ANNUNCIATOR

ZSB-1 Zener Barriers are also developed for interposing between signal contacts in Hazardous Area and Instalarm Annunciators in Safe Area location. These are also tested and certified by CMRS Dhanabad.

IS annunciators are available for 110V AC or 230V AC power supply. The available sequences are auto reset and manual reset type. The number of points per cabinet are four to thirty points in various configuration. Four LEDs per window are provided, since filament lamps are not permitted in Hazardous area location. Pneumatic hooter with flame proof solenoid valve is available for audible alarm in hazardous area location.

Model ISA-1 is an intrinsically safe alarm annunciator suitable for Group IIA, IIB and IIC application as per IS-5780-1980. This design is tested and certified by the only authority in india viz. CMRS Dhanabad. The design comprises of intrinsically safe power supply unit suitable for SAFE AREA location and annunciator logic with LED display windows located in HAZARDOUS AREA.