Signaling device of combustible and toxic gases stationary two-channel SGS-901

SGS-901 gas contamination signaling devices (further - signaling devices), are intended for control and delivery of the alarm system about a gas contamination by combustible and toxic gases in the boiler rooms working at the liquefied or natural gases and also in inexplosive zones production, administrative and premises.

Signaling devices are intended for operation at a temperature from 0 to 50 °C and relative humidity of air to 95% at a temperature of 35 °C.

Food of signaling devices is carried out from ^{the alternating current main of (220+10-15) B} by frequency (50 ± 1) Hz.

Signaling devices consist of the device of threshold UPES-901, converters gas thermocatalytic PGT-901, electrochemical PGE-901 and the IEN7-1508 power supply. Converters thermocatalytic PGT-901 are issued for control of concentration of combustible gases of methane or propane. Converters electrochemical PGE-901 are issued for control of concentration of toxic gas of carbon oxide. A way of supply of gases - diffusive.

The PGT-901 and PGE-901 converters are issued with the built-in alarm system and without it. SGS-901 signaling devices containing the PGT-901 and PGE-901 converters with the built-in alarm system can be delivered without device of threshold UPES-901.

Converters are connected to an entrance of the device threshold, measuring the unified signal in the form of a direct current in range from 4 to 20 ma, and do not demand individual control or calibration with the device threshold.

Ranges and the main error of transformation of controlled gases by means of the listed converters are specified in table 1.