OCX 8800 Explosion Proof Oxygen/Combustibles Transmitter

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Both oxygen and combustibles measurements in a single, easy-to-install transmitter design Integral or remote-mounted electronics options Explosion-proof and weather-proof ratings (ATEX certification for European installations) New universal power supply Fully field-repairable HART®, AMS/Plantweb® compatible Simplified installation - No electronics box, probe cable or conduit - Universal power supply provides automatic line voltage selection - Adaptable to any oxygen/combustibles installation

Enhanced Design of the Oxygen/Combustibles Transmitter for Combustion Flue Gas Analysis Emerson has taken the proven performance of the Rosemount Analytical OCX 4400 and added a new combustibles sensor design and sensor housing upgrades to enhance the reliability of these measurements. The new sensor housing along with the new electronics design makes the OCX 8800 the most dependable oxygen/combustibles transmitter on the market and is so complete that it truly is an entirely new instrument. The OCX 8800 takes an easier, original rugged design of the OCX 4400 and adds a more stable sensor, electronics and software package. The time-tested and worldrenowned zirconium oxide sensor used in the Oxymitter™ is still the basis for the oxygen measurement. This, coupled with the new patented combustibles sensor can detect oxygen and combustibles concentrations in flue gases with temperatures up to 2600°F (1427°C). Typical applications include: refinery process heaters petrochemical reactor furnaces small package hot water and steam boilers inert process atmospheres gas, oil and some coal boilers Two separate 4-20 mA signals are used as outputs for this transmitter. The two independent 4-20mA signals are used for the oxygen measurement and combustibles measurement. They are fully field-scalable to each processes requirement. The OCX comes with a NEMA 4 rating, but can be configured for hazardous area locations. The hazardous area ratings are CSA/FM Class 1, Zone 1 for North America and ATEX II 2 G EExd for the European community. The OCX also has Plantweb® capability with the HART protocol accessible via a Model 375 Handheld Communicator or through a PC-based system using AMS software. Emerson Process Management's Plantweb field-based architecture allows technicians to view all diagnostic and operational parameters from any location where an on-line PC is running with AMS. This reduces both commissioning/start-up time as well as down-time due to trouble shooting the analyzer. The new vacuum fluorescent display is easier to see than an LCD and also allows for easy set-up and diagnostics without a Model 375 Communicator. The OCX 8800 also has a configurable relay output for alarms. The sensors are close-coupled to the process for minimal sample handling requirements. An eductor draws a sample past the filter in the sample block and past the sensors then returns it to the process. The sample block filter is easily maintained and accessible right at the OCX flange. Optional in situ filters and sample tube blow back are available for processes with particulate. Dilution air is added in the combustible sensor chamber to maintain a true combustibles measurement even in the absence of oxygen in the process. This feature allows measurements to be made while certain upset conditions exist such as burner fouling, process tube leaks, major variations in fuel BTU values and loss of flame.  New hardware design includes:      New software features Include:  Vacuum fluorescence Local Operator Interface (LOI)      LOI safety lock-out  New combustibles chamber includes:      Improved sensor and sample block temperature stabilization    - Rugged sulfur-resistant catalytic bead sensor (patented design)      Line voltage diagnostics    - Improved temperature control      Calibration check feature    - Improved heater design      Calibration abort feature  Optional in-situ filter for high-particulate applications*      Easy-to-follow menu tree  Cold junction compensation in sensor housing reduces wiring costs      Backward compatibility to upgrade your existing OCX 4400  Completely redesigned electronic card stack      Line voltage filter     THE OCX 8800 TRANSMITTER IS COMPLETELY FIELD-REPAIRABLE The OCX 8800 is fully field-repairable. The probe's design provides convenient access to internal probe components and electronics so technicians can service the unit in-house. The sensing cell and heater/thermocouple are fully field-replaceable. We offer sample probes in different materials and lengths up to 9 feet for flue gas temperatures up to 2600°F (1427°C). The electronics can be attached to the sensor housing or separate to provide a convenient location for the electronics and operator interface for integral mounted installations. We have built the oxygen/combustibles measurement around the time-proven Oxymitter oxygen cell and added a combustibles measurement with dilution air. This means the combustibles measurement is valid with or without oxygen in the flue gas stream and is extremely useful in reducing conditions. This situation is ideal for optimization of your fuel/air ratio or indication of your combustion process from a safety standpoint. Features     Benefits HART communications     All information from analyzer is updated constantly and provided to the operator or technician. Low cost to maintain Rapid, accurate and reliable measurement of excess oxygen and combustibles     Provides inputs for significant fuel savings which normally pay for the analyzer in less than one year Integrated sensors and electronics simplifies installation (optional)     Eliminates cost of mounting separate electronics as well as cabling and conduit between sensors and electronics Temperature-controlled combustible sensor     Minimize drift and better sensitivity Field-replaceable sensors, temperature elements and heaters     Ease-of-maintenance Suitable for process temperatures up to 2600°F (1427°C)     Suitable for use in most combustion applications Probe material of construction 316 LSS, Inconel 600 and ceramic     High resistance to corrosion and high temperatures Optional in situ filter for high particulate installation     Improved sample handling – block temperature control New robust combustibles sensor     Longer life and higher resistance to sulphur Automatic line voltage selections     Automatically selects from 90 to 240 VAC and 50/60 Hz. without configuration or set-up