PROCESS ANALYZER FOR HYDROGEN WITH CARBON DIOXIDE COMPENSATION, Model : 4230 SERIES, Brand : Nova

The Nova 4230 Process Hydrogen Analyzer has been specifically designed for the accurate measurement of H2 in exothermic or ' DX' gas from a furnace, generator, or other processes with high levels of H2 and CO2. The CO2 acts as an interference to the measurement of Hydrogen when using a thermal conductivity cell ( T/ C) . To correct the H2 reading for the presence of CO2, the 4230 has a separate infra red CO2 detector. Its purpose is to provide the exact amount of corrective signal for the Hydrogen reading, regardless of the furnace or generator conditions. This is a most desirable feature, especially when trying to obtain very accurate hydrogen readings. Some manufacturers attempt to compensate the H2 reading for CO2 by advising the customer to obtain a calibration gas that also contains CO2. This approach is only effective at that particular H2/ CO2 ratio. As soon as the process gas H2 level deviates from the calibration H2 level, the readings become more inaccurate. Continuous CO2 compensation is the only effective way to deal with this problem. Specifications Method of Detection Temperature-controlled TC cell for H2; separate NDIR detector for CO2 Ranges Available 0-10.0% to 0-100% H2; and 0-15.0% to 0-100% CO2 Resolution 0.1% H2 and CO2 Accuracy & Repeatability ± 1% of full scale Drift Zero and Span ± 1% of full scale per week Response Time ( T-90) 10-15 seconds Ambient Temperature Range 32 to 122° F ( 0 to 50° C) , Lower temperatures ( -5° F, -20° C) with Cold Weather Package Linearity Within 1% of full scale Size & Weight Dimensions will vary depending on enclosure style and options required Power 115 VAC, 60 Hz - 220 VAC, 50 Hz Output Options 4-20 mA into 500 ohms non-isolated standard Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs Alarms High and/ or low alarm contacts available, relay contacts SPDT 5A @ 220 VAC rating, Low flow alarm Analyzer Type H2 Analyzer Hazardous Area Rating Options General Purpose, Non-Hazardous Applications For continuous analysis of hydrogen ( H2) with active carbon dioxide ( CO2) compensation. Recommended for continuous analysis of exothermic ( DX) atmosphere gases from a generator or a furnace, and other process gases. Features High accuracy - continuous CO2 compensation of H2 reading Bright digital readout, and voltage or 4 - 20 mA outputs Long life thermal conductivity ( TC) detector with high accuracy and repeatability, cannot be burned out from loss of flow Separate NDIR CO2 detector Easy-to-maintain modular layout Built in sample pump, filters, and flowmeter Options Hi/ Low H2, CO2, low flow, and diagnostic alarms available Isolated analog, RS232, RS485, MODBUS, and Ethernet outputs available Sample conditioning systems available for removal of moisture, acidic gas, and dust Cabinet purge system available for use in hazardous areas One-step ' cal-now' button with touch screen LCD display Full automatic calibration with touch screen LCD display Cabinet coolers can be fitted to most models Sensors mounted in temperature controlled heated box to improve accuracy High temperature filters and probes Calibration On nitrogen or air for zero On a blend of 80-90% of full scale range of H2 & CO2 for span