GAS ANALYZERPRINCIPLE OF OPERATION Thermal conductivity manufactured by Thermco. RANGE The range of the analyzer will be the same as the gas mixer, except for the 0 -30% CO2in argon gas mixer, which has analyzer range of 0 - 50% CO2in argon. READ OUT Analog versions, 4.5 inch (11.4 cm) meter, nonlinear direct reading scale. The analog readout is only available in CO2argon and oxygen/argon ranges. Digital versions, resolution 0.1%, direct readout in gas percent, built-in microprocessor-based linearity. SIGNAL OUTPUT 4-20 mA, isolated. This signal is only available on digital models. NOTICE CONCERNING SUPPLY SYSTEMS Because these gas mixers operate by intermittently filling a surge tank in the gas mixer, the gas mixer will demand the supply gases at full gas mixer capacity for some period of time, even if the mixed gas demand is small. For this reason, bulk gas supply systems (not portable liquid cylinders) should be used for the major gas, and in some circumstances, the minor gas. Please contact the Thermco sales engineer for guidance. WARNING Improper use of this product can cause death, serious injury, or property damage. Personnel dealing with this equipment should read and understand warning labels and instruction manuals provided by Thermco. Only personnel familiar with industrial gases should attempt to install or service this equipment. Gases from high-pressure cylinders must be reduced to the specified pressure before entering the gas mixing system to prevent the possibility of equipment damage and personal injury. Only use oxygen in gas mixers specifically designed for oxygen service. Gas mixers not designed for oxygen service can not be converted to oxygen service. Flammable or corrosive gases should not enter these gas-mixing systems. DOCUMENTATION Each gas mixer is supplied with two instruction manuals, which include complete wiring and flow diagrams. A complete data sheet is prepared for each gas mixer specifying major parts of the gas mixer and all pressure settings and orifices. A copy of the instruction manual is kept on file at Thermco, and engineering assistance is provided if required. Thermco has been providing service on gas mixers since 1964. ORDERING Thermco gas mixers are available through many local industrial gas suppliers. Thermco gas mixers may also be ordered directly from the factory. Before ordering please generate the proper model number by using the system on the rear page of this literature. It is especially important to order the correct pressure conditions for the application. If there are questions, please contact the Thermco sales engineer. |