ECE provides state-of-the-art HTS systems which include the following features:

  • Conforms to CSIR and Department of Minerals & Energy South Africa’s guidelines on thermal stress.
  • Conforms to the temperature, humidity and air velocity specifications with a high degree of accuracy.
  • All year round operation regardless of ambient conditions.
  • Design conditions are reached quickly with minimal start-up duration.
  • Fully welded stainless steel ducting.
  • Completely automated control system.
  • Conditions inside the chamber can be remotely monitored and calibrated for ease of maintenance.
  • Unique laminar air flow ceiling design to ensure uniform air flow inside the chamber.
  • Construction materials selected for ease of cleaning and hygiene.
  • ECE offers a comprehensive back-uo and maintenance service.


ECE has successfully designed, supplied, installed and commissioned Heat Tolerance Screening Chambers to both gold and platinum mines in South Africa.



Conforms to CSIR and DME Specifications.

Operates Under All Ambient Conditions.

Remote Monitoring.

Fully Automated.

Quick Start-Up Time.



Extract from the Department of Minerals and Energy Guideline on Thermal Stress states:

On Quality Control

“HTS should only be conducted in climatic chambers with a satisfactory degree of environmental control. There should be a monthly internal audit of climatic chamber temperature control and of the accuracy and calibration status of all instrumentation. Comprehensive annual audits of supervision proficiency and of the facility in its entirety should be conducted”

On Hygiene

“It is imperative that a satisfactory standard of hygiene be maintained in order to protect staff and workers. After every test, the climatic chamber should be washed out thoroughly with disinfectant and water”

On Testing

“The HTS test should be carried out at a dry-bulb temperature of 29.5 degC and a wet-bult temperature of 28 degC with a maximum permissible range of 27.7degC to 28.5 degC. The optimum difference between the dry-bulb and the wet-bulb temperature is 1.5 degC. the air movement in the climatic chamber must also be controlled within the range of 0.3 to 0.5 m/s. The test must be conducted at a fixed step rate of 24 steps per minute and a fixed stepping height of 30.5 cm”