Flow Forum - Recent Threads

RE: Suspected production shortfall linked to test separator

Jared Drennen — Thu, 09 Jul 2026 14:25:25 GMT

You are correct that entrained gas will lower the mixture density, which results in an errantly high Oil Volume. However, Micro Motion's NOC software also includes built-in bubble-remediation capability to prevent this from happening when configured correctly. Please contact Flow.Support@Emerson.com (1-800-522-6277) to discuss your configuration and we will be happy to help optimize your production measurement.

Suspected production shortfall linked to test separator

okpako — Tue, 30 Jun 2026 09:08:24 GMT

Hi, we are getting some issues with our well tests. After testing some wells, results are bad.

The issue is the density measurement- (going below reference density of Oil) and that is impacting WC calculations.

Typically, Coriolis (CMF300) showing density below oil reference as highlighted below usually indicates entrained gas and or process upset.

Coriolis meter has been certified by external ISO lab and found to be in working condition.

what do you guys think?

Inputs/discussions on this would be most welcome.

Regards

Okpako

2700 Tx to 5700 Tx upgrade/change out error message " device description"

okpako — Mon, 15 Jun 2026 05:50:23 GMT

HI Team,

In replacing a 2700 series transmitter with a newer 5700 series on a micromotion CMF300 Coriolis, we are unable to upload the same existing setpoints on the existing 2700 transmitter into the newly procured 5700 transmitters. we get an error message "device description".

Kindly advise what to do or support with step-by-step procedure to address this issue.

Regards

Okpako

RE: 2700 Tx to 5700 Tx upgrade/change out error message " device description"

Jared Drennen — Tue, 16 Jun 2026 13:14:52 GMT

It sounds like the new transmitter is not properly recognizing the sensor type (via the 700 core processor on the sensor). The sensor should be recognized as soon as all of the Flow Calibration Factors are programmed into the new electronics (as stamped on the sensor tag, or published on the associated calibration certificate). If you are still receiving error alerts after these parameters are programmed, please reach out to Flow.Support@Emerson.com with the actual error codes, or call 800-522-6277 for phone support while you are connected to the device (if possible).

RE: 2700 Tx to 5700 Tx upgrade/change out error message " device description"

okpako — Mon, 15 Jun 2026 06:03:49 GMT

the existing setpoints were retrieved with a TREX communicator

RE: [026 - Sensor Comm. Fail] alarm persist days after replacing 2700 with 5700 on a CMF300M356NABZEZZZ

Jared Drennen — Mon, 02 Mar 2026 16:20:07 GMT

I agree with your assessment. If the core processor is not powering on (i.e. no LED lights), even with a new transmitter, then I suspect bad wiring from the transmitter, or a bad core processor. Replacing the core processor would be step 1. However, if the core was damaged due to a power surge that damaged the original transmitter, there may be other issues with the sensor. Since you're removing the core processor anyway, I'd recommend taking resistance measurements from the feedthrough pins underneath to confirm continuity in the drive, pickoff, and RTD circuits. Please refer to Sections 17.15 and 17.36 of the 2700 Config & Use Manual: www.emerson.com/.../manuals-guides-5700-transmitters-configurable-outputs-micro-motion-en-66514.pdf. All further questions can be directed to Flow.Support@Emerson.com (1-800-522-6277).

[026 - Sensor Comm. Fail] alarm persist days after replacing 2700 with 5700 on a CMF300M356NABZEZZZ

okpako — Fri, 27 Feb 2026 21:20:05 GMT

Hi Team,

We encountered frequent alarms on a CMF300 with a recently replaced TX from 2700 series to a more modern 5700 series.

It was reported that weeks before the transmitter replacements on the CMF300 sensor, this alarm was long observed and not acknowledged.

However, after the replacement of the 2700 transmitter with a 5700 transmitter on the same CMF300, the alarm error message was found to still persists. [026 - Sensor Comm. Fail]

On recycle and power on, the core processor LED remains OFF instead of being ON.

it appears the coriolis sensor is not communicating with the transmitter.

Further troubleshooting showed communication from the transmitter to SCADA is okay.

