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LEVEL METERS & LEVEL SENSORS

Level Sensor Technology & Guide

This page contains our level meter, level sensor and level switch products. These are based on radar, capacitive and ultrasound level sensor technology.

If you are uncertain of the best measurement technology for your application, each product series has a link to forms you can fill in describing your application, submit and we will get back with our recommmendation.

Additionally, download our free Level Measurement Guide here.

Meters

ARLM-70 Series
GRLM-70 Series radar level meters
ARLM-70 Series radar level meters
Radar Level Meters - Antenna Versions

ARLM-70 Series of FCWM antenna-based radar measurement level meters with display for continuous level measurement of various liquids, paste-like and bulk-solid materials. HART communication and diagnostics with Modbus. Indoor (OLED) and outdoor (LED) display options.

  • Current output
  • HART® communication option
  • Level measurement of liquids, pastes and bulk solids
  • Robust stainless steel or aluminum housings
  • Immediate view of the measured values on display
  • Measurement of aggresive vapors or in vacuum
  • 3-Year warranty
  • Continuously regulated transmit power for better close measurement range than competitive meters
  • Teaching function to filter out false reflections
  • Range up to 65 ft (20 m)
  • Measurements independent of temperature and pressure of atmosphere above surface of media
Display Range Accuracy Power Output Size

Options:
- OLED
- LCD
- Full lid / no display

Depth - probe options:
0.65 to 131 ft (200 to 40,000 mm)

2 mm

Model dependent:
18 to 30 V DC
18 to 33 V DC
18 to 36 V DC

4 to 20 mA,
HART
or
RS-485 / Modbus

See data sheet


GRLM-70 Series
GRLM-70 Series radar level meters
GRLM-70 Series radar level meters
Radar Level Meters - Electrode Versions

GRLM-70 Series of radar measurement level meters with display for continuous level measurement of various liquids, paste-like and bulk-solid materials. HART communication and diagnostics with Modbus. Indoor (OLED) and outdoor (LED) display options.

Stainless steel housing a for radar level meter
s steel housing b for radar level meter
s steel housing c for radar level meter

Stainless steel options for food, pharma and oher applications.

  • Curent output with HART® or RS-485 with Modbus
  • Level measurement of liquids, pastes and bulk solids
  • Stainless steel or aluminum housings
  • Radar level meter with guided wave (TDR)
  • Immediate view of the measured values on display
  • 3-Year warranty
  • Universal use, direct mounting into con- tainers, silos, vessels, reservoirs, etc.
  • Models with rod or rope electrodes
  • Measuring range up to 131 ft (40 m)
  • Xi, XiT versions for usage in explosive areas, or Xt, XtT versions for usage in flammable dusts areas
Display Range Accuracy Power Output Size

Options:
- OLED
- LCD
- Full lid / no display

Depth - probe options:
0.65 to 131 ft (200 to 40,000 mm)

2 mm

Model dependent:
18 to 30 V DC
18 to 33 V DC
18 to 36 V DC

4 to 20 mA,
HART
or
RS-485 / Modbus

See data sheet


CLM-70 Series
CLM-70 Series  capacitive level sensors
CLM-70 Series  capacitive level meters
Capacitive Level Meters

CLM-70 Series of intelligent capacitive level meters with display, HART communication and diagnostics. For continuous level measurement of liquids and bulk solids in all industrial branches.

A wide range of applications, direct installation in storage silos, hoppers, vessels, sumps, etc. Variants with fully coated electrodes for aggressive or electrically conductive media. Measured data in real time on the display.

Stainless steel options for food, pharma and oher applications.

