Continuous level control and point level detection

GF Piping Systems offers a wide range of technologies to measure levels in tanks either continuously or to detect point level thresholds. Due to the high diversity of process liquids and types of vessels, different methods are required to keep control of fluids – not only in piping systems but also in tank applications.

When the level matters

GF has the variety - you have the choice

When the level matters | GF has the variety - you have the choice

Always the right technology for you

Comprehensive

Complete offering of proven technologies and materials to cover individual requirements of each tank application. GF offers all components to design filling control systems from water to chemical tanks.

Easy

Integration is easily done thanks to universal interfaces. Simple commissioning onsite via display or PC configuration tool. One partner to cover all your requirements in tank level measurement.

Economical

Long lifetime assured. Industrial standard electronics, non-contact technologies embedded in high performance materials such as PP, PVDF, PTFE, PPS or stainless steel ensure long term reliable tank control.


Continuous level control

For continuous tank level detection, GF offers a variety of measurement technologies. Depending on application requirements and characteristics of the process liquid, either a non-contact or contact device can be utilized. GF level sensors provide accurate level information through analog or digital signals to ensure easy interfacing with programmable logic controllers (PLC).

Main applications:

  • Inventory management
  • Batching and dosing processes

Special application feature: Open channel flow measurement (Type 2260 & 2270)

Product catalog
Continuous level control
Radar technology

The radar principle is the most advanced measuring technology to measure tank levels even in challenging conditions such as in chemical fumes, pressurized tanks or light foams. Electromagnetic waves emitted by an antenna travel through the tank unaffected by fumes, changes of pressure, density, viscosity or temperature. In addition to this, radar beams have the ability to penetrate slightly conductive foams. Radar is widely unaff ected by process conditions.

Non-contacting radar level transmitter type 2290

Non-contacting radar is favored due to its safety and long-term reliability.

Non-contacting radar level transmitter type 2290

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Download our configuration software for 2290 / 2291 radar level transmitters.

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Guided radar level transmitter type 2291

In vessels containing heavily agitated liquids or dense
foam layers, the contacting guided radar is the an even
more reliable choice.

Guided radar level transmitter type 2291
Ultrasonic technology

This principle is based on the velocity of ultrasonic sound. Top-mounted, the sensor head emits a ultrasonic time taken impulse. The transit time of this burst is either reduced or extended and is proportional to the tank level. Since the speed of sound in air is fixed, an accurate calculation of the tank level can be made.

  • Most economical non-contacting solution to detect tank levels
  • No re-calibration required
  • Additional feature: Flow measurement in open channels

Non-contacting ultrasonic level transmitter type 2260 / 2270

The robust proven is the right choice in numerous tank applications. Easy installation, reliable operation.

Non-contacting ultrasonic level transmitter type 2260 / 2270

Download EView Software

Download our configuration software for 2260 / 2270 ultrasonic level sensors.

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Video: Type 2260 / 2270 Ultrasonic Level Sensors

Learn about the key features of GF type 2260/2270 in less than 2 minutes.

Type 2260 / 2270 Ultrasonic Level Sensors
Hydrostatic technology

Mounted through the tank wall or submersed from the top of the tank, a hydrostatic sensor measures the weight of a fluid column. The change and therefore the pressure at the sensor is proportional to the change in the tank level. A capillary tube in the cable ensures that changes of the atmospheric pressure can be compensated.

  • Hydrostatic level = height x specific gravity
  • Robust level technology
  • Easy to use
  • Can handle a wide range of liquids in vented tanks
  • Detects slightest changes in level accurately

Submersible hydrostatic level sensor type 2250 and side-mount type 2450

Unaffected by foam layers, agitation or chemical fumes. Superior chemical compatibility.

Submersible hydrostatic level sensor type 2250 and side-mount type 2450
Selection chart
Product overview - Continuous level control

Disclaimer

The contents of this guide are recommendations based on experiences. Make sure to consider all application specific conditions at all times such as chemical composition, temperature solids, foam, vapors, acoustics, etcetera of the medium during the selection process. GF Piping Systems cannot be held responsible for the selection and application of an unsuitable level control measuring device within a specific medium or a specific environment.


Point level detection

To maintain full control over the liquid level in tanks, point level switches can be used for a physical detection of critical filling levels. These instruments provide additional safety and control. They are often installed together with a continuous level sensor as a back-up system. They can also be used to directly control filling and emptying process.

