Produkt
E+H Waterpilot FMX21 Hydrostatic Level Transmitter
FMX21-AA121FGD10A
The FMX21 Submersible Hydrostatic Level Transmitter is a high-precision, heavy-duty solution designed for continuous liquid and water level measurement in deep wells, reservoirs, rivers, and industrial wastewater treatment systems. Engineered with an advanced capacitive, oil-free ceramic measuring cell and robust stainless steel or titanium housing, this submersible pressure sensor delivers exceptional long-term stability, high overload resistance, and reliable performance even in harsh, corrosive environments. Featuring integrated climate-proof tube venting, 4-20mA HART signal output, and IP68 submersible protection, the FMX21 ensures highly accurate level detection and smooth automation integration for municipal water supply, environmental monitoring, and process industries worldwide.
The FMX21 hydrostatic level transmitter represents a state-of-the-art solution for modern liquid level instrumentation, delivering unmatched durability and measurement precision in submersed industrial applications. Built around a robust dry capacitive ceramic sensor cell, the transmitter directly measures hydrostatic head pressure, providing proportional, high-accuracy liquid height calculation regardless of foam formation, surface turbulence, or physical tank geometry.
Its rugged enclosure, available in high-grade 316L stainless steel or heavy-duty titanium, combined with chemically resistant cable options, guarantees complete immunity to aggressive chemicals, saline water, and mechanically abrasive fluids. Designed with integrated atmospheric pressure compensation through a vented extension cable and protected by a specialized climate filter, the device effectively prevents condensation build-up inside the probe body, ensuring uninterrupted operation in high-humidity ambient conditions.
With worldwide drinking water and explosion-proof certifications, seamless 4-20mA HART system compatibility, and factory pre-calibrated measuring ranges, this submersible level sensor minimizes installation downtime and provides global industrial facilities with a low-maintenance, cost-effective automation instrument for precise inventory management and process safety control.
FAQ
Q1: How does the FMX21 handle ambient atmospheric pressure changes during level measurement?
A: The FMX21 extension cable features an internal capillary vent tube that connects the probe’s reference pressure chamber directly to the atmosphere. This atmospheric compensation automatically eliminates ambient air pressure fluctuations, ensuring that the sensor measures purely hydrostatic liquid head pressure for precise level calculations.
Q2: What is the main advantage of the capacitive ceramic measuring cell over metallic diaphragms?
A: The ceramic measuring cell (Ceramed®) is oil-free and extremely hard, offering superior resistance to mechanical abrasion, chemical corrosion, and high overpressure spikes (up to 40 times rated range). Unlike metal diaphragms, it does not suffer from mechanical fatigue or oil leakage hazards.
Q3: Can this level sensor be used in aggressive media or seawater?
A: Yes. For saline environments, coastal monitoring, or aggressive chemical applications, we offer titanium sensor probe options paired with high-durability FEP or PUR cable jackets to resist chemical degradation and marine bio-fouling.
Q4: Do you support OEM customization, custom cable lengths, and private labeling for global distributors?
A: As a professional automation instrument manufacturer, we provide complete OEM/ODM solutions, including customized cable lengths, specific pressure range factory pre-calibration, custom branding/laser etching, and tailored packaging for overseas distributors and system integrators.
Technische Daten
| Measuring Principle | Hydrostatic Pressure |
|---|---|
| Key Features | Compact integrated probe with ceramic sensor for hydrostatic level measurement: • 22 mm Diameter: Universal applications, fresh / pure water • 42 mm Diameter: Wastewater applications • 29 mm Diameter: Saltwater / saline applications |
| Supply Voltage | 10.5 to 35 V DC |
| Reference Accuracy | Standard: ±0.2% High Precision Option: ±0.1% |
| Long-Term Stability | 0.1% URL / year |
| Process Temperature | -10°C to +70°C (+14°F to +158°F) 29 mm (1.14") Diameter: 0°C to +50°C (+32°F to +122°F) |
| Ambient Temperature | -10°C to +70°C (+14°F to +158°F) 29 mm (1.14") Diameter: 0°C to +50°C (+32°F to +122°F) |
| Measuring Range / Sensor Cell | 100 mbar to 20 bar (1.5 psi to 300 psi) |
| Process Connection | Mounting Clamp (Suspension Clamp) Cable Gland / Cable Fastening Screw |
| Communication / Signal Output | 4 to 20 mA 4 to 20 mA HART |
| Ex-Certifications & Approvals | ATEX, FM, CSA, CSA C/US, IECEx, NEPSI, INMETRO |
| Marine / Marine Approvals | GL / ABS / BV / DNV |
| Drinking Water Approvals | NSF / KTW / ACS |
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