter Test ► Seismic Monitoring ► Tilt Measurements Capacitive MEMS Technology ASC's Medium Frequency (MFseries) capacitive accelerometers are based on the capacitive sensing technology and produce an analog voltage proportional to the input acceleration. The accelerometers can measure both static (gravity) and dynamic accelerations. ASC's MF series can be used for very low to medium frequency vibration measurements from 0Hz to 2.5kHz. The MF series features a MEMS sensor element where the seismic mass is connected between two conductive capacitor plates. When subjected to an input acceleration, the seismic mass oscillates between the two capacitor plates and there is a change in the capacitance. This change in capacitance is converted via an ASIC (Application Specific Integrated Circuit) into a low impedance analog voltage output signal. Description ASC's MF series capacitive accelerometers, 4421-MF and 4425-MF, are analog voltage output sensors. The sensors can be powered by a DC power supply (+5V to +40V) where the output voltage is independent of the supply. The sensors operate in a differential configuration with ±2.7V full-scale output. For the full-scale acceleration range, the output swings between 0.3V and 3V. The differential configuration results in an improved S/N ratio and a better performance. ASC Type 4421-MF and 4425-MF operate in a wide temperature range from -40°C to +125°C. The sensors exhibit exceptional temperature stability, very low non-linearity (<0.5%) and can withstand repetitive shocks as high as 6000g's. ASC Type 4421-MF features a lightweight Aluminium housing and Type 4425-MF features a rugged, corrosion proof stainless steel housing. The sensors are supplied with 6m integral cable as a standard. ASC GmbH ■ Advanced Sensors Calibration ■ Ledererstra&e 10 ■ 85276 Pfaffenhofen ■ Germany ■ Tel. +49 (0) 8441 786 547 -0 ■

Typical Specifications DYNAMIC Range (±g) 2 5 10 30 50 100 200" Shock limitgpk6000 (0.1ms, half-sine) Recovery time ms 1 ELECTRICAL Excitation voltage V DC 5 to 40 Zero acceleration output ±mV 50 Isolation Case Isolated Residual / Broadband noise (±5% frequency range) jV 360 290 360 360 390 390 390 ENVIRONMENTAL Temperature coefficient of sensitivity %/°C 0.01 (Thermal sensitivity shift) Temperature coefficient of bias mg/°C 0.2 0.5 1 3 5 10 20 (Thermal zero shift) Operating temperature range °C -40...

FACTORY CALIBRATION (SUPPLIED WITH THE SENSOR) Range 2g and 5g 10g 30g 50g to 200g Cable Code/Pin Configuration Red Supply + Black Supply -Green Signal + White Signal -ORDERING INFORMATION 4421-MF 002 6 A Model number Range (Ex. 050 is 50g) Cable length (meters) Connector & Pinout ASC GmbH ■ Advanced Sensors Calibration LedererstraSe 10 ■ 85276 Pfaffenhofen ■ Germany ■ Tel. +49 (0) 8441 786 547 -0 ■ [email protected] All data, information, statements, photographs and graphic illustrations made in this data sheet are without any obligation and raise no liabilities...