SI-100C

Explosion-proof Fixed Gas Detector

DESCRIPTION

The SI-100C is a fixed gas detector designed for continuous monitoring of oxygen, toxic gases, and combustible gases in areas where potential gas hazards may occur. Featuring a compact, LCD-less design, the SI-100C focuses on stable signal transmission and reliable performance, making it ideal for integration with centralized gas detection systems. Equipped with a standard 4–20 mA analog output, it can be easily connected to controllers or monitoring panels for real-time gas concentration monitoring. Its explosion-proof and water-/dust-proof construction ensures dependable operation in harsh industrial environments, including chemical plants, refineries, and various industrial facilities. The detector supports diffusion-type sensing and a wide range of sensor technologies, including catalytic, infrared (IR), electrochemical, and galvanic sensors, allowing flexible configuration for different gases and applications. A built-in calibration mode and optional console support simplify maintenance and calibration, helping maintain long-term measurement accuracy and overall system reliability.

KEY FEATURES

- Explosion-proof Design: Certified explosion-proof structure suitable for hazardous industrial environments.
- Robust IP Protection: Water- and dust-resistant housing ensures stable operation in harsh conditions.
- 4–20 mA Analog Output: Standard analog output enables seamless integration with controllers and monitoring systems.
- Flexible Sensor Technologies: Supports Catalytic, Infrared (IR), Electrochemical, and Galvanic sensors for combustible, toxic, and oxygen gases.
- Diffusion-Type Detection: Provides stable and reliable gas monitoring without the need for an internal pump.
- Built-in Calibration Mode: Allows easy zero and span calibration via control switch for simplified maintenance.
- Two-Wire / Three-Wire Configuration: 3-wire connection for combustible gases and 2-wire configuration for toxic and oxygen gases.
- Wide Operating Range: Operates reliably from -20°C to +55°C in demanding industrial environments.

Model	SI-100C
Measuring Gas	Combustible Gas	Combustible Gas	Toxic Gas	Oxygen
Measuring Method	Catalytic	IR	Electrochemical Cell	Galvanic
Measuring Range	0~100% LEL	0~100% LEL	*Depends on sensor	0~30% Vol
Sensor Life Time	> 2 years	> 5 years	> 2 years	> 2 years
Response Time	< 10 sec / 90% scale	< 30 sec / 90% scale	*Depends on sensor	< 15 sec / 90% scale
Resolution	1% LEL	1% LEL	*Depends on sensor	0.1% Vol
Cable / Distance	Single cable: 3-wire > CVVSB 1.5sq or AWG20	Power + Signal cable: 2-wire > CVVSB 1.5sq or AWG20
Type	Diffusion Type
Accuracy	±3% / Full scale
Parameter	Control Switch (Calibration), Admin Console (Maintenance, Option)
Operation Mode Display	2-LED (Operating and Zero Cal, Span Cal. LED)
Output Signal	4-20mA DC (3 Wire for combustible gas, 2 wire for other gas)
Conduit Connection	NPT 3/4" (2way)
Mounting Type	Wall mount
Setting	1 Switch Interface (Calibration), Console set available (Option)
Remote Set	via Console (Zero Calibration, Span Calibration, Calibration Gas Concentration Set, Factory default, 4-20mA Calibration, Range Set, Data Logging)
Operating Temperature	-20°C ~ +55°C
Operating Humidity	5% ~ 95% RH (Non-condensing)
Operating Power	9~34Vdc 600mA
Material	Aluminium, Stainless steel (STS304)
Dimension	102(W) x 137(H) x 87(D) mm
Weight	1.0kg
Option	Console
Certification	IECEx: Ex db IIC T5 Gb
ATEX: II 2 G Ex db IIC T5 Gb
INMETRO: Ex db IIC T5 Gb IP65

Model

SI-100C

Measuring Gas

Combustible Gas

Toxic Gas

Oxygen

Measuring Method

Catalytic

Electrochemical Cell

Galvanic

Measuring Range

0~100% LEL

*Depends on sensor

0~30% Vol

Sensor Life Time

> 2 years

> 5 years

> 2 years

Response Time

< 10 sec / 90% scale

< 30 sec / 90% scale

*Depends on sensor

< 15 sec / 90% scale

Resolution

1% LEL

*Depends on sensor

0.1% Vol

Cable / Distance

Single cable: 3-wire > CVVSB 1.5sq or AWG20

Power + Signal cable: 2-wire > CVVSB 1.5sq or AWG20

Type

Diffusion Type

Accuracy

±3% / Full scale

Parameter

Control Switch (Calibration), Admin Console (Maintenance, Option)

Operation Mode Display

2-LED (Operating and Zero Cal, Span Cal. LED)

Output Signal

4-20mA DC (3 Wire for combustible gas, 2 wire for other gas)

Conduit Connection

NPT 3/4" (2way)

Mounting Type

Wall mount

Setting

1 Switch Interface (Calibration), Console set available (Option)

Remote Set

via Console (Zero Calibration, Span Calibration, Calibration Gas Concentration Set, Factory default, 4-20mA Calibration, Range Set, Data Logging)

Operating Temperature

-20°C ~ +55°C

Operating Humidity

5% ~ 95% RH (Non-condensing)

Operating Power

9~34Vdc 600mA

Material

Aluminium, Stainless steel (STS304)

Dimension

102(W) x 137(H) x 87(D) mm

Weight

1.0kg

Option

Console

Certification

IECEx: Ex db IIC T5 Gb

ATEX: II 2 G Ex db IIC T5 Gb

INMETRO: Ex db IIC T5 Gb IP65

PRODUCTS

Product

SI-100C

SI-100C

Explosion-proof Fixed Gas Detector

DESCRIPTION

KEY FEATURES

Product Specifications

Sensor Specifications

Accessories

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