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Interactive descriptions, images, and video of unique features and core technologies

Four-Sensor Design Innovation 640i/780i

Advancements to traditional thermal sensor technology for greatly improved accuracy

qTherm Technology

Learn about the revolutionary “brain” inside the instrument as well as Dial-A-Gas, Dial-A-Pipe and the qTherm Gas Library

User Interface

Push-button display & user software manages changes to the meter as well as diagnostics and tuning

Electronics & Inputs/Outputs

Information about options, configuration, output signals and digital communications

QuadraTherm 640i/780i

qTherm Technology

With qTherm, it Learns

qTherm is the “brain” of the instrument and a revolutionary living, learning algorithm set made possible only by today's latest hyper-fast microprocessors and QuadraTherm sensor inputs.

qTherm manages changes in gas selection, temperature and pressure, and outside temperature via a comprehensive heat transfer model using only pertinent variables which  instantly calculate precise, stable and very accurate mass flow measurement.

qTherm is the engine behind the flow meter's capability to change gases (Dial-A-Gas) and pipe sizes (Dial-A-Pipe) in the field, while also allowing gas updates to the instrument via the internet which connects to  update gases in our proprietary qTherm Gas Library.

Perfect Thermal Sensor

Perfect Thermal Sensor

Dr. Olin tells his innovation story and how perfecting the immersible thermal sensor has been his life's work. (Recorded June 2012)

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QuadraTherm Sensor Conquering the Problems

QuadraTherm Sensor Conquering the Problems

Dr. Olin explains how all the problems that existed with Thermal Technology have been solved with the QuadraTherm sensor. (Recorded June 2012)

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Relationship Between QuadraTherm & Outside Temperature

Relationship Between QuadraTherm & Outside Temperature

Dr. Olin explains how the QuadraTherm sensor works together with qTherm to manage for changes in T, P, gas and outside temperature effects. (Recorded June 2012)

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qTherm-Living, Learning Math

qTherm-Living, Learning Math

Dr.Olin explains how the gas library gets better over time through math factors from the qTherm algorithm set. (Recorded June 2012)

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