Cte Chem Tech Equipment Corp.

Other

Cte Chem Tec Equipment, Inc.

Cte Chem Tech Equipment Co., Inc.

Chem Tech Equipment Corp.

Chem Tec Equipment Corp.

Cte Chem Tec Equipment Co. Inc.

Craig S Custer

William A Nolan

A method is disclosed calibrating a volumetric fluid flow sensor having a pole magnet armature in which a direction of reciprocation of the armature is co-linear with a magnetic axis thereof and in which there is provide a magnetic field sensor for sensing the position and strength of the magnetic axis of the magnetic armature. A path of fluid flow is defined which includes an inlet channel for contaning the reciprocation of the magnetic armature and having an outlet channel radially oriented relative to the input channel and in fluid communication with the inlet channel. A calibration magnet, located co-axially with the armature magnet provides a repulsive force to the armature magnet which, in co-action with the fluid force of the measured volumetric fluid flow provided an adjustable point of equilibrium of the armature and thereby an adjustable actuation point thereof. Different ranges of sensitivity are achieved through adjusting certain variables to thereby change the point of actuation between the magnetic and fluid forces.

Method of calibrating a volumetric fluid flow sensor

A volumetric fluid flow sensing system includes a pole magnet armature in which the direction of reciprocation of the armature is co-linear with its magnetic axis and, includes a magnetic field sensor within magnetic communication with the magnetic axis for monitoring changes in the magnetic field strength of the magnetic axis. The system includes a housing which defines a path of fluid flow, including an inlet channel having the magnetic armature axially positioned therein, and having an outlet channel radially oriented relative to the axis of the input channel and in fluid communication with the input channel. Further, there is employed an axially positioned calibration spring having an axis in spring force relationship to the magnetic axis of the armature and located co-linearly with the magnetic axis of the armature, to define a point of equilibrium between the spring constant force of the spring and against the armature and that fluid force applied against an inlet channel side of the armature by the volumetric fluid flow to be measured by the fluid flow sensor.

Volumetric fluid flow sensor

A method for monitoring the existence or non-existence of a given range of volumetric fluid flows through an input channel by correlating the same to a range of sensitivity of a magnetic sensor to a pole of a magnetic armature in a valve housing. Through modification of the geometry of a cross-section of an interface between an input channel containing said armature and an output channel, the range of fluid flows to which the armature and, thereby, the magnetic sensor will respond may be calibrated both upwardly and downwardly.

Method for monitoring ranges of volumetric fluid flow

Disclosed is a valve having a body having an inlet channel, an outlet channel in fluid communication with the inlet channel, and a flow-monitoring region situated medially between the inlet and outlet channels. Further provided within the body is a secondary channel having a first end and a second end, the first end in fluid communication with the inlet side of the flow-monitoring region and the second end extending to the outside of the body. The first end of the secondary channel is provided with an area of constriction proximal to the inlet side of the flow-monitoring region. Within the secondary channel is a piston slideably moveably situated. The piston is a pole magnet having a magnetic axis substantially co-linear with the axis of the secondary channel. The diameter of the piston is greater than the diameter of the constriction. Secured within the second end of the secondary channel is a plug. This plug is a pole magnet having a magnetic axis in alignment with the axis of the secondary channel. The polarity of the magnetic axis is opposite to the polarity of the magnetic axis of the piston, thereby causing magnetic repulsion between the plug and the piston in the direction of the first end of the secondary channel and of the constriction of the secondary channel. Further provided is a by-pass channel having an upper end and a lower end, the upper end in fluid communication with the secondary channel in an area above the location of the piston and below the location of the plug. The lower end of the by-pass channel is in fluid communication with the outlet side of the flow-monitoring region.

