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OIL & GAS – Refinery automation

PHASE SEPARATION

SensoTech’s LiquiSonic® is an inline analytical system for determining the concentration in liquids directly in the running process without delay. The device is based on meticulous measurement of the absolute sonic velocity and process temperature allowing for the detection of phase transitions.

 Phase separation in pipelines

The accurate detection of various phases in a pipeline is necessary for several industries. Often multiple products flow through the same pipe, but every single product is supposed to end in a different location. In applications in which product A is discharged by product B, the intermediate phase is to be separated.

Safety aspects are closely connected in applications with high-risk potential. In particular, the monitoring in multi-fuel pipelines for the petrochemical industry provides not only data about the product quality (incoming goods), but also avoids incorrect filling of storage tanks and thus serious accidents.

In the petrochemical industry, contrasting fuels are conveyed over long distances in just a pipeline. Here the rapid detection of the different products as well as the quality monitoring is focused.

 Phase separation in batch processes

In batch processes, the product phases are separated due to the physical and chemical properties of each product.

Application example: biodiesel/glycerol

In the manufacture of biodiesel, glycerol is produced as a by-product. The mixture of the two substances is conveyed in large settling tanks and then has several hours to separate. The LiquiSonic® sensors are usually installed into the outlet of the tank. By the detection of the phase transitions, the valve is activated and the biodiesel and the glycerol are supplied to the processing. The intermediate phase returns to the separation process.

 Phase separation in continuous processes

In a continuous process, one or more sensors control the separation of a process stream. In this instance, only the phase-specific value of sonic velocity is monitored and kept constant.

Frequently, the product concentration of the carrier phase varies in the inlet. This quickly shifts the height of the phase boundary. Thus, the carrier phase could be pulled off with the product, which greatly affects the purity. In process the separation is made via one pump in each of the two outlet pipes.

The advantages of the LiquiSonic® measuring and analyzing technology are both the rapid response time of less than 1 s and the connection of up to four sensors to only one LiquiSonic® controller. The controller processes all measuring values and passes the data to the process control system. Depending on the type of vessel and process objectives different installation

variants are possible.

Outlet valve (BOV) with integrated LiquiSonic® sensor

Hygienic limit switches for processes

Hygienic limit switches for processes

Hygienic limit switches for processes

February 2020 Maintenance, Test & Measurement, Calibration

Hygienic limit switches for processes

Process and storage vessels incorporate Hygienic limit switches to prevent overfilling of a tank or vessel (full indicator) or dry running of a pump (empty indicator). Anderson-Negele’s NCS series are ideally suited for the reliable measurement of limits in media with low water content, such as certain alcohols and cosmetics, providing universal application in bottling and pharmaceutical applications.

Capacitive working principle

Anderson-Negele level switches operate on the basis of the capacitive working principle. The measuring electrode, the medium and the conductive wall of the tank form an electrical capacitor influenced by three main factors: distance; area of the electrode surfaces; and type of medium between the electrodes.

The measuring electrode and the tank wall serve as the capacitor plates while the medium acts as the dielectric fluid. Due to the higher dielectric constant of the medium relative to air, the capacity increases when the electrode is immersed in the medium. Exposing the electrode has the opposite effect. The change in capacity is analysed by the level switch and converted to a corresponding switching command. The sensor outputs a 24 V DC signal (active output). The minimum and maximum (full/empty) switching functions can be swapped by reversing the polarity of the power supply. The capacitive working principle requires that the sensor tip, which is made of PEEK, be completely immersed in the medium. The advantage is that the sensor does not respond to foam or adherences and a signal is emitted only when the medium reaches the level. Capacitive measurement is most reliable when the dielectric conductivity and temperature of the medium are constant. Changes in the outer conditions are generally non-critical in media with high dielectric constant values.

Contact us for more information

High-speed level measurement

High-speed level measurement

High-speed level measurement

February 2020 Level Measurement & Control

Morton Controls in partnership with Anderson-Negele has introduced the innovative NSL-F High-speed level measurement sensor based on a modular device platform. The new platform strategy used with this sensor is based on a building-block principle that offers great flexibility in the assembly of individual sensor components.

Users benefit from the advantages of the system and profit from the reliability with which these sensors provide measurements, even in strongly adhesive and foaming media. For example, the device will accurately display that a tank is empty even in the presence of substantial foam. Due to the short response time, highly accurate metering processes can be reliably realised with the NSL-F – even with alternating and pasty media.

