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KROHNE, INC.

Table of Contents
•	Manufacturers of Variable Area Flowmeters, Electromagnetic Flowmeters and Ultrasonic Flowmeters
•	Electromagnetic Flowmeter, Vortex Flowmeters and Level Measuring Instruments
•	Temperature Sensors and Pressure Sensors

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Electromagnetic Flowmeters, Variable Area Flowmeters, Dual Beam Ultrasonic Flowmeter, Coriolis Mass Flowmeter, Massflow Meter, Vortex Flowmeters, Level Gauges, Level Switches, Temperature Sensors, Pressure Sensors

Manufacturers of Variable Area Flowmeters, Electromagnetic Flowmeters and Ultrasonic Flowmeters

The Start
In 1921 LUDWIG KROHNE began to produce variable area flowmeters. The company moved from rented facilities to company-owned buildings in 1936. These were destroyed during the 2nd World War.

Starting again
In 1949 Ludwig KROHNE’s grandson, Kristian Dubbick joined the company. Under his leadership KROHNE – with an initial workforce of only 8 people - grew to become a leading and one of the most innovative companies for flow measuring devices.

The Generation Change
At the end of the 1970’s Kristian Dubbick relinquished his position of Managing Director and became Chairman of the Board of Directors. Today the company is managed by Michael Dubbick (Controlling and Human Ressources) and Stephan Neuburger (Sales and Marketing).

80 years KROHNE - 80 years milestones in measuring technology

1921 LUDWIG KROHNE & SOHN founded.
Production of variable area flowmeters
1952 First electromagnetic flowmeter for industrial applications
(TOBI 1952 / KROHNE Altometer 1962)
1972 Pulsed DC field excitation with automatic zero correction for electromagnetic flowmeters
1978 Development of ultrasonic flowmeters
1980 First dual beam ultrasonic flowmeter
1981 World’s first ceramics measuring tube for electromagnetic flowmeters
1985 Production of the Coriolis mass flowmeter
1990 First microwave radar (FMCW) level gauge for process tanks
1994 First straight-tube Coriolis mass flowmeter
1996 First electromagnetic flowmeter for partially filled pipes with integrated capacitance level gauge
2000 Commissioning of an eleventh calibration rig, the largest and most accurate in the world, at KROHNE Altometer, 43 metres high calibration tower, measuring accuracy < 0.013% of measured value
2001 First electromagnetic 2-wire flowmeter with full process application compatibility, intelligent power optimization, extreme signal to noise ratio
2002 3rd Generation massflow meter with straight tube, OPTIMASS.
2003 First 3-beam ultrasonic flowmeter for the chemical industry, UFM

The Level and Flow Company
KROHNE is the Level and Flow Company. We offer a complete range of flow and level products.

In our modern production plants around the world, we produce measuring instruments of the highest precision, operating reliability and dependability. By developing future-oriented production techniques, we consistently put technological progress into everyday practice.

FLOW PRODUCTS

Volumetric Flow Products

Variable Area Flowmeters
Electromagnetic Flowmeters
Ultrasonic Flowmeters
Vortex Flowmeters
Flow Controllers

Mass Flow Products

Straight-tube Coriolis Flowmeters (3rd Generation)
Low Flow Coriolis Flowmeters

LEVEL PRODUCTS
Our second strength is in level detection and measurement. Here we offer:

Continuous Flow Measurement

Level radar, non-contact
TDR, contact guided microwave

Mechanical level gauges

Flap indicators
Floats

Flow switches and gauges

vibration

Supplementary products

To supplement these mainstay products we also offer a range of temperature and pressure gauges and conductivity meters, particularly for hygienic applications.

Electromagnetic Flowmeter, Vortex Flowmeters and Level Measuring Instruments

Electromagnetic Flowmeter

Electromagnetic flowmeters can be used in almost all branches of industry for the measurement of liquids (with or without solids content) pulps, pastes and other fluids that have a specific minimum of electric conductivity.

Superior electronics give you superior results - reliable and repeatable even under difficult process conditions, while quality manufacturing guarantee years of trouble-free use.

At KROHNE, all electromagnetic flowmeters are wet-calibrated by direct comparison of volumes, the most accurate calibration method of all. The KROHNE calibration rig is the world's largest and most accurate.

