Point Level / Multi-Point Levels Level Transmitters
Description
Point Level / Multi-Point Levels Level Transmitters are devices designed to detect and indicate the presence or absence of a material at specific points within a container. These transmitters are typically used to mark a particular level and communicate whether the media is above or below that level. They can be integrated into a single device to provide multiple point detections, such as high and low alarms, or to function as a stepped version of a continuous level measurement system.
Working Principle
Point Level / Multi-Point Levels Level Transmitters operate by marking specific levels within a vessel and providing a signal when the media reaches these points. This is achieved through various sensing technologies, such as capacitance, ultrasonic, or float-based systems, which detect the presence of a material at the designated points. These transmitters are useful because they provide a simple and reliable method for monitoring critical levels, ensuring that processes remain within safe operating limits and preventing overflows or dry runs.
Applications
Point Level / Multi-Point Levels Level Transmitters are commonly used in applications where it is crucial to maintain specific levels of materials. For example, they are used in storage tanks to trigger alarms when the liquid reaches a high or low threshold, preventing overfilling or running dry. They are also employed in industrial processes where maintaining a certain level of a substance is critical for safety or quality control, such as in chemical processing or food and beverage production.
Advantages over other Level Transmitters
One advantage of Point Level / Multi-Point Levels Level Transmitters is their simplicity and reliability in providing discrete level detection. Unlike continuous level sensors, which measure over a range, point level sensors offer precise detection at specific points, making them ideal for applications requiring high and low alarms. Additionally, they can be more cost-effective and easier to install and maintain compared to more complex continuous level measurement systems.
Limitations
A limitation of Point Level / Multi-Point Levels Level Transmitters is that they do not provide continuous level measurement, which can be a drawback in applications requiring detailed monitoring of level changes. They are also limited to detecting levels at predefined points, which may not be suitable for processes needing real-time level tracking across a range.
Considerations
When selecting Point Level / Multi-Point Levels Level Transmitters, it is important to consider factors such as initial costs, operating expenses, and maintenance requirements. These transmitters are generally more affordable than continuous level sensors, but their suitability depends on the specific application needs. Durability and accuracy are also critical considerations, as the sensors must withstand the process environment and provide reliable level detection. Replacement and maintenance costs should be evaluated, especially in harsh conditions where sensor longevity may be a concern.
from Sierra Instruments, Inc.
Overview. The InnovaSwitch insertion-type level switch is a high-performance, industrial-grade liquid level indicator for tanks and process vessels. This product switches on level changes as small as 0.03 inch (0.8 mm) on dry-to-wet and wet-to-dry occurrences in a tank or vessel. The instrument was... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogVoltage; AnalogCurrent; Alarm / Visual Indicator
- Media Type: Liquid
- Measuring Range: 0.5000 to 120
from ABB Measurement & Analytics
Features: High accuracy: 0.01% of full scale or + 1.27mm. Never requires re-calibration: set it & forget it. Superior Sensor (Patent #5,473,245). Local indication with HMI display. Dual compartment housing with separate field. terminal compartment. Loop powered to 22m (75ft) probe length. Total... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid
- Maximum Operating Pressure: 2400
from ABB Measurement & Analytics
The transmitter ’s microprocessor simultaneously fires an electronic pulse to the transducer and starts a timer. The transducer converts this electronic pulse to an acoustic pulse, which is directed toward the surface of the material being measured. When the acoustic pulse contacts the surface... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Operating Temp: -4 to 149
- Media Type: Liquid
- Meter Technology Type: Ultrasonic/Sonic
from Massa Products Corporation
The company specializes in designing and manufacturing the highest quality level sensors that are ideal for non-contact distance measurement in even the harshest environments. Massa produces several different series of level sensors and monitoring transmitter modules that provide reliable continuous... [See More]
- Level Measurement Type: Continuous Level; Single Point or Multi-Point Level
- Output Options: AnalogVoltage (optional feature); AnalogCurrent (optional feature)
- Media Type: Liquid; Dry material (Bulk solids and powders)
- Meter Technology Type: Ultrasonic/Sonic
from Siemens Process Instrumentation
SITRANS LR560 is a 2-wire, 78 GHz FMCW radar level transmitter for continuous monitoring of solids in silos to a range of 100 m (328 ft). SITRANS LR560 ’s plug and play performance is ideal for most solids applications, including those with extreme dust and high temperatures to +200 ºC... [See More]
- Level Measurement Type: Continuous Level; Single Point or Multi-Point Level
- Measuring Range: 3937
- Media Type: Dry material (Bulk solids and powders)
- Maximum Operating Pressure: 43.5
from PMC Engineering LLC
The model DS series (Dip Stick Level Probe) transmitter is designed for top mount locations in tanks. This unit is ideal for installation in mixing, blending, white water tanks and wastewater treatment locations. Supplied with either a 1" (Miniature) or 1 1/2" ceramic diaphragm sensor the Dip Stick... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid
- Measuring Range: 0.0 to 5
from Automation Products, Inc.
