Bosean CD4 and Bosean BH-4 compare

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Model selection comparator If you have any questions, please click below Service	Bosean CD4 Gas detection alarm instrument 1680.0 RMB China Detail	Bosean BH-4 Gas detection alarm instrument In coming China Detail

Model comparison

Type	Portable	Portable
Number of Gases	Various gases	Various gases
Sensors	Electrochemistry Catalytic combustion	Electrochemistry Catalytic combustion
Gases	H2S CO O2 Miscellaneous	H2S CO O2 Ex
Sampling Mode	Diffusion	Diffusion

Parameter comparison

Expansion gas	Default: methane, O2, H2S, CO four gases	Supports more than 30 kinds of Sensors, flexible configuration, and can be customized according to customer needs. Default: EX, O2, H2S, CO four kinds of gas
CH4-range	(0.00~4.00)%
default precision	甲烷: 0.01%vol, O2: 0.1%vol ,H2S:1ppm, CO: 1ppm	EX: 1% LEL, O2: 0.1% vol, H2S: 1ppm, CO: 1ppm
Detection Accuracy	Depending on Sensors (Table 1)	≤ ± 2% FS (depending on Sensors)
Sampling method	diffusion	diffusion
Concentration unit	ppm、mg/m3、%VOL、%LEL(可切)	ppm、mg/m3、%VOL、%LEL(可切)
Response time	Methane: no more than 20s, oxygen: no more than 35s, carbon monoxide: no more than 45s, hydrogen sulfide: no more than 45s	T90<30s
Operating language	Switch between Chinese and English	Switch between Chinese and English
Display	2.0-Inch LCD display with a resolution of 320 * 240	2.4-Inch LCD display with a resolution of 320 * 240
Alarm method	Sound, light, vibrationFour ways of sound and light vibration display	Sound, light, vibrationFour ways of sound and light vibration displayLCD display real-time data and system status, Light Emitting Diode, sound, vibration indication alarm, fault and underVoltage
Alarm method	Sound, light, vibrationFour ways of sound and light vibration display	Sound, light, vibrationFour ways of sound and light vibration displayLCD display real-time data and system status, Light Emitting Diode, sound, vibration indication alarm, fault and underVoltage
Operating Temperature	-20~50℃	-20~50℃
Power	3.7V rechargeable lithium battery, battery Capacity 2000mA	3.7V rechargeable lithium battery, battery Capacity 1800mA
Sensors Life	24 months	24 months
Charging time	Charging time is less than 7 hours, continuous work for more than 8 hours	Charging time is less than 7 hours, continuous work for more than 8 hours
data storage	500 sets of data storage	500 sets of data storage
data transmission	USB interface data transmission, equipped with PC software, can query and export alarm record data, which is convenient for comparative analysis and observation of data changes	USB interface data transmission, equipped with PC software, can query and export alarm record data, which is convenient for comparative analysis and observation of data changes
Explosion-proof sign	Exib's B T3 Gb	Exib's B T3 Gb
Environment humidity	0~95% RH non-condensing	0~95% RH non-condensing
Shell material	ABS+PC	ABS+PC
Dimensions	1306730mm	1456928mm
Weight	400g	400g
alarm point	Methane: 1.00% CH4, Oxygen: 18.0% O2, Carbon Monoxide: 24x10 ^ -6CO, Hydrogen Sulfide: 50x10 ^ -6H2S
CO-range	(0~1000) 10^-6	0~1000ppm
H2S-range	(0~100)10^~6	0~100ppm
O2-range	0 ~ 25% VoL	0 ~ 30% VoL

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