Waterpilot FMX21 is a robust hydrostatic level probe featuring an oil‑free capacitive ceramic measuring cell for stable and accurate measurement results. Freely adjustable measuring ranges can be configured via HART, enabling flexible adaptation to different process requirements in drinking water, wastewater and saltwater applications. An optionally integrated temperature sensor enables simultaneous measurement of level and temperature.
Available in three versions for drinking water, wastewater and saltwater applications, Waterpilot FMX21 is supported by international explosion protection certificates, marine and drinking water approvals. It is suitable for use in a wide range of applications, including:
Deep and narrow drinking water wells and boreholes
Process and storage tanks in water and wastewater applications
Saltwater and marine tanks, e.g. ballast water tanks
Rivers, lakes and reservoirs for environmental monitoring
Benefits
Robust design with an oil-free capacitive ceramic measuring cell for long‑term operation
Easy system integration and flexible parameterization via HART communication
Geometry‑independent hydrostatic level measurement, ideal for deep, narrow boreholes and wells
Compliance with international explosion protection certificates, marine approvals and drinking water certifications
Optionally integrated temperature sensor enables temperature‑compensated density correction for high measurement accuracy
Kemira, a global chemicals company, needs accurate monitoring of level and temperature for polymer manufacturing. They use instrumentation with Bluetooth for safe and easy access to process data.
Protolaunch uses Endress+Hauser flowmeters and level sensors at a rocket propulsion test facility in Buckinghamshire to demonstrate the performance of the propulsion systems and components.
Torishima designs and builds large cooling water systems for customers in the Middle East, relying on Endress+Hauser instrumentation for the quality and performance of the products.
Compact probe with ceramic cell for hydrostatic level measurement, Diameter = 22 mm: General applications, fresh water Diameter = 42 mm: Waste water applications Diameter = 29 mm: Salt water applications
Supply voltage
10.5 ...35V DC
Reference Accuracy
0.2% 0.1% (optional)
Long term stability
0.1% of URL/year
Process temperature
-10°C...70°C (14°F...158°F) Diameter 29 mm (1.14"): 0°C...50°C (32°F...122°F)
Ambient temperature
-10°C...70°C (14°F...158°F) Diameter 29 mm (1.14"): 0°C...50°C (32°F...122°F)
Measuring cell
100mbar...20bar (1.5psi...300psi)
Process connection
Suspension clamp Cable mounting screws
Communication
4...20 mA 4...20 mA HART
Certificates / Approvals
ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, UK Ex
Marine approvals
GL/ ABS/ BV/ DNV/ LR
Drinking water approvals
NSF/ KTW/ ACS
Measuring principle
Hydrostatic
Characteristic / Application
Compact probe with ceramic cell for hydrostatic level measurement, Diameter = 22 mm: General applications, Fresh water Diameter = 42 mm: Waste water applications Diameter = 29 mm: Salt water applications
Specialities
Automatic density compensation Version w/o metal parts in contact to process
Supply / Communication
10.5 ...35 VDC
Accuracy
0.2% 0.1% (optional)
Long term stability
0.1% of URL/year
Ambient temperature
-10°C...70°C (14°F...158°F) Diameter 29 mm (1.14"): 0°C...50°C (32°F...122°F)
Process temperature
-10°C...70°C (14°F...158°F) Diameter 29 mm (1.14"): 0°C...50°C (32°F...122°F)
Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex
Active barrier, 1 channel for 4 to 20 mA, HART® transparent with 24 to 230 V AC/DC as well as active/passive input and output, optionally with SIL and Ex
