1、 Product Overview:
The EYHL-1AZ portable chlorine dioxide tester is suitable for detecting the concentration of chlorine dioxide in large, medium, and small water plants, industrial and mining enterprises, domestic or industrial water, in order to control the chlorine dioxide in water to achieve the specified water quality.
2、 Product principle:
This instrument applies the principle of microcomputer photoelectron colorimetric detection to replace the traditional visual colorimetric method. Eliminating human error, the measurement resolution is greatly improved.
3、 Technical parameters:

measuring range	0-5.00mg/L
Zu (i) small indication value	0.01mg/L
repeatability	≤2%
accuracy	± 5% FS ± 1 word
supply voltage	9V
Usage environment	Temperature: 0~40 ℃; Humidity: 0~90% (no condensation)

1. Microcomputer, touch sensitive keyboard, full Chinese menu, backlit high brightness LCD display for numerical values, operation and calibration process all in Chinese prompts, easy to use.
2. It can automatically zero and perform 5-point automatic correction, and has functions for non-linear data processing and data smoothing.
3. This instrument adopts a high-intensity long-life light source, and its special constant light source semiconductor emitter makes the light source constant and stable. The light source has a lifespan of up to 20 years and can be used directly without preheating when turned on.
4. Adopting a rectangular optical glass colorimetric dish, the surface is smooth and polished, overcoming the measurement error caused by uneven thickness of the tube wall in the circular tube colorimetric dish, with good repeatability and more accurate measurement.
5. This instrument integrates multiple independently designed achievements, is technologically advanced, and complies with the national standard GB/T5750-2006 for drinking water hygiene.