The Gastec H2S603E Hydrogen Sulphide Sensor represents the pinnacle of electrochemical gas sensing technology. By employing the controlled potential electrolysis method, the sensor achieves exceptional selectivity for Hydrogen Sulphide ($H_{2}S$). This process works by maintaining a constant electrochemical potential at the working electrode, allowing for the precise oxidation of target gas molecules, which results in a highly linear and reliable electrical output.
The Gastec H2S603E Hydrogen Sulphide Sensor is an ultra-compact, professional-grade sensing component engineered for the high-precision detection of $H_{2}S$. Utilizing advanced controlled potential electrolysis technology, this sensor provides critical accuracy for safety monitoring systems where detecting even trace amounts of toxic gas is vital.
Although, technology is always evolving, one demand on our products never changes: the demand for customer safety. Whenever we contribute to customer safety, we are presented with an opportunity to develop further.
GASTEC holds this corporate creed of safety and development in high esteem, as it strives to grow while always putting customer safety first.
| Parameter | Specification |
| Model Number | H2S-603E |
| Variant Model | GOMHC-3A |
| Detection Technology | Controlled potential electrolysis sensor |
| Target Gas | Hydrogen Sulphide ($H_{2}S$) |
| Dimensions | 33 x 30 x 36 mm |
| Weight | 17g |
| Pin Configuration | 4-pin layout for PCB mounting |
Because the H2S-603E is an electrochemical sensor, it is a consumable part with a finite lifespan (typically 2 years).
Technical Note: If your GOMHC-3A monitor displays a sensor error or fails to respond during a “bump test,” the H2S-603E likely needs replacement. After installing a new sensor, always perform a full span calibration with certified $H_2S$ gas to ensure the device is reading accurately.
The Gastec H2S603E Hydrogen Sulphide Sensor is optimized for use in the following technical environments:
