SENKO

SI-100 is an excellent fixed gas detector to detect toxic gases, combustible gases and oxygen deficiency, installed in a place where potential gas hazard exists. It shows not only the concentration of protentional gas, but also diagnostic the result of the unit itself through the large digital LCD display. Allows a user to connect to the controller with a standard 4-20mA analog output communication or RS-485 digital communication. Aluminum and stainless-steel enclosure gives an excellent RFI and EMC compatibility.

Product Specifications

Model Name	SI-100
Detected Gas	Combustible Gas		Toxic Gas	Oxygen
Detection Principle	Catalytic	IR	Electrochemical Cell	Galvanic
Sensor Life	> 5 years	> 2 years	> 2 years	< 2 years
Response Time	<15 sec / 90% scale	<30 sec / 90% scale		<15 sec / 90% scale
Resolution	1%LEL	1%LEL		0.1%VOL
Detection Type	Diffusion Type
Accuracy	±3% Full Scale
Operating Voltage	18~32Vdc
Power Consumption	2.8W @ 24Vdc
Indicators	FND, Gas Concentration, Alarm, Device Fault
Relay Output	1st Alarm, 2nd Alarm, Fault Alarm (Rated 5.0A @30Vdc)
Analog Output	4~20mA (HART: Optional)
Digital Communication	RS-485
Remote Interface	RS-485 Modbus, HART (Optional)
Input & Setting	Non-Intrusive with Magnetic Wand & RS-485 (Optional)
Wiring	4~20mA / DC / Relay: Max 20 AWG
Operating Temperature	-20℃ ~ +55℃
Operating Humidity	5% ~ 95% RH (Non-condensing)
Conduit Size	3/4” NPT × 2EA
Device Warranty	2 Years
Sensor Warranty	1 Year
Material	Transmitter: Aluminum, Sensor Housing: Stainless Steel (SS316)
Dimensions	150(W) x 165(H) x 110(D) mm
Weight	Approx. 1.9kg
Explosion-proof Certification	KCs: Ex d IIC T5 IECEx: Ex d IIC T5 INMETRO: Ex db IIC T5 Gb

Sensor Specifications

Gas	Sensor	Range	Low Alarm	High Alarm	Resolution
O₂	Electrochemical	0~30%vol	19.0%vol	23.0%vol	0.1%vol
CO	Electrochemical	0~500ppm	30ppm	60ppm	1ppm
SO₂	Electrochemical	0~20ppm	2ppm	5ppm	0.1ppm
H₂	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
H₂	Electrochemical	0~1,000ppm	100ppm	500ppm	5ppm
H₂S	Electrochemical	0~500ppm	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
NH₃	Electrochemical	0~100ppm	25ppm	35ppm	1ppm
C₂H₂	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
C₂H₄O	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
C₆H₆	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
C₇H₈	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
CH₄	IR	0~100%LEL	15%LEL	50%LEL	1%LEL
CH₄	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
Cl₂	Electrochemical	0~5ppm	0.5ppm	1.0ppm	0.1ppm
Cl₂	Electrochemical	0~20ppm	0.5ppm	1.0ppm	0.1ppm
CO₂	IR	0~2,000ppm	1,000ppm	1,500ppm	3ppm
CO₂	IR	0~5,000ppm	3,000ppm	5,000ppm	8ppm
CO₂	IR	0~5%vol	0.5%vol	3%vol	0.1%vol
HCl	Electrochemical	0~10ppm	1ppm	2ppm	0.1ppm
VOC	PID	0~1,000ppm	50ppm	100ppm	with in 3ppm
C₈H₁₀	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
H₂O₂	Electrochemical	0~10ppm	1ppm	2ppm	0.1ppm
NO₂	Electrochemical	0~20ppm	3ppm	5ppm	0.1ppm
C₂H₄O	Electrochemical	0~30ppm	1ppm	2ppm	0.1ppm
C₂H₂	Catalytic	0~100%LEL	15%LEL	50%LEL	1%LEL
NO	Electrochemical	0~100ppm	25ppm	50ppm	1ppm
HF	Electrochemical	0~5ppm	0.5ppm	1ppm	0.1ppm

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SI-100

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