16
6.4.4 INSERTION OF A NEW MEASUREMENT CELL
Caution:
Do NOT touch the sensor membrane. The surface has a small
Teflon® membrane which can be destroyed by contact. The sensor will
have to be replaced if the membrane surface is destroyed.
For installation of the new cell, proceed as follows:
1. Shut off the unit.
2. Take the new cell out of the package.
3. Unscrew the wing nut from the cell block. Be careful that you
don’t shift
or destroy the O-Ring.
4. Carefully place the cell at the center of the cell block bottom. The
sensor membrane wall will be below.
5. Press the cell together with the cell bottom in the cell block. The
contact surface will be on the top. Screw the wing nut back on securely.
Note: The cover will fit correctly only in one direction.
6. Restart the equipment and purge the sampling system with dry
nitrogen immediately.
6.4.5 CELL WARRANTY
Warranty period begins on the date of shipment. The customer should purchase
only one spare cell. Do not attempt to stockpile spare cells.
Note: These cells are not designed for applications where CO
2
is a
major component in the sample.
However, concentrations of 1,000 ppm or less of CO
2
will not adversely affect the
cell performance. Consult us for available options for either intermittent or
continuous CO
2
exposure.
If a cell was working satisfactorily, but ceases to function before the warranty
period expires, the customer will receive credit toward the purchase of a new cell.
If you have a warranty claim, you must return the cell in question to the factory
for evaluation. If it is determined that failure is due to faulty workmanship or
material, the cell will be replaced at no cost to you.
