1.1. Working principle

oxygen

The core component of MAP-200 is an electrochemical oxygen sensor. The principle of the sensor is similar to that of a battery. When gas passes through the sensor, the sensor can generate current corresponding to the gas concentration. The current value can be converted to the concentration value and displayed on the display screen. The sensor has excellent strength and stability, high repeatability and fast response speed. Even if the oxygen concentration is high, the sensor will not be saturated, so the application range of MAP-200 is very wide, the range is 0-99.9%, and the display accuracy is very high - in addition, the speed and accuracy are still excellent.

Carbon dioxide

CO₂ sensor is a kind of independent non-dispersive infrared sensor, which is equipped with infrared light source and single wavelength filter. The sensor is a whole, without moving parts, and has a very strong structure. The range of CO₂ sensor is 0-99.9%. Sensors are calibrated only once every six months, and readings are not affected by humidity or temperature.

1.2. Technical parameter

check the accuracy	O2： ±0.1%（Absolute accuracy）@ O2≤10.0% ±1%（Absolute accuracy）@100%≥O2≥10.0% CO2： <±2.0%@ Full range（at20℃）
Detection mode	O2：Electrochemistry CO2：Non-dispersive Infrared Sensor（NDIR)
Detection range	O2: 0~99.9% (Resolving power：0.1%) CO2：（0-20%,0-60%,0-99.9%)
response time	Adjustable，6～10 秒
Sensor life	Oxygen sensor for 5 years; Carbon dioxide sensor for 3 years
Minimum required sample gas	<15ml
Gas sampling	The built-in pump inhales automatically through the testing needle
calibration	Oxygen: 1 point calibration (air) Carbon dioxide: 2-point calibration (gas calibration)
user interface	7 inch color touch screen
Power Supply	AC220，50HZ
ambient temperature	0-40 Centigrade
Ambient humidity	<95 %RH
size	370mmx320mmx250mm (LxWxH)
weight	2.1 Kg