Safe Ripening Chambers

Fixed Gas Alarm Systems for the conservation and ripening process of fruit and vegetables

Ripening in controlled atmosphere Reliable monitoring of CO2 / C2H4 / C2H4O and O2 deficiency

Fresh fruit and vegetables are alive and continue to breathe after the harvest. This leads to oxygen consumption and the formation of carbon dioxide and water vapour. Keeping the products fresh means slowing down the process while maintaining the quality of the product. Gas sensors are just as important as the modern technology of the ripening chambers.

They are required to permanently monitor the various gas concentrations involved in the ripening process. The sensors, controllers and warning devices from MSR-Electronic protect people and equipment effectively and monitor the system as a central point of the entire process. Modern communication technology makes it possible to react quickly.

The innovative compact controller of the PolyGard®2 series from MSR-Electronic is de-signed for connecting up to 10 gas sensors via its own field bus, serves to warn of various gases and is therefore ideal for the application.

The process of banana ripening  is probably the best known and consists of introducing ethylene into the storage room at concentrations around 150–200 ppm to accelerate the natural ethylene production of the banana itself.

Fruit Ripening
Fruit Ripening Chamber 


• Display for all displaying functions, configuration and calibration functions (no tool required)
• Fieldbus connection for up to 10 gas sensors (SB2-Units) with max.900m length
• Hardware and software according to SIL-compliant development process
• Modular technology (pluggable and exchangeable), reverse polarity and overload protected
• Internal function monitoring with integrated hardware watchdog
• 3 relays, 2 transistor outputs, 2 digital inputs
• Various housing types with IP65
• Warning buzzer and status LED for warning, fault, operation and service (optional)
• Operating voltage 230 V AC, with wide range input 100 to 240 V AC (optional), UPS (optional)

Hydrogen Gas Sensor
Ethylene Gas Sensor
Sensor Cartridge
Sensor Cartridge

Should you have any questions or concerns regarding this matter, please feel free to contact us or reach our experts to

Be sure, Be safe – Gas Detectors and Alarm System

The PERFECT Gas Leakage and Measuring Solution for fruit Ripening and cold storage application

The Season of juicy sweet fruit mango’s comes, we in cold storage and Fruit Ripening chamber started working on it, in this period we dosing/use  mango with ethylene gas and ammonia gas for ripening and storage and we all need to control & measure the amount of ethylene & ammonia we are supplying also need to aware about its leakage in open environment to control any hazardous incident, for all related solutions you can contact us any time .

ALVI Automation (India) Pvt Ltd in Association with GasAlarm Systems based in Sydney, Australia and MSR Germany specializing in gas detection & monitoring solutions with over 40 years of experience in the industry we like to think we know a little about the industry and how its , changed over the decades what we found lacking was good quality reliable products which were low cost, especially for the developing/emerging markets & countries.

So, we’ve taken it upon ourselves to slowly introduce such products one by one.

We dedicated to start with the most common product in gas detection worldwide, the humble ethylene and ammonia sensor Transmitter.

Countless brands, models & technologies exist however we feel ours has hit the spot when it comes to the all-important price/performance ratio.

We’ve kept it extremely compact! We’ve kept it extremely simple!

We’ll be honest, our aim is to sell this product at extremely low margins however in large quantities.Thus, ensuring you, the customer keeps buying and sees the value add in the product locally

Introducing the Ethylene/Ammonia Sensor Transmitter

  • The all-in-one sensor/transmitter is made in Germany under an OEM exclusive agreement for us.
  • It uses an Electro-chemical sensor cell. NOT semi-conductor or MEMs semi-conductor.
  • It offers an industry standard measuring range of Ammonia 0-1000 PPM and Ethylene 20-2000 ppm
  • It runs on an industry standard 2 wire 24VDC current loop with a 4-20mA output.
  • It has 2x onboard potentiometers for future on-going calibrations, A zero & a span/gain pot.

Please watch simple demo of our Gas leak Control and Monitoring System click here

Ethylene Sensor / Transmitters

  • Ethylene solid state semiconductor range 20-2000 ppm
  • Ethylene electrochemical range : 0-200 ppm
  • High accuracy, selectivity and reliability
  • Low zero point drift
  • Long sensor life time
  • Hardware & software according to SIL2 compliant development process

Ammonia Sensor/Transmitter

  • Range 0-1000ppm or 0-10,000ppm
  • Digital measurement value processing incl. temperature compensation
  • Internal function control with integrated hardware watchdog
  • Data / measured values in μC of the sensor unit, therefore simple exchange uncalibrated <> calibrated
  • High accuracy, selectivity and reliability
  • Low zero point drift
  • Long sensor life time

·  Hardware & software according to SIL2 compliant development process

For Pricing & Stock lead time please contact us or mail us at