Anderson Negele’s specific Flex-Hybrid technology allows for easy operation of the sensor with either digital IO-Link or analog 4-20 mA technology, as well as in parallel with both interfaces. Other features include:

• Status control and sensor diagnosis for preventive maintenance and avoidance of production downtime.

• Interference-free plug-and-play technology with standard cable for time and cost-saving installation and commissioning.

• Uniform configuration for all sensors without the need for company-specific programming adaptors.

• Easy sensor replacement: automatic detection, configuration and parameterisation when plugged in.

Applications include continuous level monitoring in metallic vessels up to 3 m in height, level monitoring in feed vessels suited for adhesive and pasty media, level measurement in storage tanks of foaming media, and content measurement in pressurised vessels.

Contact us for more information

Reliable empty alarm in cosmetics tank

Reliable empty alarm in cosmetics tank

Economy and ecology in harmony through automatic monitoring of the filling line – Reliable empty alarm in cosmetics tank with NCS-L-12/18   

For over 60 years, the French brand Yves Rocher has been synonymous with high-quality cosmetics based on vegetable raw materials. The company is strongly committed to ecological issues and biodiversity. Even small factors such as the optimal use of raw materials play a role.

  1. The application

The filling systems for cosmetic creams were previously controlled manually. The filling level in the buffer tank had to be monitored by an employee and the filling process had to be stopped manually at the appropriate moment.

In order to prevent the filling pump from running dry, the process was stopped for safety reasons at an early stage, leaving important quantities of cream in the tank. This residual product was then disposed of, resulting in a significant loss of value.

Application advantages

  • Significantly lower product losses due to optimal emptying of the tank during filling
  • Precise measurement results despite high viscosity of the cream and corresponding adherences to the sensor probe
  • No manual control and monitoring required
  • Fast amortization through reduction of product losses and time savings for employees
  1. The solution

With the NCS-L level sensor, the filling process is automated. Due to its special sensor shape with 18 mm length and its measuring method with an extended measuring range, the NCS-L-12/18 is particularly suitable for low-water, viscous media such as oils, syrups or even cosmetic creams. Due to its inline integration in the outlet pipe of the filling system, the sensor signals safely and reliably as soon as the cream is depleted, thus stopping the filling process automatically.

  1. The result
  • Cream losses are minimized.
  • The quantities of waste to be disposed of (cream remaining in the tank) is reduced.
  • Impurities (splashes due to dry running of the filling pump) are avoided.
  • Maximum process reliability for the personnel operating the filling system
  1. Sensors used in the application

NCS-L-12/18                   NCS-01, NCS-M, NCS-L-31P

       4.1 Point level NCS-L-12/18

 Advantages:

  • Limit level detection even with media with low water content such as syrup, fruit concentrates, alcohols and oils with εr (Dk) ≥ 2
  • Reliable indication even with strongly adhesive media due to capacitive measuring principle
  • Very short response time

4.2 NCS-01, NCS-M, NCS-L-31P

Advantages:

  • Insensitive to foam and adhesions
  • Different sensor lengths for adaptation to all installation situations in pipes and vessels

 

 

 

 

ANDERSON-NEGELE’S NEW P41 PRESSURE SENSOR

Morton Controls introduces Anderson-Negele’s new P41 pressure sensor with temperature compensation providing a quality, robust and cost-effective pressure and level measurement solution.

Pressure sensors for levAnderson-Negele P41 Pressure Sensor el measurement

Anderson-Negele’s new P41 pressure sensor compliments the range of pressure sensors from Anderson-Negele being the D3, L3, LAR, DAN-HH, PFS and P41. With our comprehensive range of sensors based on various measuring methods, you can be assured of a measuring instrument, for process pressure and level measurement, that is precisely tailored to your application.

Robust, needs-based, cost-effective

Despite its compact appearance, Anderson-Negele’s new P41 pressure sensor is designed to meet the high demand of process requirements: Pressure up to 40 bar, overpressure resistant up to 100 bar, vacuum resistant. The measuring range can be individually adapted to the desired process pressures and a choice can be made between absolute and relative measuring cells. Compound measurement is also possible, that means that the relative measuring cell can also be used to measure the vacuum range.

The P41 is robust when it comes to temperatures: up to 125 °C as standard, up to 150 °C / 60 min for CIP/SIP cleaning, and even up to 250 °C permanently with optional cooling section. The entire sensor, including the diaphragm, is made of stainless steel for excellent cleanability and durability. The P41 is versatile in terms of process connections and offers, in addition to the hygienic thread “G1” with CLEANadapt, further connections according to DIN 3852 in “G1/2” and “G1”, as well as Tri-Clamp and Varivent.

