Krohne Flowmeters | Nominal Volume Flow Measurements In Offshore Operations On Production Platforms

Published 15 Jun 2020

KROHNE

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.

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

On production platforms, there are often different types of gases to be measured, in order to get exact definitions about production quantities and mixtures. The gases to be measured are Fuel gas and CH Mix gas. These measurements are done mainly in areas at risk from explosion.

Flow Measurement requirements

The deployed measuring devices must be able to measure gases with the following process parameters.

Process parameters

  • Media: Fuel gas and CH Mix gas
  • Nominal Volume flow: up to 25000 Nm3/h (subject to change)
  • Pressure: up to 5.2 Bar (subject to change)
  • Process density: Up to 6.9 kg/m3 (subject to change, the nominal density is constant)
  • Viscosity: 0,018 mPa•s
  • Product temperature: up to 93 °C

The composition of the gases remains constant while pressure and temperature can change. All devices must be protected against sea water through the use of a special paint. The devices must be manufactured in compliance with NACE and are supplied with a material quality certificate as well as pressure and hardener tests.

KROHNE Solution

For these applications, KROHNE delivers six OPTISWIRL 4070 C vortex gas flowmeters in an ex-protected version Ex-d ia (intrinsically safe). All devices have flange connections.

The installation sizes for Fuel gas are 2 × ½” and 2 × 1″, each in 300 lb and for CH Mix, in 6″ and 8″ also in 300 lb. The devices are equipped with pressure and temperature compensation.

Krohne Flowmeters

Krohne Flowmeters

Customer benefits

As the customer has already deployed several measurement systems from KROHNE, the company was given the job of handling these measurement tasks. Because of the OPTISWIRL 4070 C wide measurement area range, the exact gas quantities can be recorded much more accurately.

The flow volumes are shown directly on-site in the required units, thanks to the integrated pressure and temperature compensation. The measuring devices are maintenance-free. Apart from the low investment costs, the simple installation of the compact 2-wire measuring device was a decisive factor for the operating company.

  • Volume flow, temperature and pressure measurements with a measuring device
  • Simple installation with 2-wire connection technology
  • Problem-free replacement for previously deployed measuring devices

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.

Key Product Categories: Control Panels | Plugs & Sockets | Isolators | Enclosures & Junction Boxes | Lighting | Control Stations | Motor Starters | Heat Trace Cables & Systems | Gas Detection & Detectors | Fire Detection & Detectors | Heat Detectors | Electrical Heating & Heaters 

➡ Also Process Instrumentation Products: Ashcroft Pressure Gauges | ASCO Valves | Katronic Flow Meters | KROHNE Flow Meters | VEGA Level Sensors | Rotronic Temperature & Humidity Sensors

ATEX Process Instrumentation

Further Reading