Model: Sunchex R.H

    Maker: Cofomegra - Italia

SunChex R.H. represents a breakthrough in xenon small light fastness and  weathering testers reproducing in a few days or weeks the damage that occurs over months or years of sun exposure.

SunChex R.H. is the first small testing instrument allowing simulation and control of all weathering parameters and designed with the user in mind so to become the easiest to use xenon tester available.

It provides precise control of critical test parameters including full-spectrum sunlight, irradiance, Relative Humidity and BST black standard temperature.

Low purchase price, low operating cost, at last an affordable and easy to use xenon weathering testing instrument offering:

-  Correlation

-  Acceleration

-  Repeatability

-  Reproducibility of  an  advanced  sun  and  weathering test chamber.

Features:

• •       Broad band irradiance control sensor (300-400 nm) ensures constant irradiance for the whole life of the lamp.
  •       Controlled and monitored irradiance from 25 to 80 W/m² (300-400 nm).
  •       Controlled and monitored temperature at specimen tray level with BST (Black Standard Thermometer). BST range: from 40°C to 90°C. The BST temperature depends on  irradiance level and  ambient temperature.
  •       Controlled and monitored Relative  Humidity. Relative Humidity range: approx. 30 RH to 90 RH. The Relative Humidity RH depends on irradiance level and ambient temperature. Ultrasonic humidifier ensures reliable functioning for long time

Control Panel

1. 1.     Display of the conditions in the test chamber.
   2.     Selector of the displayed value either:
   •     Irradiance expressed in W/m²
   •     Temperature                    
   •     Relative Humidity expressed in %
   3.     Potentiometer for setting of irradiance.
   4.     Potentiometer for setting of the BST temperature.
   5.     Potentiometer for setting of the Relative Humidity.
   6.     Timer to set the test time.
   7.     Start button.
   8.     Stop button.
   9.     Run warning light.
   10.   Water warning light.

Description:

The SunChex R.H. is an equipment to test the fastness of the colour of fabrics, yarns, synthetic and natural leather. This instrument is specifically designed to meet the ISO 105 B02 for fastness testing in the textile sector. In addition SunChex

R.H. can also run almost all other international weathering and lightfastness standards so complying with the vast majority of industry specifications.

By means of a 1500W xenon lamp and controlled moisture conditions through an ultrasonic device, this instrument aims to work following all the testing conditions indicated for the colour fastness assessment of goods.

Samples have to be put horizontally on the flat specimen tray, so also 3D specimens can be conveniently mounted horizontally. The xenon lamp irradiation is filtered by an UV filter installed and is uniformly distributed onto the specimens- tray by a parabolic reflector and by a highly reflecting and opportunely shaped walls. A fan cools the lamp. The BST temperature in the test chamber is continuously measured by a little BST sensor placed on the specimen tray, the control circuit stabilizes the temperature BST in a suitable manner by adjusting the speed of the cooling fan of the chamber by means of an inverter.

Technical Specifications:

Hust Vietnam