Nanjing Inste Automation Co., Ltd.
| Payment Terms | T/T, Western Union |
| Supply Ability | 100 sets per day |
| Delivery Time | 2-3 word days |
| Packaging Details | wooden package |
| Caliber | DN200-400mm |
| Power Supply | AC220V，DC24V, 3.6V |
| Display | Instantaneous flow, total flow, flow velocity |
| Structure Type | Integrate or Remote |
| Pressure | 0.6Mpa-10Mpa |
| Accuracy | ±0.5% of reading |
| Fluid Temperature | -20°C~120°C |
| Ambient Temperature | -20℃~60℃ |
| Environment Temperature | -10℃～+60℃ |
| Output | 4-20mA |
| Communication | RS485 MODBUS RTU, HART, GPRS |
| Electrode | SS316L, Hastelloy B, Hastelloy C, Titannium, Tantanlum, Platinum-iridium |
| Flange Standard | DIN, ANSI, JIS |
| Brand Name | INSTE |
| Model Number | ISTLDG |
| Place of Origin | Jiangsu, China |
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Product Specification
| Payment Terms | T/T, Western Union | Supply Ability | 100 sets per day |
| Delivery Time | 2-3 word days | Packaging Details | wooden package |
| Caliber | DN200-400mm | Power Supply | AC220V，DC24V, 3.6V |
| Display | Instantaneous flow, total flow, flow velocity | Structure Type | Integrate or Remote |
| Pressure | 0.6Mpa-10Mpa | Accuracy | ±0.5% of reading |
| Fluid Temperature | -20°C~120°C | Ambient Temperature | -20℃~60℃ |
| Environment Temperature | -10℃～+60℃ | Output | 4-20mA |
| Communication | RS485 MODBUS RTU, HART, GPRS | Electrode | SS316L, Hastelloy B, Hastelloy C, Titannium, Tantanlum, Platinum-iridium |
| Flange Standard | DIN, ANSI, JIS | Brand Name | INSTE |
| Model Number | ISTLDG | Place of Origin | Jiangsu, China |
| High Light | DN400 Electromagnetic Flow Meter ，DN400 electromagnetic current meter ，20mA electromagnetic current meter | ||
Safety Electromagnetic Flow Meter 20mA PTFE/PFA/F46 Liner Material DN200-DN400
Common Problems and Solutions for Electromagnetic Flow Meters
1. Flow Reading Fluctuates/Jumps (Most Common)
Causes: Air bubbles in the pipe, insufficient pipe filling, poor grounding, electromagnetic interference
Solutions:
1. Air removal: Install at the low point of the pipeline or add an exhaust valve upstream.
2. Full pipe: Install horizontally with electrodes on the side to avoid air accumulation at the top; install vertically with fluid flowing upward.
3. Grounding: Use a dedicated ground wire with resistance <10Ω; install grounding rings for plastic/insulated pipes.
4. Anti-interference: Route signal cables away from power cables and ground the shielding layer at one end only.
2. No Flow Reading/Zero Display
Causes: Empty pipe, reversed wiring, excitation/electrode failure, incorrect parameters
Solutions:
1. Ensure the pipeline is fully filled with no negative pressure.
2. Check for reversed excitation and signal wires.
3. Verify parameters such as meter diameter, measuring range, and units.
4. Measure excitation coil resistance (normal: 80–150Ω).
3. Inaccurate Measurement (Over/Under Reading)
Causes: Electrode fouling, damaged liner, insufficient straight pipe length, zero drift
Solutions:
1. Clean electrodes: Use a soft brush or dilute hydrochloric acid to remove insulating deposits.
2. Inspect liner: Check for wear, bulges, or cracks.
3. Straight pipe requirements: Upstream ≥10D, downstream ≥5D (D = pipe diameter).
4. Zero calibration: Perform zero calibration when the pipe is full and static.
4. Zero Drift/Negative Reading with Flow
Causes: Poor grounding, contaminated electrodes, low medium conductivity, interference
Solutions:
1. Re-establish reliable grounding to ensure equipotential connection.
2. Clean electrodes and check insulation.
3. Confirm medium conductivity >5μS/cm.
4. Keep away from strong interference sources such as inverters and motors.
5. Routine Maintenance (Preventive Measures)
- Clean electrodes regularly to prevent fouling coverage.
- Maintain full pipe condition with no air bubbles or negative pressure.
- Ensure reliable grounding, separate from motor/pipe grounding.
- Route signal and power cables separately.
- Perform zero calibration regularly (every 3–6 months).
Company Details
Business Type:
Manufacturer
Year Established:
2015
Total Annual:
10000000-20000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
About Us Established in 2016, INSTE is a leading manufacturer of high-quality industrial instruments, specializing in pressure gauges, flow meters, temperature sensors, control valves, etc. With decades of expertise, we are committed to delivering reliable, accurate, and durable soluti... About Us Established in 2016, INSTE is a leading manufacturer of high-quality industrial instruments, specializing in pressure gauges, flow meters, temperature sensors, control valves, etc. With decades of expertise, we are committed to delivering reliable, accurate, and durable soluti...
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