Turbine and electromagnetic (mag) flow meters are used to measure suction and discharge rates on blenders. Turbine flow meters require a calibration factor that should be attached to the meter or rebuild kit. For low flow rates, a 4-inch meter is better than an 8-inch meter. Turbine meters wear out over time but can be rebuilt. Mag meters use flow tube tag information to program the transmitter. Pie frequency generators and LCR meters can be used to troubleshoot mag meters. Manuals provide instructions for setup, programming, and troubleshooting of mag meters.

1. Frac Turbine Flow Meters and
Mag Meters
David Aakre
Technologist

2. Turbine Flow Meters Used for Suction
and Discharge Rate on Blenders

3. Cross Section of Turbine Flow Meter

4. Nu-Flo Nominal Calibration Factors

5. Each Meter Or Rebuild Kit Comes With
a Meter Calibration Number

6. 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.

7. Electro-Magnetic Flow Meters Used
for Suction and Discharge Rate
Endress Hauser
Rosemount Mag meter

8. Cross Section of a Mag Meter

9. Endress Hauser Flow Meters

10. Rosemount Flow Meter

11. Need Flow Tube Tag Information to
Program Transmitter.

12. 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.

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

14. 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.
https://www2.slideshare.net/DavidAakre/rosemount-
magmeter-troubleshooting-guide-239262249
• 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.

15. DAVID AAKRE
TECHNOLOGIST
Pie frequency Meters are handy in trouble shooting turbine flow meters
as well.