The complete rugged process sensor system from a single source

Morton Controls in conjunction with Anderson-Negele offer an extensive range of sensors to make all fluid processing application efficient and reliable.  With temperature, pressure, filling level, limit level, flow measurement and monitoring along with conductivity and turbidity. Measuring methods are adapted to the special requirements for the demands of process industry, due to their innovative products that are specifically designed for sanitary and hygienic sensitive areas. Solutions based and customer-oriented approach, Anderson-Negele has become synonymous with quality and efficiency in the food, beverage and life sciences industries.

We are pleased to bring Anderson-Negele’s new P41 pressure sensor to our clients.

Contact us today if you would like to find out more.

 

PETROCHEMISTRY: CHLORINE-ALKALI ELECTROLYSIS

PETROCHEMISTRY 

 CHLORINE-ALKALI ELECTROLYSIS

The chlorine-alkali electrolysis is an important procedure in the chemical industry. The products chlorine, hydrogen, hydrochloric acid and caustic soda are generated from sodium chloride. There are three manufacturing methods: the diaphragm, the membrane and the amalgam process.

The LiquiSonic® analyzer provides an advantageous utilization in the varied process steps of the three methods. Foremost, the customer gains the advantages of a reduction in raw material and energy consumption, as well as an increase in the yield.

 

LiquiSonic® measuring points in the processes of the diaphragm method of the chlorine-alkali electrolysis

 

Preparation of end products

1.1  Caustic soda concentration

The market ready caustic soda (NaOH) typically has a concentration between 45 wt% and 50 wt%. Since NaOH gained from electrolyzer cells only yields a concentration range between 12 wt% and 33 wt%, it is concentrated in cascade evaporators.

If together with NaOH the solution contains NaCl (diaphragm method), the excess salt in the caustic soda precipitates in a crystal form during the evaporation. This way, the NaOH-concentration is elevated to 45 wt% and 50 wt%.

The LiquiSonic® analyzer continuously determines the concentration of caustic soda at any time after evaporation. A subsequent dilution of the caustic soda to a customer specific product concentration, can also be monitored.

ADVANTAGES:

  • Continuous concentration monitoring of the caustic soda
  • Reduction in the energy costs during the evaporation process

1.2 Chlorine gas drying

Water content needs to be removed from the chlorine gas before it is further processed as its corrosives elevate at a moisture content of over 30 ppm. For the drying, the chlorine gas is routed into the absorption towers, where the water content in the chlorine gas is absorbed with highly concentrated sulfuric acid (80 – 99 wt% H2SO4).

The effectiveness of this drying process significantly influences the productivity and quality of the gas. Therefore, a reliable measurement of the H2SO4 concentration is vital. The LiquiSonic® analyzer offers a continuous and safe monitoring of the H2SO4-concentration, in opposition to conductivity and density measurement.

ADVANTAGES:

  • Elimination of labour intensive sampling
  • Continuous monitoring of H2SO4-concentration
  • Clear concentration determination signal between 80 wt% and 100 wt% H2SO4
  • Ensuring the desired Cl2 dryness to avoid corrosion in the system

1.3  Hydrochloric acid production

The chlorine gas that is generated on the anode of the electrolyzer with the added hydrogen form the base materials for the synthesis of hydrochloric acid. Both gases are fed into a burner and react to form hydrogen chloride. Subsequently, the formed HCI-gas streams from the burning chamber into the integrated isothermic falling-film-absorber. Here, the gas is absorbed with the help of water or diluted acid, whereby concentrated hydrochloric acid (37 wt% HCI) is formed.

Using the LiquiSonic® analyzer, a continuous monitoring of the hydrochloric acid concentration is possible. This allows for deviations to be recognized from the target concentration and to react accordingly.

ADVANTAGES:

  • Continuous concentration monitoring of hydrochloric acid (20-40 wt% HCl)
  • Ensuring an extremely precise target concentration

Advantage of sonic velocity as compared to conductivity and density

 

 

suspended solid sensors

SUSPENDED SOLID SENSORS – GET BETTER CONTROL

For better control over your suspended solids, we recommend Quadbeam’s S-range of suspended solid sensors, both for hygienic and immersion capabilities.

In addition, you will realise cost savings, a reduction in losses, and higher concentration control, in a repeated and accurate manner.

