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Safety grounding terminal. 

A cable of adequate diameter must ground any terminal with this signal.

The accordance with Directive DEEE (2002/96/EC) this product may not be disposed with household 
waste. Dispose of this product at a collection site intended for electrical waste.

Important Information

Gas detectors must be checked for correct functioning by a qualified person after the installation but 
before putting into operation. The detector was checked for correct functioning prior to delivery. The 
calibration was performed with suitable calibration gases. This does not release the user from the 
obligation to perform a check with test gas when the transmitter is put into operation after the installation 
and before putting into operation.

Limitation of liability 

Neither Invest Electronics Ltd nor any other affiliated organization shall be held liable under any 
circumstances for any damage whatsoever including, without limitations, damages for loss of production, 
interruption of production, loss of information, controller failure, personal injury, loss of time, money, or 
materials, or for any indirect or consecutive consequence of loss occurring during the use of the product 
or the inability to use the product, even in the event that Invest Electronics Ltd had been informed of such 
damages.

Warranty 

We hereby guarantee that gas detectors GS-300.A/GS-300.N have been manufactured and tested to the 
highest quality standards. 

We warrant above products to be free from materials and work defects for the period of 24 months from 
the date of purchase. If such defects appears during the warrantee period products will be repaired or 
replaced with new products without charge.

Summary of Contents for GS-300.A

Page 1: ...GS 300 A GS 300 N GAS DETECTORS Operation Manual Revision A 2...

Page 2: ...the express written consent of Invest Electronics is strictly prohibited Due to ongoing research and development the specifications of this product may be changed at any time without notice INVEST ELE...

Page 3: ...Installation and wiring 9 1 Mounting the sensor 9 2 Mechanical mounting 9 3 Electrical connection 9 4 Analogue gas detector GS 300 A 9 5 Addressable gas detector GS 300 N 10 Operating instructions 10...

Page 4: ...facturer reserves the right to modify the technical characteristics of its equipment without notice to improve product performance This user manual and its contents are the inalienable property of Inv...

Page 5: ...ation Limitation of liability Neither Invest Electronics Ltd nor any other affiliated organization shall be held liable under any circumstances for any damage whatsoever including without limitations...

Page 6: ...uring method The following mesuring methods are used 1 Cathalityc sensors for mesurement of explosive gases 2 Electrochemical sensors for toxic gases 3 Infrared sensors for CO2 4 Semiconductor sensors...

Page 7: ...Front view gas detector GS 300 A Front view gas detector GS 300 N...

Page 8: ...Inside view gas detector GS 300 A Inside view gas detector GS 300 N...

Page 9: ...and maintenance Mechanical mounting Gas detector is attached to the wall via 4 mounting screws Sensor opening to be placed downwards Drill 4 holes according to the Drilling diagramme Drilling diagramm...

Page 10: ...must be connected using shielded cable with twisted pair for communication A and B terminals and another pair for the power supply of gas detectors The end of line resistor must be connected in the la...

Page 11: ...e first 30 days after installation During this period it is possible to observe how well the detector is adapting to its new environment If the detector functions properly for 30 continuous days this...

Page 12: ...exterior of the enclosure with a damp cloth Do not use alcohol or ammonia based liquids to clean the detector Servicing We recommend the user to periodically inspect the proper triggering of alarm an...

Page 13: ...el ordering code Detected gas Gas concentration GS 300 A AMM 2000 Ammonia 0 2000 ppm GS 300 A 134A 2000 R 134a 0 2000 ppm GS 300 A 404A 2000 R 404a 0 2000 ppm GS 300 A 407C 2000 R 407c 0 2000 ppm GS 3...

Page 14: ...dering code Detected gas Gas concentration GS 300 N AMM 2000 Ammonia 0 2000 ppm GS 300 N 134A 2000 R 134a 0 2000 ppm GS 300 N 404A 2000 R 404a 0 2000 ppm GS 300 N 407C 2000 R 407c 0 2000 ppm GS 300 N...

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