MPS™ Extended Range Low-Power Methane Gas Sensor
MPS™ Extended Range Methane Gas Sensor
Overview
NevadaNano’s MPS™ Extended Range Methane Gas Sensor is designed and optimized for open-air detection of methane and natural gas plumes over a full range of concentrations, from 50 to 1,000,000 ppm. In field testing, the sensor has detected methane emitted at a rate of 2 standard cubic feet per hour (SCFH) at distances up to 10 meters with nominal false positive readings over weeks of outdoor operation.
The smart sensor is intrinsically safe, robust, and extremely poison-resistant. It has built-in environmental compensation and performs constant self-testing for fail-safe operation. Sensor readings are output on a standard digital bus— no added electronics are required. With no field calibration required, the MPS Extended Range Methane Gas Sensor delivers industry-leading performance and a low cost of ownership.
Note: the MPS Extended Range Methane Gas Sensor is not suited for safety applications or for detection of gradually
accumulating concentrations (e.g. slow leaks into confined, poorly ventilated spaces).
Features
- Built-in environmental compensation
- Inherently poison resistant
- No calibration required
- Supports 15+ year lifetimes
- Low power — 15 mW average
- Intrinsically safe (IS) certified
- Built-in self-test for fail-safe operation
Gas Classification
The old way: Conventional sensing technologies (e.g. catalytic bead, NDIR) use a “k-factor” multiplier to convert raw sensor signals to gas concentrations in % LEL. These “k-factors” are based on known relative sensitivities of these sensors to different gases. A single “k-factor”, corresponding to a particular gas, must be selected manually during system setup; if the sensor is then exposed to a gas other than the one selected, significant errors in reported concentration can occur.
The MPS™ way: The MPS™ Flammable Gas Sensor applies a real-time conversion factor automatically, using the latest measured thermal properties of the ambient air/gas and the environmental conditions. The %LEL values reported for the bulk, which may contain a mixture of gases, achieves the same high levels of accuracy achieved with single gases.
