The measurement principle of the RF admittance level switch is based on the principle of capacitance. The probe and the container wall in the container form two plates of a capacitor. When the medium between the two plates of the capacitor changes, the capacitance value also occurs. Variety. The measurement principle can be expressed by the following formula:
In order to study the relationship between material permittivity and capacitance change, we make the following assumptions:
The first case: D=2000mm, d=10mm, ε=2, find the relationship between △C and H
The second case: D=2000mm, d=10mm, ε=51, find the relationship between △C and H
From the above, it can be seen that the larger the dielectric constant, the larger the capacitance change value and the higher the sensitivity. (Calculated as R&D Department)
SP metal Vertical Slurry Pumps
Naipu SP metal Vertical Slurry Pumps are vertical, centrifugal slurry pumps submerged in sump to work.They are designed for delivering abrasive,large particle and high density slurries.These pumps have no need of any shaft seal and sealing water. They can also be operated normally for insufficient suction duties.Wet parts of type NP-SP pump are made of abrasion-resistant metal. All parts of type NP-SP(R) pump immersed in liquid are lined with rubber outer liner.They are suited to transport non-edge angle abrasive slurry.
Typical Applications---
Sump drainage washdown
Floor drainage
Mill sumps
Carbon transfer
Monitoring
Magnetite mixing
Main Part Number At The Drawing
|
1.Discharge Pipe
2.Column 3.Strainer 4.Back Liner |
5.Impeller
6.Pump Casing 7.Lower Pipe |
Materials of Construction
|
|
IMPELLERS |
CASING |
COLUMN |
DISCHARGE |
SEALS |
|
Standard |
High Chrome Alloy Rubber |
High Chrome Alloy Rubber |
Mild Steel |
Mild Steel |
Natural Rubber |
|
Options |
Butyl |
Neoprene |
Neoprene |
Neoprene |
Nordel |
Selection Chart
NP-SP SUMP PUMP PERFORMANCE PARAMETERS
|
Type |
Allowable Mating Max. Power(Kw) |
Range Of Performance |
Impeller |
|||||
|
Capacity/Q |
Head/m |
Speed/rpm |
Max Efficiency/% |
No. of Vanes |
Impeller Diameter/mm |
|||
|
m³/hr |
L/S |
|||||||
|
40PV-NP-SP |
15 |
19.44-43.2 |
5.4-12 |
4.5-28.5 |
1000-2200 |
40 |
5 |
188 |
|
65QV-NP-SP |
30 |
23.4-111 |
6.5-30.8 |
5-29.5 |
700-1500 |
50 |
5 |
280 |
|
100RV-NP-SP |
75 |
54-289 |
15-80.3 |
5-35 |
500-1200 |
56 |
5 |
370 |
|
150SV-NP-SP |
110 |
108-479.16 |
30-133.1 |
8.5-40 |
500-1000 |
52 |
5 |
450 |
|
200SV-NP-SP |
110 |
189-891 |
152.5-247.5 |
6.5-37 |
400-850 |
64 |
5 |
520 |
|
250TV-NP-SP |
200 |
261-1089 |
72.5-302.5 |
7.5-33.5 |
400-750 |
60 |
5 |
575 |
|
300TV-NP-SP |
200 |
288-1267 |
80-352 |
6.5-33 |
350-700 |
50 |
5 |
610 |
Sp Metal Vertical Slurry Pumps,40Pv Vertical Slurry Pump,100Rv Vertical Pump,Vertical Sump Pump
Shijiazhuang Naipu Pump Co., Ltd. , https://www.naipu-pump.com