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Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter

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  • Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter
  • Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter
  • Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter
  • Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter

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Endress+Hauser Waterpilot FMX21 Hydrostatic Level Transmitter 4-20mA HART FMX21 High Precision Hydrostatic Level Transmitter
Endress+Hauser FMX11 Waterpilot is a high-performance submersible hydrostatic level transmitter designed for continuous liquid level measurement in water, wastewater, industrial tanks, boreholes and reservoirs.
Adopting high-precision ceramic measuring cell technology, the FMX11 features excellent long-term stability, overload resistance and corrosion resistance. It delivers accurate 4-20mA analog output and optional HART communication, enabling easy integration with PLC, DCS and industrial control systems for remote monitoring and data management.
With robust IP68 full waterproof protection and stainless steel probe structure, it adapts to harsh working conditions including underground wells, sewage treatment, municipal water supply, chemical storage tanks and marine ballast tanks. Optional Pt100 temperature measurement function realizes simultaneous level and temperature detection, greatly improving measurement efficiency.
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Product Description

Product Overview

The E+H FMX11 is a submersible hydrostatic level transmitter that operates based on the principle of hydrostatic pressure: the pressure exerted by a liquid column is proportional to its height, and the transmitter converts this pressure into a standard electrical signal for easy integration with industrial control systems. Designed by Endress+Hauser, a global leader in process measurement and automation, the FMX11 is built to meet the strictest industry standards, ensuring long-term stability, high accuracy, and low maintenance.
This versatile level transmitter is suitable for measuring liquid levels in tanks, reservoirs, boreholes, wells, and open channels, and is compatible with various liquids including clean water, wastewater, drinking water, saltwater, and mild chemical solutions. With its compact structure and flexible installation options, it can be easily deployed in both above-ground and underground applications, even in limited space.

Core Technical Specifications

  • Measuring Range: 0.1 m to 20 m (liquid column); optional extended range available for special applications
  • Accuracy: ±0.1% of full scale (FS) for platinum version; ±0.2% FS for standard version, ensuring precise measurement even in low-level applications
  • Measuring Cell: High-performance ceramic cell with excellent overload resistance (up to 10x full scale) and long-term stability, resistant to corrosion and wear
  • Output Signal: Standard 4-20 mA analog output; optional HART 7 communication protocol for remote configuration, calibration, and data monitoring
  • Temperature Measurement: Optional Pt100 temperature sensor (accuracy ±0.2 °C) for simultaneous level and temperature detection, eliminating the need for additional sensors
  • Protection Class: IP68 (full waterproof and dustproof), suitable for long-term submergence in liquid; optional IP69K for high-pressure cleaning applications
  • Material: Probe made of stainless steel (1.4404/316L) or titanium (optional for corrosive media); housing made of robust plastic or stainless steel, ensuring durability in harsh conditions
  • Operating Temperature: -20 °C to +80 °C (process temperature); -40 °C to +85 °C (ambient temperature), adaptable to extreme weather and industrial environments
  • Pressure Rating: Up to 10 bar (max), suitable for high-pressure tank applications
  • Certifications: NSF, KTW, ACS (for drinking water applications); ATEX, IECEx (for explosive environments); CE, UL, CSA (for global market compliance)

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Products Recommended

Pressure Transmitters for Industrial Pressure Measurement

Xinyi Instrument supplies pressure transmitters for process control, hydraulic systems, petrochemical plants, water treatment, HVAC, power generation and general industrial pressure monitoring. Our pressure transmitter range covers gauge pressure, absolute pressure, differential pressure, high temperature media and digital communication applications.

Choose from compact pressure transmitters, smart 3051 differential pressure transmitters, diaphragm seal models, RS485 digital pressure transmitters and high frequency dynamic pressure sensors. Standard outputs include 4-20 mA, voltage output, HART and RS485 Modbus options, with stainless steel wetted parts and custom process connections available on request.

Pressure Transmitter Parameters

Pressure Types Gauge, absolute, negative pressure, differential pressure
Measuring Range From low differential pressure to high pressure ranges up to 100 MPa, depending on model
Output Signals 4-20 mA, 0-5 V, 1-5 V, 0-10 V, RS485 Modbus, HART options
Accuracy Typical options include 0.1%, 0.2%, 0.25% and 0.5% FS
Process Connection M20 x 1.5, G1/4, G1/2, NPT and customized thread connections
Wetted Materials Stainless steel, 316L diaphragm and corrosion-resistant sealing options
Media Water, oil, gas, air, steam and compatible liquid or gas media
Applications Pipeline pressure, tank level, flow differential pressure, hydraulic pressure and automation systems

Recommended Pressure Transmitter Series

  • Xinyi YW-150 - differential pressure transmitter for stable industrial measurement.
  • Xinyi YW-3051DP - smart differential pressure transmitter for process control.
  • Xinyi YW-130 / YW-140 - compact pressure transmitters for general pressure monitoring.
  • RS485 Digital Pressure Transmitter - Modbus communication for remote monitoring systems.
  • High Temperature Pressure Transmitter - designed for hot media and demanding process conditions.
  • Siemens, Yokogawa and ABB Options - international brand transmitters available for project matching.

Pressure Transmitter FAQ

What is a pressure transmitter used for?

A pressure transmitter converts the pressure of liquid, gas or steam into a standard electrical signal for PLC, DCS, recorder or control instrument input. It is widely used for pipeline pressure, tank level, flow measurement and process safety monitoring.

How do I choose the right pressure transmitter?

Confirm the pressure range, pressure type, medium, temperature, output signal, accuracy, installation thread, electrical connection and environmental requirements. For corrosive media, high temperature or sanitary applications, diaphragm material and sealing structure are especially important.

What is the difference between gauge, absolute and differential pressure transmitters?

Gauge pressure transmitters measure pressure relative to atmospheric pressure. Absolute pressure transmitters measure pressure relative to vacuum. Differential pressure transmitters measure the pressure difference between two points and are commonly used for flow, filter and level measurement.

Can Xinyi Instrument provide customized pressure transmitters?

Yes. Xinyi Instrument can support customized pressure ranges, process connections, output signals, cable length, display options and model selection for different industrial applications.