Abstract: A system and method for portable instrumentation is proposed, comprising a server computer and a portable instrument that is wirelessly connectable to the server computer. The portable instrument comprises sensors for performing respective physical or electrochemical measurements, and a hand-held computer that is operably connectable to the sensors. The hand-held computer is configured to record and transmit the measurements to the server computer. The hand-held computer evaluates a real-time wireless connection quality between the portable instrument and the server computer. When the wireless connection quality shows a declining trend, the hand-held computer determines a spatial boundary where the portable instrument reaches a dead zone with wireless connection quality below a predetermined threshold. The hand-held computer then requests pre-recorded data from the server computer to be forwarded to the portable instrument before the portable instrument reaches the spatial boundary.

Abstract: A system and method for portable instrumentation is proposed, comprising a server computer and a portable instrument that is wirelessly connectable to the server computer. The portable instrument comprises sensors for performing respective physical or electrochemical measurements, and a hand-held computer that is operably connectable to the sensors. The hand-held computer is configured to record and transmit the measurements to the server computer. The hand-held computer evaluates a real-time wireless connection quality between the portable instrument and the server computer. When the wireless connection quality shows a declining trend, the hand-held computer determines a spatial boundary where the portable instrument reaches a dead zone with wireless connection quality below a predetermined threshold. The hand-held computer then requests pre-recorded data from the server computer to be forwarded to the portable instrument before the portable instrument reaches the spatial boundary.

Abstract: The Applicant's invention comprises an apparatus and method for determining the amount of one or more components in a pulping liquor. At a first electrode, a varying voltage is supplied in a voltage range including the half-wave potential of each component of a liquor to be measured, and accounting for variations in the half-wave potential caused by changing process parameters. At a second electrode, which is roughly ⅓ to ¼ the size of the first electrode, the derivative of current intensity is monitored near the known half-wave potential for the various liquor components. Using curve-fitting means, the derivative of current intensity and selected other process condition data is used to determine concentrations of the various liquor components.

Abstract: A apparatus and method for in-situ treatment of electrodes in liquid environments in which a solution supply orifice is located near an electrode to be cleaned, and when cleaning is desired, a treatment solution from the solution supply orifice is directed against the electrode or electrodes. A cleaning baffle may be placed over the electrodes to better direct the treatment solution. The electrodes may be cleaned of the treatment solution by directing a flow of gas or a second treatment solution against the electrodes, subsequent use of the first treatment solution.