Perry 1GA300M Manual Download

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Gas Control Unit 1GA300M

IP44 external protection

Zones Max 3

Analog input 4 ÷ 20mA
Detection Explosive and/or toxic gases

1st

LEVEL 1° Pre alarm

(EXPLOSIVE GAS) 120 ppm (TOXIC GAS)

1st Alarm. This was set to 8 % of L.E.L.

2nd LEVEL 2°

Pr alarm

(EXPLOSIVE GAS) 200 ppm (TOXIC GAS)

2nd Alarm. This was set at 13% of L.E.L.

3rd LEVEL- Main Alarm,

(EXPLOSIVE GAS) 300 ppm (TOXIC GAS)

This was set at 20 % of L.E.L.

Main Power Supply ........................................................................................... 110/230 VAC ± 10% 50/60 Hz
Secondary Power Through Battery Max 2,2 Ah (Optional)..................................................12 V DC

±10%

Battery Charger max 2.2 Ah ............................................................................................................... controlled

Power Demand ......................................................................................................................8,3W max @ 230V
Power Demand ...........................................................................................................................4W max @ 12V

Relay Contact Range ..................................................................... 10A 250VAC resistive - 5A 30VDC resistive

Monitored Gas Indication ..................................................................................... through backlit color display

Micro-switches to include or exclude the probes ................................................................... 1 per each probe

Connectable probes ....................... Semi-conductor, Catalytic, Electrochemical cell, Pellistore, Infrared Rays

Input Signal ................................................................................................................... 4 ÷ 20 mA on 220 Ohm
Device Accuracy ....................................................................................................................................... 1% FS

Functioning Temperature ........................................................................................................... -10°C ÷ +60°C

Waiting, blinking period

..................................................................................... about 90 seconds

(Warm up)

Manual Test .............................................................................................................................................. built in

Max. distance between probes and unit .................................................................................................. 100 m.
Cable diameter for connecting probes ....................................................................................................... 1mm

Size ................................................................................................................................................. 144x144x108

Degree of Protection .................................................................................................................................... IP44

1 - TECHNICAL SPECIFICATIONS

The G 300M control unit has been designed and built according to European regulations to flexibly detect the

1 A

presence of

toxic and/or explosive gas and OXYGEN, through the connection of 3 remote probes

The presence of this and other

devices makes the control unit suitable for Tertiary and Industrial uses.

1 A

The G 300M control unit has three danger levels:

Other technical features make this control unit extremely versatile and reliable; for example, by using a series of
microswitches it is possible to:

In addition to the alarm signal light, it is fitted with an internal buzzer for acoustic signals.

The IP44 external structure was designed for installations on walls, or on electrical panels by means of special brackets.

2) Maintenance TEST. With special arrangements you can enable the function of exclusion of the general alarm relay for a
maximum duration of 60 minutes.

1) System TEST. Pressing the TEST button tests the entire system, including the relays and accessories connected to it.

The presence of a TEST button allows to check the correct functioning of the control unit in two ways:

Response Time ............................................................................................................................................ < 2"

Through special sensors for oxygen it is possible to detect deficiency or excess of oxygen.

1st Pre Alarm ............................................................................................... set to 8% of L.E.L. or 120ppm CO
2nd Pre Alarm ............................................................................................ set to 13% of L.E.L. or 200ppm CO
Final Alarm ................................................................................................. set to 20% of L.E.L. or 300ppm CO
OXYGEN alarm ........................................................................................ Oxygen deficiency, Oxygen Excess

Number of Conventional Sensors that can be connected ....................................................................... Max 3

Microswitch to select OXYGEN detection ..................................................................................... incorporated

Type of faults detected by Fault Circuit ......................................................... interruption, short circuit, or wear

Connection: the cable of connection of the probe

must not be installed together with the power cables

Otherwise, make sure to use a shielded cable

Select or disable

the probe when not installed or faulty;

Select
Choose
Choose

intrinsic safety

the type of gas to be detected (toxic or explosive);

the relay functioning mode (pulsed or continuous);
to enable or disable of the