Infared gas sensors: Guardian Range ® KEY FEATURES • True volume % readout over a wide range of pressures (pressure compensated) • Graphical display of historic readings over a user-defined period • Graphic screen display provides more information • Easier transfer of data via on board RS232 Interface • Easy set-up using on-screen menus • Optional Ethernet Interface • Digital Alarm set points • Relay outputs for control of external devices • Password protection to prevent accidental or deliberate change of settings A NEW GENERATION OF GAS SENSORS The Guardian® NG range of infrared gas monitors offers near-analyser quality continuous sampling, measurement and display of target gas concentrations. The Guardian NG range provides high accuracy detection and measurement of either CO, CO2 or CH4 gases, where detection level ranges of between 0 – 3000ppm and 0 – 100% by volume are required. With tens of thousands of our monitors supporting critical processes in industries throughout the world we have a reputation for reliability, accuracy, long-term stability plus low maintenance requirements. This can be attributed to our proprietary infrared sensor technology and over thirty years of sensor design and manufacturing experience. Suitable for a wide variety of applications, these wallmounted monitors can detect gases from sampling points up to 30 metres away, using the built in sampling system. Our Guardian NG instruments are easy to install standalone products that require minimum set up. The Guardian NG has an integral LCD display and digital alarm set-point controls, housed in a robust plastic IP54 rated enclosure to prevent the ingress of particulates and water. When you purchase one of the Guardian NG range, you automatically access our one to one customer service and technical support right from product purchase through t

EDINBURGH SENSORS Infared gas sensors: Gu ardian Range GUARDIAN® NG For CO2, CH4, & N20 Accuracy** ±2% of full scale Response time T90 = <30 seconds from sample inlet Power consumption 15 W typical Warm-up time 1 minute (initial) 30 minutes (full specification) Humidity Measurements are unaffected by 0 - 95% relative humidity, non condensing 4 - 20 mA / 0-20 mA analogue output 11V guaranteed drive capability Outputs Alarm ranges: zero to full scale. Alarm 1 relay, Alarm 2 relay and Fault relay SPCO (single pole change-over) Voltage free contacts rating 8A at 250V AC (resistive...