Heat Flux & Instrumentation
Thermogage
Vatell's Thermogage line of sensors are circular-foil heat flux transducers, also known as Gardon gauges, that have been used for measuring heat flux for decades.
The all-metal construction and fully brazed joints make these sensors the sturdiest circular-foil transducers available. Many different housing designs are available to adapt to almost any application.
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Product Overview
Vatell's Thermogage line of sensors are circular-foil heat flux transducers, also known as Gardon gauges, that have been used for measuring heat flux for decades.
The all-metal construction and fully brazed joints make these sensors the sturdiest circular-foil transducers available. Many different housing designs are available to adapt to almost any application.
TG-1000 Series Water-Cooled Heat Flux Sensors
Water-cooled circular-foil heat flux gauges have an active heat sink and so are less sensitive to mounting conditions, especially for applications with longer measurement times or high heat flux levels.
Popular models include:
- TG1000-1
- TG1000-0 (flanged)
- TG1000-30 (pipe-style)
TG-2000 Series Conduction-Cooled Heat Flux Sensors
Conduction-cooled circular foil heat flux gauges are designed for applications with short measurement times in which the total amount of heat absorbed by the gauge will not raise its temperature beyond 200°C.
The basic model is:
- TG2000-0
TG-9000 Series Water-Cooled Radiometers
Vatell radiometers are standard heat flux sensors with a window in front of the sensing element to screen out convection so that only radiation is measured.
The window is placed directly on the water-cooled copper surface to minimize its heating, but is not in contact with the sensing element itself.
Sapphire is the standard window material with a spectral range of 0.3–5 microns. Its hardness and chemical resistance allow it to withstand harsh environments.
Other materials such as ZnSe (0.6–17 microns range) are available upon request.
Standard model:
- TG9000-9
Specification Table
| Thermogage | TG-1000 | TG-2000 | TG-9000 |
|---|---|---|---|
| Min. Std. Dia. | 0.5" | 0.250" | 1.0" |
| Min. Std. Length | 1" | 0.5" | 1" |
| Range (Must Specify when ordering****)* | 5 to 5000 W/cm² | 5 to 5000 W/cm² | 10 to 500 W/cm² |
| Max. Sensitivity | 2 mV/(W/cm²) | 2 mV/(W/cm²) | 1 mV/(W/cm²) |
| Accuracy | ±3% | ±3% | ±3% |
| Repeatability | 1% | 1% | 1% |
Transmitters and Panel Meters
A digital readout or an alternate signal type is sometimes required. For those applications Vatell will pair a heat flux sensor with a calibrated Texmate digital panel meter or a Moore Industries signal transmitter. Ask our sales department for more details.