Biosystems PhD Ultra Manual de instrucciones descargar pdf (Pagina 6)

5.2.2.2 PROBLEM: UNIT WILL NOT TURN OFF 47

5.2.2.3 PROBLEM: SENSOR READINGS UNSTABLE IN A KNOWN FRESH AIR ENVIRONMENT 48

5.2.2.4 PROBLEM: "X" APPEARS IN PLACE OF READING FOR SENSOR 48

5.2.2.5 PROBLEM: DISPLAY IS BLANK 48

5.2.2.6 PROBLEM: NO AUDIBLE ALARM 48

5.2.2.7 PROBLEM: KEYPAD BUTTONS (+,-, CAL, ALARM) DON'T WORK 48

5.2.2.8 PROBLEM: CAN’T MAKE A “ONE BUTTON” AUTO ZERO ADJUSTMENT (LCD SHOWS “TOO HIGH”

OR “TOO LOW” FOR ZERO ADJUST) 48

5.3 CHANGING THE PHD ULTRA MICROPROCESSOR PROM CHIP 48

5.4 MOTORIZED PUMP MAINTENANCE 49

5.4.1 Internal pump filter replacement 50

5.4.2 Specific problems with motorized pump 51

5.4.2.1 PUMP WILL NOT TURN ON 51

5.4.2.2 CAN’T RESUME NORMAL OPERATION AFTER A “LOW FLOW” SHUT DOWN 51

5.5 RETURNING YOUR PHD ULTRA TO BIOSYSTEMS FOR SERVICE OR REPAIR 51

APPENDICES 52

APPENDIX A TOXIC GAS MEASUREMENT - CEILINGS, TWAS AND STELS 52

APPENDIX B HOW TO DETERMINE WHERE TO SET YOUR ALARMS 53

APPENDIX C HOW TO CALIBRATE YOUR PHD ULTRA IN CONTAMINATED AIR 56

APPENDIX D SUGGESTED CALIBRATION GASES 57

APPENDIX E PHD ULTRA

TOXIC SENSOR CROSS SENSITIVITY DATA 58

APPENDIX F CALIBRATION FREQUENCY 59

APPENDIX G BIOSYSTEMS STANDARD WARRANTY GAS DETECTION PRODUCTS 60

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Biosystems PhD Ultra Manual de instrucciones Pagina 6