gasQS™ static

Screw in, connect, start measuring – The most compact and fastest of our measuring devices determines various properties of binary and virtually binary gas mixtures.

gasQS static

The gasQS static precisely determines heat conductivity using a microthermal sensor. For binary gas mixtures (e.g. biogas), it can derive the percentage of the gases as well as calculate various gas properties such as calorific value and density with high accuracy.

  • Simple integration into the control system
  • Only minimal interventions into the pipe system and no exhaust line required

icons_mems_20-06
High sensitivity
icons_mems_20-06
Fast measurement
icons_mems_20-06
Simple commissioning
icons_mems_20-06
No moving parts
icons_mems_20-06
Wide pressure range

APPLICATION AREAS

Burners

Elektronik

Our gasQS measuring device offers various uses in gas burner applications: regulation of the fuel entry, measurement of key figures and optimization of the combustion processes.

Biogas plants

FW & SW

Biogas plants are becoming more  important for energy generation. With our measuring device, the processes can be controlled and monitored and the CH4 content in the gas can be measured.

P2G & methanation

Our measuring device is ideal for the regulation and monitoring of methanation processes. Additionally, it can be used to determine the purity of hydrogen.

Fuel cells

FW & SW

Whether for automatic fuel and air feed regulation, increasing effectiveness or extending lifespan - the gasQS technology leads to increased efficiency.

SPECIFICATIONS

For the specifications, select the corresponding standard version below. Should the specifications not be suitable for your application, contact us.

Binary gas mixtures

A binary gas mixture (BG) is a mixture of two components such as methane and carbon dioxide. These are often found in applications with biogas plants.

Measurement range

Binary gas mixtures, e.g. biogas

Accuracy

Proportion determination

± 1 % typ. mol %

Calorific value  (Hs)

± 1% of the measurement value

Density (dn)

± 1% of the measurement value

Repeatability

Proportion determination

± 1 % typ. mol %

Calorific value (Hs)

± 1% of the measurement value

Density (dn)

± 1% of the measurement value

Statistical distribution value with 2 sigma of 48 measuring points

Measuring time, measuring interval, reaction time

Measurement time

0.1 seconds

Measurement interval

1 second

Reaction time

T90 within approx. 2s

Operating / storage temperature

- 20 to + 80 °C

Explosion protection

May be used for zone 0 – and thus also for zones 1 and 2.

Multi-component mixtures

Thanks to its high sensitivity, the sensor is highly suitable for tracing changes in gas nature in the case of gas mixtures with more than two components

Measurement range

H-gas or L-gas or LNG gaseous

Accuracy

Calorific value (Hs)

< ± 1 MJ/m3

Relative density (dn)

< ± 0.02 typ.

Repeatability

Calorific value (Hs)

± 0.2 MJ/m3

Relative density (dn)

± 0.002

Statistical distribution value with 2 sigma of 48 measuring points

Sensitivity

Calorific value (Hs)

± 0.4 MJ/m3

Relative density (dn)

± 0.004

Measuring time, measuring interval, reaction time

Measuring time0.1 seconds
Measurement interval1 second
Reaction timeT90 within approx. 2s

Operating / storage temperature

- 20 bis + 80 °C

Explosion protection

May be used for zone 0 – and thus also for zones 1 and 2.

How often should one perform a calibration check on the gasQS™ static?

The gasQS static as a process instrument experiences wear from the conditions of the process in which it is installed. Temperature cycles, electronic component tolerance shift including the sensor chip and contamination build up over time on the sensor chip will all contribute to affecting the accuracy of the instrument. It should therefore regularly undergo, at a minimum, a calibration check if not a recalibration. But how often?

gasQS static does not have specified due dates for calibration. Mems AG designed the device from the very beginning in such a way that the above influences have the smallest possible effect on the long-term behavior of the sensor.

The entrance to the measuring chamber is protected by a double-mesh filter against the entry of dirt particles. The chip sensor has passed its long-term test in several million passenger cars as a mass flow meter of the intake air, but also in household gas meters, over more than 6 years, no reduction in performance of the sensor could be detected. When installed correctly, i.e. in upside-down position, no contamination of the chip, which would impair its function, is to be expected even in long-term operation with non-condensing gases. All electronic components meet the requirements of the strict standards of the automotive industry, so no premature aging effects should occur from this side either.

Mems suggests that gasQS static undergoes a calibration check every two years. However, based on the application conditions, and perhaps company quality procedures, each customer must determine when they need to send in an instrument for recalibration.

The easiest way to check is to use one of the gases listed on the "Calibration Documentation" to compare the measured values obtained with those of the initial test. If this is not possible, Mems is happy to take on this task for its customers.

We would be happy to provide you with a personal quote

Florian Krischker

Product Manager gasQS
Phone: +41 (0)56 481 90 74
flrnkrschkrmmsch

Florian Krischker

Explanatory video gasQS™ technology

This website uses cookies. By using the website, you consent to the use of cookies. Data protection information