Flow Measurement & Control


Differential pressure flowmeter

October 2012 Flow Measurement & Control

The Durag D-FL 100 flow monitor continuously determines flow velocity and flow rate in exhaust gas. The flow is calculated from the differential pressure in a flow probe with two measuring chambers. The flow in the duct builds up a pressure difference between the two separate chambers of the probe and this pressure differential is proportional to the square of the gas speed. To calculate a normalised flow, input for differential pressure, absolute pressure and temperature is used. The flow monitor measures across the cross-section of the duct.

Alarm levels are pre-selectable and any alarms are indicated inertia free, permitting the necessary interventions on the plant control system so as to comply with prescribed emission limit values. The D-FL-100 units are available in two types: the D-FL-100-I is designed for measuring flow without temperature and pressure compensation while the D-FL-100-II measures flow with temperature and pressure compensation.

The flow volume can be converted from operational to standard conditions by the D-FL-100-10 microprocessor evaluation unit, which has been provided with two additional 0–20 mA current inputs for a temperature probe and a pressure probe. If an emission evaluation computer is available, the evaluation unit is not required. Special designs are available for use in aggressive exhaust gases. A hastelloy flow probe is recommended for power, chemical and paper plants. For operating temperatures over 600°C, an inconel flow probe is available.

The measuring ranges offered are 400–2000 mm, 2000–4000 mm and >4000 mm. Exhaust gas temperature can be up to 320°C above the exhaust gas dew point. An automatic backflow purging feature is available as an option.

For more information contact Mike Andrews, OEN Enterprises, 27 (0)11 675 4447, mike@oenenterprises.co.za, www.oenenterprises.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Safe operation of CNG stations
October 2020, SICK Automation Southern Africa , Flow Measurement & Control
The Flowsic500 compact ultrasonic gas meter enables extremely accurate natural gas distribution measurement.

Read more...
Ultrasonic flowmeter for wide ranges
September 2020, Instrotech , Flow Measurement & Control
Bi-directionally transmitted ultrasonic waves provide precise results of volume flow as the result of their transit time difference. Installed in any position, the units can measure ranges of 1:250.

Read more...
Turck standardises its fluid portfolio
September 2020, Turck Banner , Flow Measurement & Control
Turck’s new portfolio of fluid sensors offers a wide range of variants and combinations, while having common key features at the same time. The compact FS+ flow sensor with IO-Link now follows the launch of the PS+ pressure sensor.

Read more...
Safe operation of CNG stations
August 2020, SICK Automation Southern Africa , Flow Measurement & Control
SICK’s Flowsic500 gas meter, used in State Oil Company of Azerbaijan Republic’s (SOCAR) transfer and measurement stations, has shown to meet stringent compressed natural gas (CNG) production protocols. ...

Read more...
Flexim perfects the steam flowmeter
June 2020, Actum Group , Flow Measurement & Control
Flexim is proud to announce the manufacture of a robust, user-friendly and industry-certified ultrasonic steam flowmeter solution. For this accomplishment, the company has been nominated for the 2020 ...

Read more...
Emerson introduces software for flow measurement
July 2020, Emerson Automation Solutions , Flow Measurement & Control
Emerson has released Micro Motion ProcessViz, a standalone, cost-effective software solution for flowmeter process data visualisation. Having an instant visualisation of raw process data translates into ...

Read more...
Exceeding the limits
June 2020, ifm - South Africa , Flow Measurement & Control
The new SM flow from ifm electronic.

Read more...
The complexity of water management in mines
June 2020, Endress+Hauser South Africa , Flow Measurement & Control
Water is a critical resource for the mining industry, either in the mining processes, as a feed to the beneficiation of minerals process, or for potable use. With the growing demand and increased scarcity ...

Read more...
Electromagnetic flowmeter upgrade
May 2020, Instrotech , Flow Measurement & Control
Instrotech has announced that the Kobold magnetic inductive flowmeters MIM and MIS have been upgraded and further developed as follows: Kobold MIM, for measuring and monitoring of conductive liquids, ...

Read more...
Ultrasonic transducer with mini horn array
May 2020, Emerson Automation Solutions , Flow Measurement & Control
Emerson has released the Daniel T-200, a titanium-housed transducer, for its gas ultrasonic flowmeter product line, marking the first use of metal 3D printing to enhance the acoustic performance of ultrasonic ...

Read more...