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 Gas :  | 
 H2S  | 
 CO  | 
 O2  | 
 Combustibles  | 
| 
 Measuring Range :  | 
 0-100 ppm  | 
 0-500 ppm  | 
 0-25.0%  | 
 0-100% LEL or  | 
| 
 Auto zero  | 
 Yes  | 
| 
 Calibration  | 
 Automatic  | 
| 
 Backlight  | 
 Low light (auto); alarm condition (auto); reactivation on demand  | 
| 
 Full function self-test  | 
 Sensor integrity, circuitry and battery; audible/visual alarms  | 
| 
 Sensor  | 
 Plug-in, electrochemical cell (toxic and oxygen); catalytic (LEL)  | 
| 
 User field options  | 
 Confidence beep, pass code protection, latching alarms, calibration due date, “SAFE” display function  | 
| 
 ALARM INDICATORS  | 
 Clearly advises alarm levels both visually and audibly  | 
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 Visual alarms  | 
 Two flashing alarm bars visable from all angles  | 
| 
 LCD indicates gas present and alarm levels encountered  | 
|
| 
 Audible alarm  | 
 Typically 95 dB at 30 cm variable pulsed audible alarm  | 
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 Vibrator alarm  | 
 Pulses warning in gas alarm conditions, or for any status alarms  | 
| 
 Other  | 
 Low battery, over range, multiple gas and missing sensor  | 
| 
 ALARM LEVELS  | 
 Instantaneous Low Alarm for all gases; instantaneous High Alarm for all gases;  | 
| 
 TWA (time weighted average) and STEL (short term exposure limit) for H2S and/or CO; OL (over limit alarm) for combustible gases  | 
|
| 
 LCD  | 
 Continuous, alphanumeric gas readout and status display advises:  | 
| 
 Gases monitored  | 
 H2S, CO, O2, combustibles (0-100% LEL or 0-5.0% methane)  | 
| 
 Gas concentration  | 
 Simultaneous and continuously displays gas concentration(s) present (in ppm, %LEL, or % v/v)  | 
| 
 TWA ppm or %  | 
 Records STEL and TWA exposures and displays on demand  | 
| 
 Peak ppm or %  | 
 Records and displays peak exposure to gas and displays on demand  | 
| 
 Alarm setpoints  | 
 Displayed on activation  | 
| 
 TESTS:  | 
|
| 
 Full function self-test  | 
 Full function self-test on activation  | 
| 
 Battery  | 
 Continuous  | 
| 
 GENERAL SPECIFICATIONS  | 
 Rugged, composite material with integral concussion-proof boot  | 
| 
 Operating temperature  | 
 -4 to 122 oF / -20 to 50 oC  | 
| 
 Humidity  | 
 5% to 95% RH (non-condensing)  | 
| 
 EMI/RFI  | 
 Complies with EMC Directive 89/336/EEC  | 
| 
 Ingress Protection  | 
 IP65  | 
| 
 Battery run-time  | 
 16-18 hours on two AA alkaline cells / 14-16 hours on two NiMH rechargeable cells  | 
| 
 Size  | 
 2.4 x 4 x 1.3 in. / 6 x 10 x 3.3 cm  | 
| 
 Weight  | 
 7.4 oz. / 211 g  | 
| 
 WARRANTY  | 
 Full 2 year warranty including all sensors  | 
| 
 DATALOGGER OPTIONS  | 
 User-downloadable datalogger  | 
| 
 Data recorder  | 
 All events and occurrences  | 
| 
 Sampling rate  | 
 Factory set at 5-second intervals and user-settable from 1 to 127-second intervals  | 
| 
 Storage  | 
 4.4 months of continuous data via 32 MB Flash MMC card (64 MB cards are also available); when full, the wraparound feature replaces oldest data with most recent data  | 

 