Yokogawa FD20 Immersion Fitting - Manual (Page 16)

IM 12B6K2-01E-E
16
Spray unit HCN
O-RINGS
(11 x 3)
PUMP
(type dependent on application)
TUBE
Control unit
Fig. 4-5. Mounting a spray unit
4-3-3. Chemical cleaning
The chemical cleaning system is based on periodically spraying of a cleanser on to the
glass membrane of the electrode. The cleanser to be used, the cleaning frequency, etc. are
highly dependent on the liquid to be measured. The cleaning period and frequency can be
adjusted on a control unit. The mounting procedure is shown in figure 4-5.
Parts and accessories
Order nr. Description
K1520FK Tubing ø1/4” for chemical cleaning (1 m)
K1547PA Complete chemical cleaning system HCN2, HCN3 for 2-hole and 3-hole fittings
K1547PB Complete chemical cleaning system HCN4, for 4-hole fittings
K1547PP EPDM spraying valve nozzle 5 sets (for all HCN- chemical cleaning systems)
* Detailed specifications are on seperate sheets.