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GG01 Water-cooled Sensor

Updated:2025-03-13

Brand: Hukseflux
Model: GG01
Description: 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 c
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Product Details

Overview of GG01 Water-cooled Sensor：

User Manual Instructions

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 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.

Hukseflux invested in brand new manufacturing and test equipment for producing modern Gardon gauges. Each sensor is tested at its rated range. All GG01s are tested to withstand a cooling water operating pressure of 10 bar.

Optionally GG01 may be equipped with a sapphire window (GG01-250-SW). It allows the user to measure only the radiative component of the heat flux.

GG01 Water-cooled Sensor unique features and benefits：

1、Withstands very high heat fluxes

2、Fast response time

3、Equipped with type K thermocouple to measure body temperature

4、Suitable for use in high vacuum

5、Safe storage with a practical protection cap

Recommended uses of the GG01 Water-cooled Sensor：

GG01 is the sensor of choice for high heat flux measurements.

GG01 Water-cooled Sensor application field：

1、Industrial monitoring and control / heat flux and heat transfer measurement

2、Scientific research / heat and heat transfer measurement

GG01 Water-cooled Sensor 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
20, 50 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)