Seismometers are designed to measure ground movements/vibrations caused by earthquakes, excavations, boring, drilling, etc. They record these vibrations as graphs often known as seismographs. Accelerometers are used to measure static or dynamic accelerating forces. Encardio- Rite manufactures earthquake, dam seismograph and accelerometer sensor in India under license from Gaia code, UK.
Model EADA-350F Accelerometer with Digital Output is based on a truly rectilinear suspension system. The internal 8 channel 24 bit high-resolution digitizer utilizes the wide dynamic range of the feedback sensor. The standard frequency passband is flat to acceleration from DC to 350 Hz. The digital sensor noise performance is better than 0.15 µ m/s2/√Hz.
Model ESDA-120S Broadband Seismometer with Digital Output has an internal 8 channel 24 bit high-resolution digitizer which utilizes the extremely large dynamic range of the sensor as high gain and low gain digital outputs. The standard frequency passband is flat to velocity from 0.00833 Hz to 150Hz.
It is extremely simple to install Encardio-Rite’s seismograph and accelerometer digital sensor. Three levelling feet ensure that the sensor to be levelled. The North/South ordination points are machined on the sensor base to align the sensor accurately. The errors in the pointer to the sensor orientation is less than 0.1 degrees.