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LEVEL METERS & LEVEL SENSORS
Level Sensor Technology & Guide
This page contains our level meter, level sensor and level switch products and videos. 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
ARLM-70 Series
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Radar Level Meters - Non-Contact / 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 | Manual | |||||||||
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Options: |
Depth - probe options: |
2 mm |
Model dependent: |
4 to 20 mA, |
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GRLM-70 Series
GRLM-70 Series
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Radar Level Meters - Guided Wave / 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 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 | Manual | |||||||||
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Options: |
Depth - probe options: |
2 mm |
Model dependent: |
4 to 20 mA, |
For FW ≤ 3.3: 
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CLM-70 Series
CLM-70 Series
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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 | Manual | |||||||||
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Options: |
Depth - probe options: |
≤ 1% (of range) |
18 to 36 V DC |
4 to 20 mA, |
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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 | Manual | |||||||||
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Options: |
Depth - probe options: |
≤ 0.15 % (of range) |
Model dependant: |
4 to 20 mA |
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ULM-54 Series
Video Manuals: settings
Direct
Indirect
ULM-54 Series
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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
Data Sheet
Mounting Accessory
| Display | Range | Accuracy | Power | Output | Manual | |||||||||
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N/A |
Depth - probe options: |
≤ 0.15 % (of range) |
18 to 36 V DC |
4 to 20 mA |
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ULM-53 Series
ULM-53 Series
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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
Data Sheet
Mounting Accessory
| Display | Range | Accuracy | Power | Output | Manual | |||||||||
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N/A |
Depth - probe options: |
0.15 % to 0.3 % |
Model dependant: |
Options: |
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Sensors / Probes
DLM-35 Series
DLM-35 Series
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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 | Manual | |||||||||
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N/A |
Depth - probe options: |
≤ 1% (of range) |
Model dependant: |
4 to 20 mA |
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DLS-35 Series
Video Manuals: quick
settings
Closed
Open
DLS-35 Series
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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 | Manual | |||||||||
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N/A |
Depth - probe options: |
≤ 1% (of range) |
Model dependant: |
4 to 20 mA |
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CLM-36 Series
CLM-36 Series
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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 | Manual | |||||||||
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N/A |
Depth - probe options: |
≤ 1% (of range) |
Model dependant: |
4 to 20 mA |
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RFLS-35 Series
RFLS-35 Series
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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)
- 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
| Status Indicators | Ambient Temperature Range | Power | Output | Manual | ||||||||||
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LEDs: |
-40°F to 176°F |
7 to 34 V DC |
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RFLS-28 Series
RFLS-28 Series
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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)
- 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
| Status Indicators | Ambient Temperature Range | Power | Output | Sizes | ||||||||||
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LEDs: |
-40°F to 176°F |
7 to 34 V DC |
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Switches
FLD-32 Series
FLD-32 Series
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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.
| State Indicator | Max. Vessel Wall Thickness | Switched Current | Power | |||||||||||
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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 |
See data sheet |
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GPLS-25 Series
GPLS-25 Series
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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 | |||||||||||
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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 |
See data sheet |
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CPS-24Series
CPS-24 Series
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Capacitive Proximity Switches
CPS-24 Series of proximity switches detects position or proximity of solid objects. It is designed for indication of the liquid level through non-conductive walls of vessels or on non-conductive gauge-pipes as well. It is excellent for liquid leakage detection in collection pits or directly on floors.
- Detect liquids in glass or plastic pipes, indicates liquid presence in inter-coat space of double coated tanks.
- Adjustable sensitivity
- NPN, PNP or NAMUR output
- LED state indicator
- Housing and attachment nut are stainless steel
- Version for usage in explosive areas: Xi
- Fixed cable or connector options
- 3-Year warranty
| State Indicator | Measurement Range | Switched Current | Hysteresis | |||||||||||
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LED on: output closed LED off: output open |
Sensitivity range: 0 to 10 mm, adjustable |
Switching current: N-type: 200 mA Max. switching frequency : 5 Hz |
5 to 15 % |
4 to 20 mA |
See data sheet |
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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.
Continuous Measurement - Solids
Continuous Measurement - Liquids
Limit Level Indication- Solids
Limit Level Indication- Liquids
Call Bristol Instruments on 877-866-8500 or email us for complete information including specifications or to discuss your application