In-situ Calibration Validation

The TFH 3000's in-situ calibration routine validates the flowmeter's calibration accuracy by testing the functionality of the sensor and its associated signal processing circuitry.

This innovative approach lets you validate instrument calibration in your pipe - at your process conditions - with just a push of a button. At the conclusion of the test, the meter displays a pass/fail message and the calibration data is saved in the meter for review at any time.

During the test, the meter's microprocessor adjusts the signal to the sensor elements and determines the resulting electrical characteristics. These site-determined characteristics are compared with the data that was collected and stored in the instrument electronics during original factory calibration. Matching data within established tolerances confirms the meter is measuring accurately.

Calibration tests are operator-initiated and can be performed at any flow rate, including zero. A test takes only three to four minutes to complete and may be initiated from the front panel, USB connection, RS485 Modbus or HART Protocol. If a calibration test is initiated by the TFH 3000's software tool, a validation certificate can be produced at the conclusion of the test. This feature is especially valuable in environmental monitoring applications where periodic calibration validation is mandated. It can also be used to streamline quality assurance, improve process initiatives and apply scheduled maintenance procedures.

Normal Measurment Mode

In normal measurement mode, the signal processing electronics control the sensor.
In normal measurement mode, the signal processing electronics control the sensor.

Calibration Mode

In calibration mode, the microprocessor controls the sensor and determines the resulting electrical characteristics
In calibration mode, the microprocessor controls the sensor and determines the resulting electrical characteristics

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