SELECTIVE MICROPROCESSOR-BASED DOMESTIC GAS DETECTORS WITH N.O. VALVES AND MANUAL RESET

RGS 148 - 248

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APPLICATION

Electronic digital detectors fitted with internal methane or LPG internal sensing element. Option of connecting 1 or 2 methane, LPG or CO outside sensors. Signals pre-alarm, alarm and fault in sensing element.

Complies with CEI EN 50194 and CEI EN 50244 (methano e LPG); CEI EN 50291 and CEI EN 50292 (CO) regulations.

Optional sensors:

1 or 2 methane detecting sensors (SRS 158), LPG (SRS 258), CO (SRS 358).

FEATURES

Power supply: 230 V ~ .
Consumption: 2 VA.
Protection: IP 42.
Domestic type enclosure: 130 x 80 x 37 mm.
Wall mounting.
Low-voltage (about 20 V–) pulsed output for ERA valve (supplied) N.O. with manual reset.

				Valve supplied
Code	Internal sensor	Alarm threshold	Pre-alarm threshold	Code	DN	Max. press	Flow rate⁽¹⁾	Data sheet
RGS 148.15	methane	0.80 %	0.50 %	ERA 015	1/2"	200 mbar	1.5 m³/h	G 226
RGS 148.20	methane	0.80 %	0.50 %	ERA 020	3/4"	200 mbar	2.3 m³/h
RGS 148.25	methane	0.80 %	0.50 %	ERA 025	1"	200 mbar	3.5 m³/h
RGS 248.15	LPG	0.35 %	0.20 %	ERA 015	1/2"	200 mbar	0.9 m³/h
RGS 248.20	LPG	0.35 %	0.20 %	ERA 020	3/4"	200 mbar	1.4 m³/h
RGS 248.25	LPG	0.35 %	0.20 %	ERA 025	1"	200 mbar	2.2 m³/h

(1) Flow with pressure drop of 1 mbar (10 mmWG).

PRESSURE DROP ERA

100 mbar = 10 kPa = 1.000 mm.WG

FEATURES OF GAS SOLENOID VALVES

Model

Operation

Advantages

Disadvantages

Normaly open with manual re-set

ERA

With power closes. Without power opens only by manual action.

In kitchen permits using gas even in event lack of mains supply.

In boiler plant, in event failure of mains power, valve remains open and burners safety system operates.On return of power, unnecessary manual operation to re-start plant.

In event lack of mains power, valve remains open and gas safety system remains active only if powered by back-up battery.

At present these are not subject to approval.