Attitude-insensitive, by-pass sensor

Disclosed is a system for sensing the level of a body of liquid within a container. The system includes a shaft secured parallel to a vertical axis of said container, said shaft having a magnetically responsive digital switch. Further provided is a toroidally-shaped reference element situated circumferentially about the shaft and secured at fixed level thereto, the reference element having a magnetic axis which is co-directional with the axis of the shaft. Also provided is a toroidally-shaped measuring sensing element also situated circumferentially about said shaft and vertically above said reference element but without securement thereto, said sensing element having a magnetic axis co-directional with the axis of said shaft and having a polarity of the magnetic axis which is repulsive in relationship to the magnetic axis of the reference element. The measuring element may possess a circumferential interior formed of a material having a negative buoyancy relative to the specific gravity of the level of the liquid to be measured. The reference and sensing elements will repel each other as long as they are within the magnetic proximity of each other, thusly causing the sensing element to float above the level of the reference element. The relative buoyancy of said sensing element will increase as a function of the level of the body of liquid of said sensing element, thereby causing the distance between said sensing and reference elements to change relative to changes in the level of the body of liquid, which changes are monitored by the magnetic actuation of the digital switches.

Level sensing system

A liquid level sensing means for use in a tank or the like, adapted to hold a liquid which is partially withdrawn and/or replenished from time-to-time. Disposed within the liquid is a buoyant, upright, hollow reed switch-like float element having a longitudinal axis parallel with the direction of movement of the liquid level within the tank. The switch element is adapted to float upon the surface of the liquid whose level is to be sensed. It is provided with an upper reed and a lower reed, each in alignment with the longitudinal axis of the float element. The upper reed is rigidly secured to the upper end of an envelope of the float element, while the lower reed thereof is spring biasly secured to the lower end of the float element envelope. At a location medially between the upper and lower ends of the float element envelope, there exists an area of overlap between the unsecured ends of the upper and lower reeds respectively. At the upper end of the reed switch envelope is provided a calibrating magnet which is a pole magnet having a magnetic axis substantially in alignment with the longitudinal axis of the envelope of the float element. It is secured proximally to the top of the envelope and within magnetic proximity to the upper reed. The calibrating magnet will induce in the upper reed a magnetic axis and field opposite to the magnetic axis and field of the calibrating magnet. This will in turn induce a magnetic axis and field in the lower reed opposite to that of the upper reed, but the same in direction to that of the calibrating magnet.

Level sensing system with latching device

Disclosed is a non-position sensitive, non-memory condition sensitive, automatic reset flow sensor having a solid housing having an inlet port and an outlet port connected by an axial bore through the center of the sensor housing. An armature is free to move axially within the bore within a range of motion defined by two pairs of detents, the detents extending radially toward the center axis of the bore. The magnetic axis of the compensating magnet is such as to normally oppose the magnetic axis of the armature and, thereby, to apply a magnetic repulsion against the armature to bias the armature toward the inlet port of the sensor housing. The force of magnetic repulsion between the compensating magnet and the armature is, at all times, greater than the force of gravity to, thusly insure that the repulsive force of the compensating magnet will be capable of returning the armature to its original position proximal to the inlet port detents, after the flow condition causing movement of the armature toward the outlet port detents has abated.

Attitude insensitive automatic reset flow sensor

A fluid control device includes a reciprocating valve comprising a ferromagnetic armature capable of receiving an axis of magnetic polarity corresponding to its axis of reciprocation, the axis generally also corresponding to the longitudinal center of a chamber within said housing, said chamber having a greater radius than the radius of the valve which moves within the chamber. The valve also exhibits a flow-responsive rear radial end face located within a region of communication between said inlet and outlet passages. The valve further has a front end face capable of closing the fluid outlet passage of the device. Further provided is a bias and calibration means located in the housing and disposed co-linearly and distal-proximately to the valve, near the rear radial end face thereof, opposite to the flow-responsive rear radial end of the valve. The bias and calibration means possesses an axis of magnetic polarity substantially co-linear with the magnetic axis of the valve wherein the magnetic properties or polarities of the valve and of the bias means are in the nature of an attractive mode there between. The flow control device also includes a means for changing the axial distal-proximate position of the bias means relative to the valve to thereby calibrate the degree of attraction between the bias means and the valve and, also, to define the geometry of that part of the region of inlet-outlet communication that passes between the flow-responsive rear radial end face of the valve and the bias means.

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Pompano Beach, FL, United States of America

Craig S Custer