Sensor Types
Blackline cartridges support a range of sensors for detecting toxic, combustible, and atmospheric gases. Each sensor type uses a detection method suited to specific gas characteristics and environments. Devices can support up to four sensors per cartridge, or up to five gases when a dual sensor (such as COSH) is installed.
| Sensor Type | Description |
|---|---|
| Electrochemical |
Detects gases such as carbon monoxide (CO), hydrogen sulfide (H₂S), ammonia (NH₃), sulfur dioxide (SO₂), and oxygen (O₂). These sensors are compact and well-suited for toxic-gas detection and personal monitoring. |
|
NDIR (Non-Dispersive Infrared) |
Detects gases like carbon dioxide (CO₂) and hydrocarbons (LEL-IR), especially in environments with low or no oxygen. These sensors do not require oxygen to function and are resistant to sensor poisoning. |
|
MPS (Molecular Property Spectrometer) |
A solid-state LEL sensor that uses molecular property classification to detect combustible gases. MPS sensors must be zeroed in clean air at startup and are not suitable for low-oxygen environments (<18% O₂). |
| PID (Photoionization Detector) | Detects volatile organic compounds (VOCs) using ionization. |
| Dual sensor (Electrochemical) |
Combines two gas detection elements in one sensor, such as the COSH sensor (CO + H₂S), allowing the device to monitor five gases using four sensor slots. Note: The dual sensor is not supported on EXO when the gas expansion module is used |