MPS™ 4.0 Flammable Gas Sensor
Detects flammable gas during start-up. Rapid detection and precise quantification of over a dozen gases and gas mixtures, all with factory-calibrated accuracy.
IMPORTANT NOTICE
MPS™ 4.0 sensors will cease production at the end of 2026.
We recommend evaluating the MPS™ 5.0 flammable gas sensor.
Detects flammable gas during start-up
The MPS 4.0 Flammable Gas Sensor detects over a dozen of the most common combustible gases, including Hydrogen and begins checking for gas 104 seconds after power on with a fast response time (T90) <20 seconds.
No-maintenance features = low total cost of ownership
- Automatic multi-gas accuracy in real-time
- 15-year sensor life
- No field calibration required for the life of the sensor
- Low power — 29 mW average
- Built-in environmental compensation
- Built-in self-test for fail-safe operation
- Immune to poisoning and saturation
- Certified Intrinsically Safe (S4 format)
TrueLEL™ multi-gas detection
NevadaNano’s Molecular Property Spectrometer™ (MPS™) Flammable Gas sensor is powering the next generation of combustible gas detection. The MPS™ delivers unprecedented reliability, accuracy, and worker safety by simultaneously detecting over a dozen of the most common combustible gases, including Hydrogen. We call this TrueLEL™. No other sensor can accurately report 0-100% LEL across multiple gases with just one factory calibration, the MPS™ never requires field calibration.
| Gas* | Formula | Detection Range | Accuracy (0-50%LEL) |
|---|---|---|---|
| Butane | C4H10 | 0-100 %LEL | ±5 %LEL |
| Ethane | C2H6 | 0-100 %LEL | ±5 %LEL |
| Hydrogen | H2 | 0-100 %LEL | ±5 %LEL |
| Isobutane | HC(CH3)3 | 0-100 %LEL | ±5 %LEL |
| Isobutylene | C4H8 | 0-100 %LEL | ±5 %LEL |
| Isopropanol | C3H8O | 0-100 %LEL | ±10 %LEL |
| Methane | CH4 | 0-100 %LEL | ±3 %LEL |
| Methyl Ethyl Ketone | C4H8O | 0-100 %LEL | ±5 %LEL |
| Octane | C8H18 | 0-100 %LEL | ±12 %LEL |
| Pentane | C5H12 | 0-100 %LEL | ±7 %LEL |
| Propane | C3H8 | 0-100 %LEL | ±7 %LEL |
| Propylene | C3H6 | 0-100 %LEL | ±5 %LEL |
| Toluene | C7H8 | 0-100 %LEL | ±12 %LEL |
| Xylene | C8H10 | 0-100 %LEL | ±12 %LEL |
*Other gases are detected but they are not TrueLEL™
Highly robust and built-in self test features
The MPS™ sensor has a very wide operating range of -40°C to 75°C with up to 100% relative humidity It has built-in environmental compensation and automatic self-testing that continuously evaluates the system to ensure it is operating to specification. The sensor is certified for all flammable gas environments with ATEX, UL and IECEx certifications.
The MPS™ 4.0 Flammable Gas Sensor comes in two different formats: The S4 (3-pin and 5-pin options) and the Mini. The S4 is intrinsically safe for certified applications, and the cost-effective Mini targets a variety of applications. Sensor readings are output on either a UART digital bus that provides gas classification or analog output for pellistor replacement with improved performance.
Specifications
| S4 Dimensions | 16.6 mm (H) x 20.0 mm (D) |
| S4 Mass | 8.0 ± 0.5 grams |
| Mini Dimensions | 25.3 mm (H) x 27.3 mm (D) |
| Mini Mass | 4.3 ± 0.5 grams |
| Body material | Ultem PEI |
| Cycle Time | 2 seconds |
| UART Output Option | Yes |
| Analog Output Option | Yes |
| Autostart Available | Yes |
| Power Consumption | 29 mW |
| Supply Voltage | 3.3 - 5.0 ±5% VDC |
| Target Gases | Flammable Gases |
| Detectible Ranges | 0-100 %LEL ISO/IEC |
| Start Up Environment | Air |
| Can be operated in inert environments | No |
| Detects flammable gas during start up | Yes |
MPS 4.0 Flammable Gas Sensor Downloads
| S4 Sensor Datasheet | Download |
| Mini Sensor Datasheet | Download |
| User Manual | Download |
| Firmware Release Notes | Download |
| Bump Test Gas Concentrations | Download |
| CSA Readiness Report | Download |
| CSA and IEC Readiness Report | Download |
| Sand and Dust Reliability Report | Download |
| Sensor Performance Comparison Report | Download |
| Measuring Flammable Gas Mixtures with the MPS™ | Download |
Testing and Evaluation Resources
| Order an MPS™ Gas Sensor Evaluation Kit | Details |
| Evaluation Unit Demo Video | Watch video |
| MPS™ Gas Sensor Interface Installer (.zip) | Download |
| MPS™ Gas Sensor Interface Application Readme (pdf) | View |
| MPS™ Flammable Gas Sensor Evaluation Unit User Manual (pdf) | View |
| MPS™ A2L Refrigerant Gas Sensor Evaluation Unit User Manual (pdf) | View |
| Sample Code (.tar) | Download |
| Sensor Testing Without the Evaluation Unit (pdf) | View |
| Remote Connection of the MPS™ Family of Sensors | View |
| MPS™ Hazardous Locations User Guide (pdf) | View |
| MPS™ S4 Solid Model (.STEP file) | Download |
| MPS™ Mini Solid Model (.STEP File) | Download |
Certificates of Compliance
| SOC 2 Type 1 Report | Request » |
| FM Certificate of Conformity, United States, FM19US0145U (pdf) | View |
| FM Certificate of Conformity, Canada, FM19CA0077U (pdf) | View |
| ATEX Certificate, FMATEX0184U (pdf) | View |
| IECEx Certificate of Conformity, FMG 19.0028U (pdf) | View |
| IECEx Quality Assessment Report Summary, GB/FME/QAR.19.0020/08 (pdf) | View |
| S4 Quality Assurance Notification (ATEX), FM19ATEXQ0200 (pdf) | View |
| ISO 9001-2015 Certificate, NSAI, 19.8213 (pdf) | View |
| CSA Functional Safety Certificate, EN 50271:2018 (pdf) | View |
The MPS™ Sensor Family
| Feature |
MPS™ 3.0 View Details |
MPS™ 4.0* View Details |
MPS™ 5.0 View Details |
MPS™ 6.0 ULP View Details |
|---|---|---|---|---|
| No required field calibration | ||||
| Immune to poisoning | ||||
| Immune to saturation | ||||
| TrueLEL™ multi-gas detection | ||||
| 15-year sensor life | ||||
| Power-On-Self-Test (POST) | ||||
| Built-In-Self-Test (BIST) | ||||
| UART Digital Output | ||||
| Analog Data Output | ||||
| Detects flammable gas during start-up | ||||
| 60079-29-1 Ed. 2.1 Annex A compliant | ||||
| Certified to EN 50271 | ||||
| Includes watchdog timer | ||||
| Power consumption | 29mW | 29mW | 27.3 mW | 1.35mW |
| Supply voltage | 3.3 - 5.0 ±5% VDC | 3.3 - 5.0 ±5% VDC | 3.0 - 5.0 ±5% VDC | 3.0 - 5.0 ±5% VDC |
* MPS™ 4.0 sensors will cease production at the end of 2026.