Envent Engineering Ltd. Page 25 Revision 2.4
11. Apply power to the analyzer. The display will illuminate and the H
2
S sensing tape
will advance for a few seconds.
12. Press the menu button until mV is displayed. Check that the mV reading is 1000
mV (± 100 mV).
There are two mV values shown in the display, the "mV Zero" and the "mV" Values.
Check for the "mV" Values.
For the SDS models, check for "Sensor 1 mV" and "Sensor 2 mV".
13. Make sure the sample inlet valve, sample sweep valve, and pressure regulator are
completely closed. The pressure regulator is completely closed when the knob
handle is counter clock wise.
14. Turn on the sample gas flow to the conditioning sample system and then open the
sample inlet valve.
15. Open the sweep valve slightly and adjust pressure regulator to 15 psig and the
flow meter to 2.0.
16. Allow twenty minutes for the analyzer to stabilize. The analyzer calibration can be
verified if calibration gas is available. If no calibration gas is available, the analyzer
may be operated using the factory calibration settings until calibration gas is
available.
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