• Chlorine or sulfur dioxide gas detection
• Monitors 1 to 8 locations
• Automatic or manual scanning
• Maintenance-free, long-life sensor
• Front panel setup and control
• Audible alarm annunciator
• RFI/EMI protection
• Optional remote indicator
• Optional power back-up

The modular design for the gas detector provides easy installation of the receiver and sensor module. Quad-Point Gas Detector Model 1690 provides continuous detection and alarming the ambient presence of low concentrations of toxic gases. The microprocessor-based receiver can accept input from up to four independent sensors each designed to accurately determine PPM levels of toxic gases. The receiver enclosure is NEMA 4X rated and can be wall mounted wherever the monitored gases are manufactured, stored or utilized. Each gas sensor may be located up to 1000 feet (305 meters) from the receiver. Multiple relays allow for remote alarming and activation of ancillary safety equipment such as blowers, scrubber, valves, etc

Series 1690 Gas Detector is highly sensitive and detects and monitors gas levels well under OSHA requirements. The sensors respond immediately to the presence of gas and quickly recover after the gas has cleared. The sensors are designed to eliminate false alarms caused by interference gases and environmental conditions. The four-line digital display shows the operating conditions of each of the sensor simultaneously. This includes the indication of the actual detected gas levels in either PPM or mg/m3 as well as any operational or concentration alarms.