  • HART® communication
  • Level measurement of liquids and bulk solids
  • Models with rope, rod or co-axial electrodes
  • OLED or LCD display options
  • Models with fully coated electrodes for aggressive or electrically conductive media
  • 3-Year warranty
  • Measured data in real time on the display
  • Current output 4–20 mA with HART communication
  • Full working range (no dead zone at beginning and end of the electrode)
  • Most applications, direct installation in storage tanks, vessels, silos, sumps etc.*
Display Range Accuracy Power Output Size

Options:
- OLED
- LCD
- Full lid / no display

Depth - probe options:
0.65 to 65 ft (200 to 20,000 mm)
Capacity: 0 to 3,000 pF

≤ 1% (of range)

18 to 36 V DC

4 to 20 mA,
HART

See data sheet


ULM-70 Series
ULM-70 Series ultrasonic level sensors
ULM-70 Series ultrasonic level sensors
Ultrasonic Level Meters

ULM-70 Series of ultrasonic level meters with display, feature HART communication and diagnostics. For continuous level measurement of liquid (even if polluted), mash and pasty / bulk-solid materials. For use in open or closed vessels, sumps, open channels, drains, etc.

  • HART® communication*
  • Easy adjustment without measured material
  • Quick view measured values on the display
  • Elimination of false echoes
  • Zone temperature compensation
  • 3-Year warranty
  • Curent output with HART or RS-485 with Modbus
  • Possibility of using in explosive areas (version Xi)
  • While used with horn adapter can be measured also some difficult media (foamy levels, bulk solids, etc.)
Display Range Accuracy Power Output Size

Options:
- OLED
- LCD
- Metal lid / no display

Depth - probe options:
0.5 to 65 ft (0.15 to 20 m)

≤ 0.15 % (of range)

Model dependant:
18 to 30 V DC
18 to 36 V DC

4 to 20 mA
HART protocol
or
RS-485 / Modbus

See data sheet


ULM-54 Series
ULM-54 Series outdoor ultrasonic level sensors
ULM-54 Series outdoor ultrasonic level sensors
Ultrasonic Level Meters For Outdoor Use

ULM-54 Series of ultrasonic level meters with display is designed for continuous non-contact water level measurement in outdoor applications - rivers, canals, sumps, liquid and slurry, pastes and bulk materials.

  • HART® communication
  • Remote installation and communication
  • Flexible installation with design of connection via lower or upper thread
  • Intelligent signal processing to eliminate false reflections
  • Choice of connection using a standard cable gland or a gland for protective hoses
  • High ingress protection: IP68
  • Possibility of using in explosive areas (version Xi)
  • When used with directional funnel reception of the reflected echo can be increased to measure problematic media (foaming levels, loose materials, etc.)
  • 3-Year warranty

ULM-54 data sheet

Data Sheet

Mounting Accessory

Display Range Accuracy Power Output Size

N/A

Depth - probe options:
0.5 to 32.8 ft (0.15 to 10 m)

≤ 0.15 % (of range)

18 to 36 V DC

4 to 20 mA
HART protocol

See data sheet


ULM-53 Series
ULM-53 Series ultrasonic level sensors
ULM-54 Series outdoor ultrasonic level sensors
Ultrasonic Level Meters

ULM-53 Series of ultrasonic level meters are designed for continuous non-contact level measurement of liquids (even if polluted), paste and mash materials in open or closed vessels, open channels and sumps

  • RS-485 output with Modbus protocol
  • Configuration and adjustment of min. and max. measuring range by two buttons
  • Output options:
    4 to 20 mA, 0 to 10 V or RS-485 / Modbus
  • Easy and quick installation by connector
  • LED state indication
  • Xi version for usage in explosive areas
  • Electric connection options:
    connectors, cable glands or protective conductor
  • 3-Year warranty

ULM-53 data sheet

Data Sheet

Mounting Accessory

Display Range Accuracy Power Output Size

N/A

Depth - probe options:
4 in to 65 ft
(0.1 to 20 m)

0.15 % to 0.3 %
(depending on range)

Model dependant:
12 to 30 V DC
12 to 36 V DC

Options:
4 to 20 mA
0 to 10 V DC
RS-485 with Modbus protocol

See data sheet


Sensors / Probes

DLM-35 Series
DLM-35 Series  capacitive level probes
DLM-35 Series capacitive level probes
Capacitive Level Probes

DLM-35 Series of capacitive level probes are designed for continuous level measurement of liquid and bulk-solid materials.

