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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

Views & Versions

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Performance improvements never before possible are gained as the QuadraTherm four-sensor technology isolates forced convection (the critical variable for measuring gas mass flow rate) by calculating and then managing unwanted heat-transfer components, like sensor stem conduction, one of the major causes of false flow readings.

Flow Direction

Flow Direction

Gas flows in direction of the flow pointer.
Electronics Inputs/Outputs

Electronics Inputs/Outputs

Learn more about the electronics "stack", inputs/outputs, and digital communications.

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Insertion Probe

Insertion Probe

316 SS probe shaft, 3/4-inch (1.9 cm) in diameter and up to 72" (182.9 cm) in length
With qTherm, it Learns

With qTherm, it Learns

The qTherm “brain” is a revolutionary living, learning algorithm set made possible only as a result of the latest hyper-fast microprocessors, DrySense Technology, and the QuadraTherm sensor inputs.

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Enclosure

Enclosure

Rugged explosion-proof cast aluminum enclosure for the toughest industrial environments

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QuadraTherm Sensor

QuadraTherm Sensor

Patented four-sensor design incorporates no-drift DrySense velocity sensor and has unique isolation aerodynamics.

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Display

Display

UltraBright multivariable display can be seen from far away; push buttons allow easy setup and adjustment in the field.

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