Teledyne 306WA - Analog trace oxygen analyzer - Manual (Page 23)

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TELEDYNE ELECTRONIC TECHNOLOGIES
Analytical Instruments
2) Adjust the valve so that the flowmeter float is centered in the
flow rate reference indicator.
CAUTION: Open the throttle valve carefully. Excessive flow rate
may cause water in the humidifier column to be carried
into the detector cell. This can cause erratic readings
and may require disassembly, cleaning, and refilling of
the sensor
.
3) The flowmeter indicator has been factory set to a flow rate of
150 cc/min 150 cc/min 150 cc/min 150 cc/min 150 cc/min. for the specified sample gas.
CAUTION: Excessive flow rate may cause water in the humidifier
to be carried to the flowmeter causing moisture to
accumulate. This can cause the ball to stick in the
flowmeter. To remove moisture, remove the flowmeter
and allow to air or blow dry. Refer to the detailed in-
structions in Figure 10 for removal and installation of
the column.
4.5 4.5 4.5 4.5 4.5 Humidity Control Humidity Control Humidity Control Humidity Control Humidity Control
The humidity control is located on the front panel of the control unit,
and is adjusted to maintain a constant electrolyte level in the detector cell.
In effect, the control governs the humidity of the sample which is directed
to the cell.
1) At start-up, the humidity control knob should be set to 30 30 30 30 30. Note
the cell electrolyte level as a reference. Approximately 3/32" of
the bottom edge of the screen assembly should be immersed in
the electrolyte.
2) Operate the analyzer for 24 hours and compare the electrolyte
level with the “reference” established in Step 1. If the level is
lower than the reference, adjust the knob a few divisions
clockwise; if higher, adjust a few divisions counterclockwise.
3) Operate another 24 hours and repeat Step 2.
4) Continue adjustments at ever-increasing intervals until a constant
electrolyte level is attained in the cell.
Once the analyzer is suitably located, all components serviced and
installed, and sample and electrical connections made, the instrument is
ready for operation.