1633 Combustion Controller Manual - Novatech Controls

3.2B INSTALLING A 1234 OXYGEN SENSORMounting - Screw the 1234 sensor to a wall or similar surface with the piping connections at the bottom.6.8"173.000.8"INLET 1/4" TUBESAMPLE IN20.0010"250.001234 OXYGEN SENSOR2.7"56.00LABEL1"25.00NOVATECHCONTROLSEXHAUST30.001.2"CABLEEXHAUST 1/4" NPT1234 Sensor Mounting DimensionsSample Piping - Connect the gas sample piping to the “sample in” port. If the process, boiler, kiln or furnace has apositive pressure, no suction will be required. If the sample is under a negative pressure, connect a pump to the “inlet”port as shown below. The flow rate should be within the range of 1 to 5 litres / minute (120 to 600 scfm).FlueGasUpward slopingsample line 3/8”stainless steel1/4" Stainless Steel TubeSamplingProbe1234SensorDryProcessGas1234SensorOptional vent toatmospherreVent or returnto processFlowmeterOptional returnto flue3.3 INSTALLING THE AUXILIARY THERMOCOUPLEWeld a 1/2 inch BSP mounting socket to the flue within about 300 mm (12”), and upstream of the oxygen probe. Thethermocouple should be of similar length to the oxygen probe to prevent flue temperature distribution errors.3.4 SHIELD CONNECTIONSAll external wiring to the 1633 analyser should be shielded. Do not connect shields at the field end. Simply clip offand insulate. An extra terminal strip may be required to connect all shields together. This should be supplied by theinstaller.August 200922 1633 Combustion Controller