When the user uses an electromagnetic flow meter, an alarm phenomenon may occasionally occur. The other party naturally thinks about whether the flow meter has failed. Actually, specific issues need to be analyzed. Electromagnetic flowmeter alarms often have the following three errors:
Misunderstanding 1: Electromagnetic flowmeter excitation alarm and system alarm is electromagnetic flowmeter broken?
System alarm: SYS - system excitation alarm, also for the excitation alarm
In fact, excitation alarm and system alarm are one thing, sometimes called system excitation alarm, which belongs to the intelligent excitation signal detected by intelligent electromagnetic flowmeter. When a customer encounters such a situation, it is mostly because the pipeline vibration is too large, or In the course of use, moisture in the water in the junction box causes open circuit of the excitation coil.
Electromagnetic flowmeter system alarm solution:
The solution is also very simple, the user can take the multimeter to check the excitation circuit on and off to determine, the specific terminal for the EXT + and EXT - these two terminals, measuring whether there is resistance, determine the size of the resistance to determine the reasons for the excitation line disconnected . Specific judgment criteria: The excitation coil resistance will not exceed 200Ω. There is also a case of a battery-powered electromagnetic flowmeter. Its excitation alarm is to detect the resistance of the excitation coil. Although excitation alarm will occur, it will not affect the measurement result. The user can solve this phenomenon by setting the excitation mode.
Misunderstanding 2: electromagnetic flowmeter empty pipe alarm is electromagnetic flowmeter failure?
ATC alarm: FGP - Fluid Alarm
Intelligent electromagnetic flowmeters generally have an empty tube detection function and do not require additional electrodes. When the user selects the empty pipe alarm, when the fluid in the pipe is lower than the measuring electrode, the smart electromagnetic flow meter can detect an empty pipe state, and when the empty pipe state is detected, the analog output and digital output signal of the meter. Both are 0, and the meter flow display is also 0.
The significance of the electromagnetic flowmeter empty tube alarm is that the customer can know the flow state of the medium in the measurement pipeline in real time, even the empty tube full state, especially for those opaque pipe segments, for the user to determine the fluid in the pipe is the most convenient and quick, It embodies the humanized and intelligent design of smart flowmeters. Therefore, the electromagnetic flowmeter empty pipe alarm is not a malfunction of the electromagnetic flowmeter, but it faithfully reflects the fluid condition in the measuring pipe. Of course, the user can choose to prohibit this setting as needed.
Misunderstanding 3: Electromagnetic flowmeter upper limit alarm and flow lower limit alarm is electromagnetic flowmeter overrange?
FQH - upper limit alarm
FQL - lower limit alarm
Flow upper and lower limit alarms are calculated according to the percentage of the flowmeter's range. This parameter reflects whether the user exceeds the set range in a specific flow range and does not indicate that the electromagnetic flowmeter exceeds the measurement range and can only be regarded as electromagnetic flow. The percentage of the set range is set here because the range of the electromagnetic flowmeter can be set, and sometimes it is to increase the resolution of the output signal of the electromagnetic flowmeter. Therefore, for the upper and lower limit alarm phenomenon of the electromagnetic flowmeter, the user can According to the actual needs of the measurement can be set, if you feel it is not necessary, you can choose to close, mainly for a customer-specific flow of a prompt. The specific solution is as follows:
The upper and lower limit alarms indicate that the output current and output frequency or pulse are out of limits. After the flow range is changed to larger and smaller, the upper and lower limit alarms are revoked.
Changzhou Chengfeng electromagnetic flowmeter , the domestic high-end flow meter brand, to meet customer needs first, quality first, allowing customers to use the rest assured. The customer's affirmation of Changzhou Chengfeng is the driving force for our progress. We are striving to develop new technologies, improve product performance, adopt high-quality materials, and meticulously adhere to the quality of our products, and ensure the passing rate of production testing is 100%. Cheng Feng instrument, only to do fine, customer satisfaction is our driving force.
welkin pipeline is one of the leading manufacturer, exporter and supplier of stainless steel buttweld fittings, carbon steel buttweld fittings, alloy steel buttweld fittings, cupro nickel buttweld fittings, nickel alloy buttweld fittings and duplex stainless steel buttweld fittings. While, there are many specialised types of fittings which can be manufactured, the most common types of fittings which we manufacture include pipe elbow, tee, reducers, cap, stub ends and special size pipe bends in both seamless and welded (100% X-Ray Tested/Radiography) form.
Buttweld fittings are manufactured in accordance with national and international product standards, while we can also produce fittings as per special specifications of our customers. In case of custom size fabricated buttweld fittings, the welding is done is carried out by qualified personnel.
Buttweld fittings are generally supplied with plain ends. However, on requests from our customers fittings be supplied with beveled ends in accordance with to ASME B16.25.
Buttweld Pipe Fittings Production Range
Size Range: 1/8" NB TO 48" NB. (Seamless & 100% X-Ray Welded, Fabricated)
Product Range: Buttweld Pipe Fittings – Range of Materials, Specifications
Thickness: SCH: 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS, Custom Thickness.
Buttweld Fittings – Manufacturing Standards
ASME: ANSI B16.9, ANSI B16.28, MSS-SP-43
DIN: DIN2605, DIN2615, DIN2616, DIN2617, DIN28011
EN: EN10253-1, EN10253-2
Buttweld Fittings Complete Specifications – ASME B16.9 Wrought Steel ButtWeld Fittings
Seamless Buttweld Pipe Fittings
Seamless buttweld pipe fittings are manufactured from seamless pipes and tube by hot or cold extrusion, forming and machining process. We are a leading supplier and manufacturer of seamless buttweld pipe fittings in India. Most of the seamless buttweld pipe fittings in standard sizes and grades are available ex-stock for immediate supply to our customers.
Welded Buttweld Pipe Fittings
Seam welded buttweld fittings are produced from hot rolled stainless steel pipes. As per customer requirements, we can also manufacture and offer butt weld fittings manufactured from hot rolled plates, formed into half shells or segments and then welded on the seams.
Buttweld Fittings Grades
Stainless Steel Buttweld Pipe Fittings: ASTM A403 WP 304/ 304L/ 304H/ 316/ 316L/ 317/ 317L/ 321/ 310/ 347/ 904L/2205 Duplex Fittings
Carbon Steel Buttweld Pipe Fittings: ASTM A234 WPB / A420 WPL3/ A420 WPL6/ MSS-SP-75 WPHY 42/46/52/56/60/65/70
Alloy Steel Butt Weld Pipe Fittings: ASTM A234 WP1/ WP5/ WP9/ WP11/ WP22/ WP91
Other Materials: Monel, Nickel, Inconel, Hastelloy, Copper, Brass, Bronze, Titanium, Tantalum, Bismuth, Aluminium, Zinc, Lead, etc.
Copper Nickel Butt Weld Pipe Fittings: CuNi10Fe1Mn, CuNi30Mn1Fe
Marking & Packing
Products are packaged to ensure that there is no damage during transit. In case of exports, standard export packaging is done in wooden cases. All buttweld fittings are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make custom marking on our products.
- Value Added Services
- Hot Dipped Galvanizing
- Epoxy & FBE Coating
- Electro Polish
Quality Assurance
At Metal Industries, all fittings and flanges are subject to strict inspection at each stage of the production process, from starting material purchasing to product dispatch. They are visually examined for conformity to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards. Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality conformity of products.
Reducer Tee,Carbon Steel Tee,Butt Weld Reducer Tees,Carbon Steel Reducer Tee
Hebei Welkin Pipe Fitting Manufacturing Co., Ltd , https://www.welkinpipeline.com