Specifications

The primar y components of a measurement loop are the sensors and transmitters. However, when
readings are suspect or if noise and interference are a problem, it can be hard to find the source of the
problem without having the proper equipment. Many of the accessories are designed with trou-
bleshooting in mind, allowing the metrology department or even the operator to diagnose equipment
quickly and efficiently.
pH & D.O. Sensor Simulator
It is difficult to tell whether a problem with a measurement is due to a faulty sensor, or to a faulty cable
or instrument. By substituting the pH & D.O. simulator in place of the sensor, a technician can verify if
the cable and transmitter are configured correctly. While not intended to“calibrate”a loop, this high pre-
cision device mimics the sensor electronically. Problems with the transmitter or cable will become evi-
dent when testing, which can save hours trying to examine and diagnose a functioning sensor.
Conversely, if the simulator works well on the system, then the technician knows to focus on the sensor
for possible difficulties.
Four-Station Polarizer
Polarization plays an important role in the calibration of a D.O. sensor. A sensor which has not been
completely polarized can be calibrated to 100%, but any attempt to do a zero calibration may result in
an elevated zero value. I nitially, D.O. sensors take a minimum of several hours to reach a completely
polarized condition. If time is short and a few percent error is not critical, it should be noted that about
98% of
the polarization occurs in the first 30 minutes. Another way to save time is to store the sensor
attached to a Broadley-James OxyProbe
®
sensor polarizer. This four-station, line-operated device keeps
four sensors polarized and ready for use. As an added feature, it contains a testing station for the bat-
tery operated single-station polarizer. Simply attach the battery polarizer to the connector and check
the status lights. Two green lights indicate the correct millivolt output and enough battery left to per-
form the job.
Single-Station Polarizer
A standard in the industry, this battery powered device keeps D.O. sensors polarized as they wait for
service. Note that these polarizers should not be autoclaved, since the batteries cannot survive the high
temperature involved.
Dust Caps, Ports, Plugs, Cleaning Kits
Broadley-James offers a wide variety of spare parts and accessories to make routine maintenance and
upkeep of the sensor a simple process. Purchased in small quantities or large, there are no minimum
orders or other penalties should you need a little something to make your system perfect.
Calibration, Diagnostics and Storage Accessories
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Broadley-James Corporation (U.S. & Canada) Toll-Free: 800-288-2833 E-mail: [e-mail]
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