Vaisala DEWCAP DM500 Uživatelská příručka Strana 134
- Strana / 138
- Tabulka s obsahem
- KNIHY
Hodnocené. / 5. Na základě hodnocení zákazníků
User's Guide ______________________________________________________________________
132 _________________________________________________________________ M210205EN-D
xxTh ⋅+⋅+⋅= 5.2)00189.001.1((9)
where
x = mixing ratio (g/kg)
T = temperature (ºC)
h = enthalpy
Humid Air Volume/Dry Air Volume PPM
v
Parts per million (PPM) by volume is the ratio of the partial pressure
of the water vapor to the partial pressure of dry gas. This can be
calculated with a reasonable accuracy with following formula:
6
10))-/(( ⋅=
wtotwv
PPPPPM (10)
where
P
w
= water vapor pressure
P
to
t
= total pressure
Effect of Pressure on Dewpoint
Changing the total pressure of a gas changes the partial pressures of
the component gases according to Dalton’s law, and therefore changes
the dewpoint/frostpoint temperature of the gas. This can be
represented as follows:
2211
// PwPtPwPt = (11)
where
P
t
= total pressure of the gas
P
w
= partial pressure of water vapor
Using a Condensation Hygrometer
It is useful to consider the behavior of water vapor when working with
any condensation hygrometer. Keep the following in mind when
making measurements:
Contamination – Water soluble contaminants, such as salt, can have a
significant effect on saturation vapor pressure. Some gases will also
go into solution with water. Water soluble contaminants cause a
lowering of vapor pressure known as Raoult Effect, and a
corresponding measurement error.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 17 6
- CHAPTER 18 7
- CHAPTER 19 7
- APPENDIX A 7
- List of Figures 8
- List of Tables 8
- GENERAL INFORMATION 9
- General Safety Considerations 10
- ESD Protection 11
- Regulatory Compliances 11
- Trademarks 14
- License Agreement 14
- Warranty 14
- PRODUCT OVERVIEW 15
- Front Panels 17
- Back Panels 19
- FUNCTIONAL DESCRIPTION 23
- Sensing Element 24
- RF-Signal 24
- Contamination and Chemical 25
- Resistance 25
- GENERAL INFORMATION ABOUT 27
- SAMPLING AND RESULTS 27
- Measuring in Overpressure 28
- Cooling Capacity 29
- Flow l/min 31
- Tsensor /C 31
- INFORMATION ON OPTIONAL PARTS 33
- SETTING UP FOR OPERATION 37
- Selecting the Cooling Method 40
- Connecting the Cooling Liquid 41
- MEASURING THE DEWPOINT 43
- START/STOP 44
- DISPLAYS AND MENUS 47
- Graphical Display 48
- Menus and Navigation 49
- BASIC SETTINGS 51
- Key Click ON/OFF 52
- Setting Date and Time 52
- Device Information 53
- Reverting Factory Settings 54
- DISPLAY SETTINGS 55
- Hold/Save Display 56
- Graphic Trend 57
- Contrast Adjustment 58
- Alarm Sound 58
- MEASUREMENT SETTINGS 61
- Forced Freezing 62
- Cooling Method Air/Water 62
- Statistical Filtering 63
- Response Speed 64
- Pump ON/OFF 64
- Transient Recovery Time 65
- OK to confirm the settings 66
- SELF DIAGNOSTICS SETTINGS 67
- Sensor Circuit Check 68
- Cooling Capacity Test 69
- Error History 70
- RECORDING DATA 71
- Stopping Recording 72
- Viewing Recorded Data 72
- Deleting All Record Files 73
- OUTPUT INTERFACES 75
- Serial Communication Settings 76
- Analog Outputs (Optional) 77
- Relay Outputs (Optional) 79
- CALIBRATIOND AND ADJUSTMENT 83
- Making an Adjustment 84
- SERIAL LINE COMMANDS 87
- Output Commands (DMI500) 88
- >intv 1 min 90
- Output interval: 1 MIN 90
- Operational Commands 93
- HEAT ON/OFF<cr> 94
- Detection 94
- SCAL<cr> 95
- PTEST<cr> 95
- ANAL ON/OFF<cr> 96
- Freezing Procedure 96
- FFROST ON/OFF<cr> 96
- Setting Commands 97
- TIME [date time]<cr> 98
- RSEL Setting the Relays 98
- RSEL [q1 q2]<cr> 98
- ASEL [x y z]<cr> 99
- AERR<cr> 100
- COOLER [WATER/AIR]<cr> 101
- FLOW Setting the Flow Value 101
- FLOW<cr> 101
- TP Setting the Temperature 103
- TP<cr> 103
- XTP xx.xx<cr> 103
- Adjustments 104
- Example: 105
- CTP<cr> 106
- FCAL<cr> 107
- PCAL<cr> 107
- OPEN x<cr> 110
- CLOSE<cr> 110
- PLAY [file]<cr> 110
- VERS<cr> 112
- MI70 LINK PROGRAM 113
- Displayed Quantities 114
- Sensing Unit Status 114
- Real-Time Quantities 114
- Real-Time Update Interval 114
- MAINTENANCE 115
- Error Messages 117
- Technical Support 118
- Return Instructions 118
- SPECIFICATIONS 121
- Dew / Frostpoint [°C] 122
- Integrated Flow (Optional) 123
- DMP501 Dewpoint Sensing Unit 123
- