1535 Relative Humidity Transmitter - Novatech Controls

!4. DRIER HEATING Options:TYPE1. Indirect (heat exchanger)2. Direct Fired CombustionIf (1) is selected, the next set-up step is 7.If (2) is selected go to step 5.Figure 4.3 Set-Up Mode Selection Steps 4 to 75. PROBE REFERENCE This set-up function will appear only if 'direct fired' is selected in set-up #4. IfGAS'indirectly' is selected, this step will not appear on the set-up menu.Choose 'Ambient Air' if the drier has a fixed combustion system (fixed firing rate) where thereduction of oxygen due to combustion is constant. A refrigerated or ambient drier system willnot be necessary to condition reference gas from within the drier. The accuracy of thetransmitter is further improved if the combustion gas is a small percentage of the recirculatingdrier air.If the reduction of oxygen due to the combustion is not constant, then choose 'Process Gas'. Arefrigerated or ambient cooler will now be required. See Novatech Controls or their agent fordetails of availability.Options:1. Ambient air2. Dried process gas from within the drierIf (1) is selected the next set-up step is 6. If (2) is selected the next set-up step is 8.NOVATECH HUMIDITY TRANSMITTER Page 39