Specifications

37
What makes OxyProbe
®
sensors unique?
The internal seals of an OxyProbe are all mechanical seals using o-rings. There are
no adhesives to leak or fail in process, making this a more rugged and reliable
sensor. Replacing the cathode is also much easier and faster since there is no
sealant to clean from the integral threads. Additionally, no sealant makes the job
of replacing the cathode much easier and cleaner. See pages 48 and 49 for an
exploded view of a Dissolved Oxygen sensor
.
It is important to properly maintain the senso rs
by inspecting and calibrating them regularly. The
membrane cartridge should be checked and
refilled prior to every use.
All Broadley-James dissolved oxygen sensors are
available with an optional right angle connector. This
low profile design provides:
• Protection against cable fatigue
• Improved grip for sensor extraction
• Increased clearance between vessels
How to choose a se nsor:
(1) Confirm that t he entry site is a stan dard 25 mm port.
Cutaway views and dim ensions a re shown on pages 18
and 19.
(2) Deter mine how far the sensor s hould exte nd into the ves-
sel. (See illustration to the r ight.) For most process media,
the minimum length is optimal. However, if the media is
viscous and tends to co a t the inner wall of the vessel, a
longer length may provide better performance.
(3) Decide whether a right angle connector is preferred over a
straight connector.
(4) Choose cab le length a nd a connector. All D.O. sensors
require cable and connector assemblies. See pages
74 and 75.
A D.O. sensor or a pH electrode must be at
least 15° above horizontal to consistently
function properly. DO NOT install pH elec-
trodes or D.O. sensors in a port perpendicular
to the vessel wall. The liquid inside the sensor
contains small air bubbles. If not inclined
slightly above horizontal, a bubble can adhere
to the cathode or pH bulb where it will affect
the sensor’s performance.
&
&
T I P S H I N T S
T I P S H I N T S
Model D400/D405 Insertion Lengths
Sensor length = 70 mm
Sensor length = 150 mm
Sensor length = 220 mm
Insertion
Length =
1.4”
36 mm
Insertion Length =
4.5”
114 mm
Insertion Length =
7.2”
183 mm
olved Oxygen Sensors Dissolved Oxygen Sensors Dissolved Oxyge
Broadley-James Corporation (U.S. & Canada) Toll-Free: 800-288-2833 E-mail: [e-mail]
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