DuoRui DR-650-O2 and Bosean BH-90M-O2 compare

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Model selection comparator If you have any questions, please click below Service	DuoRui DR-650-O2 Gas Detector In coming China Detail	Bosean BH-90M-O2 Gas Detector 648.0 RMB China Detail

Model comparison

Type	Portable	Portable
Number of Gases	Single gas	Single gas
Sensors	Electrochemistry
Gases	O2	O2
Sampling Mode	Diffusion	Diffusion

Parameter comparison

Sensors principle	Electrochemistry
Detect gas	Oxygen O2
Sampling method	diffusion
Range	0~30%vol
Humidity	<95%RH
service life	2 to 3 years (determined by Sensors)
Protection level	IP65
alarm point	High and low alarm point	It can be set manually, and the default alarm points for different gases are different.
Response time	T90<60s	T90<60s
Resolution	0.1%VOL	0.1%vol
operating temperature	-20~50℃
display error	≤±5%F.S
Operating Time	≥100h	Continuous use of not less than 8h
Weight	150g	≤ 172G (without portable accessories)
Dimensions	1107030mm
display content	Time + electricity + gas name + gas concentration value
Display	OLED LCD screen

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