Calibration of Flow Meters per NFPA 25 - where do you get this done?

[fpssdave]

From the 25 2014 Handbook:
8.3.3.1.4 Where 8.3.3.1.2.2 or 8.3.3.1.2.3 is used, the flowmeter shall be adjusted immediately
prior to conducting the test in accordance with the manufacturer’s instructions.
8.3.3.1.4.1 If the test results are not consistent with the pr evious annual test, 8.3.3.1.2.1 shall
be used.
Commentary: "Flowmeters are used only once a year and, as a result, must be adjusted and calibrated prior to
conducting the annual flow test. If a test using a flowmeter shows a material deviation from the
previous year’s test, the pump is required to be retested using hose streams."
8.3.3.1.4.2 If testing in accordance with 8.3.3.1.2.1 is not possible, a flowmeter calibration
shall be performed and the test shall be repeated.

If it's not against posting rules, anyone care to share where they get this done? I have searched high and low.

Thx
D

 

[LCREP]

Did you call the mfg of the flow meter?

 

[cdafd]

You might contact a backflow company to see if they do it, or know someone that does.

I wonder if just the gauge needs it or the entire assembly

 

[fpssdave]

Preso is the flow meter brand and I actually see a lot of them up here but there is nothing on the internet about the manufacturer oddly enough. I have sent emails to several of their distributors without a reply. Nothing like a phone call though.

And yes, just the gauge requires calibration but they're quite the gauge.

Thx for trying.

 

[cdafd]

If you feel the only part of the assembly,that has to be calibrated is the gauge...

You will propably find it is cheaper to replace it with a new calibrated,,, than having it tested.

 

[danw2]

My bad - Preso appears as part of Avensys, but it is a Canadian firm.

Preso made (maybe still makes after whatever transition happened) DP flow elements and they had DP gauge setup in a carry case with tubing for measuring DP drops. I didn't know that they had a backflow test kit.

If the device-in-review is a backflow test kit, there's a list of places that calibrate MidWest backflow test kits here:

It is likely that any service setup to calibrate one brand of backflow test kit can calibrate another brand.