PhD6 Multi-Gas Detector Reference Manual - Honeywell Analytics

TimeBattery Status IconThe battery status icon is located at the far lowerleft of the screen. The battery icon gives anindication of how much power is left in thebattery.When the battery icon is empty, it isconsidered a low battery condition and theuser should take the appropriate steps toeither recharge the Li-Ion battery orreplace the alkaline batteries.For more information on the lowbattery alarms, see section 2.5.5.IR Hourglass SymbolThe hourglass symbol along with IRare shown in the status bar duringthe IR sensor’s 1-minute warm-upperiod. Once the warm-up period is over, thehourglass will no longer be shown.PID Hourglass SymbolThe hourglass symbol along with PID are shownin the status bar during the PID sensor’s 5-minutewarm-up period. Once thewarm-up period is over, thehourglass will no longer beshown.When a PHD6 is equipped with both an IR and aPID sensor, the PID hourglass is shown since thePID sensor takes longer to warm up than the IRsensor.Heartbeat SymbolWhen the instrument is properlycharged, calibrated and functioningnormally, the heartbeat symbol willflash in the status bar.Pump Status IconIf the pump is attached andfunctioning, the moving fan iconwill appear in the status bar.Calibration and Bump Due WarningsIf the PHD6 is due forcalibration the calibrationbottle icon and triangularwarning symbol will be flashin the status bar.TimeThe time is shown on thecurrent gas readings screenat the lower right.2.2.2 Screen FlipThe screen orientation of the PHD6 may beflipped (so that it can be read looking down fromabove instead of up from below) by pressing theup and down arrows simultaneously at theCurrent Gas Readings screen.2.3 Turning the PHD6 OffTo turn the PHD6 off, pressand hold the MODE buttonuntil the display reads“Release MODE to shutdown”. Then release theMODE button. The displaywill briefly show “ShuttingDown” and “Saving Sensors”before the display goesblank.→2.4 Atmospheric Hazard AlarmsThe PHD6 is configured with a series of alarmsthat are designed to warn the user of hazardousatmospheric conditions.The PHD6 is designed todetect potentially life threatening atmosphericconditions. Any alarm condition should betaken seriously. The safest course of actionis to immediately leave the affected area, andreturn only after further testing determinesthat the area is once again safe for entry.2.4.1 O2 AlarmsThe PHD6 is equipped with both high and lowalarms for oxygen. Fresh air contains 20.9%oxygen.The low oxygen alarm indicates oxygendeficiency and is normally set at 19.5% at thefactory.The high alarm indicates oxygen enrichment andis normally set at 23.5% at the factory.2.4.2 Combustible Gas AlarmsThe PHD6 is equipped with a 2-stage alarm forconcentrations of combustible gas.The default LEL warning alarm setting is 10%LEL. The default LEL danger alarm setting is20% LEL.The default warning alarm for NDIR-CH 4 sensorsis 10% LEL or 0.5%/vol CH 4 . The default dangeralarm is 20% LEL or 1.0%/vol CH 4 .2.4.3 Toxic and VOC sensor alarmsThe PHD6 is equipped with up to four differentalarms for toxic gases and volatile organiccompounds (VOCs). The combination of alarms12