Bulletin TI-72730J
Installation, Operation and Maintenance Manual
72-730 and 72-O730NA Oxygen Analyzer
www.labgasgenerators.com
3
1-800-343-4048
The galvanic cell is not installed into the analyzer prior to shipment.
It is shipped in the bag
which contains the documentation for the product. The tools required to install the oxygen sensor
are a small flat head or Phillips screwdriver and wire strippers. Install the sensor as follows:
1
Remove sensor cover on left side of unit.
2
Strip sensor connecting wires to 1/4" to 3/8" (6mm to 9mm) using wire strippers. Install the
sensor into the sensor holder on the left side panel of the analyzer (see Figure 3) by pushing
firmly into place.
3
Insert small screwdriver into the hole adjacent to the wire connection point (see Figure 3) and
press to open connector.
4
Slide the stripped wire end into the appropriate (red or black) connection port until it “bottoms
out”. The red wire goes to the “+” connector, and the black wire goes to the “-” connector.
5
Remove the screwdriver to clamp the wire into the connection port. Pull the wire gently to test
integrity of the connection. Repeat this procedure from step 2 if the wires release easily.
6
Replace sensor cover before powering up unit.
The 72-730 and 72-O2730NA Oxygen Analyzers are preset at the factory for operation at 120
VAC. (
Note:
Main supply line voltage must be within 10% of the nominal rated voltage for the
generator.)
The voltage setting for the analyzer is shown through a small window on the power
entry module on the right side of the analyzer (see Figure 5).
Check the voltage selector set-
ting prior to energizing the analyzer.
The selector setting should match the voltage of the local
power supply. (Note: The "NA" version of the oxygen analyzer will only operate at 120 VAC.) Plug
the provided power cord into the power entry receptacle of the analyzer, and plug the opposite
end into a wall outlet with earth ground protection. The North American cordset is rated for 125V,
10 amperes, 18 AWG, SJT, with ferrite bead. Do not replace it with an inadequately rated cordset.
The analyzer is powered on by plugging into electrical supply. There is no power switch on
this product.
If the voltage selector displays an input power voltage different from the local power supply, it may
be changed using only a small screwdriver (check voltage rating of analyzer on product label on
the bottom panel to ensure compatibility with local electrical supply). First, use the screwdriver
to release the cover of the power entry module on the right side of the analyzer (see Figure 5).
Next, rotate the voltage selector until the desired input voltage is displayed in the window. Finally,
replace the power entry module cover.
Galvanic Cell
Voltage Selector
The 72-730 and 72-O2730NA are calibrated prior to shipment; however, Parker strongly recom-
mends re-calibrating the units prior to initial start-up. After the initial start-up, the unit should be
calibrated on a bi-weekly basis until a suitable schedule is determined, based upon the level of
accuracy required by the application.
There are two methods of calibrating the 72-730 and 72-O2730NA Oxygen Analyzer: the two
point method and the single point method. In the two point method, the first point in the
calibration range is set to zero using a zero gas (zero percent oxygen), and the second point in
the range is set to a known percentage of oxygen using a span gas (known quantity of oxygen,
per gas supplier) or compressed air (20.9% oxygen). In the single point method, only one point
in the calibration range is set, using either span gas or compressed air. Maximum accuracy in
oxygen concentration monitoring will be achieved if the oxygen concentration in the span gas is
within the range of the expected oxygen concentration in the process stream. See Figure 1 for
calibration controls and Figure 4 for recommended calibration gas valving.
Calibration
Operation
Figure 5 - Right Side View