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DOMESTIC GAS DETECTORS WITH BACKUP BATTERYAND N.C. MANUALLY-RESET VALVE

RGH ...

rgh click on picture to enlarge

erc click on picture to enlarge

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APPLICATION

Gas detectors for domestic use supplied with internal methane or LPG sensor, battery backup having an autonomy of about one hour, and N.C. gas valve ERC 3.. with manual reset.

Monitor the concentration of gas in the air and, when this exceeds the threshold value, cuts off the 3 V – power supply to the valve. Indicates by means of LEDs and internal buzzer the states of pre-alarm, alarm and sensor fault.

Complies with CEI EN 50194 and CEI EN 50244 regulations.

FEATURES

  • Power supply: 230 V ~.

  • Consumption: 2 VA.

  • Protection: IP 42.

  • Dimensions: 130x80x37.

  • 3 V– output for N.C. ERC valve (supplied) with manual reset.

  • ERC valves:

    • Protection: IP 55.

        Valve supplied  
Code   Internal sensor Alarm threshold Code DN Max. press. Flow rate(1)

Data sheet

RGH 138.15   methane 0.80 % ERC 315 1/2" 500 mbar 1.5 m3/h G 310
RGH 138.20   methane 0.80 % ERC 320 3/4" 500 mbar 2.3 m3/h
RGH 138.25   methane 0.80 % ERC 325 1" 500 mbar 3.5 m3/h
RGH 238.15   LPG 0.35 % ERC 315 1/2" 500 mbar 0.9 m3/h
RGH 238.20   LPG 0.35 % ERC 320 3/4" 500 mbar 1.4 m3/h
RGH 238.25   LPG 0.35 % ERC 325 1" 500 mbar 2.2 m3/h
  • (1) Flow with pressure drop of 1 mbar (10 mmWG).

ACCESSORIES

Code   Description

Sensing element

Data sheet
ALH 835   Auxiliary power supply for RGH ... gas detectors with power backup 5 hours G 310
ABE 301   Emergency power supply for ERC ... valves. 20 hours

PRESSURE DROP ERC

FEATURES OF GAS SOLENOID VALVES

Model

Operation

Advantages

Disadvantages

 Normaly closed with manual re-set

ERC

Without power closes. 

With power opens only by manual action.

Maximum safety for all uses.

At each failure of mains supply, valve closes. When power returns valve has to be re-opened manually. 

Not suitable for kitchens because, if no power, user tends to re-open valve with mechanical aids. On return of power, safety system no longer functions.