Servomex DF-310E, Руководство оператора

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Installation and Setup DF-310E 15
NOTE
For best performance at initial start or anytime the electrolyte is
changed, it is important to allow the sensor to sit with electrolyte
in it for 60 minutes
before the gas is allowed to flow through the
sensor.
PUSH
ROTATE
PULL
ROTATE
Figure 3: Quick Disconnect Fitting at Flowmeter
4.2 Sample Gas Connections
The sample gas inlet and outlet lines at the back of the instrument have
stainless steel 1/8
th
inch compression bulkhead fittings (unless equipped with
the optional ¼ inch VCR inlet). Before connecting any gas line to the
analyzer, fully install the supplied gas nut and compression ferrule on your
tubing. Connect the inlet and outlet lines to the bulkhead fittings at the back
of the analyzer. A backup wrench is not needed since anti-torque plates inside
the cabinet secure the bulkhead fittings. Do not over-tighten the fittings.
4.2.1 Purging the Analyzer
Supply the analyzer with an N
2
sample that is as low in O
2
as possible.
If the analyzer outlet is at atmospheric pressure, a regulator can be used to set
the flow rate to 1.0 standard cubic feet per hour (scfh) without danger of over-
pressurizing the sensor. The back-pressure on the instrument should not
exceed ±1.0 psig. If the installation requires long (> 6 feet) tubing runs (or
has many bends or fittings) downstream of the analyzer, the resulting back-
pressure may impose a pressure at the sensor that exceeds specifications. If
this is the case, use larger outlet tubing (1/4-inch) and/or reduce the
complexity of the outlet gas line. See page 30 for additional information on
gas sample delivery.
NOTE
Over-pressurizing the sensor can result in permanent damage to
the sensor. Limit the backpressure to the analyzer to ±1 psig.
NOTE
Allow gas with very little oxygen to flow through the analyzer for
approximately 60 minutes before powering up.