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| AC200 : Industrial 2-Electrode Conductivity Cells with Rapid Temperature Response |
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Safe Operation and High Process Resistance The AC200 series of cells provide highly accurate and reliable inline conductivity measurements up to 20 bar (290 psi) and 200°C (392°F). Typical applications are power plants, ionexchangers, reverse osmosis and chip cleaning. AC210 cells are available as screw-in, flow-through, immersion and submersible types to permit installation in the majority of industrial applications. The series comprises two essential variants: AC210 with electrodes of high-density graphite (for 0.1 and 1.0 cell constants); and AC220 stainless steel (for 0.01 and 0.1 cell constants). A range of cell constants (k values) is provided to measure a wide range of process media from 10,000 µS cm–1 down to 0.055 µS cm–1 (or 18.2 M .cm). All AC200 cells are manufactured to highly exacting standards. Traceable certificates of cell constant accuracy can be supplied on request. Simple Maintenance Easy-to-Clean Cells Some ultra-pure water processes can contain contaminants that periodically could coat electrodes and reduce measurement accuracy. This can occur during commissioning of new plant or with on-demand power plant where the process does not run continually. To make maintenance easier all AC220 cells have a removable outer sheath making access for cleaning very simple. Flexibility of Cable Connection A choice of sensor cable interconnection methods is provided in order to suit a wide variety of needs. The detachable cable connector ensures easy installation and eliminates the possibility of making a wrong connection or tangling cables. For user flexibility, a terminal head version enables on-site adjustment of cable length and cell stocking, while direct fixed integral cable mounting is provided for the simplest, problemfree connection. Rapid Integral Temperature Sensor Temperature compensation is critical for conductivity measurement, particularly where a wide variation of temperatures is expected. In addition, detection of cooling water failure can be critical on high temperature sampled systems in the modern power plant. All AC220 stainless steel cells are equipped with a very fast temperature compensator with T90 of under 30s. This enables accurate temperature compensation and use as a separate temperature measurement for output from the analyzer. Easy Installation and Operation Insertion, Flow, Immersion and Submersion The AC200 is designed to make installation easy and operation simple. These sensors have been designed for mounting in-line, immersed in tanks or directly submerged. The comprehensive range easily meets actual process needs AC210 Graphite/Epoxy Cells AC210 sensors are constructed of high-density graphite electrodes mounted in loaded epoxy resin. This provides excellent polarisation resistance at higher conductivities and exceptional chemical resistance. AC211 Screw-in Insertion Cells The AC211 sensor is designed to be screwed directly in-line and is rated to 100°C (212°F) and 7 bar (100 psi). The process connection is a G 1 in. (BSP) or NPT male thread. IP68 cable connection options include fixed cable, terminal head and a detachable connector. AC212 Flow-through Cell The AC212 cell is an integral, flow-through design reducing outlay and easing installation in small-bore lines. The sensor is suitable for operation to 100°C (212°F) and 7 bar (100 psi). Process connections are Rp 1/2 in. (BSP parallel) and NPT female threads. Connection of cable is achieved via the integrated IP67 terminal head. AC213 Immersion and Submersible Cells Installation in open channels and tanks is easily achieved with the AC213 polypropylene immersion (dip) system in either 1m (3.3 ft) or 2m (6.6 ft) length. Actual dip length is adjustable on site enabling the system to match actual process needs. Longer dip lengths are accommodated with the submersible version mounted in a dip tube provided by the user. IP68 protection of the integral, potted-in cable makes it perfectly suited for direct submersion in open channels and bore holes. AC220 Stainless Steel Cells The AC220 series comprises dedicated screw-in cells that can be inserted directly in-line or screwed into a flow-chamber. AC220 steel cells are rated to 20 bar (290 psi) and 200°C (392°F) when using the terminal head version with ABB high temperature cable. All other types are suitable for operation to 110°C (230°F).
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| 4600 Series : Dissolved Oxygen Analyzers |
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The 4640 and 4645 Dissolved Oxygen (D.O.)
transmitters and associated sensors have been designed for continuous
monitoring and control in a wide range of applications including, aeration
in sewage treatment and river/effluent monitoring. The The 4640/42 model is a wall- or pipe-mounted instrument and the 4645/47 model is a panel-mounted, DIN sized instrument. Both instruments have a single programmable D.O. input channel, and a single temperature input channel. The sample temperature is sensed by a Pt100 resistance thermometer. Models 4642 and 4647 incorporate a water wash facility for system cleaning. During the water wash cycle, the Alarm 1 status and the retransmission value are held in their pre-cycle condition. Instrument operation and programming is via four tactile membrane switches located on the front panel. Programmed functions are protected from unauthorized alteration by a fivedigit security code.
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