Simulation results are also good.

My Suspicion is on the core processor which i think could be faulty. what do you guys think?

Advice if this issue is only about the core processor which needs to be replaced.

Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

THALES CAMARGO 105 — Fri, 05 Dec 2025 14:41:03 GMT

Team,

Many thanks in advance for your valuable feedback. We have many flowmeters already installed in Anti-surge Loop for Centrifugal Compressor (installed at suction side).

Before ordering these flowmeter, Process conditions (Flow rates, pressure and temperature had been delivered to manufacturer). Besides that, Fluid data also has been shared to manufacturer like: Fluid type, Density at operating base, Specific gravity, Compressibility at operating base, Molecular Weight, Isentropic exponent, Operating viscosity.

In summary, flowmeters are selected according to Engineering design.

Annubar Flowmeter: 3051CFADG300ZCHFS3A3D0072AA1P1V1V2QC7Q8J3G2

Related to Annubar hardware assembly information:

Flowmeter and meter type: 3051CFA - Annubar flowmeter flanged with opposite side support

Sensor size and material: 3 - 316 stainless steel

Line size: 750 mm (30 in) - Schedule: XS - Material: Carbon Steel (A105)

ID (span): 736.6 mm - Wall: 12.7 mm

Pipe orientation: Horizontal

Connection type: 300#RF ASME B16.5

Mounting type and material: 300#RF ASME B16.5

My Questions are focused on configuration and field calibration or verification:

What are the main considerations to properly configure this flowmeter? Do I should set up the pipe diameter, pipe wall and flow type (methane gas) in the flowmeter configuration?

What tool is needed to configure the flowmeter? At site we have the Trex communicator and realized that basic configuration has been seen and retrieved. Is this the only option or is there a software tool that can be used to configure this flowmeter and have the chance to see more technical information related to the Primary element (Annubar) as well?

How do we know if the Annubar sensing ports are starting to clog?

RE: Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

THALES CAMARGO 105 — Sat, 06 Dec 2025 17:57:40 GMT

Thank you so much Dan for your valuable input, sure, I will reach you out in case is needed. Absolutely grateful for sharing your valuable feedback.
Best regards,

Thales

RE: Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

Dan Cychosz — Fri, 05 Dec 2025 23:32:34 GMT

Hi Thales,

Yes, the configuration information (we call it a flow sizing) should be included in the paperwork/documentation provided with the instrument. The transmitter itself does not contain the information, rather it is calculated using Emerson's DP Flow Product Advisor (www.emerson.com/.../dp-flow-sizing-selection-tool) and then the calculation results input into the transmitter for the scaled variable output. If you do not have easy access to the documentation, you may will be able to get a copy from your sales representative or by looking up the serial number on MyEmerson (look under "My Assets" and enter the serial number, you may have to register if not already a user). If neither of those options are available to you, you can email me at dan.cychosz@emerson.com with the serial number or order number.

You're correct on the verification (we don't recommend field calibration unless absolutely necessary or the instrument is found to be well out of range during verification) and zero trim are the same as you would do for a standard 3051CD instrument.

Hope this helps, don't hesitate to reach out for further questions.

Regards,
Dan

RE: Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

THALES CAMARGO 105 — Fri, 05 Dec 2025 23:11:25 GMT

Dan,

Thank you so much for your valuable feedback, really appreciate it. Just to highlight these points, when you said "The 3051CFA will be configured from the factory based on the parameters that you provided during the quotation stage", Is it a chance to see this configuration like Fluid type, Line size, Pipe orientation, ID and Wall, Sensor size ??? By using the TREX, I have not found this information, just a basic information and configuration were retrieved.
Regarding the sentence "There is very little technical information saved in the transmitter for this model" you mean that, as a final user for the I&C team, information stored in Flowmeter is limited when trying to retrieved information with TREX.
Finally, for the 3051CFA calibration or verification, Zero trim and Upper trim (span) can be done like if it were the commonly used 3051CD differential pressure transmitter for flow application.
Good point for the recommended 3051SFA for future considerations.
Thank you Dan again for this final feedback. I am so grateful for this support!

