FIEDLER > Level measurement

Level measurement

Water level measurement devices are used to accurately monitor changes in water levels in reservoirs, wells, or watercourses. They enable reliable monitoring, data logging, and data transmission for water management and industrial applications.

Product type

Float level meters and switches

Float-type level gauges and switches are used to measure and indicate the level of liquids. They provide reliable data for monitoring and automatically controlling pumps and other equipment in tanks, sumps, and industrial facilities.

Float level meters

Float-type level gauges measure the level of liquids using the float principle. They are suitable for precise monitoring in tanks, sumps, and open channels, and provide reliable data for control and monitoring.

PSH-30 - Float-Type Continuous Level Gauge

PSH-30 - Float-Type Continuous Level Gauge

The PSH-30 measures the liquid level and the temperature of the level sensor, which may, with a certain delay, correspond to the temperature at the measurement point. Thanks to a modern measurement method, the level sensor achieves a resolution of 1 mm over a virtually unlimited measurement range. It allows for measuring level fluctuations over a range of up to 30 m. Only a single cable runs from the sensor, connecting it to the RS485 interface of the H3 unit or to the H1 Hydro Logger.

View

Float switches

Float switches are used to monitor and control liquid levels. They enable the reliable activation of pumps and alarms in tanks, sumps, and industrial processes.

NIVOFLOAT NL-100, NW-100 - Float-Type Level Switches

NIVOFLOAT NL-100, NW-100 - Float-Type Level Switches

The NIVOFLOAT NL-100 series float switches are used to switch on and off at specified levels of both drinking water and wastewater. The double polypropylene housing ensures perfect watertightness, and cable lengths of 5, 10, or 20 m—available in PVC or neoprene—meet even the most demanding requirements. A mercury-free switch is built into the float and operates at a 45° angle. The NW-100 series was developed for extremely demanding applications; it features a robust design and a float volume nearly twice that of the NL series. Thanks to its larger volume, the float performs better in denser liquids. Another advantage of this series is that it functions even without a counterweight.

View

Level meters for wells, boreholes or retention tanks

Water level sensors for wells, boreholes, and retention basins are used to accurately measure water levels. They enable reliable monitoring and data logging for water management and environmental applications.

Level meters with signaling for tanks and fire trucks

Level gauges with alerts for tankers and fire trucks are used to measure and indicate liquid levels during transport and operation. They enable reliable, real-time monitoring of filling, consumption, and safe vehicle operation.

Hydrostatic level meters

Hydrostatic level gauges measure water level based on the pressure of the water column. They are suitable for monitoring water levels in wells, reservoirs, boreholes, and watercourses, and provide accurate and reliable data for long-term monitoring.

Hydrostatic level meters 4-20 mA output

Hydrostatic level transmitters with a 4–20 mA current output are used to accurately measure water levels and transmit this data to control systems. They are suitable for a wide range of applications in water management and industry, where reliability and compatibility with standard measuring devices are essential.

LMP307, LMP307i - Hydrostatic Level Gauges

LMP307, LMP307i - Hydrostatic Level Gauges

The submersible pressure level sensor is used for continuous level measurement. The sensor connects to telemetry stations either via 4–20 mA analog inputs (LMP307) or via an RS485 digital interface (LMP307i). A wide range of variants is available, enabling measurement in both clean water and heavily contaminated liquids. Measurement ranges are available from 0–0.6 m to 0–100 m of water column. When ordering, you must specify the required accuracy of the level meter (from 0.1 to 0.5% of the range), the housing design and diaphragm material, the length and material of the supply cable (PUR, PVC), and, last but not least, the current output type (1–5 mA, 4–20 mA, 0–20 mA, etc.). LMP307i level transmitters with an RS485 digital output are also available for order.

View
LMK809 - Hydrostatic Level Gauge

LMK809 - Hydrostatic Level Gauge

The LMK809 plastic submersible probe is designed for continuous measurement of the level of wastewater and corrosive media. The core component of this probe is a capacitive ceramic sensor.

View
LMK858 - Hydrostatic Level Gauge

LMK858 - Hydrostatic Level Gauge

The LMK858 plastic submersible probe is primarily designed for measuring the level of corrosive media. The probe can be used in dense media, such as sludge or other dense substances.

View

Hydrostatic level meters RS485 output

Hydrostatic level sensors with an RS485 output enable precise measurement of water levels and data transmission via digital communication. They are suitable for integration into telemetry and control systems where high reliability and durability are required.

