à¤Ã×èͧµÃǨ¨Ñºá¡çÊ MULTI-GAS DETECTOR à¤Ã×èͧµÃǨ¨Ñºá¡çÊ MULTI-GAS > GfG's G450 is a compact and lightweight 4-gas detector that continuously measures CO, H2S, O2 and combustibles in ambient air à¤Ã×èͧÇÑ´á¡çÊ Gas Detector Oxygen H2S LEL COWatertight design GfG's G450 is a compact and lightweight 4-gas detector that continuously measures CO, H2S, O2 and combustibles in ambient air. Its functional and watertight design (IP 67) incorporates an impact proof, rubberized housing to meet the toughest requirements of harsh environments. Easy operation The G450 simplifies gas detection with three menu-driven soft touch keys. A large graphic display provides accurate readings of all sensors at a glance. Long life sensors Factory-calibrated sensors ensure accurate readings. The extended sensor life reduces the cost of ownership. Sensors come with a three year warranty.. Operation time Depending on the frequency and duration of alarms, the device will operate for up 25 hours. Only 4 hours are needed to fully recharge a unit equipped with the NiMH battery pack. Perfect alarm system An extremely loud audible alarm (103 dB at 30 cm) and bright, rotating alarm lights provide a reliable warning for gas hazards. Depending on the severity of the alarm, the display changes color from green to orange or red. The detector's battery status and readiness for operation are continously monitored and displayed. Critical conditions will cause an immediate alarm. TLV, TWA and STEL values are continuously monitored. A vibrating alarm gives an extra degree of protection in loud environments. Sampling pumpà¤Ã×èͧÇÑ´á¡çÊ Gas Detector Oxygen H2S LEL CO A detachable, self-powered pump is available for sampling confined spaces prior to entry. A low flow alarm is triggered in the event of insufficient flow to the monitor caused by blocked or bent tubing. Datalogger The datalogger records gas concentrations and alarms over a period of 50 hours. The data can be downloaded to a PC for viewing, storage and evaluation. Easy reading The large, high resolution topmounted display can be flipped 180o by pressing two buttons, allowing measurements to be easily read while the detector is being worn on a belt, pocket or lapel. Interchangeable battery packs Rechargeable NiMh or alkaline battery cartridges are easily interchangeable in the field, allowing the user to choose the best choice for their application. The intelligent electronics automatically recognize the type of battery pack installed, allowing the remaining power level to be displayed accurately.. Technical Data Gases / warranty Combustible gases (CH4) Oxygen (O2) Carbon monoxide (CO) Hydrogen sulfide (H2S) COSH (dual channel CO and H2S sensor) Alarms Audible - 103 dB at 30 cm (restrictable to 95 dB) Visual - Bright, rotating 360° LED's, plus heterochromatic backlit display Vibrating alarm Detection range and resolution CH4 0-100% LEL 0.5% CH4 0-5% volume 0.05% O2 0-25% volume 0.1% CO 0-300 ppm 1 ppm H2S 0-100 ppm 1 ppm COSH CO (0-300 ppm) and H2S (0-100 ppm) 1 ppm Casing IP 67 (dust and highly water resistant) Accessories Datalogging kit Self powered detachable sample pump (run-time up to 25 hours) Spare battery cartridges (alkaline or rechargeable) Rechargeable (NiMh) battery cartridge with optional LED flashlight Expected sensor lifetime CH4 3-5 years O2 3 years CO up to 4 years H2S 3 years COSH 3 years Weight 0.62 pounds (280 g) Dimensions 4.4x2.6x2 inches (66x11.8x50.8 mm) (HxWxD) Rating and certifications (intrinsic safety) cCSAus Class I, Division 1, Group A, B, C, and D Hazardous locations Temp code T3 Operational time Up to 25 hours Charge time 4 hours with rechargeable NiMh cartridge Power source 2 "AA" batteries or rechargeable NiMh battery cartridge Temperature range -4° to +122°F (-20 to 50°C) ambient 5 to 95% r.h. (non-condensing)