ISCO 4230 - 4.10 Installation of Parameter Probes in Round Pipes

4230 Flow Meter
Section 4 Optional Equipment
4-24
Altitude is just off the screen. You can select D.O. STANDARD if
this calibration medium is available to you. Do not select ABS
(absolute) BAROMETRIC PRESSURE unless you are at sea
level or know how to correct for this value. The barometric
pressure provided from the Weather Bureau is corrected for
altitude. Select ALTITUDE.
Then:
Enter the altitude for your location. This is critical to the probe's
accuracy. The following display will then appear:
The reading is in milligrams of oxygen per liter. If you chose PPM
in program step 1 for D.O. units, the reading would be in parts
per million.
4.10 Installation of
Parameter Probes in
Round Pipes
4.10.1 Spring Rings (15" and
Under)
For circular pipes ranging in diameter from 6" (15.2 cm) up to 15"
(38.1 cm), spring stainless steel mounting rings are available for
mounting the probe in the flow stream. First you mount the
probe on the appropriate carrier. Then you snap the carrier into
the mounting tabs on the ring, making sure that the tabs are
fully engaged in the slots. The mounting ring is designed to be
compressed, slipped inside the pipe, and then allowed to spring
out to contact the inside diameter of the pipe. The inherent
outward spring force of the ring firmly secures it in place.
A typical self-expanding mounting ring (with a submerged probe
mounted on it) is shown. These mounting rings are available for
use in pipes with inside diameters of 6" (15.2 cm), 8" .(20.3 cm),
10" (25.4 cm), 12" (30.5 cm), and 15" (38.1 cm).
ALTITUDE UNITS OF MEASURE
• FT • • M •
ENTER ALTITUDE
ALTITUDE = XXXXX FEET (or meters)
WRAP D.O. PROBE IN MOIST CLOTH
PRESS ENTER WHEN STABLE: X.XXX MG/L