Reproduction of FTD Alkaline Source
Required devices¶
No. |
Parts name |
Category |
Required number |
Note |
---|---|---|---|---|
① |
Tweezers |
1 |
||
② |
Allen wrench |
1 |
Accessory supplied with adapter for collector reproduction |
|
③ |
Collector Repair Kit |
1 |
||
④ |
Adapter for Collector Reproduction |
1 |
Procedures¶
Step 1¶
Press
Step 2¶
Set [Temp] at a value lower than "50.0 °C", and set [Power controller] to [Off].
Step 3¶
Ensure that the temperature of each unit drops below 50 °C.
Step 4¶
Ensure that gas supply is stopped.
Step 5¶
Turn off the main power of the instrument (power button does not illuminate).
Step 6¶
Open INJ/DET cover.
Step 7¶
Loosen 2 collector fixing knurled screws.
Step 8¶
Remove collector cover.
Step 9¶
Turn FTD collector counterclockwise to loosen it.
Step 10¶
Remove FTD collector.
Step 11¶
Loosen screws with Allen wrench supplied with adapter for collector reproduction (④), and remove collector knob.
Step 12¶
Install adapter for collector reproduction (④).
Step 13¶
Tighten screws with Allen wrench and fix adapter for collector reproduction (④).
Step 14¶
Turn the collector upside down and install it.
Step 15¶
Alternately tighten the upper and the lower collector fixing knurled screws a few times.
When either one is tightened, the other one may loosen. Be sure to tighten them several times and check that they are fixed appropriately.
Step 16¶
Turn on the main power of the instrument.
Step 17¶
Press
Step 18¶
Press
Step 19¶
Set [Voltage] at [0] and set [Power controller] to [On].
Step 20¶
Increase the value of [Voltage] gradually while checking red hot of filament of alkaline source.
Continue it until the filament turns pale orange.
Step 21¶
Lightly put supplementary alkaline source bar into contact with the coil using tweezers and melting it little by little to add alkaline source on the coil.
-
When heat capacity increases, the coil becomes dark, and supplementary alkaline source attaches to the coil, increase the voltage by about 5 to 10 %. After it becomes red hot again, remove unneeded part.
-
Excessive addition of alkaline source decreases the sensitivity of the analysis. It should be a light coat (outer diameter of 1.8 to 2 mm) on the coil.
Step 22¶
After the addition, increase [Voltage] by about 5 to 10 % and adjust the shape of alkaline source on the coil.
Step 23¶
When the surface becomes smooth, set [Voltage] at [0] and set [Power controller] to [Off].
Step 24¶
Set [Control Mode] to [Current].
Step 25¶
Loosen 2 collector fixing knurled screws.
Step 26¶
Remove collector cover.
Step 27¶
Remove adapter for collector reproduction installed on FTD collector, and install collector knob.
Install it in reverse order of step 8 to 11.
Step 28¶
Install FTD collector and turn it until it reaches the bottom.
Excessive tightening may break the filament. For installation of FTD collector, do not use tools including drivers and install it by hand.
Step 29¶
Install collector cover.
Step 30¶
Alternately tighten the upper and the lower collector fixing knurled screws a few times.
When either one is tightened, the other one may loosen. Be sure to tighten them several times and check that they are fixed appropriately. If collector fixing knurled screws loosen, red hot of alkaline source may be incomplete and it may cause decrease of sensitivity.
Step 31¶
Close INJ/DET cover.
Step 32¶
Perform conditioning.
Perform conditioning to adjust alkaline source and reduce impurities that cause noises.
-
Press
-
Set [Voltage] at about [1.00].
-
Set flow rate of hydrogen, Air, and makeup gas at the same values as the analysis.
-
Set [Adjustment Time] at about 3 to 5 hours.