The Analox MEC family is one of the world’s most extensive ranges of toxic gas OEM sensors with digital output capability.
The Analox MEC (Mini Electrochemical) is a compact, rugged sensor module available in multiple gas variants. All versions are housed in an IP65-rated enclosure and share the same physical dimensions, power requirements, and communication protocol.
MEC O2 Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 100% (atmospheric pressure), 0 to 3000 mbar (hyperbaric) |
| Temperature range | −5 to 55 °C (23 to 131 °F) |
| Accuracy (over ±10 °C) | ±(0.035% O2 + 1% of reading + temperature coefficient), temperature coefficient = 0.4% of reading/°C or 0.22% of reading/ °F |
| Detection mode | electrochemical |
| Sensor Life | 2 years for the electrochemical cell in atmospheric air |
| Supply voltage | 5.0 V DC (±0.5 V) |
MEC CO Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 20 ppm |
| Temperature range | −5 to 55 °C (23 to 131 °F) |
| Accuracy (over ±10 °C) | ±(1 ppm CO + 5% of reading + temperature coefficient), temperature coefficient = 0.1 ppm CO/°C + 0.5% of reading/°C or 0.056ppm CO/°F + 0.278% of reading/°F |
| Detection mode | electrochemical |
| Sensor Life | 2 years in operation |
| Supply voltage | 5.0 V DC (±0.5 V) |
MEC He Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 100% |
| Temperature range | −5 to 55 °C (23 to 131 °F) |
| Accuracy (over ±10 °C) | ±(2% FS + temperature coefficient), temperature coefficient = 0.05% FS/°C or 0.028% FS/°F |
| Detection mode | pellistor |
| Sensor Life | up to 5 years |
| Supply voltage | 5.0 V DC (±0.1 V) |
VOC Sensor
| Feature | Specification |
|---|---|
| Range | 0 to 100 ppm |
| Temperature range | −5 to 55 °C (23 to 131 °F) |
| Accuracy (over ±10 °C) | ±(1 ppm VOC + 5% of reading + 0.25% of reading °C) |
| Detection mode | Analox MEC intelligent PID sensor |
| Sensor Life | 5,000 hours (~6 months), Cell - 50,000 hours (~5 years) |
| Supply voltage | 5.0 V DC (±0.5 V) |
The Analox MEC Oxygen (O₂) Sensor is based on the proven 9212 range of electrochemical oxygen sensors.
The sensor operates using the principle of electrochemical galvanic action, generating an electrical current proportional to the amount of oxygen passing through a Teflon membrane. The partial pressure of oxygen present directly affects the absorption rate.
The sensor output is highly resistant to cross-interference, as the membrane and oxygen partial pressure are largely unaffected by most other gases.
Both the 9212 series sensor and the MEC Oxygen (O₂) Sensor itself are field replaceable, helping provide long operating life and cost-effective oxygen monitoring.
The Analox MEC CO sensor uses electrochemical sensing technology for carbon monoxide monitoring.
With field-replaceable cells and long sensor life, the MEC CO provides a highly cost-effective solution for continuous CO monitoring.
Integration into larger gas management systems is simplified through a digital serial communications interface.
Breathing pure helium (He) can cause asphyxiation within minutes. Inhaling helium from a pressurized cylinder can also cause gas embolisms, where gas bubbles become trapped in blood vessels, potentially leading to vessel rupture and hemorrhage.
The Analox MEC He sensor is ideal for integration into breathing air compressors and gas systems. The sensors are compact, highly accurate, and designed for long operating life.
Volatile Organic Compounds (VOCs) are organic compounds with an initial boiling point less than or equal to 250°C at standard atmospheric pressure (101.3 kPa). VOC exposure can affect air quality and may damage visual or respiratory health.
Common VOC sources include:
Along with airborne particulates, VOCs are considered major contributors to poor indoor and outdoor air quality. Many VOCs are also believed to be carcinogenic at high concentrations or with prolonged exposure.
Analox understands that many customers prefer to integrate sensors into their own systems rather than purchase a complete monitoring solution. The MEC sensor range was designed specifically for this purpose.
The MEC range is ideal where digital inputs are required. Compact enough to be integrated almost anywhere, each sensor housing includes a gas port and can be installed in series within a gas path using a simple flow adapter.
An integral pressure sensor compensates for atmospheric pressure effects where appropriate, while the MEC design also allows easy replacement of sensor cells.
Analox also uses MEC digital sensors within its own products, including the ACG+.
Note: For monitoring sub-ppm gas levels, the TEC range is also available.
