MPS™ True LEL™ Explosives Gas Sensor Downloads

MPS™ Flammable Gas Sensor Brochure:

Next Generation Combustible Gas Sensor Delivering TrueLEL™

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.

With its robust industrial design, the MPS doesn’t drift, decay, or poison and requires no maintenance over its lifetime. And with its data-rich reporting capabilities, the MPS will instantly let you know if a fault exists and why.

MPS sensor
gas sensor

The MPS™ Flammable Gas sensors accuracy is enhanced by integrated, real-time measurements and built-in compensation for temperature, pressure, and humidity. Gas concentration readings are accurate across the full environmental range including rapid environmental transients, delivering best-in class accuracy.


The MPS™ Flammable Gas sensor is certified intrinsically safe and inherently immune to poisons. The MPS™ comes in two different packaging options. The S4 is intrinsically safe for certified applications, and the cost-effective Mini Flammable targets a variety of applications. Sensor readings are output on a UART digital bus providing industry first gas classification or industry standard analog output for easy integration and improved performance into existing designs.

Legacy flammable gas detection products cannot promise the same combination of accurate and reliable detection of multiple gases across the full environmental range.

MPS™ Flammable Gas Sensor Datasheet:

Overview

NevadaNano’s MPS™ Flammable Gas Sensor is the next generation of gas detection and quantification for worker safety and leak detection in drilling, transportation, and production of oil & gas and chemical products. The smart sensor quickly detects and accurately quantifies over a dozen gases and gas mixtures using a standard factory calibration. It has built-in environmental compensation and automatic self-testing for fail-safe operation. It is intrinsically safe, robust, and extremely poison resistant. Sensor readings are output on a digital bus or configurable analog output – no added electronics are required. With no field calibration required, the MPS™ Flammable Gas Sensor delivers industry-leading performance and a low cost of ownership.

Features

gas sensor
MPS S4 Flammable Sensor ATEX - FM

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.

MPS K factor Gas Classification

MPS™ Flammable Gas Sensor User Manual:

How the MPS™ Flammable Gas Sensor Works

The MPS™ Flammable Gas Sensor is a smart sensor with built-in environmental compensation that detects and accurately quantifies over a dozen gases as well as gas mixtures. It is intrinsically safe, robust, extremely poison-resistant, and calibrated for all gases by performing only a single calibration with methane. Sensor readings are output on a standard digital bus or industry-standard analog output. The MPS™ transducer is a micro-machined membrane with an embedded Joule heater and resistance thermometer. The MEMS transducer is mounted on a PCB and packaged inside a filtered enclosure that is permeable to ambient air. Presence of a flammable gas causes changes in the thermodynamic
properties of the air/gas mixture. These properties are measured by the transducer and processed by patent algorithms to report an accurate concentration and to classify the flammable gas.

Other sensing technologies (e.g. catalytic bead, NDIR) require 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 occur.

In contrast, 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.

MPS™ Flammable Gas Sensor Evaluation Unit User Manual:

System Overview

The Molecular Property Spectrometer™ (MPS™) Flammable Gas Sensor Evaluation Unit is a user-friendly sensor system developed for assessing flammable gas detection performance. The evaluation system is shown in Figure 1. The sensor is 20.0 ø x 16.6 mm with 1.52 mm diameter connector pins and connects to a provided evaluation PCB for communication with a PC (USB) or breakout to individual sensor signals (optional 5-wire harness). The sensor contains the MPS sensing element, environmental sensor, microprocessor, and supporting electronics. A quarter-turn plastic gas mask and housing is included to provide a sealed headspace above the sensor for test gas delivery.

Evaluation Kit Contents

  • MPS™ Sensor Interface Software and Drivers
  • Evaluation PCB + housing
  • Gas delivery mask with integrated barbs
  • USB A-to-micro-B cable
  • 1/4” Tygon tubing (McMaster: 6516T17)
  • Micro USB plug (not shown–optional)
  • MPS™ S4 Flammable Gas Sensor (sold separately)
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