J.U.M. - Model 108 -High Sample Diluter

The Model 108 is also used to minimize negative effects due to highly concentrated interfering compounds and contamination and high water content. Additionally, so called memory effects, also called hydrocarbon hang-up due to condensation of heavy hydrocarbons as well as other condensed impurities in the sample gas can be largely prevented

General:
A total hydrocarbon analyzer which is placed downstream of the diluter will continuously draw a constant amount of room air, instrument air or zero air through the diluter with the analyzer sample pump at a required analyzer sample flow rate of 2.3 -2.8 l/min. The internal sample pump of the diluter draws the sample into the diluter. The Model 108 is equipped with a high pressure back purge cleanable, 2μm stainless steel sample filter. Downstream of the internal sample pump is the actual dilution circuit setup which is controlled by precision flow/pressure regulation to ensure a constant flow of sample through the diluter capillary. The diluter capillary is calibrated to allow a flow of one tenth (or one hundredth) of the actual sample flow drawn by the analyzer. The necessary fine adjustment for each individual analyzer is accomplished by the use of the
precision pressure regulator.

• Very short response time
• All components in contact with sample fully heated and accurately
• controlled at 190°C
• Built-In air pressure pump and heated sample pump
• 1:10 dilution rate is standard
• 1.100 dilution rate is available as an option
• Standard, permanent installed 2μ sample filter to be cleaned by back purge with
• hydrocarbon free compressed air or nitrogen
• Disposable easy to change sample filter in stead of the back purge filter optional reflects approx. 20% price advantage
• Calibration valves for zero- and span calibration. Standard manual turn switch
• and remote operation, e.g. PLC or PC
• Large oven temperature display with analog 0-5 VDC temperature output @
• 10mV/°C
• Precision sample pressure regulator on front for precise and easy calibration
• Fast response

• Stack gas hydrocarbon emissions monitoring of high concentration at wet sample conditions
• European and US-EPA Method compliance monitoring of high concentration raw source hydrocarbons
• High THC concentration monitoring of raw exhaust before a catalytic or thermal combustion device
• Catalytic converter testing
• Petrochemical plants
• Gas plants
• Co-generation facilities
• Flare gas HRVOC emissions monitoring
• Utility boilers
• Pulp mills
• Waste-to-energy facilities
• Incinerators
• Gas Turbines
• Refineries