Parameter
parameter	Technical index
NH3 measuring range	0-100ppm/0-1000ppm/0-5000ppm
measurement method	Electrochemical sensors
measurement accuracy	3%F.s
Response time (T90, seconds)	Less than 60
Warranty	Host warranty is 2 years, gas probe warranty is 1 year
Baud rate	2400/4800/9600
Communication port	RS485/0-5V/0-10V/4-20mA
Power supply	12V-24V DC
Power consumption	≤0.15W（12V DC , 25℃）
Operating temperature	‘-20℃ to +50℃
Working humidity environment	15% to 90%RH (relative humidity), non-condensing
Working pressure range	Standard atmospheric pressure ± 10%
Dimensions	110×85×44mm3
Probe parameters and selection
Numbering	Probe type	Range	Resolution	life
		(ppm）	(ppm）
4HH	import	20	0.01	2years
4G	import	100	0.01	2years
4L	import	1000	0.1	2years
4XXL	import	5000	0.1	2yeaa