LMP307, LMP307i - Hydrostatic Level Gauges

LMP307, LMP307i - Hydrostatic Level Gauges

The submersible pressure level sensor is used for continuous level measurement. The sensor connects to telemetry stations either via 4–20 mA analog inputs (LMP307) or via an RS485 digital interface (LMP307i). A wide range of variants is available, enabling measurement in both clean water and heavily contaminated liquids. Measurement ranges are available from 0–0.6 m to 0–100 m of water column. When ordering, you must specify the required accuracy of the level meter (from 0.1 to 0.5% of the range), the housing design and diaphragm material, the length and material of the supply cable (PUR, PVC), and, last but not least, the current output type (1–5 mA, 4–20 mA, 0–20 mA, etc.). LMP307i level transmitters with an RS485 digital output are also available for order.

View
TSH22 - Hydrostatic Submersible Level Gauge

TSH22 - Hydrostatic Submersible Level Gauge

The TSH22 is a precision submersible level sensor that provides digital output of water level and temperature via an RS485 interface.

View

Radar level meters

Radar level transmitters measure liquid level by detecting the reflection of a radar signal, even under challenging conditions such as steam, dust, or foam. They are suitable for accurate, noncontact measurements in tanks, sumps, and open channels.

Non-contact radar level meters

Non-contact radar level meters measure the level of liquids without physical contact with the substance being measured. They are suitable for accurate and reliable monitoring in demanding conditions, such as in tanks, sumps, or industrial facilities.

VEGAPULS C 11 - Radar Level Transmitter

VEGAPULS C 11 - Radar Level Transmitter

The VEGAPULS C 11 is an affordable radar level sensor designed as a higher-quality replacement for ultrasonic sensors, primarily in water supply and wastewater treatment. The sensor’s flood-resistant housing with an IP68 rating ensures long-term, maintenance-free operation.

View
VEGAPULS C 21 - Radar Level Transmitter

VEGAPULS C 21 - Radar Level Transmitter

The VEGAPULS C 21 is a highly accurate radar level sensor designed as a superior replacement for ultrasonic sensors, primarily in the water supply industry and for measuring the volume of discharged wastewater. The sensor’s flood-resistant housing with an IP68 rating ensures long-term, maintenance-free operation.

View
VEGAPULS C 23 - Radar Level Transmitter

VEGAPULS C 23 - Radar Level Transmitter

The VEGAPULS C 23 is a highly accurate radar level sensor with a measuring range of up to 30 m, suitable for water supply and industrial applications.

View
PiloTREK WP200 - Radar Level Sensors

PiloTREK WP200 - Radar Level Sensors

The main advantages of the PiloTREK W-200 radar level transmitters include, above all, high level measurement accuracy of up to ±2 mm with a virtually zero dead zone, a narrow beam angle, and a compact antenna design, which also makes installation easy. The 80 GHz technology enables reliable measurements even under challenging conditions, such as when steam is present above the liquid surface or in liquids with a gas cushion. The level transmitter uses FMCW (Frequency Modulated Continuous Wave) technology and enables the measurement of level, distance, volume, weight, and flow in open channels. The level transmitter can be configured via the service interface and HART communication, or via Bluetooth® and the MobileEView app.

View

Ultrasonic level meters

Ultrasonic level transmitters measure liquid level noncontact by detecting the reflection of an ultrasonic signal. They are suitable for measurements in tanks, sumps, and open channels, and provide accurate data without the need for direct contact with the liquid.

Ultrasonic level meters 4-20 mA output

Ultrasonic level transmitters with a 4–20 mA current output are used for noncontact measurement of liquid levels in tanks, sumps, and open channels. They offer reliable data transmission to control systems and easy integration into standard measurement applications.

SPA500 - Ultrasonic Level Transmitters

SPA500 - Ultrasonic Level Transmitters

The EasyTREK SPA series of integrated ultrasonic level transmitters provides affordable and reliable level measurement in sumps, tanks, and open channels.

View

Ultrasonic level meters RS485 output

Ultrasonic level transmitters with RS485 output enable noncontact level measurement and data transmission via digital communication. They are suitable for integration into telemetry and control systems where accuracy, reliability, and easy installation are required.

US1200, US3200, US4200 - Ultrasonic Level Transmitters

US1200, US3200, US4200 - Ultrasonic Level Transmitters

The US1200, US3200, and US4200 ultrasonic sensors measure liquid level and air temperature. They operate on the principle of measuring the time delay between the transmitted and received reflected ultrasonic pulses, with temperature-based correction.

View
Contact

Have a project or a question?

Free consultation - our specialists will help you choose the right solution for your project.