High-temperature heat flux sensor HFS01

robustwater-cooled

Overview
The HFS01 is an industrial water-cooled heat flux sensor engineered to withstand extreme radiative and convective heat flux levels. Its robust, all-metal body, high-temperature cabling, and IP67 rating deliver dependable measurements to withstand challenging conditions in industrial applications. A removable mounting flange simplifies robust, repeatable installation. It is designed for applications like metal furnaces, refractories and concentrated solar power. To measure even higher heat flux levels, see also our GG01 sensor.

Key features
• Industrial high-temperature capability: Sensor and high-temperature armored cable withstand temperatures up to 900 °C (reduced to 650 °C with optional black coating).
• Robust all-metal body: Fully sealed stainless steel casing prevents moisture penetration, ensuring reliable performance during long-term outdoor installation and repeated handling.
• Armored high-temperature cabling: Features a metal-sheathed cable with interlocked spiral stainless-steel armor connected via a rigid coupler to survive harsh conditions.
• Electrical safety and insulation: Signal wires are electrically insulated from the sensor body, complying with CE and ATEX industrial safety standards.
• Integrated surface temperature sensor: Incorporates a Type K thermocouple to monitor absolute surface temperature and approximate body temperature.
• Trend-monitoring and comparative testing: Optimized for monitoring trends relative to a reference point in time or comparing heat flux between different locations.
• Ingress protection: Rated IP67, providing reliable waterproof protection under harsh industrial conditions.
• Traceable calibration: Calibration is traceable to SI units, with factory calibration following the recommended practice of ASTM C1130-17.

Applications
• Trend-monitoring and comparative measurement of heat flux and surface temperature in industrial installations.
• Furnaces, boilers, and ovens.
• Fluidized beds.
• Distillation columns.
• High-temperature equipment in explosive environments requiring ATEX compliance.

Specifications
• Measurand: Heat flux [W/m²]
• Measurand: Temperature [°C]
• Heat flux sensor technology: Thermopile
• Temperature sensor: Thermocouple Type K
• Measurement range: (-1000 to +1000) x 10³ W/m²
• Sensitivity (nominal): 9 x 10⁻⁹ V/(W/m²)
• Recommended number of sensors: 2 per measurement location
• Calibration traceability: To SI units (ASTM C1130-17)
• Rated operating temperature ranges:
• Sensor and high-temperature cable: -30 to +900 °C
• Optional black coating: -30 to +650 °C
• Low-temperature extension cable (PTFE jacket): -30 to +240 °C
• IP protection class: IP67
• Standard cable lengths:
• High-temperature cable: 1 m
• Low-temperature extension cable: 3 m
• Order code standard configuration: IHF01 - high temperature cable length in m - low temperature extension cable length in m

Options and accessories
• Cable length options: Longer cable (specify total cable length for both cable types in m)
• Sensor coating: Optional black coating (operating temperature up to 650 °C)
• Certification: EC type examination certificate (ATEX) II 2G Ex db IIC T6
• Connector options:
• Connector at IHF01 cable end
• Chassis connector with internal wiring (color code of wiring identical to cable color code)
• Low-temperature extension cable with two connectors (matching cable connector and chassis connector)
• Mounting: Two mounting flanges attached to the body (suitable for spring-loaded bolts and tack-welded threads)