Endress+Hauser FMX21-AA221HGB10A Waterpilot FMX21 Hydrostatic Level Transmitter

Endress+Hauser FMX21-AA221HGB10A Waterpilot FMX21 In Stock Hydrostatic Level Transmitter

In Stock & Ready to Ship. The Endress+Hauser FMX21-AA221HGB10A is a premium hydrostatic level probe designed for continuous measurement in water and wastewater applications. As part of the renowned Waterpilot FMX21 series, this specific model combines a compact 22mm diameter with a robust ceramic measuring cell, making it the ideal solution for precise level monitoring in deep wells, reservoirs, sumps, and storage tanks where reliability is non-negotiable .

Leveraging capacitive, oil-free ceramic sensor technology (99.9% Al₂O₃), the FMX21 ensures that your measurements remain accurate and stable, completely unaffected by temperature fluctuations or build-up . With our in-stock availability of the FMX21-AA221HGB10A, you can secure this industry-leading technology with minimal lead time.

Key Technical Specifications (FMX21-AA221HGB10A)

Understanding the technical capabilities of the FMX21-AA221HGB10A is crucial for ensuring it fits your application. Below are the core specifications based on the订货号 (order code) breakdown and official datasheets .

Model: Endress+Hauser Waterpilot FMX21

Order Code: FMX21-AA221HGB10A

Measuring Principle: Hydrostatic level / pressure probe

Sensor Type: Oil-free, capacitive ceramic cell (99.9% purity). This offers exceptional resistance to overload and aggressive media .

Diameter: 22 mm (0.87"). This slim profile allows for installation in tight spaces, such as standard 1" well casings .

Measuring Range: Configurable via HART. The sensor cell supports ranges up to 20 bar (200 mH₂O / 600 ftH₂O) .

Accuracy:

Standard: ±0.2% of range

Platinum version (optional): ±0.1% .

Output Signal: 4-20 mA with superimposed HART 6.0 protocol, allowing for remote configuration and diagnostics .

Process Temperature: -10 to 70 °C (14 to 158 °F) .

Wetted Parts Materials: Ceramic (diaphragm), 316L Stainless Steel (housing), and FKM (seal). The extension cable is typically PUR or FEP .

Special Feature: Integrated temperature measurement (optional Pt100) for simultaneous level and temperature monitoring .

In Stock Status: Immediate availability for the FMX21-AA221HGB10A configuration.

Why Choose the Waterpilot FMX21? Key Benefits

Selecting the right level measurement technology impacts your operational efficiency and maintenance costs. The FMX21 series offers distinct advantages that set it apart from standard submersible probes .

1. "Oil-Free" Ceramic Sensor for Ultimate Longevity

Unlike traditional oil-filled sensors that can drift or clog over time, the Waterpilot FMX21 utilizes a capacitive, oil-free ceramic cell . The high-purity ceramic (99.9% Al₂O₃) is extremely rigid and resistant to abrasion, corrosion, and overload. It can withstand pressure overloads up to 40 times the full scale without damaging the diaphragm, ensuring long-term stability and virtually zero maintenance .

2. Climate-Proof Design for Harsh Environments

The electronics are completely potted and feature a 2-filter pressure compensation system . This design prevents moisture and humidity from damaging the internal components—a common failure point in other probes. Whether submerged in a deep well or exposed to humid conditions, the FMX21 delivers reliable performance year after year.

3. High Accuracy with Density Compensation

Achieve the "highest level accuracy" with the FMX21 . The HART protocol allows for flexible scaling and the activation of automatic density compensation. If media density changes, the device corrects the level calculation, preventing measurement errors that can occur with standard transmitters.

4. Versatile Applications & Global Approvals

The FMX21 series is certified for a wide range of applications:

Drinking Water: Holds certifications like NSF, KTW, and ACS .

Wastewater: Robust design suitable for sludges and sewage .

Saltwater: Versions available for marine environments and ship ballast tanks (marine approvals: GL, ABS, LR, BV, DNV) .

Hazardous Areas: Equipped with international explosion protection certificates (ATEX, FM, CSA, IEC Ex) .

5. Compact 22mm Diameter

The AA221 designation in the model code signifies the 22mm diameter version. This slim profile is critical for applications in restricted spaces, allowing the probe to be lowered into small-diameter boreholes and wells without getting stuck .

Applications

The Endress+Hauser FMX21-AA221HGB10A is perfectly suited for:

Groundwater Monitoring: Precise measurement in observation wells and boreholes.

Tank Level Measurement: Inventory management in storage tanks, cooling towers, and day tanks .

Water & Wastewater Treatment: Level monitoring in sumps, lift stations, reservoirs, and clarifiers .

Environmental Compliance: Surface water monitoring in rivers and lakes.

Why Buy From Us?

In Stock: The FMX21-AA221HGB10A is available immediately. No long factory lead times.

Competitive Pricing: Get the best value on genuine Endress+Hauser instrumentation.

Fast Shipping: We ensure your order is packaged securely and shipped out promptly.