An apparatus includes a chamber, a valve coupled to the chamber, a pump coupled to the chamber, a control circuit coupled to the pump, and a lever coupled to the valve, the pump, and the control circuit. Operation of the valve and the pump is controlled based on a position of the lever.

An apparatus includes a chamber, a valve coupled to the chamber, a pump coupled to the chamber, a control circuit coupled to the pump, and a lever coupled to the valve, the pump, and the control circuit. Operation of the valve and the pump is controlled based on a position of the lever.

A pressure sensor and its use for visually determining whether a preselected pressure threshold has been achieved, for example during high pressure processing treatment of a foodstuff. The pressure sensor includes a contained color-changing system having a dye, a developer, and a solvent; upon achievement of the preselected pressure threshold, the dye and the developer interact, resulting in a visible color change. Further, the visible color change can be retained upon a decrease in pressure and upon an increase in temperature, thereby effectively recording the achievement of the preselected pressure threshold during the high pressure processing treatment.

A pressure sensor and its use for visually determining whether a preselected pressure threshold has been achieved, for example during high pressure processing treatment of a foodstuff. The pressure sensor includes a contained color-changing system having a dye, a developer, and a solvent; upon achievement of the preselected pressure threshold, the dye and the developer interact, resulting in a visible color change. Further, the visible color change can be retained upon a decrease in pressure and upon an increase in temperature, thereby effectively recording the achievement of the preselected pressure threshold during the high pressure processing treatment.

A gauge system and method for monitoring well pressure at temperatures in excess of 300 C. used in permanent monitoring of oil and gas wellbores. The gauge system includes an analog output transducer and a long cable which is an extruded mineral insulated multi-core cable with a seam welded corrosion resistant metal outer sheath. The transducer is enclosed in a pressure tight corrosion resistant housing and the housing is pressure sealed to the metal outer sheath. The method includes applying signal conditioning and processing to the measurements to compensate for characteristics of the transducer, the cable and the environment and thereby provide continuous monitoring of the wellbore.

The disclosed technology includes a transducer assembly having a first transducer element. The transducer assembly includes a first filter element adjacent to least of portion of the first transducer element such that a first cavity is defined between the first filter element and the first transducer element. The first filter element includes a plurality of machined passageways in communication with the first cavity. The transducer assembly also includes an inlet passage having a first end in communication with a first external portion of the transducer assembly and a second end in communication with the plurality of machined passageways.

Methods and systems are described for operating an intra-oral imaging sensor that includes a housing, an image sensing component at least partially housed within the housing, and a temperature sensor. An output of the temperature indicative of a sensed temperature is received and evaluated to determine whether the intra-oral imaging sensor is positioned in the mouth of the patient. The determination of whether the temperature sensor may be based on one or more determined conditions including whether a current temperature exceeds a threshold, whether a first derivative of the sensed temperature exceeds a rate-of-change threshold, and whether a second derivative of the sensed temperature exceeds a temperature acceleration threshold. In some implementations, the operation of the intra-oral imaging sensor is automatically adjusted in response to a determination that the sensor has been placed inside the mouth of a patient.

Methods and systems are described for operating an intra-oral imaging sensor that includes a housing, an image sensing component at least partially housed within the housing, and a temperature sensor. An output of the temperature indicative of a sensed temperature is received and evaluated to determine whether the intra-oral imaging sensor is positioned in the mouth of the patient. The determination of whether the temperature sensor may be based on one or more determined conditions including whether a current temperature exceeds a threshold, whether a first derivative of the sensed temperature exceeds a rate-of-change threshold, and whether a second derivative of the sensed temperature exceeds a temperature acceleration threshold. In some implementations, the operation of the intra-oral imaging sensor is automatically adjusted in response to a determination that the sensor has been placed inside the mouth of a patient.

The present invention relates to a method of determining the pressure or of a parameter correlated with the pressure in an extracorporeal circuit of a blood treatment apparatus, in particular of a dialyzer, wherein at least one blood pump which is driven by at least one motor is located in the blood circuit, wherein the motor current of the named motor and the blood flow or a parameter correlated therewith is measured for determining the pressure or the parameter correlated therewith and wherein the pressure p or the parameter correlated therewith is calculated from the measured values.

The present invention relates to a method of determining the pressure or of a parameter correlated with the pressure in an extracorporeal circuit of a blood treatment apparatus, in particular of a dialyzer, wherein at least one blood pump which is driven by at least one motor is located in the blood circuit, wherein the motor current of the named motor and the blood flow or a parameter correlated therewith is measured for determining the pressure or the parameter correlated therewith and wherein the pressure p or the parameter correlated therewith is calculated from the measured values.