Servomex DF-130E, Operator'S Manual

Page: 21 / 88

Standard Features DF-150E 17
6 Standard Features
The DF Series analyzers use a patented, non-depleting, coulometric sensor to
detect oxygen in gas sample streams.
The DF analyzer is generally tolerant of contaminants, as well as pressure and
temperature fluctuations. However, the sample gas must be relatively clean,
dry, and free of hostile components.
Your analyzer has been custom built to order and calibrated to operate across a
specific range of oxygen concentrations using calibration gases traceable to
NIST.
6.1 Stable Calibration
The analyzer will remain calibrated as long as the sensor and its electrolyte are
properly maintained. Refer to the Maintenance and Calibration Checks section
on page 47 for additional information.
6.2 Electrolyte Condition Indicator
The indicator marked Electrolyte will light if the electrolyte level falls too low
or, in some cases, becomes contaminated. If the electrolyte is low, simply add
Hummingbird Brand
Replenishment Solution to the sensor.
Do not add more electrolyte after the initial bottle is installed!
Figure 6: Electrolyte Condition Indicator