Selection requirements, parameter setting, and on-site commissioning of stainless steel electromagnetic flowmeters

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For more details, visit: www.chem17.com/Product/detail/32033404.html. Contact number: Zhang Tao, 18451285537. III. Technical parameters of stainless steel electromagnetic flowmeters: Nominal diameter (mm) – special specifications can be customized. Pipe-type: DN10～DN3000; Insertion-type: DN200～DN3000. Flow direction: Forward, reverse, or net flow. Range ratio: 150:1. Repeatability error: ±0.1% of the measured value. Accuracy class: Pipe-type: Class 0.5, Class 1.0. Temperature of the fluid being measured: Ordinary rubber lining: –20～+60°C; High-temperature rubber lining: –20～+90°C; PTFE lining: –30～+100°C; High-temperature PTFE lining: –20～+180°C. Rated operating pressure: (High pressures can be customized.) DN6－DN80: ≤1.6 MPa; DN100－DN250: ≤1.0 MPa; DN300－DN1200: ≤0.6 MPa. Flow velocity range: 0.1－15 m/s. Conductivity range: The conductivity of the fluid being measured must be ≥5 μS/cm. Current output: For a load resistance of 0～10 mA, the output is 0～1.5 kΩ; for 4～20 mA, it is 0～750 kΩ. Digital frequency output: The upper limit of the output frequency can be set between 1 and 5000 Hz. It features a bidirectional output with an open-collector transistor and optical isolation. When the external power supply is ≤35V, the maximum current at the collector is 250mA. Power supplies: AC220V, DC24V, or 3.6V batteries. It is required that the length of the straight pipe section be ≥5DN upstream and ≥2DN downstream. Connection method: Flange connections are used between the flow meter and the piping; the flange dimensions must comply with GB11988 standards. Explosion protection rating: mdIIBT4. Protection rating: IP65; custom orders can achieve up to IP68. Operating temperature: –25～＋60℃. Relative humidity: 5%～95%. Total power consumption: less than 20W.

IV. Selection of Stainless Steel Electromagnetic Flow Meters
1. Selection code:
Model description: HQLDE — □ □ -□□ □ □ □ □ -□ □ □ □ □
Pipe diameter: 10-2200mm
Configuration: S – Integrated type; L – Split-type
Electrode material: M – Stainless steel; T – Titanium; D – Tantalum; H – Hastelloy; P – Platinum; N – 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
Local display: 0 – No local display; 1 – Local display
Communication method: 0 – No communication; 1 – RS485; 2 – RS232; 3 – Modbus; 4 – Hart
Grounding: 0 – No grounding ring; 1 – With grounding ring; 2 – With grounding electrode
Upper flow rate limit (n): Upper flow rate limit (in m3/h based on range)
Nominal pressure: A – 0.6MPa; B – 1.0 MPa; C – 1.6 MPa; D – 2.5 MPa
Measurement accuracy: 10.2; 20.5; 31
Medium temperature: L – 0-80°C; H – 0-150°C
Power supply: DC24V direct current; AC220V alternating current
For more details, visit: www.chem17.com/Product/detail/32033404.html. Contact number: Zhang Tao, 18451285537