EDINBURGH SENSORS Infared gas sensors: Guardian Range ZERO CALIBRATION KIT For Guardian NG CO2 Monitors • No calibration gas required • Zero correction can increase servicing intervals • Compatible with all CO2 versions of Guardian NG • Reduced Gas Cylinder Handling The long term drift in calibration of a Guardian® NG NDIR gas monitors is due to a variety of ageing factors most of which result in a small change in the relative strength of the IR signals reaching the detectors. This produces a very slow drift in the zero reading. Due to the nature of the detection process this zero offset produces a much greater calibration error at higher concentrations than at zero. Both offsets are generally fixed by correcting the zero indication. The CO2 Zero Calibration Kit for the Guardian® NG wall mounted monitor provides a convenient alternative to bottled gas for the checking of zero offsets and if necessary, zero calibration.

Infared gas sensors: Guardian Range ZERO CALIBRATION KIT For Guardian NG CO2 Monitors TECHNICAL SPECIFICATIONS GAS MEASUREMENT RANGE EDINBURGH SENSORS Expected Life >1000 calibration checks End of Life Indication Colour change from Green to White Spare Parts Replacement CO2 absorbtion cell PRODUCT INFORMATION • TOC • PERSONAL SAFETY • IAQ • BREWING • BIOGAS • LANDFILL • HORTICULTURE • AND MANY MORE... All specifications are believed to be correct at the time of publication, Edinburgh Sensors does not accept liability for any errors or omissions. Due to ourcontinuous...