News | December 6, 2012

Fox Thermal Announces Zero CAL-CHECK Feature On Fox Model FT3


Fox Thermal Instruments announced recently the release of the new Zero CAL-CHECK Calibration Validation feature.  Zero CAL-CHECK is a companion test to the CAL-V Calibration Validation feature available on the Fox Model FT3 Thermal Mass Flow Meter & Temperature Transmitter. Where CAL-V tests the functionality of the sensor and its associated signal processing circuitry, Zero CAL-CHECK does the following:

  • Checks for build-up on sensor that could affect calibration
  • Further validates the zero stability of the meter
  • Checks thermal conductivity (heat transfer) repeatability of the sensor

Unlike CAL-V, which may be performed in the pipe and at process conditions, Zero CAL-CHECK must be performed at zero flow to ensure a valid test result.  Depending upon the configuration – insitu or out of pipe – zero flow will either be compared to a customer-established field baseline or a factory baseline.

Like CAL-V, if Zero CAL-CHECK is initiated by using the free FT3 View software, a Calibration Validation certificate can be produced at the conclusion of the test.A passing CAL-V in-situ sensor and electronics test,combined with a passing Zero CAL-CHECK test, provides complete validation of flow meter calibration accuracy,including confirmation that the sensing elements are clean.This feature is of particular value in environmental monitoring applications such as flare and vents where periodic calibration validation is mandated.

About Fox Thermal Instruments, Inc.
Fox Thermal Instruments is a privately owned and operated company that is rapidly growing and has recently expanded their operations to a larger facility.  With the demand for monitoring devices growing each year, Fox strives to become the leader in innovative products and to provide exceptional customer service.

Fox’s commitment to producing quality, cost-effective instruments has helped the company build strong relationships with its customers at home and abroad.  For more information, visit

Source: Fox Thermal Instruments, Inc.

Fox Thermal Instruments, Inc.