Compared with other measurement methods, electromagnetic flowmetering offers the following particular advantages:

Measurement independent of pressure, density, temperature and viscosity
Short inlet and outlet runs
Free pipe cross section
No additional pressure losses
No moving parts
Any desired installation location
Measurement span 100:1
High accuracy - up to ± 0.2 % of actual value

The liner and the electrodes of the flow sensors are available in various materials that will match almost any application.

Ultrasonic Flowmeters

Ultrasonic flowmeters (UFM's) find universal use for non-contact measurement of all fluids and gasses in which ultrasonic waves can propagate. The principle of measurement is based on ultrasonic transit time.

All our ultrasonic flowmeters are calibrated on the world's largest and most accurate calibration rig.

The Highlights of KROHNE's Ultrasonic Flowmeters:

High measuring accuracy independent of viscosity, temperature and conductivity
No pressure loss through the smooth metering tube and no obstructions to flow
Exact calibration by direct volume comparison
Intrinsically safe version to European Standard for Zone 0
Low operating cost thanks to low power consumption and zero maintenance

Variable Area Flowmeters

Variable area flowmeters from KROHNE offer not only the maximum possible accuracy but also maximum reliability. A wealth of experience and an intelligent quality assurance system enables us to place our VA meters in applications inaccessible to other manufacturers such as nuclear power stations where safety is critical

Technical features
Flowmeters operating on the float principle are suitable for both liquids and gases. This method is inexpensive yet highly accurate and reliable.

Benefits of variable area flowmeters

Accurate measurement even at very low flow rates
Standard rangeability of 10 : 1 (ratio of full-scale to lower limit value)
Suitable for low operating pressures
Minimal pressure losses
Local indication without the need for auxiliary power
Can be used even with short or no straight inlet/outlet runs
Essential components easily replaced
Exact calculations to VDI codes.

Vortex Flowmeters

Vortex flowmeters operate on the Karman vortex street principle to measure the volumetric flowrate of gases, fluids and vapours.

for temperatures from -20...+430°C (-4...806°F) and pressure up to 100 bar (1450 psig)
high measuring accuracy (< 0.5% for liquids and <1.0% for gasses) and high reproducibility; stable measurement at Re > 5000
non-contact measurement, no mechanically moving sensor parts, maintenance-free
suitable for vertical or horizontal installation
compact and remote electronics (up to 15 m / 50 ft) versions available
flange version DN 15 - DN 300
sandwich version DN 15 - DN 200 in stainless steel or Hastelloy C, low sensitivity to pipework noise and conditions
communication via HART®-Protocol

Applications

for flow velocities up to 7.7 m/s (25.3 ft/s) for liquids or 80 m/s (260 ft/s) for gases and steam
hot steam measurement, also for CIP and SIP applications in the food industry
specially developed for measurement of low flow rates
measurement of liquid operating media with low conductivity
measurement of additions in wastewater treatment

Level Measuring Instruments: Level Gauges and Level Switches

KROHNE offers a comprehensive and versatile range of level gauges and level switches for measurement of fluid levels.

KROHNE level products are found in all industries, in all storage tanks and silos, in Ex areas, onshore and offshore as well as on tanker ships, road and rail transporters.

Implementation of various measuring principles, advanced technology and rigid quality control have produced measuring instruments which guarantee high accuracy even under extreme operating conditions. Their applications extend from liquid sulphur at 140° C (284° F) to the storage of liquified gases; from tanks on ocean-going ships to storage tanks in nuclear power stations.

Even at an operating pressure of 400 bar (5800 psig), you can still count on us. However, the easier problems are just as welcome. In all cases, our measuring instruments combine high accuracy, reliability, and economy.

Ex-Certificates of conformity
Approvals as part of an overfill protection system
Approval in conformity with the Druckbehälterverordnung (German pressure vessel code) and various other international approvals

Our devices can be fitted with a choice of user-specific process connections. Various interfaces such as RS 485, Modbus, PROFIBUS-PA, HART® and DTM / FDT 1.2 Systems are available for intelligent data communication.

