Metrohm 875 KF Gas Analyzer - Manual (Page 10)

1.3 System specification
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￭ Integrated, adjustable vaporizer for liquefied gases.
￭ Heated oil filter with stainless steel filter element for analyzing used
refrigerants with chiller oil contents.
￭ Rinsing connector for removing oil residue.
￭ Precise gas measurement with mass flow controller (MFC).
￭ Automated analysis process thanks to the use of solenoid valves.
￭ Predefined analysis method with a prerinsing, gas feed and postrinsing
phase.
￭ Coulometric procedure for direct water content determination.
￭ Industrial PC and TFT panel (available as an option).
￭ All components except for the TFT panel are contained in one housing.
￭ Flexible control, user-friendly method creation and management and
extensive data management using the tiamo™ software. The opera-
tion of tiamo™ is described in the online help. Complete integration
and control of all system components via the software.
1.3 System specification
￭ The system must be operated in a fume cupboard.
￭ Maximum sample input pressure: 40 bar.
￭ Maximum vaporization temperature: 80 °C.
￭ Nitrogen is required as auxiliary gas. The molecular sieve is used for
predrying in the 875 KF Gas Analyzer. The input pressure must corre-
spond to the vapor pressure of the samples.
￭ Gas connectors for nitrogen, rinsing medium, high-pressure waste gas:
6 mm Swagelok ferrule screw connector.
￭ Sample gas connector: 1/16'' or 6 mm Swagelok ferrule screw connec-
tor.
￭ Gas type: The system is suitable for the liquefied gases and permanent
gases listed below. The gas system must be rinsed with nitrogen after
each measurement. Additional gases may be approved on request and
after testing.
– Propane, propene, butane, butene, butadiene, LPG, natural gas
– Dimethyl ether, ethylene oxide
– Chlorinated hydrocarbons: methyl chloride, ethyl chloride, vinyl
chloride
– Refrigerants: various chlorofluorocarbon (CFC), hydrofluorocar-
bon (HFC) and chlorinated hydrocarbon (CHC) compounds.
Fresh and used refrigerants with chiller oil contents.
￭ Safety specification: degree of protection IP54.