User's Manual for CM6G - Yokogawa

10-510.2.5 Dehumidifier (For Steel Mill Use)If the naphthalene is too much contained in the sample gas, in spite of the gas gone throughthe washing bubbler there might happen the case such naphthalene can hardly be cleaned andcontaminated in the state of being crystallized in the pipings inside the dehumidifier. If such casehappen, stop the sample gas flow, and remove 4 pipes at the top of the dehumidifier and introduce thehot water of 70°C to 80°C, the naphthalene is dissolved into the hot water and no contamination left.FULFLO FILTERPRESSURE REDUCING VALVE(ORIFICE ASSEMBLY)DENSITY METERCIRCUIT BREAKERPOWERCOOLPOWER LAMPCOOL LAMPTERMINAL BLOCKF11-7.aiDRAIN(TO PRESSURE REGULATING POT)Figure 10.6 Dehumidifier10.2.6 Density MeterIt is recommended to replace the O-ring of the GD300S detector every 2 or 3 years and wash thesensor if necessary. Consult to our service for washing the sensor.IM 11R02A01-02E