Gas Detector, Gas Sensor, Gas Alarm

Introduction

The SR-3000 combustible and toxic gas detector uses a catalytic sensor, electrochemical sensor or optical ionic sensor, and is an independent detector based on a highly integrated embedded industrial microprocessor. The software is optimized with instruction design and the hardware features a modularization design. The detector is user friendly, stable and reliable. It is easy to be installed and has a strong anti-interference ability.

Application

Metallurgy, chemical industry, petroleum, gas storage, environmental protection and other industries related to flammable, explosive and toxic gases.

Features CAN bus protocol communication interface makes it easy to ad hoc a network. Sensors with fault self-detection and identification which can be replaced on site. The remote controller can be used to control the gas detector The upper and low limit alarm Stable and reliable, strong anti-interference ability and is easy to install.
Detection performance Gas Types
For further information of combustible gases, see
For further information of toxic gases, see Accuracy: ±3% FS Receptivity: <2% Response time: <22s (Combustible gases); For toxic gases, see Electrical properties Power supply: 24VDC±6v Power: <2W Output signal: LCD digital display, 3-wire/2-wire, 4-20mA, RS485 interface, 2 sets of relay output (normal open-point switch output capacity 5A/220VAC), Acoustic-optic alarming Mechanical properties Body shell: ADC12 aluminum alloy Sensor shell: 316 stainless steel Weight: 1.5kg±0.1kg Certification Explosion proof certification: Ex d ⅡC T6 Gb Metrological authentication: CMC Work environment Protection level: IP66 Range of temperature: -40°C --+70°C (Combustible gases) -10°C--+50°C (Toxic gases) Range of humidity: 10—95%RH List of Common Flammable and Explosive Gases for SR-3000 Detector

Name	Molecule formula	Relative density	Combustion limit
			The low limit	The upper limit
Methane	CH4	0.55	5	15
Toluene	C6H5CH2	3.2	1.2	7.1
Methanol	CH2OH	1.11	6.7	36
Methyl formate	HCOOCH2	2.07	5	23
Ethyl formate	HCOOCH2CH3	2.65	2.8	16
Methyl ethyl ether	CH3OCH2CH3	2.1	2	10.1
Ethane	CH3CH3	1.04	3	12.5
Acetylene	CH≡CH	0.9	2.5	100
Ethanol	CH3CH2OH	1.59	3.3	19
Ethylbenzene	CH3CH2C6H5	3.66	1	6.7
Ethylene	CH2＝CH2	0.97	2.7	36
Methyl acetate	CH3COOCH3	2.56	3.1	16
Ethyl acetate	CH3COOCH2CH3	3.04	2.2	11
N-butyl acetate	CH3COOCH2CH2CH3	4.01	1.7	7.3
Propane	CH3CH2CH3	1.56	2.1	9.5
Propanol	CH3CH2CH3OH	2.07	2.1	13.5
Propylene	CH2＝CHCH2	1.5	2	11.1
Acetone	(CH3)2CO	2	2.6	12.8
Butane	C4H10	2.05	1.9	8.5
Butanone	CH3CH2COCH3	2.48	1.8	10
Butadiene	CH2＝CHCH=CH2	1.87	2	12
Pentane	C5H12	2.48	1.4	7.8
Hexane	CH3(CH2)4CH3	2.97	1.1	7.5
Heptane	C7H16	3.46	1.1	6.7
Octane	CH3(CH2)3CH3	3.93	1	6.5
Carbon monoxide	CO	0.97	12.5	74
Ammonia	NH3	0.59	15	33.6
Hydrogen	H2	0.07	4	75
Benzene	C6H6	2.7	1.3	7.1
Isobutane	(CH3)2CHCH3	2	1.8	8.4
Isopropyl alcohol	(CH3)2CHOH	2.07	2	12
Cyclohexane	CH2(CH2)4CH2	2.9	1.3	8
Propylene oxide	CH3CHCH2O	2	2.8	37
Ethylene oxide	CH2CH2O	1.52	3.6	100
Two ethyl ether	(CH3CH5)2O	2.55	1.9	36
Dimethyl ether	(CH3)2O	1.59	3.4	27
Xylene	C6H4(CH3)2	3.66	1	7
Gasoline	C4~C12 Hydrocarbon mixtures	0.73	1.3	7.1

List of Common Toxic Gases for SR-3000 Detector

Name	Molecular formula	Range (PPM)	Response time (s)
Oxygen	O2	0-25
Carbon monoxide	CO	0-1000
Hydrogen sulfide	H2S	0-100
Hydrogen	H2	0-1000
Ammonia	NH3	0-1000
Chlorine	CL2	0-20
Nitric oxide	NO	0-500
Nitrogen dioxide	NO2	0-50
Sulfur dioxide	SO2	0-100
Vinyl chloride	C2H3CL	0-100
Acrylonitrile	C3H3N	0-200
Methanol	CH3OH	0-500
Formaldehyde	CH2O	0-500
Ethylene oxide	C2H4O	0-200
Hydrogen chloride	HCL	0-50
Hydrogen cyanide	HCN	0-30
Hydrogen fluoride	HF	0-10

Application areas Air Conditioning and Ventilation Gas Detection Biogas Plant Gas Analysis