  • Analog output options
  • Level measurement of liquids and bulk solids
  • Direct mounting into tanks, vessels, sumps or silos and hoppers
  • Easy level settings using magnetic pen and LED indicators on probe - without having to completly empty the tank
  • 3-Year warranty
  • Linear measurement even in non- conductive or variously shaped vessels
  • Two LEDs indicate function and status of level meter
  • Housing, electrodes and reference tubes made from stainless steel
  • Options with with coated electrode for aggressive or electrically conductive media
Display Range Nonlinearity Power Output Size

N/A

Depth - probe options:
4 in to 19.7 ft (0.1 to 6 m)

≤ 1% (of range)

Model dependant:
9 to 34 V DC
12 to 34 V DC

4 to 20 mA
or
0 to 10 V DC

See data sheet


DLS-35 Series
DLM-35 Series  capacitive level probes
DLM-35 Series capacitive level probes
Capacitive Level Sensors

DLS-35 Series of capacitive level probes are designed for continuous level measurement of liquid and bulk-solid materials.

  • Analog output options
  • Level measurement of liquids and bulk solids
  • Direct mounting into tanks, vessels, sumps or silos and hoppers
  • Easy level settings using magnetic pen and LED indicators on probe - without having to completly empty the tank
  • 3-Year warranty
  • Limit sensing
  • High immunity to electromagnetic interference (EMI)
  • Two LEDs indicate function and status of level meter
  • Housing, electrodes and reference tubes made from stainless steel
  • Mode for quick sensor setting without presence of medium
Display Range Nonlinearity Power Output Size

N/A

Depth - probe options:
4 in to 19.7 ft (0.1 to 6 m)

≤ 1% (of range)

Model dependant:
9 to 34 V DC
12 to 34 V DC

4 to 20 mA
or
0 to 10 V DC

See data sheet


CLM-36 Series
CLM-36 Series capacitive level sensors
CLM-36 Series capacitive level sensors
Capacitive Level Sensors

CLM-36 Series of capacitive level sensors are designed for continuous level measurement of liquids and bulk solid materials.

  • Analog output options
  • Direct mounting into containers, silos, vessels, basins, reservoirs, etc
  • Options with rope— or coated — electrode for aggressive and electrically conductive medium
  • Linear measurements even in nonconductive and differently shaped vessels

  • Options for usage in explosive areas, high temperature performance
  • 3-Year warranty
Display Range Nonlinearity Power Output Size

N/A

Depth - probe options:
8 in to 65 ft (0.2 to 20 m)
Capacity ranges:
20; 30; 50; 100; 150; 300;
500; 1000 pF

≤ 1% (of range)

Model dependant:
9 to 36 V DC
18 to 36 V DC

4 to 20 mA
0 to 10 V DC
0 to 5 V DC (min. qty.)

See data sheet


RFLS-35 Series
CLM-36 Series capacitive level sensors
CLM-36 Series capacitive level sensors
High Frequency Level Sensors for Pastes, Liquids and Slurries

RFLS-35 Series of high frequency level sensors are designed for reliable level measurement of pastes, slurries and liquids. They are designed to resist or eliminate deposits and foam on the electrode.

  • Media-specific sensitivity
  • Resistant to adhesion of viscous and sticky media
  • Unique function for media recognition: "Medium window" (sensor is sensitive only to set medium and does not react to substances with a lower or higher permittivity)
RFLS-35 closeup c
  • Excellent replacement for vibration level sensors
  • Direct mounting into tanks, vessels, sumps, pipes or funnels and containers
  • Options for usage in explosive areas, and mining where coal dust and methane exposure cn occur
  • 3-Year warranty
RFLS-35 closeup w
Status Indicators Ambient Temperature Range Power Output Sizes

LEDs:
Green and Orange

-40°F to 176°F

7 to 34 V DC

  • PNP
  • NAMUR (versions Xi, XiM)

See data sheet


RFLS-28 Series
CLM-36 Series capacitive level sensors
CLM-36 Series capacitive level sensors
High Frequency Level Sensors for Pastes, Liquids and Slurries

RFLS-28 Series of high frequency level sensors are designed for reliable level measurement of pastes, slurries and liquids. They are designed to resist or eliminate deposits and foam on the electrode.

