Turbine Flowmeters Spare Internals and Parts

Turbine Flowmeters Spare Internals and Parts

Replacement Parts and Calibrated Internals
Hoffer turbine flowmeters are easily repaired in the field with a minimum number of tools. A spare complete set of calibrated internals can provide nearly continuous operation of a flowmeter that has been damaged or needs to be recalibrated, and are available in all sizes. Calibrated kits are supplied with a NIST traceable calibration data sheet. For detailed technical information, refer to the “Hoffer Engineering Guide”. When ordering replacement or spare parts, please provide the Hoffer model number or serial number of the original unit.

Turbine Flowmeters Spare Internals and Parts

Principle of Operation:
Hoffer inline turbine flowmeters are velocity measuring devices, which is to say they measure the average velocity of a fluid flowing through the body of the meter. Mounted within the body of a Hoffer liquid turbine flowmeter is a vaned rotor. The rotor is centered on a shaft and allowed to rotate by means of bearings. The shaft is supported in the housing by tube bundles that also provide a measure of flow conditioning for the fluid stream.

The rotor is made from a ferromagnetic material or contains a magnet within the hub of the rotor. Liquid flowing through the meter body engages the rotor forcing it to rotate. The rotational velocity of the rotor is proportional to the average linear velocity of the liquid flow stream. This rotational velocity is transformed into an electrical frequency signal by means of a non-intrusive sensor or coil threaded partially into the body of the meter aligned with the rotational circumference of the rotor. Being in close proximity to the ferromagnetic or magnetic rotor creates an electromagnetic coupling with the coil. The output frequency of the coil then is directly proportional to the rotational velocity of the rotor. This frequency can then be converted to a flow rate indication or scaled signal by dividing the frequency by the meter’s scaling or K-factor (e.g. pulses per gallon or pulses/liter). The K-factor is established by factory calibration of the flowmeter at the time of manufacture.

Turbine Flowmeters Spare Internals and Parts

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    We offer complete flow measurement packages for the offshore drilling, production and well-servicing environments.

    We offer complete flow measurement packages for the offshore drilling, production and well-servicing environments.

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