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E-mail
1569486310@qq.com
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Phone
13281890006
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Address
No. 388, Section 2, Huanghe Middle Road, Xihanggang Street, Shuangliu County, Chengdu City
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Chengdu Tianli Instrument Technology Co., Ltd
Intelligent plug-in electromagnetic flowmeter
NegotiableUpdate on 11/19
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Overview
Overview: The LDC intelligent electromagnetic flowmeter consists of two parts: sensors and converters
Product Details
Overview: The LDC intelligent electromagnetic flowmeter consists of two parts: sensors and converters. It works based on Faraday's law of electromagnetic induction and is used to measure the volumetric flow rate of conductive liquids with a conductivity greater than 5 μ S/cm. It is an inductive instrument for measuring the volumetric flow rate of conductive media. In addition to measuring the volumetric flow rate of general conductive liquids, it can also be used to measure the volumetric flow rate of strongly corrosive liquids such as strong acids and alkalis, as well as homogeneous liquid-solid two-phase suspensions such as mud, slurry, and pulp.
Widely used in industrial sectors such as petroleum, chemical, metallurgical, textile, papermaking, environmental protection, food, as well as municipal management, water conservancy construction, river dredging and other fields for flow measurement.
2、 Product Features
All digital processing, strong anti-interference ability, reliable measurement, high accuracy, and a flow measurement range of up to 150:1
Ultra low EMI switching power supply, suitable for a wide range of power supply voltage changes, with good EMI resistance performance.
Adopting a 16 bit embedded microprocessor, it has fast computing speed, high accuracy, programmable low-frequency rectangular wave excitation, improved stability of flow measurement, and low power consumption.
Using SMD devices and surface mount technology, the circuit has high reliability.
There are no movable parts or flow blocking components inside the pipeline, and there is almost no additional pressure loss during measurement.
On site, the range can be modified online according to the actual needs of the user.
The measurement results are independent of physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc.
High definition backlit LCD display, fully Chinese menu operation, easy to use, simple to operate, easy to learn and understand.
It has digital communication signal outputs such as RS485, RS232, Hart, and Modbus. Optional configuration
It has self checking and self judging functions.
Hourly total volume recording function, recording the total flow volume in hours, suitable for time-sharing measurement system (optional)
There are three integrators inside that can display the forward cumulative amount, reverse cumulative amount, and difference cumulative amount respectively. There is also a non power outage timer inside that can record 16 power outage times. Optional configuration
Infrared handheld operator, 115KHZ communication speed, all functions of long-distance non-contact operation converter (optional)
3、 Technical parameters
| Nominal diameter (mm) (Special specifications can be customized) |
Pipeline type PTFE lining: DN10~DN600 | |
| Pipeline rubber lining: DN40~DN1200 | ||
| Flow direction: | Positive, negative, net traffic | |
| Range ratio: | 150：1 | |
| Repetitive error: | ± 0.1% of the measured value | |
| Accuracy level: | Pipeline type: 0.5 level, 1.0 level | |
| Temperature of the tested medium: | Ordinary rubber lining: -20 to+60 ℃ | |
| High temperature rubber lining: -20 to+90 ℃ | ||
| PTFE lining: -30 to+100 ℃ | ||
| High temperature PTFE lining: -20 to+180 ℃ | ||
| Rated working pressure: (High voltage can be customized) |
DN6－DN80：≤1.6MPa | |
| DN100－DN250：≤1.0MPa | ||
| DN300－DN1200：≤0.6MPa | ||
| Flow rate range: | 0.1－15m/s | |
| Conductivity range: | The conductivity of the measured fluid is ≥ 5 μ s/cm | |
| Current output: | load resistor | 0～10mA：0～1.5kΩ |
| 4～200mA：0～750 kΩ | ||
| Digital frequency output: | The upper limit of the output frequency can be set within 1-5000Hz with a transistor collector open circuit bidirectional output with photoelectric isolation. When the external power supply is ≤ 35V and conducting, the maximum collector current is 250mA | |
