Eaton K1650 Instruction Manual

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Eaton K1650 Instruction Manual Manual pdf 17 page image

INM MTL 130-0126 Rev 13134.3 Making measurementsThe sample flow rate should be set at 100-300 ml/min.It is essential that the range setting is appropriate to the measurement being made. The rangesare as follows• Range 1: 0 to 100% Carbon Dioxide in Air• Range 2: 0 to 100% Hydrogen in Carbon Dioxide• Range 3: 90 to 100% Hydrogen in Air (or Hydrogen purity range, automaticallyselected when the instrument is powered up)4.3.1 K6050For low pressure samples (less than 25mm water gauge) turn the front panel rotary switch to“Pump” to increase the flow rate if necessary.4.4 Changing rangeFrom Range 1, press the up arrow key once for Range 2 and once again for Range 3.The down arrow key (“ ”) scrolls back through the ranges and the selected range is shown atthe bottom of the display.Using a combination of the H 2 in CO 2 /Range relay and the CO 2 in Air/Range relay it is possible tomonitor externally which of the three ranges has been selected.To acieve this, the mode setting in both the H2 in CO2 and CO2 in Air alarm settings needs to be setto range. (refer to section 5.5)Table 2 indicates the status of these relays when they are set to range.Note:- These settings are based on the relays being energised in process normal operationInstrumentmodeCondition H 2 in CO2 Relayset to rangeCO 2 in Air Relayset to rangeCO2 in Air Relayset to rangeMeasure CO 2 in air rangeselectedDe-energised Energised Always offH 2 in CO2 rangeselectedDe-energised De-energised Always offH 2 in air rangeselectedH 2 in air rangeselectedDe-energised Always offCalibration All conditions Energised Energised Always offTable 2 - Range alarm function