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gasQSTM Measuring systems

Mems AG has been operating successfully on the market as a service company since 2003. The multidisciplinary team of physicists and engineers has extensive experience in the development and construction of measuring systems of all kinds.

The many years of experience in the field of flow measurement and gas analysis are used here to offer the customer perfectly tailored solutions. The heart of the measuring system is always based on gasQS technology. The very robust correlative measuring instruments are an in-house development of Mems AG and the answer to the increasingly demanding tasks in handling combustible gases.

Of course all systems consist of technically proven components and are manufactured, calibrated and tested in Switzerland.

gasQS flonic commissioning

Fast commissioning

gasQS flonic application

Outdoor and indoor applications

gasQS flonic design

Robust design

gasQS flonic mounting

Easily mounted

gasQS flonic compact

Compact

Prices and purchase orders

We would be happy to provide you with your personal offer in case of an inquiry.

Standard versions

For the specifications, please select the appropriate standard version below. If the characteristics do not fit your application, please contact us.

gasQSTM Measuring system Ex3G

This is a complete solution for use in hazardous areas. The system contains all measurement and ATEX-relevant components directly in the housing and requires no additional installations. The user only has to provide power supply, fieldbus, the sample gas and exhaust gas lines.

Measuring range1: Density (dn) 0.711 … 0.970 kg/m3
  Lower calorific value (Hi) 27.0 … 43.0 MJ/m3
  Higher calorific value (Hs) 30.2 … 47.2 MJ/m3
  Wobbe Index (WS) 39.6 … 56.5 MJ/m3
 Methane number AVL 60 … 100
Accuracy:Density (dn) ± 0.007 kg/m3
Lower calorific value (Hi) ± 1.0 MJ/m3
Higher calorific value (Hs) ± 1.0 MJ/m3
Wobbe Index (WS) ± 1.0  MJ/m3
Methane number AVL± 3
Repeatability2:Density (dn) ± 0.003 kg/m3
  Lower calorific value (Hi) ± 0.5 MJ/m3
  Higher calorific value (Hs) ± 0.5 MJ/m3
  Wobbe Index (WS) ± 0.5 MJ/m3
  Methane number AVL ± 2

Specifications

 
Measuring time:≤ 30 seconds
Measuring interval:continuous, programmable
Reaction time:T90 within 3 measuring intervals
Operating / storage temperature:- 10 … + 55 °C 3
ATEX device protection class:Ԑx II 2G Ex ib IIC T4 Gb (SEV 18 ATEX 0111 X)

Media

 
Media:dry, neutral gases (10 μm filtering)
Input pressure range:+ 3.5 … + 30 bar relative
Permissible overload / burst pressure:+ 33 bar relative
Counterpressure on outlet side:≤ 400 mbar relative / ≤ 1.4 bar absolute
Gas consumption: ca. 0.1 ln/measuring interval

Electrical

 
Output signal: Modbus-RTU (EIA-485 2-wire) 4
Supply voltage: 230 VAC
Power requirement: ≤ 1.0 W (excl. heater option)

Mechanical

 
Gas connections: Swagelok 6 mm
Dimensions (l x w x h): 650 x 600 x 210 mm
Weight: approximately 35 kg
Degree of protection:IP66

_____
1 Reference conditions 0 °C, 25 °C, 1013.25 mbar absolute
Factory settings: MJ/m3, kg/m3 at reference conditions, further references and units are deposited
Further output values can be found in the order code or on request
2 Statistical scattering value with 2 sigma of 48 measuring points
3 Media and ambient temperature
4 Factory settings Modbus: 19200 bps, even parity bit + 1 stop bit, slave address: 0x01

gasQSTM Measuring system nonEx

For installations in secure environments this system offers the solution. Power supply and heating is installed and connected directly in the compact control cabinet. The actual measuring instrument is a gasQS flonic. The entire assembly is tested for leakage with helium before delivery.

Measuring range1: Density (dn) 0.711 … 0.970 kg/m3
  Lower calorific value (Hi) 27.0 … 43.0 MJ/m3
  Higher calorific value (Hs) 30.2 … 47.2 MJ/m3
  Wobbe Index (WS) 39.6 … 56.5 MJ/m3
 Methane number AVL 60 … 100
Accuracy:Density (dn) ± 0.007 kg/m3
Lower calorific value (Hi) ± 1.0 MJ/m3
Higher calorific value (Hs) ± 1.0 MJ/m3
Wobbe Index (WS) ± 1.0 MJ/m3
Methane number AVL ± 3
Repeatability2: Density (dn) ± 0.003 kg/m3
Lower calorific value (Hi) ± 0.5 MJ/m3
Higher calorific value (Hs) ± 0.5 MJ/m3
Wobbe Index (WS) ± 0.5 MJ/m3
Methane number AVL± 2

