Yokogawa GC8000 Process Gas Chromatograph - Manual (Page 385)

<6. Maintenance>
6-32
IM 11B08A01-01E
K9192QL High-sensitivity and corrosion-resistant type (SUS316)
High temp. type K9803UA For DET1 (SUS316)
K9803UB For DET2 (SUS316)
F0228.ai
Mounting
Screws
Mounting
Screws
General-use type High-temp. type
Wiring
Screws
3 2 1 4 5
Figure 6.28 TCD
(4) Flame Ionization Detector (FID)
There are two types of fl ame ionization detector, low temp. type (145 °C max. isothermal oven
temp.) and high temp. type. Both types have the corrosion-resistant variants. Figure 6.29 shows
the external view of a low temp. type fl ame ionization detector.
 Low-temp. type FID
(1) Stop the operation. (See “3.3.4 Stopping operation” for this procedure).
(2) Stop the supply of power.
CAUTION
The isothermal oven is extremely hot after turning off the power immediately. Keep the purging
air supplied for more than an hour after turning off the power. Keep hands away from the oven
components.
(3) Turn off the supplies of the purging air, carrier gas, hydrogen (or nitrogen) gas for
combustion, combustion air, and sample gas.
(4) Open the control unit door using a key included in the accessory kit.
(5) Remove the three couplings connected to the FID. When removing the couplings, label
them for ease of identifying the connections later.
(6) Remove the four wires connected to the FID.
(7) Remove the two setscrews which fi x the FID.
(8) Install a new FID.
(9) Reconnect the wires and pipes in the reverse order of steps (4) to (7). Confi rm wiring and
perform a leak test.
 High-temp. type of FID
(1) Stop the operation. (See “3.3.4 Stopping operation” for this procedure).
(2) Stop the supply of power.
2nd Edition : May 11, 2012-00