Abstract: Disclosed herein is a medical diagnostic device for determining bleeding times and behavior of bleedings from a standardized wound, (hemmorrhagometry), wherein a flow of a rinsing liquid past the wound is established, thereby to cause the rinsing liquid to contact the wound. A photometric instrument or equivalent is provided for determining a characteristic of the rinsing liquid which is representative of the proportion of blood contained in the rinsing liquid having contacted the wound. The device of the invention is designed such that it permits controlling the temperature of the rinsing liquid and consequently of the bleeding location and of its surrounding area, in order to keep them on a preselected temperature.

Abstract: An electronic process controller is disclosed having automatically bumpless operation. Changes such as transfer between manual and automatic modes, switching between set point sources and adjustment of control parameter values are all accomplished bumplessly with the aid of a settle circuit which adjusts the automatic control signal for bumpless switching while the manual memory freezes the process control signal at its last value before the change was initiated.

Abstract: An electronic process controller is disclosed having analog circuitry for generating an analog control signal, a digital memory for generating a manual control signal and digital circuitry for sequencing of the analog functions. This controller provides drift-free manual control in the manual control mode, tracking of the process control signal in the automatic mode to allow bumpless transfer from automatic mode to manual mode and output ramping to allow bumpless transfer to and from direct digital control mode.