Galvanic Applied Sciences 943-TGS-CE, Operation Manual

Page: 127 / 158

Revision 5 127 August 2021
7.8 Measurement Cell Installation
Once the cell windows have been cleaned or replaced, the measurement cell can be reinstalled
in the oven enclosure by following the procedure below.
1. Place the measurement cell in its approximate position focusing on the engagement of
the 3/8” elbow Swagelok
®
fitting connection on the bottom left of the measurement cell
block. Once this fitting is engaged, the aspirator drive air inlet fitting on the top left of
the measurement cell can also be reconnected to finger tight.
2. Ensure that the holes in the cell block line up with the tapped holes in the heater plate.
Install the four cell block retaining screws. Once all four screws have been partly
screwed in, they can all be tightened.
3. Install any remaining removed tubing that has yet to be re-installed.
4. Tighten all the Swagelok
®
fitting connections that were opened during the
measurement cell removal process.
5. Open the Zero Air Flow Control valve to about 2 turns. This will pressurize the
measurement cell and related plumbing to about 20 psig.
6. Open all the sample flow control valves (V1, V3, V5). Leak check all fittings with Snoop
or similar liquid leak detector. Tighten any loose fittings.
7. Connect the short fibre to the SMA fibre connector on the top of the measurement cell.
Connect the long fibre to the SMA fibre connector on the bottom of the measurement
cell. Hand tighten the nuts.
8. Loosen the set screw holding the SMA fibre connector into the measurement cell
slightly so tha the SMA fibre connector can rotate and slide in and out.
9. Use the F2 / F1 keys to navigate to the Spectrum panel. Adjust the position of each
SMA fibre connector in the measurement cell by rotating it slightly left and right and
sliding it in and out to find the position that gives the greatest Peak Height . Once the
optimal position is found for each fibre, re-tighten the set screw.
The SMA fibre connector set screws only need to be finger-tight. Do not
overtighten the set screws as this may damage the SMA fibre connector.
10. Optimize the integration period by using the F4 / F3 keys to highlight Optimize Integ.
Time
, then press
↵
.
11. Reinstall the cell RTD with the 6-32 x 3/8" screw using a 7/64" ball driver.
12. Make sure that both fibre optic cables are in their correct indent in the oven enclosure
frame, then replace the oven enclosure cover and securely fasten both latches.