Kind regards,

Thales

RE: Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

Dan Cychosz — Fri, 05 Dec 2025 15:52:32 GMT

Hello,

The 3051CFA will be configured from the factory based on the parameters that you provided during the quotation stage. There should be limited setup required during installation unless you need to change the measurement span, and a zero trim should always be performed upon final installation. Both of these actions can be done with the TREX, but if you are more comfortable with a laptop and HART modem then you can use the AMS device configurator for the 3051C transmitter (www.emerson.com/.../ams-device-configurator).

There is very little technical information saved in the transmitter for this model, if you desire online flow compensation with temperature and pressure you could consider the 3051SFA (www.emerson.com/.../rosemount-sku-3051sfa-annubar-flow-meter). For surge control applications, you may also want to consider the recently introduced 4051SFA (www.emerson.com/.../rosemount-sku-4051sfa-annubar-flow-meter) which is available with a fast time response of <50 milliseconds.

Plugging/clogging is rare for the Annubar due to the slot design. However, the 3051CFA can be ordered with option code DA1 which includes a plugged line diagnostic that will provide an alert if plugging is detected in the instrument.

Hope this is helpful,
Dan Cychosz

RE: Flow application - Annubar Flowmeter 3051CFA - Guidance for Configuration and Field Calibration

THALES CAMARGO 105 — Fri, 05 Dec 2025 14:53:34 GMT

Range from flowmeter is: 0 to 60 in H2O. From sensor information > measurement type: Differential.
If there is a manifold with Isolation and drain/vent valves and Equalizer valve, therefore, calibration for Zero trim and upper range calibration should be done similar to flowmeter 3051CD (commonly used). Thank you again for your valuable feedback related to this technical clarification.

RE: 470XA connecting through RS232 port of FB107

greeshma — Mon, 07 Apr 2025 07:33:36 GMT

how can I manually map registers from 470 XA to fb107? what are the GC register addresses?

470XA connecting through RS232 port of FB107

greeshma — Mon, 24 Feb 2025 10:53:04 GMT

I am trying to connect 470XA with FB107 through RS232. How to map registers and what will FB107 will read when GC goes to calibration mode?

RE: 470XA connecting through RS232 port of FB107

Nick Norenberg — Fri, 28 Feb 2025 16:21:27 GMT

Hello,

If you wish to use the on-board 232 port, I'd suggest going the User Program route. The User Program will allow you to select which comm port you want to configure the Modbus polls for, so you will be able to select the on-board 232. Here is a link to the manual for this program. Please note that you will need to order the program AND the license key to unlock it.

www.emerson.com/.../gas-chromatograph-software-interface-manual-en-133142.pdf

The other option I spoke of was using the GC 485-App module. The app module is the exact same thing as the User Program, it's just a canned solution within a module that can be inserted into any open slot. The only limitation is that the module only comes with a 485 port (this is physically on the module so it will not consume any open ports available on the system).

www.emerson.com/.../gas-chromatograph-application-module-for-floboss-107-flow-managers-user-manual-en-9238666.pdf

RE: 470XA connecting through RS232 port of FB107

greeshma — Fri, 28 Feb 2025 05:30:45 GMT

thanks for reply, So is this can't be achieved by 232 port on CPU module? whether i should procure separate RS485 module mandatory?

RE: 470XA connecting through RS232 port of FB107

Nick Norenberg — Thu, 27 Feb 2025 18:39:44 GMT

Hello,

You will need to use the GC Interface User Program or GC 485-Application Module (with a 232 to 485 converter) for this application. The programs have features to auto-map all GC registers and to do validity checking on the data. One of the checks performed is to see if the GC is in calibration mode. If it is, the program will not push the values into measurement. It will use the last known-good update until the calibration flag has been cleared and a new set of data has been polled from the GC.

RE: Configuration of GC with Floboss 107 without using Application module APP485

greeshma — Fri, 14 Feb 2025 13:04:48 GMT

did you resolve this problem, can we connect 470xa through rs232 port

Configuration of GC with Floboss 107 without using Application module APP485

musabthelion — Mon, 03 Jun 2019 08:44:04 GMT

I am communicating with GC 370XA using serial link with the FB107. Communication is healthy. I am not using any application module to do configuration of GC in FB107.

