Retrotec DM-2A Instrukcja Użytkownika Pobierz pdf (Strona 4)

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Enable and Disable Devices ...................................................................................................................................... 35

Enable and Disable Flow Range Configurations ....................................................................................................... 36

5.3 Mode Setup ............................................................................................................................................. 37

5.4 Setting up your DM-2 for a NFPA Enclosure Integrity Test ..................................................................... 38

Setting up the units of results for a NFPA Enclosure Integrity test .......................................................................... 38

5.5 Performing an NFPA 2001 Enclosure Integrity Test (single point test as per 2008 edition) ................... 39

Achieve the Target Pressure (Method 2) – Using Set Speed .................................................................................... 40

5.6 Using the DM-2 to look for the locations of Leaks .................................................................................. 41

5.7 Setting up for a test with Alaska’s AkWarm software ............................................................................. 42

6 FIELD CALIBRATION ............................................................................................................................ 43

Gauge Calibration ..................................................................................................................................................... 43

7 TROUBLESHOOTING ........................................................................................................................... 45

7.1 DM-2 Rechargeable Battery Problems .................................................................................................... 46

7.2 Serial Number and Calibration Date Check ............................................................................................. 47

7.3 Moving Tubes Cause Fluctuating Pressures ............................................................................................ 47

7.4 Wind causes a fluctuating pressure......................................................................................................... 48

7.5 Time Averaging User Errors ..................................................................................................................... 49

7.6 Large fixed errors ..................................................................................................................................... 49

7.7 Wrong Flow Range or Device selected .................................................................................................... 50

7.8 No reference tube while pressurizing ..................................................................................................... 51

7.9 Windy conditions ..................................................................................................................................... 51

7.10 Pressure overshoots when using the Set Pressure key ....................................................................... 52

7.11 The keys on the DM-2 Keypad are not working .................................................................................. 53

7.12 Updating Firmware .............................................................................................................................. 54

Firmware Changes .................................................................................................................................................... 54

APPENDIX A: SYSTEM FLOW EQUATIONS FOR ALL DEVICES ......................................................................................... 55

APPENDIX B: CANNOT REACH @ PRESSURE FACTORS ............................................................................................... 58

Cannot Reach 50 Pa Factors ..................................................................................................................................... 58

Cannot Reach 25 Pa Factors ..................................................................................................................................... 59

APPENDIX C: TEMPERATURE CORRECTION .............................................................................................................. 60

APPENDIX C: EXPONENT ERRORS ......................................................................................................................... 62

GLOSSARY 64

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