Abstract: A retaining clamp for use with a combination valve and conductivity cell assembly is formed from two identical clamp halves which, when closed upon the valve and conductivity cell assembly, tightly connects the valve nipple and operating safety nut of the assembly in fixed operating relationship to insure proper reciprocal movement of the valve sleeve.

Abstract: A cell body having a pair of electrodes insulated from each other and adapted for direct immersion and use in commercial, laboratory, or industrial fluids or process streams, the cell being usable at temperatures below freezing and above the boiling point of water. The cell includes an insulated ultra pure antimony electrode and an insulated electrode of noble metal, the noble metal of the one electrode being immersed in the process stream as is the pure antimony electrode. The cell provides a self-contained solid state unit with the two electrodes adapted to measure pH in fluids or process streams containing solid mineral or ore particles, in acid, neutral or basic solutions of a wide range of temperatures and pressures, including vacuum applications and this system requires no external or internal reference or standard electrodes.

Abstract: A simplified clean conductivity or pH cell assembly comprising a solid plastic cell body and a test fluid conduit comprising a clean pipe fitting, affixed to the forward face of the solid body by means of an external clamp and a seal such as an O-ring. The clean pipe fitting is preferably formed of stainless steel and the internal surface thereof which comes in contact with the test fluid is plane and has no crevices or the like which could cause contamination of the fluid.Pencil shaped electrodes are fixed in said solid body and extend therefrom into the test fluid in the conduit to be measured. The face of the solid body which is in contact with the test fluid is plane with no cavities, crevices, holes, projections, restricted channels, or the like. The electrodes for conductivity or pH measurement are cleanly formed of glass or stainless steel or other suitable material and have no surfaces which might result in contamination or the collection therein of dirt and the like.

Abstract: A simplified system for practical use in the measurement of specific ion concentrations. A probe for introduction into a fluid stream to measure the ion concentration thereof and said probe comprising an ion sensitive electrode for immersion in a fluid stream in combination with an annular elongated electrode having a noble metal, such as one of the platinum group of metals, on an end surface thereof for immersion in the fluid stream. The combination of the ion sensitive electrode, and the annular elongated electrode having an end thereof with the noble metal is placed in the fluid stream to be measured and is electrically connected to a measurement and/or indicating instruments.

Abstract: A strain meter includes first and second blocks clamped to a rotating shaft with a linear variable differential transformer (LVDT) rigidly affixed to the first block and a displacement arm rigidly affixed to the second block. A LVDT core is attached to one end of the displacement arm and disposed to be movable without contact through the center of the LVDT. A flexible cable is connected between the displacement arm and the LVDT to control the radial position of the LVDT core. A vertical stabilizing bar is connected between the blocks and includes a cutout section adjacent the second block to allow for necessary flexibility for the second block to follow shaft motion. Information signals generated by the LVDT are telemetered off the shaft to a receiver.

Abstract: A multichannel salinity meter combines a semi-squarewave signal with a peak actuated detector to develop a salinity signal proportional to conductivity. Each salinity channel includes a separate presettable alarm level and alarm indicators provided by a blinking lamp at the salinity module, local and remote bells and a remote lamp. a bell cutout switch is provided to optionally silence the local and remote bell indicators. Each salinity channel provides a dump signal which may be used to control a dump valve whereby any alarm condition causes dumping of the water in the alarm channel. A test signal available to each salinity channel provides the instrument with a test mode.

Abstract: An electrical circuit for shaft torque measuring systems of the type having a transducer producing an electrical signal representing shaft torque and a brush and slip ring assembly providing an output connection for the electrical shaft torque signal includes an operational amplifier having the electrical shaft torque signal connected across an inverting input terminal and an output terminal with a capacitor providing negative feedback between the inverting input and output terminal and a resistor connected in series with the inverting input terminal to form with the capacitor a low pass filter such that resistance variations and circuit interruptions in the electrical shaft torque signal producing circuit do not adversely effect the output signal.

Abstract: A conductivity cell for measuring the conductivity of a liquid comprising a pair of spaced apart electrodes insulated from each other. The proper spacing of the electrodes is provided by a washer formed of insulating material and it is strong, rigid and highly stable chemically and mechanically and is substantially unaffected by wide temperature variations. A single electric conducting element extends through the cell and at one end is electrically fixed to one of the electrodes. The single electric conducting element is adjustable to maintain the two electrodes and insulating washer in proper position. A protective and insulating shield is provided for detachable connection to the conductivity cell to protect the electrodes.