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Safety Electromagnetic Flow Meter 20mA PTFE PFA F46 Liner Material DN200-DN400 EMF Flow Meter
Product Overview
Safety Electromagnetic Flow Meter 20mA with PTFE/PFA/F46 Liner Material for DN200-DN400 pipe sizes. Designed for reliable flow measurement in industrial applications.
Common Problems and Solutions
Flow Reading Fluctuates/Jumps (Most Common)
Causes: Air bubbles in the pipe, insufficient pipe filling, poor grounding, electromagnetic interference
Air removal: Install at the low point of the pipeline or add an exhaust valve upstream
Full pipe: Install horizontally with electrodes on the side to avoid air accumulation at the top; install vertically with fluid flowing upward
Grounding: Use a dedicated ground wire with resistance <10Ω; install grounding rings for plastic/insulated pipes
Anti-interference: Route signal cables away from power cables and ground the shielding layer at one end only
Zero calibration: Perform zero calibration when the pipe is full and static
Zero Drift/Negative Reading with Flow
Causes: Poor grounding, contaminated electrodes, low medium conductivity, interference
Re-establish reliable grounding to ensure equipotential connection
Clean electrodes and check insulation
Confirm medium conductivity >5μS/cm
Keep away from strong interference sources such as inverters and motors
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
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2015
Total Annual:
10000000-20000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
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 solutions for industrie... 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 solutions for industrie...