 

THE MAIN FEATURES OF THE S-RANGE SUSPENDED SOLID SENSORS

  1. Because of the 4-beam self-compensating sensor, drifting is eliminated and therefore electronics aging and contamination is done away with
  2. You have one-piece piece casing and therefore no leakage in the lenses – completely glass-free
  3. These sensors are reliable, repeatable and accurate

Quadbeam offers a number of models in their suspended solid sensors, namely:

Under Hygienic –

– S10-3HY

– S10HT-3HY

– S10-2HY

– S20-3HY

– S40-3HY

And, under Immersion:

– S10-IMM

– S20 -IMM

– S40-IMM

And, under Variline:

– S20-VN

– S40-VN

 

The measurement range of the S-range sensors are impressive:

– 0 – 25g/L in normal activated sludge (immersion)

– 0 – 40% milk fat (hygienic)

All dependent on the media and particle size

 

THE VARIOUS APPLICATIONS:

Quadbeam’s S range covers a wide area of applications, namely, mining, waste water, pulp and paper, dairy, and food and beverage.

For industrial applications, they are able to deal with the activated sludge measurement for return and waste. In the food, beverage and dairy arena, the monitoring of high levels of suspended solids is a popular application.

 

For hygienic applications:

– the product to water interface

– monitoring on fruit pulp

– concentration control of solids

– concentration of milk fat

 

For immersion applications:

digested and thickened sludge to clarifiers

– measurements of waste and return sludge

– filter, gravity and centrifugal

 

Should you be wanting to explore these range of sensors, we urge you to make contact with us and we will arrange a demo at your convenience.

sensors

Precise Measurement with Sensotech’s Liquisonic Sensors

For a more precise and quicker measurement of concentration and density, look no further than the Sensotech Liquisonic Sensors.

 

In particular Sensotech have had much success in the many sectors from chemical to the  brewing industry. While they use a standard system, there is also fine-tuning to customise the solution to the specific food industry specifications and hygienic requirements.

 

INSTALL AND FORGET

It is rare in an industry, where keeping tabs is the norm, to find a company that promotes walking away and letting the system manage the process alone. And that really is the case here! Sensotech’s Liquisonic sensors are that in tune, that once they have been set up correctly, they will monitor continuously.

 

Multiple signals are sent out every second and combined into one compensated signal. The temperature of the medium and the drifts are taken into account during single measurements. No matter what is happening with the conductivity and colour of the medium, the measurements continue. They are also resistant to pressure shocks.

 

The Liquisonic sensors are manufactured to be maintenance and drift-free for a period of 15-20 years. If you were concerned about drift in measurement before, no need to with SenorTech.

 

WHAT IS THE UNIQUE CONCEPT BEHIND THESE SENSORS?

sensors

The fast reaction time of these sensors using absolute sonic velocity as a well-defined and retraceable physical value means phase separation is quicker than before, with more accuracy. You are getting a reproducible physical signal that is quite unique handling temperature rangers of  up to 180 °C or 200 °C and can be use in explosion areas as well.  Solid rugged sensors for a precise and fast density and concentration measurement using absolute sonic velocity as a well-defined and retraceable physical value.

The positioning of the Liquisonic sensors is key in the application, be it in the main vessel or piping. The sensors are available to suit your process connections, such as tri-clamps, varivents or flanged.

The electronics can be housed inside a enclosures form polyester to stainless steel casing (IP 69) or in an existing cabinet.

 

THE STORAGE OF DATA

 

The Sensotech  controller can have up to four sensors connected for management of up to 32 (optional 99) products with an output of concentration and temperature, trend chart for a fast process course overview with  simple parameterization, e.g. of periphery analog and digital outputs, fieldbus, and Ethernet. It has a automatic self-monitoring function with a simple installation und intuitive operation for recording of events, e.g. exceeding of thresholds or change of product plus long-term memory of measuring results and user management with authorization levels. Remote operation via browser (PC, tablet, etc.)standard is to provide data storage that is situated internally as well as a card slot this way you can store the measurements for longer periods of time.

 

LET’S TALK APPLICATIONS

 

There are many variations and applications where the Liquisonic sensors can be applied. Namely:

 

Phase Interface Detection

Gas Scrubber Control

Concentration & Density Measurement

Refrigeration Cycle Monitoring

Evaporator

Neutralization

Incoming Goods Control

Bath Monitoring

Polymerization Monitoring

Solids control in pulp and paper (green, red and black liquor)

 

D3_1-Remote-Flush-Mount-Short_F-Trans

D3 Differential Pressure & Level Transmittor

Focusing on the Food, Beverage, Dairy and Life Sciences industry, we bring you Anderson-Negele’s D3 Differential Pressure and Level Transmittor.

