Calibration of heat flux meters

Purpose

RISE has helped clients worldwide with accredited calibrations of heat flux meters for many years.

Unfortunately, our calibration furnace is now out of service. 
We aim to replace it with a new and improved custom-built furnace, 
but the time required for installation and commissioning is unknown and the date for restarting the service is therefore not set.

We have asked our accreditation body Swedac to cancel our accreditation during the replacement time.

As soon as the new equipment is verified to our standards, we will resume offering accredited calibrations for our clients.
For those who would like regular update emails during the progress, 
please send an email using the email button under “Ordering” to the right.

Please don’t hesitate to contact us if you have any questions.

Method

The methods used in the new furnace will be in accordance with the following standards:

• ISO 14934-2, Fire tests — Calibration and use of heat flux meters, Part 2: Primary calibration methods (method 2).
   
• ISO 14934-3, Fire tests — Calibration and use of heat flux meters, Part 3: Secondary calibration method, clause 6 Secondary calibration in a primary furnace.

Both methods use a spherical black-body furnace as heat source.

Primary and secondary calibrations

• Primary calibration - 10 heat flux levels.
  Primary calibration is recommended for all your in-house reference meters.
• Secondary calibration - 3 heat flux levels. 
  Secondary calibration is suitable for all daily-use heat flux meters.
  More calibration levels can be added.

Deliveries

When we start with calibrations again, an accredited calibration certificate (ISO/IEC 17025) will be delivered.

More information

Types and design of heat flux meters that can be calibrated

• Total heat flux meters of Schmidt-Boelter or Gardon type
• Smooth or threaded body
• With or without flanges
• Field of view hemispherical (solid angle 180°)and without window
• Housing diameter up to 50 mm
• Sensing surface diameter up to 10 mm
• Cooling water piping must be routed parallel to the axis of the meter (see Fig. 1)