  • Media-specific sensitivity
  • Resistant to adhesion of viscous and adhering media (ketchups, yogurts, spreads, syrups, creams, pastes, cleaning agents, etc.)
  • Unique function for media recognition: "Medium window" (sensor is sensitive only to set medium and does not react to substances with a lower or higher permittivity)
RFLS-28 tank-static
  • Excellent replacement for vibration level sensors
  • Direct side mounting with front thread (FG, FN versions)
  • Vertical mounting (RG, RN versions–with or without tubular extender TN-28)
  • 3-Year warranty
RFLS-28 tank-dynamic
Status Indicators Ambient Temperature Range Power Output Sizes

LEDs:
Green and Orange

-40°F to 176°F

7 to 34 V DC

  • PNP

See data sheet


Switches

FLD-32 Series
GPLS-25 Series thru-wall level switches
CLM-36 Series capacitive level sensors
Thru-Wall Level Switches

FLD-32 Flexi Watch Series of thru-wall level switches are designed for limit level sensing of liquids on non-conductive glass or plastic tubes, gauge-pipes and tanks.

  • Affix directly or strap to vessel.
    See photo & data sheet.
  • Point level detection
  • Housing bends to vessel shape
  • Electronic switch (S) output
  • LED state indicator
  • 2-wire ouput
  • Fixed cable
  • Evaluation units available:
    DSU-1222-W or SDSU-222-W regulated supply units for low and high level control for two limit level sensors.
FLD-32 mountng option
State Indicator Max. Vessel Wall Thickness Switched Current Power

Orange: s/w ON

Unlit: s/w OFF

Conductive liquid: 8 mm

Non-conductive liquid: 3 mm

Output type P: 100 mA

Output type S: 3.3 / 40 mA

6 to 30 V DC

4 to 20 mA
0 to 10 V DC
0 to 5 V DC (min. qty.)

See data sheet


GPLS-25 Series
GPLS-25 Series thru-wall level switches
CLM-36 Series capacitive level sensors
Thru-Wall Level Switches

GPLS-25 Series of thru-wall level switches are designed for limit level sensing of liquids on non-conductive glass or plastic tubes, gauge-pipes and tanks.

  • Shape adapted or flat mounting surface options.
    See data sheet.
  • Point level detection
  • Compact size: 40 (h) x 25 (w) mm
  • Electronic switch (S) or PNP (P) output
  • LED state indicator
  • 2-wire ouput to relay circuit or binary control input
  • Fixed cable or connector options
  • Evaluation units available
  • 3-Year warranty
State Indicator Max. Vessel Wall Thickness Switched Current Power

Orange: s/w ON

Unlit: s/w OFF

Conductive liquid: 8 mm

Non-conductive liquid: 3 mm

Output type P: 100 mA

Output type S: 3.3 / 40 mA

6 to 30 V DC

4 to 20 mA
0 to 10 V DC
0 to 5 V DC (min. qty.)

See data sheet


Product / Feature Selector Guides

These fill-in-the-blanks PDF forms let you describe your specific application by media type (solid, liquid) and continuous level measurement or limit level indication.

Steps:
1) Just download a form for your application type.
2) Fill in / select items in form, then save the file.
3) Upload the completed form.

Send a form to us using the Upload Completed Form, then Submit buttons below and we will respond with our recommendation for measurement technology, model and options to best fit your application.

CLM-36 data sheet

Continuous Measurement - Solids

CLM-36 data sheet

Continuous Measurement - Liquids

CLM-36 data sheet

Limit Level Indication- Solids

CLM-36 data sheet

Limit Level Indication- Liquids

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