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Detail:
Implementation of the standards: JB/T9248-2000
Electromagnetic Flowmeter lining and the public that Path DN (mm):
Rubber lining40,50,65,80,100,125,150,200,250,300,350,400,450,500,600
PTFE lining10,15,20,25,32,40,50,65,80,100,125,150,200,250,300,350,400,450,500,600
Note: special specifications can be ordered
Measurement error : 0.5% 1.0%
Tested medium temperature :
Rubber lining -20 桪 + 65 PTFE -20 桪 + 150
Ambient temperature : -25 + 45
Relative Humidity : 5%-95%
Rated pressure : DN10-DN65:4.0Mpa DN80-DN150:1.6Mpa DN200-DN600:1.0Mpa
Velocity of : 0.05-10m/s
Conductivity: the measured fluid conductivity of not less than 20 s / cm
Output signal and load resistance: 0-10mADC ,0-1000 4-20mADC ,0-500
Electrode materials: stainless steel with Mo (M02Ti), titanium (Ti), tantalum (Ta), Harrington alloy (HB), platinum (Pt)
Protection levels: standard IP65, IP67, optional IP68
Straight length: the upper reaches of 5DN, downstream 2DN
Link: pipe flange connection, in line with standards: GB9119-88
Power Supply: 220VAC 10%, 50HZ 5% power consumption: <25W
Lining the choice
According to the measured temperature and the types of media, to select the lining material. Choice of lining the standard in table 1.
|
Lining materials |
Main Performance |
Scope |
|
Neoprene |
Wear resistance, and has excellent flexibility, high Cheduan, and the general low concentration of acid-base resistant to salt corrosion media, intolerance of the medium corrosion. |
<60 , the general water, sewage, mud, pulp. |
|
Polyurethane |
Have excellent wear resistance, Naisuan Jian performance slightly worse. |
<80 , the wear-neutral pulp, coal slurry, mud. |
|
PTFE |
It is the most stable chemical properties of a material, the capability of boiling hydrochloric acid, sulfuric acid, nitric acid and aqua regia, strong alkali and various organic solvents, chlorine trifluoride intolerance, high temperature of oxygen fluoride. |
<180 , strong acids, alkalis and other strong corrosive media, health media category. |
|
F46 |
Chemical stability, electric insulation, lubrication, not sticky and not Ranxing PTFE and similar, but the F46 material strength, anti-aging, low temperature performance and gentle toughness than PTFE. And metal bonding properties, and good wear resistance in PTFE, has good slitting-resistant properties. |
<180 hydrochloric acid, sulfuric acid, aqua regia and strong oxidant, health media category. |
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Central grounding electrode material of choice |
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Electrode material of choice should be based on the measured medium corrosive, wear, selected by the user, the general media, available on the corrosion of the manual, selected electrode material; mixed acid and other components of the media, should be pegged to do experimental films. Reference Table 2, as follows: |
|
Material |
Corrosion resistance |
For example tested liquid |
|
OCr18Ni12Mo2Ti |
The temperature of less than 80 degrees Celsius in various acid-base solution with strong resistance to chloride (calcium chloride, ammonium chloride, potassium chloride, sodium chloride) sulfide, a corrosive lye |
Phosphoric acid, caustic soda |
|
316L |
Intolerance inorganic acids, organic acids, the chloride corrosion weak for non-corrosive and aggressive media |
Domestic and industrial water, sewage, pulp, mud, syrup |
|
HB |
Resistance boiling point all the concentration of hydrochloric acid, sulfuric acid, hydrofluoric acid, organic acids, and other non-oxidizing acid and alkali, non-chloride salt solution. |
Hydrochloride |
|
HC |
Tolerance of acid such as: nitric acid, chromic acid mixed with acid or sulfuric acid oxidation of the mixture and salt, water, and so on. |
Seawater |
|
(Ti) |
Ability of sea water, chlorine and various hypochlorite, oxidizing acid (including fuming nitric acid), organic acids, alkalis, such as corrosion, intolerant than the net reduction of acid (such as sulfuric acid, hydrochloric acid), corrosion, but if Acid containing oxidants (such as nitric acid and contain Fe, Cu-media) when corrosion greatly reduced. |
Chilled brine, water, ammonia hydrogen peroxide, acetic acid |
|
(Ta) |
With excellent corrosion resistance and glass are similar, in addition to hydrofluoric acid, concentrated sulphuric acid, almost all chemical medium capability (including the boiling point of hydrochloric acid, nitric acid and sulfuric acid below the 175 and aqua regia), corrosion, the base of intolerance Corrosion. |
Hydrochloric acid, aqua regia, phosphoric acid, sulfuric acid |
|
(Pt) |
Chemical applied to almost all the media corrosion, but does not apply to aqua regia and ammonium salt |
Concentrated sulphuric acid, hot alkaline solution |
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