深圳华清仪器仪表有限公司本公司有惊喜 

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DISSOLVED OXYGEN METER 
Model : YK-22DO 
* 0 to 20.0 mg/L, 0 to 50.0 oC, oC/oF. 
* Automatic temperature compensation. 
* RS232, Hold, Record (Max., Min.) 
* Probe head with diaphragm set and electrolyte are included. 
* 4 meters cable, heavy duty. DISSOLVED OXYGEN METER 
Model : YK-22DO 
* 0 to 20.0 mg/L, 0 to 50.0 oC, oC/oF. 
* Automatic temperature compensation. 
* RS232, Hold, Record (Max., Min.) 
* Probe head with diaphragm set and electrolyte are included. 
* 4 meters cable, heavy duty.