Abstract: An improved consistometer which continuously measures the consistency of a stream of material from apparatus manufacturing the material includes a resilient blade rotated in the stream of material and which is rotated about an axis that is parallel to the direction of flow of the stream of material. A reference blade is rotated in synchronism with the resilient panel. A pair of detectors are arranged with the blade in the manner so that each detector detects the passage of a corresponding blade and provides a corresponding electrical signal. A circuit connected to the detectors provides a start pulse and a stop pulse in accordance with the signals from the detectors and not to noise. A clock provides timing pulses. A network connected to the start and stop pulse circuit and to the clock determines the consistency of the material in accordance with the start and stop pulses and the timing pulses.

Abstract: A consistometer continuously measures the consistency of a stream of material flowing through it which is provided by apparatus manufacturing the material. The consistometer includes a resilient member located in the stream of material and a reference member located outside of the stream of material and both members rotate synchronously. Sensors spatially related to the rotating member sensor provides reference member pulses in accordance with the reference member sensor sensing the passage of the reference member and a second circuit connected to the resilient member sensor provides resilient member pulses in accordance with the resilient member sensor sensing passage of the resilient member. A network provides an output corresponding to the consistency of the material in accordance with the reference member pulses and the resilient member pulses. The consistometer also includes circuitry for self calibration.

Abstract: A consistometer continuously measures the consistency of a stream of material flowing through it which is provided by apparatus manufacturing the material. The consistometer includes a resilient member located in the stream of material and a reference member located outside of the stream of material and both members rotate synchronously. Sensor spatially related to the rotating members provide corresponding signals. A circuit connected to the reference member sensor provides reference member pulses in accordance with the reference member sensor sensing the passage of the reference member and a second circuit connected to the resilient member sensor provides resilient member pulses in accordance with the resilient member sensor sensing passage of the resilient member. A network provides an output corresponding to the consistency of the material in accordance with the reference member pulses and the resilient member pulses.

Abstract: A consistometer continuously measures the consistency of a stream of material flowing through it. The consistometer includes a resilient member located in the stream of material and a reference member located outside of the stream of material and both members rotate synchronously. Sensors spatially related to the rotating members provide corresponding signals. A circuit connected to the reference member sensor provides reference member pulses in accordance with the reference member sensor sensing the passage of the reference member and a second circuit connected to the resilient member sensor provides resilient member pulses in accordance with the resilient member sensor sensing passage of the resilient member. A network provides an output corresponding to the consistency of the material in accordance with the reference member pulses and the resilient member pulses.

Abstract: Alkylation-acid end point detector for measuring the titratable acidity of the acid. It employs an electrical titration cell to generate a potential that is related to the acidity pH of the acid. It amplifies and differentiates the potential followed by amplifying the first derivative signal to produce a sharp acid end point signal without using a second derivative.