Daily maintenance (1)
Only need to periodically check the instrument, check the environment around the instrument, remove the dirt, ensure that no water and other substances are inspected, check whether the wiring is good, check whether there is a new strong electromagnetic field device near the instrument or a new installed wire across the instrument. If the measuring medium is easy to contaminate the electrode or precipitate or scale in the measuring tube wall, it should be regularly cleaned and cleaned.
Folding fault finding
After the flowmeter starts to be put into operation or is put into operation for a period of time, it is found that the instrument is not working properly. First, check the external condition of the flowmeter, such as whether the power supply is good, whether the pipeline is leaking or is in a state of non-full pipe, whether there is air bubble in the pipe, whether the signal cable is Damage, converter output signal (ie rear position meter input loop) is open circuit. Remember to blindly disassemble the flowmeter.
Corrosion resistance and wear resistance
Stainless steel: 0Crl8Nil2M02Ti is used for industrial water, domestic water, sewage and other weakly corrosive media. It is suitable for petroleum, chemical, steel and other industrial sectors as well as municipal, environmental protection and other fields.
Hastelloy B: has good corrosion resistance to hydrochloric acid at all concentrations below the boiling point, and is also resistant to corrosion by non-chlorinated acids, bases, non-oxidizing salts such as sulfuric acid, phosphoric acid, hydrofluoric acid, and organic acids.
Hastelloy C: resistant to non-oxidizing acids, such as nitric acid, mixed acid, or corrosion of mixed media of chromic acid and sulfuric acid, and also resistant to oxidizing salts such as Fe, ", Cu" or other oxidants, such as Corrosion of hypochlorite solution and seawater above normal temperature
Titanium: It is resistant to seawater, various chlorides and hypochlorites, oxidizing acids (including fuming sulfuric acid), organic acids and alkalis. It is not resistant to the corrosion of relatively pure reducing acids (such as sulfuric acid or hydrochloric acid), but if the acid contains an oxidizing agent (such as nitric acid, Fc++, Cu++), the corrosion is greatly reduced.
钽: Excellent corrosion resistance and glass are very similar. In addition to hydrofluoric acid, fuming sulfuric acid, alkali, it is almost resistant to the corrosion of chemical media (including boiling point of hydrochloric acid, nitric acid and sulfuric acid below 50 ° C). Antimony in alkali; corrosion resistant.
Almost resistant - cut chemical media, but not for aqua regia and ammonium salts.
Stainless steel coated tungsten carbide
For non-corrosive, strong abrasive media.
Note: Due to the wide variety of media, its corrosiveness is affected by complex factors such as temperature, concentration and flow rate, so this table is for reference only. The user should make his own choice according to the actual situation. If necessary, the corrosion resistance test of the material to be selected, such as the coupon test.
Intelligent GPRS MAG flow meter
The GPRS wireless transmission flowmeter is specially designed for the industry. It can meet the monitoring and management of traffic in urban water supply, heating and gas supply systems, and the processing and calculation of data. It is widely used in urban water supply, heating, gas supply systems, sewage treatment, Water conservancy projects and other industries.
GPRS wireless transmission flowmeter battery-powered converter is to use GPRS wireless communication to achieve remote monitoring. The data of the battery-powered converter can be read in any area covered by the GPRS wireless network. Through the GPRS wireless communication flowmeter network system, the data collected by the field instrument can be transmitted to the monitoring center in real time to achieve unified monitoring and distributed management of the field instrument.
GPRS wireless transmission flowmeter adopts specially designed sensor excitation system and high-performance lithium battery power supply system, and adopts 16-bit embedded ultra-micro power processor, full digital signal processing, stable measurement, high measurement accuracy and strong anti-interference ability. Features such as automatic bidirectional flow measurement, on-site instantaneous flow, positive and negativecumulative total display, self-diagnosis fault alarm, GSM data infinity transfer, etc. Users can realize traffic data through powerful GSM/GPRS remote management software system. GPRS wireless communication, storage, data analysis and other functions.