An image input unit acquires a first image and a second image. The conductive panel has a matrix of device areas that each include a plurality of rows of contacts that are located outside of a die area. The PAn-C composite is prepared using a high-speed impingment mill with high-speed fluid striking and grinding functions. If the capacitor discharges at a rate higher or lower than predetermined values after the S1 and S2 disconnect switches are opened, then a fault condition is registered, and the S1 and S2 switches will not be commanded to return to a closed position, thus isolating the fault from both the source and the load. The tourniquet is oriented in the housing so that a free end of the tourniquet is in registration with the opening. More particularly, the present invention relates to devices for measurement of glucose in a host that incorporate a hydrophilic electrode domain andor a cellulosic-based interference domain.