Specifications

 
Measuring time:≤ 30 seconds
Measuring interval:continuous, programmable
Reaction time:T90 within 3 measuring intervals
Operating / storage temperature:- 10 … + 55 °C 3

Media

 
Media:dry, neutral gases (10 μm filtering)
Input pressure range:+ 3.5 … + 30 bar relative
Permissible overload / burst pressure:+ 33 bar relative
Counterpressure on outlet side:≤ 400 mbar relative / ≤ 1.4 bar absolute
Gas consumption:ca. 0.1 ln/measuring interval

Electrical

 
Output signal: Modbus-RTU (EIA-485 2-wire) 4
Supply voltage: 230 VAC
Power requirement: ≤ 1.0 W (excl. heater option)

Mechanical

 
Gas connections: Swagelok 6 mm
Dimensions (l x w x h): 650 x 600 x 210 mm
Weight: approximately 35 kg
Degree of protection:

IP66

_____
1 Reference conditions 0 °C, 25 °C, 1013.25 mbar absolute
Factory settings: MJ/m3, kg/m3 at reference conditions, further references and units are deposited
Further output values can be found in the order code or on request
2 Statistical scattering value with 2 sigma of 48 measuring points
3 Media and ambient temperature
4 Factory settings Modbus: 19200 bps, even parity bit + 1 stop bit, slave address: 0x01

gasQSTM Measuring system LP

The gasQS flonic low pressure (LP) offers the customer the great advantage of being able to determine the gas quality in real time at very low system pressures. This is of interest for applications in distribution networks and power plants. The sample gas can be easily returned to the network after analysis. This minimizes the gas loss through the measuring equipment and further increases the efficiency of the entire system.

Measuring range1:Density (dn) 0.711 … 0.970 kg/m3
  Lower calorific value (Hi) 27.0 … 43.0 MJ/m3
  Higher calorific value (Hs) 30.2 … 47.2 MJ/m3
  Wobbe Index (WS) 39.6 … 56.5 MJ/m3
  Methane number AVL 60 … 100
Accuracy: Density (dn) ± 0.007 kg/m3
  Lower calorific value (Hi) ± 1.0 MJ/m3
  Higher calorific value (Hs) ± 1.0 MJ/m3
 Wobbe Index (WS) ± 1.0 MJ/m3
Methane number AVL± 3
Repeatability2:Density (dn) ± 0.003 kg/m3
Lower calorific value (Hi) ± 0.5 MJ/m3
Higher calorific value (Hs) ± 0.5 MJ/m3
Wobbe Index (WS) ± 0.5 MJ/m3
Methane number AVL± 2

Specifications

 
Measuring time: ≤ 30 seconds
Measuring interval: continuous, programmable
Reaction time: T90 within 3 measuring intervals
Operating / storage temperature: Standard: + 5 … + 35 °C 3
  Extended 4: - 20 … + 35 °C 3
ATEX device protection class: Ԑx II 3G Ex e IIC T4 Gc

Media

 
Media: dry, neutral gases (10 μm filtering)
Input pressure range: - 50 … + 500 mbar relativ
Permissible overload / burst pressure: Overload valve switches at + 700 mbar relative
Counterpressure on outlet side:≤ 500 mbar relative / ≤ 1.5 bar absolute
Gas consumption: ca. 0.5 ln/measuring interval

Electrical

 
Output signal: Modbus-RTU (EIA-485 2-wire) 4
Supply voltage: 230 VAC ±5 % / 50 Hz ±2 %
Power requirement: ≤ 120 W temporarily during measurement

Mechanical

 
Gas connections: Swagelok 6 mm
Dimensions (l x w x h): 800 x 760 x 300 mm
Weight: approximately 75 kg
Degree of protection:IP66

_____
1 Reference conditions 0 °C, 25 °C, 1013.25 mbar absolute
Factory settings: MJ/m3, kg/m3 at reference conditions, further references and units are deposited
Further output values can be found in the order code or on request
2 Statistical scattering value with 2 sigma of 48 measuring points
3 Media and ambient temperature
4 Version with ATEX heating available
5 Factory settings Modbus: 19200 bps, even parity bit + 1 stop bit, slave address: 0x01

Notice

The technical development is constantly progressing but the website does not update automatically. Therefore, technical changes to illustrations and information are reserved. We will be pleased to send you the latest version of the data sheet on request.