Krohne Flowmeters | Mass Flow Measurement Of Oil Products When Loading & Offloading Tank Lorries & Ships

Published 12 Jun 2020

Process Measurement Instruments – Flow, Temperature, Level & Pressure Measurement

KROHNE Flow Meters

Process Instrumentation for Industrial, Hazardous Area & Explosive Atmopheres

Ultrasonic Flow Measurement

KROHNE flowmeters and measurement instruments provide accurate and reliable measurement of industrial liquids, gases and other media (including emulsions, corrosive liquids and gases) with a range of low/high flow rates.

KROHNE is a world-leading manufacturer and supplier of solutions in industrial and explosive atmosphere process instrumentation – with over 30 worldwide approvals for hazardous area gas and dust Zones including ATEX, IECEx, usFMc, NEPSI, INMETRO, KGS, GOST-R and PESO/CCOE. The range of flowmeters manufactured by KROHNE incorporates multiple explosion proof and protection concepts – including IS (Intrinsically Safe) and Ex d (Flameproof) for flow measurement and metering in the hazardous area industries.

Flowmeters by KROHNE | the world-leading manufacturer and supplier of solutions in industrial and hazardous area process instrumentation: flow meters, level meters, temperature meters and pressure measurement.

Background

SC Klaipedos Nafta is one of the largest oil ports on the Baltic coast in Lithuania. Crude oil and oil products are delivered by ships and freight trains and then loaded for further transport onto tank lorries and ships. Tank ships with a shipping volume of up to 100000 t can dock and the port capacity is 500 rail cars.

The storage volume is approx. 400000 m³. A new filling system suitable for custody transfer was necessary in order to increase the capacity for light oil products when loading tank lorries from tank cars.

Flow Measurement requirements

The new loading system for tank lorries had to be suitable for custody transfer and able to generate all financial data. Additional requirements included: simple installation, superior accuracy and smooth integration of the new system into the existing SCADA and filling control and control system. Measurements must be based on the European MID in accordance with MI-005 and API 5.5 Level A.

Product benzene E 95 ( = 95 % ethanol + 5 % benzene ):

Density: 741…791 kg/m³
Flow rate: 20…100 m³/h
Viscosity: 0,45…1,5 mPa•s
Operating pressure: 4 bar
Operating temperature: -29…+35 °C/84.2…95 °F

KROHNE Solution

For this application KROHNE supplied 5 OPTIMASS 7300 C mass flowmeters and 2 SUMMIT 8800 digital flow computers. It is very easy to install the OPTIMASS measuring devices in the pipelines as there are no installation requirements.

Pipeline vibrations have no impact on the highly accurate measurements. The compact designs of the measuring devices make the electrical connection easier. The devices come equipped with density and temperature measurement as standard.

The devices can be started up and operated without any special knowledge. The SUMMIT 8800 is a digital flow computer featuring a large, easy-to-read colour display with multi-colour light control and touchscreen operation. The completely redundant Ethernet is suitable for WLAN when using all common protocols. The SUMMIT 8800 can be used for many different types of measurement.

KROHNE Flowmeters

Customer benefits

OPTIMASS mass flowmeters from KROHNE offer many advantages such as excellent long-term stability and repeatability, guaranteeing precise measuring results. The devices work extremely reliably. Because OPTIMASS 7300 C measuring devices can measure the mass flow directly, recalibration becomes unnecessary, even with varying process parameters. There is virtually no additional pressure loss due to the single straight measuring tube design of the mass flowmeters. This means that the required pump output is minimal.

Equipping a loading system for tank lorries with Coriolis mass flowmeters
Simple integration into existing SCADA, filling control and control system
Custody transfer measurement in accordance with MID MI-005 and API 5.5 Level A

KROHNE Flowmeters Used

OPTISONIC 7300 flowMeter

Hazardous Area Process Instrumentation, Meters & Measurement – KROHNE OPTISONIC 7300

The OPTISONIC 7300 is a universal 2-path ultrasonic gas flowmeter for process and utility gas measurements in oil and gas refineries or the chemical or petrochemical industries.

It is also suitable for non-custody transfer natural gas applications or applications with (compressed) air, mixed or flue gases (up to +180°C / +356°F). Using the transit time differential measuring principle, the OPTISONIC 7300 delivers high performance over a wide flow range (up to DN600 / 24″, turndown ratio: 100:1).

The flowmeters patented titanium transducers are perfectly focused, equalizing process fluctuations and avoiding acoustic feedback.

Bi-directional flow measurement over a wide dynamic range (turndown ratio: 100:1)
Integrated volume correction to standard conditions (using pressure and temperature measurement)
With current inputs for external pressure and temperature sensors
NACE-approved grade 29 titanium transducers for maximum corrosion resistance
Largely independent of gas density and composition
Full bore design: No moving parts, no wear, no pressure loss
Compact or field-mounted version

Hazardous Area Process Instrumentation, Meters & Measurement – KROHNE SUMMIT 800

SUMMIT 880 Meter

The SUMMIT 8800 is a digital flow computer for custody transfer (CT) measurement. Its state of the art full colour graphical touch screen allows a graphical representation of the measurement process, with all measured values shown in real time; Up to 5 different types of meters combined in one flow computer, with CT measurements still being processed within 0.25s.

The SUMMIT 8800 communicates via digital, analogue, serial and Ethernet interfaces to obtain the measurement and diagnostics from the field converters and analysers. All calculated values (densities, flow rates, totals, etc.) are available in Modbus format which can be read by any PLC, SCADA, accounting system etc.

Compliant with all main international standards, such as OIML, ISO, API, AGA, GOST
Fully digital; no loss on accuracy due to analogue to digital conversions
Enhanced diagnostics with logging of preselected measured parameters
Modbus mapping & system compatibility (DCSs, PLCs, Supervisory, SCADA, HMI)
Advanced system integration incl. eReporting push, web interfacing and remote monitoring
Very short cycle time: down to 0.25 sec
Redundant operation in duty-standby configuration
Up to 8 non-CT multi product liquid applications per flow computer

Hazardous Area Electrical Distributors

Explosive Atmosphere Experts

Thorne & Derrick are Specialist Distributors of Hazardous Area Electrical, HVAC & Process Instrumentation Equipment with IECEx & ATEX Certifications to the onshore and offshore oil, gas, petrochemicals and process industries.

We supply major UK and international infrastructure projects and also MRO (Maintenance, Repair, Operations) requirements for both planned and unplanned plant shutdowns – we react with a rapid response to customer demand to ensure downtime is minimised and reliable Power, Light & Heat is restored or provided.

We distribute Innovative products to manage the planned replacement of legacy equipment conformant with international classifications including ATEX and IECEx.

ATEX Process Instrumentation