GG01 Gardon gauge

high heat flux sensor with practical protection cap for transportation and storage

The optional GG01-250-SW has a sapphire window to measure radiative heat flux only

Gardon gauge water-cooled high heat flux sensor

GG01 is a water-cooled sensor that measures heat flux. The Gardon gauge sensor is based on copper and copper alloys, and works at heat flux levels at which other sensors get toasted. Optionally GG01 can be equipped with a sapphire window; to measure radiative heat flux only, and not convective heat flux. GG01 has an on-board thermocouple type K and is available with various dedicated measurement ranges.

Specifications

Measurand

heat flux

Measurement range

(250, 500, 1000) x 10³ W/m²

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Specifications

Measurand

heat flux

Measurement range

(250, 500, 1000) x 10³ W/m²

Measurand in SI units

irradiance in W/m²

Sensor technology

Gardon

Rated cooling water flow (see manual for more information)

> 50 l/h (0.014 l/s)

Nominal response time (63 %) at different rated measurement ranges

250 x 10³ W/m²

250 x 10⁻³ s

500 x 10³ W/m²

200 x 10⁻³ s

1000 x 10³ W/m²

100 x 10⁻³ s

Limiting measurement range

150 % of rated measurement range

Output signal

DC voltage

Output signal range

> 5 x 10⁻³ V at rated measurement range

Full field of view angle

180°

Calibration traceability

to ITS-90

Calibration laboratory

-management system certification

ISO 9001

-accreditation

not accredited

Calibration method

secondary calibration method according to ISO 14934-3

Standard cable length

2 m (see options)

Order code standard version

GG01/rated measurement range/cable length

Options

rated measurement range (250, 500, 1000) x 10³ W/m²
sapphire window (for GG01-250 only)
longer cable (specify either 5 or 10 m)

Downloads

GG01 heat flux sensor brochure

GG01 heat flux sensor user manual

Description

GG01 measures heat flux in the range of (250 to 1000) x 10³ W/m². Equipped with a black absorber, heat flux sensors of this type are designed for measurement in an environment in which heat flux is dominated by radiation. Using an open detector, GG01 is also sensitive to convective heat flux.

The GG01 Gardon gauge sensor, based on thermocouple materials, generates an output voltage proportional to the incoming irradiance. A type K thermocouple measures the body temperature. The sensor is water-cooled. Water cooling is usually supplied by tap water.

There are 3 versions of GG01; each with a different rated measurement range, sensitivity and response time. Irradiance ranges are (250, 500 and 1000) x 10³ W/m², for GG01-250, GG01-500 and GG01-1000 respectively. The body is equipped with a flange for easy mounting. GG01-250 may be equipped with a sapphire window. See options.

GG01 modern Gardon gauge for high heat flux measurement

GG01 is made using oxygen-free high thermal conductivity copper and thin foils of a copper-nickel alloy. The sensor is called “Gardon gauge” after its inventor Robert Gardon. The benefit of this technology is that it can withstand very high heat fluxes.