The Analytical Process Analyzer (APT) 4000 series offers the widest available selection of advanced features in a reliable and economical instrument. The advanced features of the APT4000 analyzer guarantee complete reliability. The APT4000 continuously monitors sensor and analyzer electronics and immediately displays diagnostic information at the onset of a problem. If an error or diagnostic is found, the analyzer will indicate the appropriate error code or pictograph, blink a red LED and adjust the error current to 22 mA if desired. A manual loop-back check is available to test the integrity of the 4-20 mA output.
APT4000 has a large front display for quick recognition of process parameters and diagnostics even at a distance. Only the APT4000 employs visual feedback to reduce setup and maintenance times and to minimize errors made during calibrations. Visual feedback refers to pictograph type characters that appear on the display both to prompt and respond to operator and process changes. Pictograph type characters also appear during problem conditions to report diagnostics for easy troubleshooting. There is even a Sensoface pictograph that provides constant feedback to the operator on whether or not there is a problem with the cell. These easily learned and recognized symbols make the APT4000 an easy-to-use instrument in any language.
The APT4000 series continuously measures conductivity, resistivity and salinity in industrial processes within the power, chemical, pharmaceutical, pulp and paper, and water quality industries.
The APT4000’s NEMA 4X/IP65-rated enclosure is specifically designed to meet the measurement needs of Class I, Division 2 (non-incendive) and general-purpose areas. The analyzer can be used with Honeywell conductivity cells or electrically compatible sensors. The analyzer has a universal (20-253 V AC/DC, 45-65 Hz) power supply with one 4-20 mA output, two high/low alarm relays, a diagnostic relay, and a wash relay. Software (USP24) can be used on-line for monitoring the conductivity of purified water or water-for-injection in the pharmaceutical industry.
Each Honeywell conductivity cell comes supplied with one of four sensor factors (0.01, 0.1, 1.0, and 10). The lower cell constants are used for low conductivity water or resistivity measurements, while the higher ones are used for higher conductivity water or salinity measurements. Calibration of the cells is easy by either utilizing a factory-determined calibration factor or performing a simple one-point calibration.