Focus on level

Magnetostrictive measuring system 

Products July-Aug img 1

The BTL7-T500 has a range of applications and operates safely in explosion hazardous areas of Zone 0 and Zone 1. This means, for example, it can also be used for continuous level measurement in refinery tanks.

It has a Profibus interface for flexibility, and the position measuring system can be adapted. A single cable suffices for hookup (bus-in-out, power). The noncontact magnetostrictive measuring system in the stainless-steel housing with IP67 protection is insensitive to contamination, and also shock rated to 100 g. It withstands vibration up to 12 g.

BTL linear magnetostric­tive trans­ducers in the rod style, installed in hydraulic cylinders, have for decades operated reliably in demanding application areas. The magnetostrictive operating principle allows it to be installed in hermetically sealed housings; the position information is transmitted without contact via magnetic fields through the housing wall into the interior of the sensor.
Balluff
www.balluff.com

Heartbeat Technology for transmitters

The Heartbeat Technology with Liquiline CM44 and CM44R transmitters is for use with Memosens pH and conductivity sensors. Heartbeat diagnostics' continuous analysis of transmitter/sensor system health during operation helps companies recognize related events when they occur. The diagnostics follow the NE-107-standardized, NAMUR-compliant message structure for categorized event severity levels with remedy instructions provided for operations or maintenance.Products July-Aug img 2

Monitoring minimizes the probability of a sudden breakdown or failure of the measurement point and helps define when maintenance is needed. For example, detecting increased glass impedance in the pH sensor may indicate broken glass. In a conductivity sensor, if the coil current is out of range, there may be a short circuit or broken wire in the sensor.

Heartbeat Verification permits a measurement point to be assessed at any time in situ, without removing the sensor or shutting down the process. This qualitative function checks the entire measurement loop, verifying sensor and transmitter performance. Verification results are provided via an audit safe report that the transmitter automatically generates. The report is saved in PDF format and can be preserved on an SD card for transfer to a computer. These reports can be used for regulatory, quality or safety documentation.

When the Liquiline transmitter is connected to a PLC, SCADA, or distributed control system via fieldbus digital communications, Heartbeat Technology gives the host system a range of sensor information that can be combined with process data to identify trends. This information, along with key performance indicators, can be used for process optimization and predictive maintenance. The monitoring information is available over Profibus DP, EtherNet/IP, Modbus TCP, or Modbus 485 protocols.

The monitoring technology is now available as an option in Liquiline CM442, CM444, and CM448 transmitters and all DIN-rail mount versions. It works with Memosens pH and conductivity sensors and Liquistation CSF34 and CSF48 samplers. In the future, it will be available in oxygen, turbidity, nitrate, chlorine sensors, and Liquiline System CA80 analyzers.
Endress+Hauser
https://www.us.endress.com/en

Wired HART vibrating-fork level detectorProducts July-Aug img 3

The Rosemount 2140 is a wired HART vibrating-fork level detector. With smart diagnostics and remote proof-testing capability, the device detects level while helping increase safety and efficiency of both plant and workers. The detector is suitable for applications with high temperatures and harsh conditions and operates with flow, bubbles, turbulence, foam, vibration, sediments content, coating, liquid properties and product variations. It can be used to monitor not only liquids but also liquid-to-sand interface, which enables the buildup of sand or sludge deposits in a tank to be detected.

Compatible with the HART 5 and HART 7 hosts, the detector enables operators to continuously monitor electronic and mechanical health. Frequency profiling functionality immediately detects any buildup, fork blockage, or excessive corrosion, indicating maintenance may be required and allowing it to be scheduled during periods of downtime. In addition, power advisory functionality monitors voltage and current drawn over the device's lifetime with a process alert for potential problems, such as corrosion.

An optional integral LCD display shows switch output states and diagnostics, so an operator can inspect the device locally. Also, selectable media density and media learn functions help configure appropriate density settings to calculate and maintain consistent switching points in fluids of unknown properties, so the device always switches.
Emerson Rosemont
www.emerson.com 


Rotary paddle bin level indicator

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The SE3 series rotary paddle bin level indicator is for point-level switch applications of bulk solids, including powder and granular materials. This rotary paddle unit has a powder-coated aluminum enclosure rated IP65 and NEMA 4X and available local LED indication. The SE3 compact rotary paddle unit is available in a variety of configurations, including standard, high temperature, and reinforced shaft extended versions to handle applications in many industries.

All units are available with a choice of power supplies, including 110 VAC, 220 VAC, 240 VAC, 24 VAC, and 24 VDC. Paddle options include polycarbonate and stainless-steel paddles. All units include a prewired electrical cable. Standard length is 11.8 in (300 mm), and it can be provided in lengths up to 16.4 ft (5 m). The SE3 compact rotary paddle bin level indicator is suitable for small hoppers and bins.
Aplus Finetek
http://aplusfine.com


Level switches

The LBFH and LBFI level switches with IO-Link and ATEX approval have IO-Link interface, so the user can automate the configuration of sensors. ATEX also enables the use of commercially available barriers. The sensors are suitable for hygienic and industrial applications.Products July-Aug img 5

Because of the IO-Link integration, the level switches are Industry 4.0 ready. With the communication interface, each application can be configured using standard network components. This ensures duplication of the system and device replacement without additional programming. Diagnostic data can be called up and evaluated at any time.

The LBFH and LBFI level switches meet the criteria for ATEX categories 1 and 2 for gas and dust. The reduced current consumption of their electronics means that standard barriers can now be used in addition to the company's barriers, helping them integrate into existing plants.

Two switching outputs make it possible to set independent trigger thresholds. This means two different process steps, such as production and cleaning, or two media groups, such as water and oil, can be monitored with one sensor. Additionally, the two switching outputs facilitate a plausibility check of the sensor. A complementary trigger point setting ensures wire breaks are reliably detected, thus guaranteeing effective monitoring of all programs.

Both variants are suitable for use in temperatures up to 135°C, while the variant for hygiene applications also has SIP capabilities.
Baumer
www.baumer.com/us/en

Products July-Aug img 6

Level transmitters

The K-TEK LMT series of magnetostrictive level transmitters increases the ease of use, safety, and reliability of the AT series of transmitters. The LMT has a two-wire common transmitter, an integrated setup menu, advanced diagnostics with waveform display, and signal conditioning.

The LMT is available as an insertion style "wetted" transmitter (LMT100) with probe lengths up to 22.86 m (75 ft) in length, or as an externally mounted, nonintrusive version (LMT200) for use with the KM26 magnetic level gauge or any other float and level chamber.

The LMT200 externally mounted transmitters provide users with installation flexibility and modification. They can be changed from top to bottom mount or from left of chamber orientation to right with no modification of equipment required. The first phase of the LMT series comes with 4-20 mA HART output. Later phases will be available with FOUNDATION Fieldbus and Profibus PA.
ABB
www.abb.com