Posted in | Gas Sensors

Detecting Over 50 Gases with the Meridian Universal Gas Detector

The Meridian universal gas detector uses a single detector head to accommodate different types of sensors, whether users need electrochemical sensor for toxic environments, or a catalytic or infrared sensor for detection of combustible gases.

Users can simply fix the specific combustible or toxic sensor to the universal detector head, and the Meridian gas detector will automatically measure the type of gas that needs to be detected.

The sensor can be installed in an easy plug-and-play manner. The Meridian gas detector is designed to be future proof and at the same time maintain ease of use.

Single Set of Accessories

The Meridian gas detection platform is equipped with a single set of accessories to meet specific application needs. As these accessories are designed for the universal detector head, there is no need to procure additional accessories for combustible and toxic applications.

The following accessories are provided for the meridian transmitter:

  • Sensor simulator: A handy commissioning and troubleshooting tool to locally simulate gas concentration and stimulate a response from the detector.
  • Calibration adapter: Can be easily fixed to the sensor housing to deliver calibration gases to the detector head.
  • Flow cell: Enables users to bring a gas sample to the sensor.
  • Deluge guard: Protects the sensor from heavy rain as well as water spray from plant wash down routines.
  • Universal mounting kit: Thanks to predefined cut outs, users can easily substitute older gas detectors with the Meridian detector, making it a suitable option for retrofit applications.
  • Duct mount kit: Enables users to remotely mount sensors onto ventilation ducts for verification.
  • Sun shield: Deflects direct sunlight from the Meridian reducing glare on the display, and even helps to reduce the transmitter’s internal temperature.

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Global Certifications and Approvals

The Meridian gas detector has been certified using the highest international standards for worldwide use. The instrument will have the required approvals needed for use across different regions, whether users purchase the instrument for use on an FPSO in Latin America, in a chemical plant in North America, or in an oil refinery in Asia or Europe.

The Meridian gas detector is not a set of gas detectors, unlike industry standard offerings. Each instrument is certified for use in a multiple regions.

Safety Integrity Level

The Meridian universal gas detector is designed keeping safety and reliability in mind, and hence, it is suitable for use in SIL-2 rated systems under the IEC 61508 standards, certified by TUV-Rheinland.

The third party SIL certification verifies that the product meets the most stringent standards for performance and reliability, and validates its ability to reduce potential downtime and improve safety factor.

Sensor Replacement without Declassifying The Area

The intrinsically safe, plug-and-play sensor design of the Meridian gas detector enables users to carry out sensor replacements without having to power down the instrument. Users do not have to declassify an area during the replacement of the sensor. As a result, plant production uptime is maintained, and a safe working environment is also ensured for workers.

Toxic Sensors Offer Range Invariant Calibration

While sensor calibration is very important, it is a complex and time-consuming intensive process. In order to help customers reduce maintenance cost and operational hazard has developed an advanced toxic sensor technology that is range agnostic and linear throughout. With the Meridian gas platform, users can calibrate a toxic sensor to a specific gas level and can make the required adjustments to the range without any need to re-calibrate the sensor to the new range.

For instance, in order to improve maintenance workload, users can calibrate sensors in a batch in the lab before setting them to a default range. Once installation is complete, the range of the sensors can be altered to suit the needs of the particular location. The sensor can be readjusted to the set of pre-defined ranges. In addition, the sensor design offers flexibility when calibrating sensors where a certain gas range cannot be accessed or is not available. In such cases, users can simply calibrate the sensor with an available surrogate gas range and readjust the range in the sensor to the set of predefined ranges available for that specific sensor.

Automatic Sensor Voltage Detection and Adjustment

In an effort to reduce commissioning and installation time, the Meridian universal gas detector is designed to detect current voltage and make the necessary voltage alterations for catalytic bead sensors without any intervention from the installer. This not only cuts down installation time, but also reduces the required tooling expertise required for sensor installation.

Full-Range Detection

The Meridian universal gas detector can detect a complete range of toxic and combustible gases. Up to three sensors can be joined to a single instrument. The multi-sensor detector can be used to:

  • Monitor combustible and toxic gases from the same detector
  • Precisely detect gases that are difficult to detect due to cross interference from other gases
  • Reduce overall cost per point of detection and at the same time increase overall safety
  • Remotely mount sensors up to 100 feet from the gas detector to meet specific application needs

The Rock Solid Advantage: More Reliable, Accurate Detection

  • Digital ID: Offers automatic recognition during sensor replacement, reducing the chance of user error during maintenance in the field.
  • Minimal drift: Performs consistently in real-world environments by reducing humidity and temperature effects.
  • Wider toxic gas detection: A number of ranges are available for each gas so to optimize the response of the sensor in the environment.
  • High specificity: Enables much lower interference from other gases than traditional gas sensors. As a result, cross interference from other gases are is reduced and this, in turn, reduces the chance of a false alarm.

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