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Flowmeter Technology

How to Correctly Install Flowmeters?

Outline of this Article

● Installation Steps

● Installation Instructions

● Special Notices

● Incorrect Installations

Installation Steps：

Step 1. Ensure the flowmeter is installed in a perpendicular manner.	Step 2. Separate the adapter from both ends of the main flowmeter body.	Step 3. Install the adapters.

Step 3-1. Thread adapters are needed to be installed using Teflon seal tape for better leakage prevention.	Step 3-2. Regarding weld adapters, glue both adaptors and the pipeline with PVC glue. Ensure the inner sides of the adapter and the outer side of the pipe are both smeared with glue, and then proceed to glue them together.	Step 4. Install the flowmeter only after the glued pipe is completely dry and the glue fumes have completely evaporated. Do not use tools to handle the flowmeter body – tighten the union nuts to the flowmeter using your bare hands.

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Installation Instructions：

The following table illustrates the advisable distance that needs to be maintained between the adapter and main body after installation, per flowmeter model. If the pipeline slightly moves, ensure that the distance is lower than the one specified in the given table, and after installing the flowmeter body, fixate the pipeline once more. If the pipeline cannot be moved, ensure that its distance is equivalent to the given numbers in the table for the best results.

Series	Distance
F10	102.9mm
F20	122.7mm
F22	120.5mm
F30	187.1mm
F34	186.5mm
F32B	127mm
F45	228mm

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Special Notices：

1. Certain flowmeters contain magnetic materials – ensure that these fit your needs.

2. The following tips are advised in order to prevent damaging the flowmeter and void its warranty：

● The PC body can only tolerate clean tap water without any chemicals, cleaning detergents or other solvents.

● Both PC and PSU materials cannot tolerate organic compounds which might damage the flowmeter.

● Before making a purchase, validate that the flowmeter’s various parts are suitable for your purposes regarding factors such as operating temperatures, as every industry has different requirements

● The flowmeter’s body materials, PC and PSU, both cannot tolerate the following substances：

- PVC glue and the fumes it emits, and PVC lubricants (oils or ointments).

- Therefore, since the adaptor was glued to the main pipe using a PVC lubricant, the flowmeter body can only be installed after the PVC lubricant is completely dry.

● Flowmeters must be installed perpendicularly to the ground to ensure proper accuracy. Misalignment may cause the O-ring seals to leak and thus reduce the flowmeter’s lifetime.

● Tighten the union nuts only using your bare hands, and refrain from using tools. Installation using inappropriate tools may cause the union nuts, adaptors, thread or seal to break.

● Flowmeters cannot be used to support pipeline, so please make sure the main pipe is installed firmly.

● Incorrect pipe installation may cause leakage and damage to the flowmeter.

● Water hammers might also damage flowmeters.

● UV radiation might damage the meter body, so please use a UV-resistant cover for the flowmeter when flowmeters are installed outdoors.

● Voluntarily dismantling or modifying the unit might cause damage.

● The maximum recommended working pressure to avoid damage is 6kg/cm2.

3. Mismeasurement might arise from the following reasons：

● The liquid’s specific gravity differs from the flowmeter’s specific gravity.

● The liquid contains particles of suspended matter.

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Incorrect Installations：