Use Instruction

17
Screen shows “Err 3”
Out of measurement
range (PEF Value ＞
999L/min)
Remeasure or replace other
equipment to measure
The display suddenly
disappears.
The battery is loose.
Reinstall the battery
NOTICE:
 If you take the above measures, the electronic peak flow meter still can not
be used normally, it is recommended to contact the manufacturer or dealer.
7 Product features
Classified by type of electric shock
Internal power supply
Classified by the degree of protection
against electric shock
Type BF application part
Degree of IP protection
IP22
Classification of safety levels when used
in the presence of flammable anesthetic
gases mixed with flammable anesthetic
gases or nitrous oxide mixed with air
Non-AP/APG Device
Classified by operating mode
Continuous
Classification of sterilization method
Non-Sterile Medical Device
8 Technical Specifications
Product name
Electronic peak flow meter
Model
DL-DF01
Measurement principle
Infrared interruption
Wight
108.0±1.0g
Size
61.49mm×88.86mm×126.70mm（H×W×D）
Power supply
d.c.3.0V (2pcs AAA LR03 batteries)
Measurement range
50~999L/min
Accurancy
±10L/minor ±10%, whichever is greater