Servomex DF-130E, Operator'S Manual

Page: 19 / 88

Analyzer Start-Up Procedure DF-150E 15
 The analog output is proportional to the oxygen reading of the instrument.
If you have a Three Range Analyzer the output will be scaled to the
“selected” range.
 The minimum impedance of the load is 10K Ohm.
5.4 Powering Up the Analyzer
1. Verify the analyzer is set to the desired 110 VAC or 220 VAC selection by
checking the voltage indication on the rear panel. NOTE: A power cord is
not included with analyzers ordered for 220 VAC operation. The power is
supplied through a standard IEC 60320 C13 connector.
2. For concentrations below 100 ppm, it is useful to let the analyzer “purge”
by letting gas flow through it for about five minutes before the power and
sensor are turned on.
3. A three range analyzer should be set to the highest concentration range.
4. Be sure the Sensor Off switch is not pushed in (OFF). See Figure 4
5. Turn the analyzer on using the power switch. See Figure 5
6. Allow several minutes for the analyzer to come “on range”.
7. Progressively switch to a lower range as the reading allows.
Figure 4: Sensor Off Switch