The 3187D by Dytran Instruments is a low frequency accelerometer which feature its sensitivity of 500mV/g and a low frequency response of 0.48 Hz. For this model, it comes with an annular shear ceramic sensing element which is engineered to fit with 6194 model. If the assembly is made, it create a sensor with is fully functional with the condition having an IP65 environment. Plus, the equipment is highly sealed so that it can be used for environment having a high humidity and full of dirt.