60
INZ-TN2ZRE-E
7.3 Cleaning of sampling cell
Entry of dust or water drops in the sampling cell contaminates the interior of the cell, thus resulting
in a drift. Clean the inside if dirty. Then, check the sampling device, especially the filter, to prevent
the cell from being contaminated by dust or mist.
7.3.1 Disassembly and assembly of sampling cell
There are two kinds of sampling cells, on block cells (cell length: 4 mm, 8 mm, 16 mm, 32 mm)
and pipe cells (Cell length: 64 mm, 125 mm, 200 mm and 250 mm).
2-component analyzer may incorporate both sampling cells in optical unit. In such a case, detach
the pipe cell and then block cell (See Fig. 7-3).
(1) How to remove pipe cell (See Fig. 7-1)
1) Stop measured gas. If it is harmful, purge in the measuring cell thoroughly with zero gas.
2) Turn OFF the power switch.
<In case of UL model>
The power switch is on the right side when facing the rear panel of the analyzer unit.
3) Pull out the internal case (with loose four screws on the front panel and a screw on the rear
panel).
4) Remove the tube connected to the sampling cell.
5) Loosen and remove a screw (No. 7) from the cell retainer (No. 11) fastening the pipe cell.
6) Remove the cell from the measuring unit and unscrew the infrared transmission window (No.
14) at the both ends in the right direction.
7) For assembly, reverse the disassembly procedure.
MODE
ZERO
SPAN
ENTER
ESC
Screw
Sampling cell