Temperature Sensors and Pressure Sensors

TEMPERATURE SENSORS AND PRESSURE SENSORS

TTP 200
The screw-in TTP 200 temperature sensor with stainless steel connection head is designed for use in processes demanding high standards of hygiene (e.g. breweries, dairies, beverage and pharmaceutical industries).

made entirely of stainless steel
short response times
various sensor diameters

TTP 300
The compact screw-in TTP 300 temperature sensor with M12 plug connector is designed for use in processes demanding high standards of hygiene (e.g. pharmaceutical and food industries, biochemical processes).

made entirely of stainless steel
short response times
various sensor diameters
installation in pipes sized DN 15 and higher

TTP 400
The temperature sensor TTP 400 with adjustable insertion depth and stainless steel connecting head is used in processes with high hygienic demands (e.g. breweries, dairies, drinking and pharmaceutical industry).

food compatible sealing system with PEEK cone
short response time
defined position of the cable gland
different sensor tips: Ø 6 mm; Ø 4 mm; Ø 3 mm / Ø 0.2’’; Ø 0.16’’; Ø 0.1’’
insertion depth is variable

TTP 500
The TTP 500 surface temperature sensor with stainless steel connection head is used in processes, where no contact with product is desired. The dedicated adapter sleeve allows the installation on the tank surface or a flush front installation on the tank wall. The service during the ongoing process is possible.

not in contact with product
flush front installation
service possible during process
sensor complete stainless steel
short response time
defined position of the cable gland

Pressure sensor

PTD 500-Pressure sensor with front-flush diaphragm

Oil-free, front-flush diaphragm
Vacuum-resistant and overload-protected
2-wire connection

The PTD 500 pressure sensor with flush-front stainless steel diaphragm is designed for use in processes demanding high standards of hygiene (e.g. breweries, dairies, food and pharmaceutical industries). Typical applications are tank level measurement based on the hydrostatic principle and relative pressure measurement.

Conductivity sensor ACM 500

The conductivity sensor ACM 500 with stainless steel connecting head is a compact system designed for measurement of inductive conductivity. Its small and compact design allows installation in pipelines sized DN 40 or 1.5" and higher.
Features

excellent accuracy, even at low flow rates
ideal for chemical processes, e.g. in the production of fertilizers and plastics
batching processes
digital signal processing
solids and entrained gas have limited effect on measurement results
no periodical recalibration

Batching Controller

The Batching Master is a control instrument, especially designed for the automation of a batch function, where a precise result is required. The Batching Master as a "stand alone version" is a fully functional device that requires just one power supply. The operator has all the information that needed for a safe batching process local to the plant. The batch is started directly at the point filling. If there is a failure in the system, the batch can be stopped immediately. Error messages are displayed in clear text.

Complete Batching Systems

IBS BatchControl offers complete batch systems, consisting of flow meters, Batching Master, valves, Exi-interfaces, Exe-housings, printers and loading software. Based on the cooperation with the main manufacturers in the process measurement and control industry, IBS BatchControl GmbH is able to provide systems customised to your requirements.

Exi Controller - Exi-Controller CTR200i

The CTR 200i is an intrinsically safe single loop controller that can be installed directly in hazardous areas.

DMT 02 ATEX E 148
For applications in hazardous areas
Direct connection of sensors and actuators
Three analogue inputs 4 - 20 mA, optional Pt 100
Two analogue outputs 4 - 20 mA

Exi-Bargraph indicator BGI 200i

DMT 02 ATEX E 148
For applications in hazardous areas
Three bargraph indications and one switchable digital indication
Three analogue inputs 4 - 20 mA or Pt 100
Two analogue outputs 4 - 20 mA
Six digital inputs and outputs

Communications
These days sensor and actuator systems placed in the panel for the automation of technical processes are often still connected to control and master data surfaces via the 0/4...20mA interface. The advantage of this interface lies in the easy to handle technology as well as the broad distribution.

Flexibility
Even communication systems not mentioned above, such as MODBUS, are supported by selected devices.

In a production plant, tankers and wagons have to be filled at different loading stations.
The filling process on the plant field side is controlled by a field side batch controller called "Batching Master".

The loading-PC is installed in the control room. The loading software visualizes and controls the loading process. In the administration part of the software, orders and loading orders can be generated very easy with different data base functions.

Functionality of the loading software: