HACH Photometer LDO II

HACH Photometer LDO II

Hash HACH freshwater aquaculture industry

-Hash LDO II AQS fluorescence method membrane free dissolved oxygen probe

The sensor cover at the front end of the LDO II AQ probe is covered with a layer of fluorescent material. The blue light emitted by the LED light source illuminates the fluorescent material, which is excited and emits red light; A light spot pool detects the time required for fluorescent substances to return to the ground state from emitting red light. This time is only related to the emission time of blue light and the amount of oxygen. The probe also has an LED light source that emits red light while emitting blue light, serving as a reference for the blue light emission time. The more oxygen there is around the sensor, the shorter the time it takes for the fluorescent substance to emit red light. Calculate the concentration of dissolved oxygen based on this.

哈希HACH 光度计 LDO II

哈希HACH 淡水水产养殖行业
– 哈希LDO II AQS荧光法无膜溶解氧探头
LDO II AQ探头前端的传感器罩上覆盖有一层荧光物质，LED光源发出的蓝光照射到荧光物质上，荧光物质被激发并发出红光；一个光点池检测荧光物质从发射红光到回到基态所需要的时间。此时间只和蓝光的发射时间以及氧气的多少有关。探头另有一个LED光源，在蓝光发射的同时发射红光，作为蓝光发射时间的参考。传感器周围的氧气越多，荧光物质发射红光的时间就越短。据此计算出溶解氧的浓度。