The Type CL-10DJ Dynatrol ® Level Switch is designed for application to either high or low point level detection of bulk solids. Reliable operation can be achieved with this level control in problem applications where other types of controls may fail to operate at all. Versatile: This control is... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogVoltage
- Media Type: Dry material (Bulk solids and powders)
- Maximum Operating Pressure: 1000
from Monitor Technologies LLC
Electrical isolation for reliable operation, sensor electronics meet CE1010 [See More]
- Level Measurement Type: Continuous Level; Single Point or Multi-Point Level
- Output Options: AnalogVoltage; AnalogCurrent; Alarm / Visual Indicator
- Media Type: Liquid; Dry material (Bulk solids and powders)
- Measuring Range: ? to 1800
from Sitron
The SC404 is a capacitance continuous level transmitter with an integrated electronics module mounted within the nylon or aluminum housing. This 2 wire loop powered unit provides a 4-20mA output with set up and calibration achieved with a zero and span adjustment. This flexible level measurement... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid; Dry material (Bulk solids and powders)
- Maximum Operating Pressure: 290
from Winland Electronics, Inc.
Winland offers three WaterBug ® models for dependable water detection. Ideal for basement sump pumps, drain storage areas, computer rooms, document storage areas, warehouses and sprinkler systems. WaterBug ® sensors work by forming a conductive bridge between to contacts. Use in... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Operating Temp: 32 to 140
- Media Type: Liquid
- Meter Technology Type: Electrical Conductivity or Resistance
from KOBOLD Instruments, Inc.
Product Features. 2 Wire Interface. SS Sensor. No Moving Parts. Position Independent. Visible Switch Condition. User Selectable Switch Logic. Good to 270 °F. NEMA 4X. KOBOLD's NQ is a compact, ultrasonic level switch which activates when immersed in liquid. Its short intrusion length (1.42... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Maximum Operating Pressure: 1000
- Media Type: Liquid
- Material Temperature Range: -40 to 270
from Micronics, Ltd.
Features. Low Cost. Isolated 4-20mA Output (1000 ohm). Large LCD Display. Programmable Signal Relay. Non-Contacting Ultrasonic Sensor or Optional Pressure Sensor. Built-in 2-Key Calibrator. Watertight, Dust tight Enclosure. Self-Testing. [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid
- Measuring Range: 384
from JOGLER, Inc.
Jogler ’s ILT-6000 series level transmitter is the latest in magnetostrictive sensing technology designed for direct tank insertion. The ILT-6000 contains a low profile waveguide that is inserted into a waveguide sleeve (thermowell) and float assembly. The waveguide sleeve isolates the... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid
- Measuring Range: ? to 300
from OMEGA Engineering, Inc.
The LVU30 Series of RoHS Compliant low-cost ultrasonic sensors that produce detection ranges from as close as 100 mm (4") to greater than 4.5 m (15'). Incorporating state-of-the-art ultrasonic technology, the sensors provide precision non-contact distance measurement for factory automation or... [See More]
- Level Measurement Type: Continuous Level; Single Point or Multi-Point Level
- Measuring Range: 4 to 180
- Media Type: Liquid
- Operating Temp: -4 to 149
from Automation Products, Inc.
The Dynatrol ® GSS Level Detector is designed for application to either high, intermediate, or low-point level detection of bulk solids. The GSS Level Detector is constructed to handle extremely light weight applications that are difficult to measure or detect a reading. Reliable operation can... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogVoltage
- Media Type: Dry material (Bulk solids and powders)
- Maximum Operating Pressure: 1000
from Sitron
The SC404 is a capacitance continuous level transmitter with an integrated Galvanic Isolator and electronics module mounted within the Large aluminum housing. This 2 wire loop powered unit provides a 4-20mA output with set up and calibration achieved with a zero and span adjustment. This flexible... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid; Dry material (Bulk solids and powders)
- Maximum Operating Pressure: 290
from Winland Electronics, Inc.
Winland offers three WaterBug ® models for dependable water detection. Ideal for basement sump pumps, drain storage areas, computer rooms, document storage areas, warehouses and sprinkler systems. WaterBug ® sensors work by forming a conductive bridge between to contacts. Connect up to 8... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: Alarm / Visual Indicator
- Media Type: Liquid
- Operating Temp: 32 to 140
from KOBOLD Instruments, Inc.
Product Features. Small and Compact. No Wear Components. Unaffected by External Vibrations. Works with Many Liquids. User Selectable Switch Logic. KOBOLD's NWS level switch works on the vibrating tuning-fork principle. A piezoelectric crystal is matched to the frequency of a tuning fork in air, and... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Maximum Operating Pressure: 650
- Media Type: Dry material (Bulk solids and powders)
- Meter Technology Type: Vibrating/Tuning Fork Method
from JOGLER, Inc.
Jogler ’s MGT-6000 series level transmitter is the latest development in magnetostrictive liquid level sensing technology that is designed exclusively for magnetic level indicators. The MGT-6000 contains a low profile waveguide that is mounted away from the level gage chamber. This design... [See More]
- Level Measurement Type: Single Point or Multi-Point Level
- Output Options: AnalogCurrent
- Media Type: Liquid
- Measuring Range: ? to 240