SI-301

Sampling Type Fixed Gas Detector

DESCRIPTION

SI-301 is an explosion-proof sampling type gas detector that remotely draws and measures sample gas in real time through a sensor cartridge inside the device. It is designed to help prevent or manage various gas-related incidents such as asphyxiation, poisoning, fire and explosion, or corrosion in hazardous areas across diverse industrial environments.

KEY FEATURES

- Flameproof (Explosion-Proof) Structure
- Cartridge-type Sensor: Easy Maintenance
- Built-in Flow Control Function
- 4-digit Digital Concentration and Flow Display
- Supports: 4-20mA / RS-485 / Ethernet

Product Specifications

Model	SI-301
Size	194(H) x 152.4(W) x 136(D) mm
Weight	4kg
Power Supply	DC : 24V ±10% PoE : 36V~57V (Typical : 48V)
Flow Rate	100~1000ml (Normal: 300~500ml/min)
Power Consumption	Approximately 5.0W
Display	FND, Gas Concentration, Flow, Alarm, Device Error
Relay	Low Alarm, High Alarm, Fault Alarm
Output	4~20mA
Digital Communication	RS-485, TCP Ethernet
Sampling Distance	Sampling Tube: Max 30m (FEP tube) Exhaust Tube: Max 30m (FEP tube)
Tube Specification	1/4” Teflon tube
Operating Temperature	-40℃ ~ +55℃
Explosion-proof Certification	KCs: Ex d IIC T6 Gb
Input & Configuration	4 Buttons, RS485, Ethernet, Bluetooth
Warranty (Device)	2 years
Warranty (Sensor)	1 year
Remote Interface	Ethernet, RS-485, HART (optional)
Wiring	4 to 20mA / DC Power / Relay: Max 14 AWG
Pressure Range	90 to 100kPa
Max. Sample Flow	Max 1,000ml
Max. Sample Pressure	6kPa

Sensor Specifications

Gas	Sensor	Range	A1	A2	Resolution
Oxygen (O₂)	Electrochemical	0~30%Vol	19.0%Vol	23.0%Vol	0.1%Vol
Carbon Monoxide (CO)	Electrochemical	0~500ppm	30ppm	60ppm	1ppm
Sulfur Dioxide (SO₂)	Electrochemical	0~20ppm	2ppm	5ppm	0.1ppm
Hydrogen (H₂)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Hydrogen (H₂)	Electrochemical	0~1000ppm	100ppm	500ppm	within 5ppm
Hydrogen Sulfide (H₂S)	Electrochemical	0~100ppm	10ppm	15ppm	1ppm
Combustible (-)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Combustible (-)	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
Ammonia (NH₃)	Electrochemical	0~100ppm	25ppm	35ppm	1ppm
Acetylene (C₂H₂)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Ethanol (C₂H₆O)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Toluene (C₇H₈)	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
Toluene (C₇H₈)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Methane (CH₄)	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
Methane (CH₄)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Chlorine (Cl₂)	Electrochemical	0~5ppm	0.5ppm	1.0ppm	0.1ppm
Chlorine (Cl₂)	Electrochemical	0~20ppm	1ppm	5ppm	0.1ppm
Carbon Dioxide (CO₂)	IR	0~2000ppm	1000ppm	1500ppm	3ppm
Carbon Dioxide (CO₂)	IR	0~5000ppm	3010ppm	5000ppm	8ppm
Carbon Dioxide (CO₂)	IR	0~5%Vol	0.5%Vol	3%Vol	0.1%Vol
Hydrogen Chloride (HCl)	Electrochemical	0~10ppm	1ppm	2ppm	0.1ppm
VOC (VOC)	PID	0~100ppm	50ppm	100ppm	within 3ppm
Xylene (C₈H₁₀)	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
Hydrogen Peroxide (H₂O₂)	Electrochemical	0~10ppm	1ppm	2ppm	0.1ppm
Nitrogen Dioxide (NO₂)	Electrochemical	0~20ppm	3ppm	5ppm	0.1ppm
Ethylene Oxide (C₂H₄O)	Electrochemical	0~30ppm	3ppm	5ppm	0.1ppm
Ethylene (C₂H₄)	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Nitrogen Monoxide (NO)	Electrochemical	0~100ppm	25ppm	50ppm	1ppm
Hydrogen Fluoride (HF)	Electrochemical	0~5ppm	0.5ppm	1ppm	0.1ppm