Using the Modular Platform of Anderson-Negele sensors and the technology of L3 it has a parallel display of differential pressure and head or system pressure in the display and two mA output interfaces. The electronics using digital signalling to avoid negative impact of temperature changes reduces the effects of process and ambient temperature changes quite significantly. One of the elements we like about the D3 is that it comes ready to use out-of-the-box and the simple setup and programming is just that – simple.  You can mount the D3 transmittor display direct or you can mount the two sensors remotely and insuring a reliable remote wire cabling.

Take a look at some of the applications where this transmittor has worked well.

THE RANGE OF APPLICATIONS FOR THE D3 DIFFERENTIAL PRESSURE AND LEVEL TRANSMITTOR

 

  • In yoghurt culture vessels for Level monitoring
  • In fermentation vessels for Level monitoring
  • In Mashtuns for grain bed monitoring
  • Across membranes for pressure drop measurement

WHAT ARE THE MAIN FEATURES?

 

As mentioned, the setup couldn’t be easier with the user interface display.  You are provided with two analogue outputs, the top or bottom pressure and the differential pressure output.  In addition, the temperature compensation which will minimise any errors in extreme temperature changing applications plus simple and reliable remote wire cable avoid frequent recalibration

 

Should there be a need to replace or repair components, this can be done in the field with ease and no interruption to the work process as there are no capillary issues!  On inputting the product and tank information, you will receive accurate mass and volume output due to the integrated tank tables.  The patented dual o-ring seals give you IP69K ingress protection and you can look forward to the dual loop output provided by the Hart 7.0 graphical and communication LCD display.

 

WHAT IS THE MEASURING PRINCIPAL OF THE D3 DIFFERENTIAL PRESSURE AND LEVEL TRANSMITTOR

 

In the D3 system, each sensor uses an internal piezo-electric signal converter and a temperature sensor to measure the pressure and temperature of the capillary fill.  The electrical signal of the pressure converter and the resistance of the temperature sensor are measured and converted to a compensated pressure value in the pressure fitting. Both signals are transferred digitally to the head. They are then output in a standardized 4…20 mA and HART 7.0 signal for the differential pressure and in a 4…20 mA signal for the top or total pressure.

 

Where you have level applications that have pressure and/or vacuum conditions, we highly recommend the D3 Differential Pressure and Level Transmittor from Anderson-Negele.

UWT T30

THE T30 PROCESS TURBIDITY SENSORS FROM QUADBEAM

Quadbeam Technologies has two models available, the Immersion T30-IMM and the Hygienic T30-3HY.

 

Utilising Quadbeam’s four beam ratio-metric technology, with the 90 degrees Scattered and the Attenuated NIR, meeting ISO7027 standards, making it a truly unique turbidity sensor proving its reliability, repeatable ability and accurate measurement in many situations.

 

The measurement range is between 0 and 50 through to 0 to 1000NTU.  Note that these measuring ranges will change dependent on the media and particle size. The simple user interface is easy to calibrate, and you will find you will have much better control over many processes.

 

Both Immersion and Sanitary configurations are available with Hygienic 3A certified and Immersion Styles Airjet Cleaner of Immersion Style approved.

 

SOME COMMON APPLICATIONS WITH THIS TURBIDITY METER

 

  • Clarifier overflow weir monitoring
  • Steam condensate and cooling water returns
  • Surface water monitoring
  • Solids that are loaded in streams and rivers
  • Condensation water monitoring
  • Filtration control and monitoring
  • Measuring percentage solids in vegetables and fruit
  • On plate heat exchangers – product breakthrough control
  • From DAF plants, final outlet of effluent measurement
  • Dairy plant loss control

 

 

MORE ON THE T30

 

There are two emitters and two detectors, which are set at 90 degrees to each other.  As they pulse in sequence, two detector currents are produced, one from the detector at 90 degrees to the emitter (scattered light) and one from the detector opposite the emitter (attenuation). A Ratio-metric four beam signal processing compensates for changes in optical properties of emitters and detectors due to ageing and surface coating.

 

A standard built-in cleaner is available with the T30 submersible turbidity sensor from Quadbeam.  The recommended cleaning method is with high pressure air with an optional biocide included. To protect the sensor fingers from impact, stainless steel support rods are designed to lift and protect the sensor fingers in rugged applications.

 

For more info on the T30 Turbidity Sensor from Quadbeam, reach out to Morton Controls today.