NBK-M
11. Order Codes
Model
Nominal Pressure
Connection
Nominal Diameter
Roller Indicator
Transmitter
Medium Density
Optionsn
NBK-M
1= PN 6
(not for ASME-Fl.)
F= DIN Flange
10= DN 10
(only fori DIN Fl.)
0= without
0= without
8= from 0.8 g/cm³ 0= without
2= PN 16 (150 lbs)
A= ASME-Flange 15= DN 15, 1/2"
P= PP-rollers
T= magnetostrictive
1= from 1.0 g/cm³ ...= (see list)
3= PN 40 (300 lbs)
R= R-Thread
20= DN 20, 3/4"
K= ceramic rollers W= resistive
N= NPT-Thread
25= DN 25, 1"
M= resistive with
transmitter
NBK-R
Standard limit contact
NBK-Rex
Limit contact-Eex d IIC T6
NBK-RT200
High-temperature contact max. 200 °C
12. Maintenance
The drain plug should be opened now and again, to wash out any deposits in
case the liquid to be measured contains dirt particles, which could settle in the
bypass tube. If coatings have formed, the tank must be emptied or shut off; the
lower cover flange must then be removed. The float should then be removed
carefully from the vessel. The bypass tube can now be mechanically cleaned.
The inspection window for the roller indication is made of high-quality plexiglass
(glass for high-temperature display). It should be cleaned with a suitable cleaning
agent.
The indicator requires no further maintenance.
NBK-M_manual_3-5-04.doc
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