SB-4CH3SH-5 (CH₃SH)

Electrochemical Methyl Mercaptan (CH₃SH) Sensor (0–5 ppm)

Product Description

The SB-4CH3SH-5 is an electrochemical gas sensor designed for high-precision detection of methyl mercaptan (CH₃SH) within the range of 0 to 5 ppm. With higher sensitivity than comparable sensors, it enables more accurate and reliable measurements. Suitable for both portable and fixed gas detection devices, the sensor offers linear output characteristics and excellent stability.

Featuring a fast T90 response time of less than 30 seconds, the sensor provides reliable CH₃SH monitoring across a wide range of industrial applications. It operates stably over a temperature range of -20℃ to +50℃ and delivers an expected operating life of more than 24 months in ambient air.

Key Features

- Measurement range: 0–5 ppm
- Sensitivity: 2000 ± 700 nA / ppm
- Fast response time: T90 < 30 sec
- Resolution: < 0.1 ppm
- Operating life: ≥ 24 months in air
- Operating temperature range: -20℃ to +50℃
- Higher sensitivity for more precise measurement compared to conventional sensors

Performance Characteristics
Output Signal	2000 ± 700 nA / ppm
Typical Baseline Range (pure air, @ 20℃)	< ±0.2 ppm CH₃SH equivalent
Response Time (T90)	< 30 seconds
Measurement Range	0–5 ppm
Maximum Overload	10 ppm
Linearity	Linear
Repeatability	< ±5% of signal
Recommended Load Resistor	10 ohms
Resolution (Electronics Dependent)	< 0.1 ppm typical
Bias Voltage	Not required
Environmental
Temperature Range Continuous	-20℃ to +50℃
Pressure Range	800 to 1200 mbar
Operating Humidity Range	15% to 90% RH
Lifetime
Long Term Output Drift	< 5% per annum
Recommended Storage Temp	0℃ to 20℃
Expected Operating Life	> 24 months in air
Standard Warranty	24 months from date of dispatch
Intrinsic Safety Data
Maximum at 10 ppm	20 µA
Maximum o/c Voltage	< 1.0 V
Maximum s/c Current	< 0.1 A

Performance Characteristics

Output Signal

2000 ± 700 nA / ppm

Typical Baseline Range (pure air, @ 20℃)

< ±0.2 ppm CH₃SH equivalent

Response Time (T90)

< 30 seconds

Measurement Range

0–5 ppm

Maximum Overload

10 ppm

Linearity

Linear

Repeatability

< ±5% of signal

Recommended Load Resistor

10 ohms

Resolution (Electronics Dependent)

< 0.1 ppm typical

Bias Voltage

Not required

Environmental

Temperature Range Continuous

-20℃ to +50℃

Pressure Range

800 to 1200 mbar

Operating Humidity Range

15% to 90% RH

Lifetime

Long Term Output Drift

< 5% per annum

Recommended Storage Temp

0℃ to 20℃

Expected Operating Life

> 24 months in air

Standard Warranty

24 months from date of dispatch

Intrinsic Safety Data

Maximum at 10 ppm

20 µA

Maximum o/c Voltage

< 1.0 V

Maximum s/c Current

< 0.1 A

PRODUCTS

Product

SB-4CH3SH-5 (CH3SH)

SB-4CH3SH-5 (CH₃SH)

Electrochemical Methyl Mercaptan (CH₃SH) Sensor (0–5 ppm)

Product Description

Key Features

Product Specifications

Sensor Specifications

Accessories

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