| Power supply: | AC220V or DC24V | |
| Require the length of the straight pipe section | Upstream ≥ 5DN, downstream ≥ 2DN | |
| Connection method: | The flowmeter and piping are connected by flanges, and the flange connection size should comply with the provisions of GB11988 | |
| Explosion proof grade: | mdIIBT4 | |
| Protection level: | IP65， Specially customized up to IP68 | |
| Ambient temperature | －25～＋60℃ | |
| Relative temperature: | 5%～95% | |
| Total power consumption: | Less than 20W | |
4、 Instrument selection 1. Selection code:
| model | Instructions | |||||||||
| LDC — | □ | □ | -□ | □ | □ | □ | □ | □ | -□ | |
| path | 10-2200mm | |||||||||
| combination | S | integrated | ||||||||
| L | split-body | |||||||||
| electrode material | M | stainless steel | ||||||||
| T | Ti (titanium) | |||||||||
| D | Ta（钽） | |||||||||
| H | Hastelloy | |||||||||
| P | Pt platinum | |||||||||
| N | Ni nickel | |||||||||
| output method | 0 | No output | ||||||||
| 1 | 4-20mA/1-5KHz | |||||||||
| 2 | 4-20mA | |||||||||
| Lining material | X | rubber | ||||||||
| F | Polytetrafluoroethylene | |||||||||
| P | polyethylene | |||||||||
| J | polyurethane rubber | |||||||||
| display in situ | 0 | No on-site display | ||||||||
| 1 | display in situ | |||||||||
| contact method | 0 | No communication | ||||||||
| A | RS485 | |||||||||
| B | RS232 | |||||||||
| C | Mobdus | |||||||||
| D | Hart | |||||||||
| grounding | 0 | No grounding ring | ||||||||
| 1 | There is a grounding ring | |||||||||
| 2 | There is a grounding electrode | |||||||||
| Maximum traffic limit | （n） | Upper limit flow rate (range) m3/h | ||||||||
Five Selection of electrode materials
The material of the electrode should be selected based on the corrosiveness of the fluid being tested. Please refer to the relevant manual. For special fluids, a corrosiveness test should be conducted
| material | code name | corrosion resistance |
| 316L stainless steel | V | 1. Suitable for neutral solutions such as industrial and domestic water, raw water and well water, urban sewage, etc 2. Weakly corrosive acid, alkali, salt media such as carbonic acid, acetic acid, etc |
| Hastelloy C | HC | 1. Suitable for oxidation resistant acids such as nitric acid, mixed acids, mixtures of chromic acid and sulfuric acid Corrosion resistance to salt or other oxidizing agent environments such as Fe and Cu 3 pairs of seawater, alkaline solution, and oxide solution have excellent corrosion resistance 4 Not applicable: Hydrochloric acid |
| 哈氏合金B | HB | 1. It has good corrosiveness to non oxidizing acids, bases, and salts such as sulfuric acid, phosphoric acid, and hydrofluoric acid 2 Not applicable: nitric acid |
| Titanium | Ti | Resistant to corrosion from seawater, various chlorides, hypochlorites, and various hydroxides |
| Tantalum | Ta | Except for hydrofluoric acid, it can withstand corrosion from almost all chemical media. But the price is expensive |
| platinum | Pt | Suitable for all acid-base salt solutions (fuming sulfuric acid and nitric acid) |
| tungsten carbide | W | Featuring excellent wear resistance, specifically designed for abrasive media such as mud and pulp |
VI Selection of lining materials
The lining material should be selected based on the corrosiveness, wear resistance, and temperature of the tested medium
| Lining material | corrosion resistance | Operating Temperature | Scope of Application |
| Neoprene rubber Ne | Corrosion resistance to general low concentration acid-base salts | -20～70℃ | Industrial wastewater with low concentration of acid, alkali and salt |
| Polyurethane rubber PO | Has excellent wear resistance, specifically designed for highly abrasive slurries, not resistant to corrosion | -10～60℃ |
Liquid containing solid particles (such as cement slurry, slurry, etc.) |
| Perfluoroethylene propylene FEP | 1. Heat and corrosion resistance equivalent to PTFE 2. High mechanical strength and good wear resistance The inner surface is smooth and not easily adhered to sediment 4 has good resistance to negative pressure and vacuum |
-40～180℃ | All fluids except for strong abrasive media such as mortar. Like PTFE, it can be used for media with hygiene requirements such as beverages |
| Polytetrafluoroethylene (PTFE) | Almost resistant to corrosion from all chemical media, with poor wear resistance | -40～180℃ | Cannot be used for negative pressure pipelines and fluids with strong wear and tear |
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