Frac turbine flow meters and mag meters

Frac Turbine Flow Meters and Mag Meters

David AakreTechnologist

Turbine Flow Meters Used for Suction and Discharge Rate on Blenders

Cross Section of Turbine Flow Meter

Nu-Flo Nominal Calibration Factors

Each Meter Or Rebuild Kit Comes With a Meter Calibration Number

Turbine Flow Meter• Calibration Factor should come with meter or rebuild kit and should be

attached to meter.• Nominal Calibration Values can be used for meters as a reference point

if calibration number is missing such as 3 pulses/ gal for a 8 inch turbine flow meter.

• For low flow rates 15 Barrels a minute or less a 4 inch meter would be better to use than a 8 inch meter.

• Turbine flow meters wear out and become less efficient but can be rebuilt.

• Mag Pick Up Sensors are used to measure pulses.• Arrow on Meter shows which direction to install.• Software measuring Rate usually uses calibration number from meter.

Electro-Magnetic Flow Meters Used for Suction and Discharge Rate

Endress HauserRosemount Mag meter

Cross Section of a Mag Meter

Endress Hauser Flow Meters

Rosemount Flow Meter

Need Flow Tube Tag Information to Program Transmitter.

Mag Meter Set Up• Rosemount mag meters use the flow tube tag information to program the

transmitter.• Follow company guide lines on set up because each company has their specific

programing instructions to match their software. Accufrac set up is different than NOV Rolligon Set UP.

• Endress Hauser flow tube and transmitter are a match and comes with a calibration chip.

• Flow Tube has a arrow on it for direction of flow.• All Transmitters can be used to Auto- Trim or Zero Mag meter. They must be shut in

and full of liquid not moving. Coil Freq. must be 30• Pulse Test Mode can be used to simulate a rate. 1000 hertz simulated will most

likely give you max flow rate.• Review Manufacture Manual for instillation instructions and trouble shooting steps.

Most manuals have flow charts for programming instructions and how to zero meter.

Pie Frequency Meter and LCR Meter are Used to Trouble Shoot Mag meters

Mag Meter Trouble-Shooting• Pie Frequency Generator can be used to simulate frequency

through mag meter cables to check software, connections, and cables.

• LCR meter is used to check flow tube electrodes while in process full of liquid. http://www.slideshare.net/DavidAakre/rosemount-magmeter-troubleshooting-guide

• The above link will take you to a very good manual on how to trouble shoot a mag meter with LCR meter and its easy to do.

• On transmitter, press Aux Functions until Pulse Output Test is displayed. Use the left arrow to move from left to right, and up arrow to increase numbers. 1000 Hz = Max Rate.

DAVID AAKRE TECHNOLOGIST

Pie frequency Meters are handy in trouble shooting turbine flow meters as well.