I defined the registers manually in the GC and read those registers in the FB107.

Please guide me about following

how FB107 will take the value from GC
Component ID numbers, how to define the numbers. Should i take same numbers which i defined in GC register table MAP file.
I am going through the manual but the manual A6270 mostly talks about the application module which i am not using for communication.
I am communicating on COMM2 of CPU (FB107) serial link
If i change gas composition manually in the attached meter setup my value of specific gravity and Btu changes, why is it so? This table is supposed to take the value when i have selected Constant specific gravity value.

Regards,

MUSAB SHABBIR

Emerosn 3418 Ultrasonic Flow Meters failing AGA 9 Test?

Shaiq Bashir — Wed, 02 Oct 2024 19:08:36 GMT

Dears

We carried out the dry calibration factory test of 3418, 8 path 24 inch ultrasonic flow meter and attached are the results of its zero flow verification by individual paths. As per AGA 9 2022, section 4.6.3, the individual path gas velocity shall not be greater than 0.02 ft/sec. Here as can be seen that two paths are outside this limit. What can be done when we have a situation like this?

RE: Emerosn 3418 Ultrasonic Flow Meters failing AGA 9 Test?

jesse.moralina — Mon, 07 Oct 2024 07:49:12 GMT

Shaiq Bashir our technical team would like to speak with you. Please contact our Flow support team at flow.support@emerson.com.

RE: FlowBossS600+ Modbus Mapping

ian firth — Wed, 21 Aug 2024 07:38:51 GMT

1. eventing mode just means if a value is changed via modbus we add it to the event log

2. Field is just the name of the field associated with alarm for example. ADC01 above Low Hi, under range are the ones enabled in the config and why not all are mapped

3.Yes, If field security set to 9 in the actual configuration it is read only. Generally slave maps are all read only

4. These are your basetime reports, You can have up to three different basetimes configured. ie 8am, midnight, 6 pm for when a day starts for example if you have an hourly report this would be basetime 1 period 1 and in your case STR01 PREV FWA VAR1 would be the flow weighted average of the previous hour, by default var1 is pressure, var 2 temperature and basetime 1 prd 2 would most likely be previous day of the same variable, prd 3 will be weekly or monthly again of teh same variable

FlowBossS600+ Modbus Mapping

Moazzam Ali — Tue, 20 Aug 2024 11:49:22 GMT

I'm working on extracting Modbus addresses from an S600+ Flow Computer's 'mbslave.txt' file provided by the client. Unfortunately, I lack the S600config software to open the corresponding '.cfg' file. Given my experience with flow computers and their software, I'm struggling to interpret the Modbus addresses in the 'mbslave.txt' file. I've attached both the 'mbslave.txt' and '.cfg' files for reference. Any guidance on extracting the necessary Modbus addresses would be greatly appreciated.

Thanks

https://drive.google.com/drive/folders/1sr35BYU8lXU0Epohy55le1TnFxrnb6JA?usp=drive_link

RE: FlowBossS600+ Modbus Mapping

Moazzam Ali — Tue, 20 Aug 2024 16:54:48 GMT

Thank you for your suggestion. I have obtained the slave map report, which includes Coil Data Map and Register Data Map sections. I have the following questions:

What is the purpose of Eventing Mode?
How do Field, Bit, and Data relate in the Coil Data Map? I understand that items are mapped to specific bits within a 16-bit register (e.g., "SYS HOST" is mapped to Bit 5 of register 01004). Could you elaborate on the role of "Field" in this context?
The Register Data Map indicates a security level of "Read/Write". Does this mean all registers can be both read from and written to by a Modbus Master?
In the Register Data Map, registers 00058, 00060, and 00062 are associated with "BASETIME 1 PRD 1, 2, and 3". What does "BASETIME 1 PRD 1" represent?

Please refer to the attached images. I appreciate any clarification you can provide.