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HF02 Sensor

Updated:2025-03-13

Brand: Hukseflux
Model: HF02
Description: HF02 is a sensor that measures radiant heat flux or thermal radiation in the outdoor environment. A common application is monitoring the radiation emitted by flares. HF02 is certified for use in poten
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Product Details

Overview of HF02 Sensor：

User Manual Instructions

HF02 is Certified for Use in Potentially Explosive Atmospheres

HF02 is used in alarm systems, using the heat flux measurement to issue a warning in case of high thermal radiation exposure of equipment or personnel. It is typically installed close to a flare. A common assumption is that the heat flux level in a safe environment for personnel must not exceed 5 x 103 W/m2 (or 1.5 x 103 BTU/(hr?ft2)). Above that heat flux level, or when the temperature of the sensor body exceeds 70 °C, an alarm is activated. A typical alarm system will include multiple HF01 sensors, all aimed at the main source of radiation, as well as other decision-supporting devices such as camera systems and temperature sensors. The sensor in HF02 measures the heat flux to its black (absorbing) surface, in the plane of the sensor, from a source in the field of view angle. It offers a measurement of the effective exposure for personnel and equipment from a source in the direction it is aimed at the location of the sensor. As the detector is essentially open (it has no protective windows) the measurement is influenced by wind in the same way as any exposed surface such as clothing worn by personnel or the surface of equipment; increased wind speed leads to a reduction of the measured heat flux. Rain on the detector can also lead to cooling and a reduction of the measured heat flux.

HF02 Sensor unique features and benefits：

1、Robust

2、All-weather

3、Suitable for potentially explosive environments

Recommended uses of the HF02 Sensor：

Outdoor flare monitoring

HF02 Sensor application field：

Industrial monitoring and control / heat flux and heat transfer measurement

HF02 Sensor specifications：

Measurand	heat flux sensor temperature
Measurement range	-30 to + 100 °C0 to 15 x 103 W/m2
Sensitivity (nominal)	0.3 x 10?? V/(W/m2)
Model names according to EU type examination	LEX35A, LEX35B or LEX35C
Heat flux sensor	thermopile
Temperature sensor	thermocouple type KX
EC type examination certificate	included in delivery
ATEX rated operating conditions	II 2 G EEx d IIC T6
Electrical data	U[max] 5 V, I[max] 5 x 10?3 A
Rated process temperature range sensor and high temperature cable	-20 to +70 °C
-High temperature cable	3 m (see options)
-Sensor and high temperature cable	IP68
-Low temperature extension cable	IP67
Safety notes	see manual
Maintenance requirements	see manual
Options	?Longer cable: standard length of the high temperature metal sheathed cable as well as the low temperature extension cable is 3 m. Both can be extended up to 100 m ?Sensitivity: we offer dedicated converters for HF02 to provide a standardised output ?Shielding options: the standard version has the sensor body and the high temperature cable connected to the shield/drain wire of the low temperature plastic cable. A shield disconnected from the high temperature metal cable and sensor body is offered as an option