Main applications:

  • Overfill protection
  • High and low level alarms
  • Pump control
  • Dry-run protection for pumps

Special application feature: Leakage detection in double containment piping systems or double-wall tanks

Product catalog
Point level detection
Vibration

Principle: Contact to liquids dampens the vibrating fork which activates the alarm contact.

Advantages

  • Proven method
  • PFA coating available
  • No moving parts, maintenance free
  • Easy wiring. Open collector or current output
  • ATEX certified

Conductive

Measures conductive process liquids. At desired levels the media acts as transmission media for a low-voltage. This way a relay provides point level feedback.

Advantages

  • Easy onsite installation and length adjustment
  • One sensor providing up to 4 point levels
  • Economical solution
  • PE coating available
  • Allows complete filling and emptying control of a tank
Float Switch

Guided float switch type 2282

The switch is mounted on the side of the vessel. A hinged plastic fl oat with a magnet floats up and down thrugh the liquid level. The encapsulated reed contact is operated by the magnet.

Advantages

  • Full plastic PP or PVDF
  • Compact design
  • Optimized for small vessels
  • High or low level activation
Guided float switch type 2282

Float switch type 2285

The type 2285 floats on top of the fluid being measured due to its relative density being less than that of water. The level switch is triggered when the internal contact reaches the +/- 45 from horizontal switching angle.

Advantages

  • Double chambered PP body
  • Lead free microswitch for use in drinking water
Float switch type 2285
Ultrasonic

The process liquid fills the gap which allows an ultrasonic pulse to pass between both fork arms. This activates the switch.

Advantages

  • Full plastic PPS housing
  • Reliable even in high viscosities
Selection chart
Product overview - Point level detection

Disclaimer

The contents of this guide are recommendations based on experiences. Make sure to consider all application specific conditions at all times such as chemical composition, temperature solids, foam, vapors, acoustics, etcetera of the medium during the selection process. GF Piping Systems cannot be held responsible for the selection and application of an unsuitable level control measuring device within a specific medium or a specific environment.


Bring it all together

Centralized tank control with the 9950 dual channel SmartPro transmitter

Centralized tank control

The modularity of the 9950 SmartPro not only allows it to display current tank levels but also to control a pump or a valve in emergency to prevent over or under filling conditions.

Product catalog
Multiple interfaces - tank logic control made easy

The 9950 Smart Pro offers two input channels which will accept all GF measurement sensors. The optional input/ output module (3-9950.393-3) is especially convenient to design a tank control loop. It offers 2 mechanical relays and 4 binary inputs – perfect fit for one or two continuous sensors and up to four point level switches giving you a total of six process inputs or, the second standard input can be used to connect any other GF sensor such as a fl owmeter or an analytical sensor.

Continuous level control

Choose any GF level sensor to connect to the 9950 or 9900 standard inputs via an iGo Signal Converter (3-8058-3). The clear visibility of the display informs operators about the current tank level and alarm status at a glance. Individually combine the continuous measurement with a mechanical relay, for example, to indicate a high alarm through a visual feedback or to open / close a valve. The 9950 or 9900 Smart-Pro also forwards the measurement to a PLC as a 4-20mA current signal pre-scaled on the transmitter either to tank level or volume.

Emergency shut-down / automatic refill

Connect any type of point level switch to the optional I/O module 9950.393-3 up to four binary inputs. The advanced Boolean logic allows a logical link between the status of the switches to the triggering of the mechanical relays. The 9950 or 9900 when equipped with an optional relay module can also be utilized to signal a pump to turn off in case of HI, or HI-HI alarm avoiding overfilling the tank, and in case of a LO, or LO-LO alarm to protect the pump from running dry.

Get more from your tank

The 9950 offers two inputs. The second input can be used to directly measure incoming or effluent flow. Or connect analytical sensors to measure e.g. pH, conductivity or salinity of the process liquids as quality indicators.

Technical features

The 9950 includes advanced features such as derived functions, advanced multiple relay modes, as well as calendar and time-based relay functions. Derived functions allow for the control of a relay or current loop with the sum, delta (difference), or ratio of two measurements, for example, delta pressure or delta temperature. The 9950 has a state-of-the-art microprocessor, dot matrix display, ¼ DIN size, NEMA 4X front face, dual power 12 to 24 VDC, or 100 to 240 VAC, calendar and clock function.

Product catalog

Measurement: Level
Measurement: Level

Brochure "When the level matters"

Brochure "When the level matters"
Product Brochure


EView Software

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Download our configuration software for 2260 / 2270 ultrasonic level sensors & 2290 / 2291 radar level transmitters.

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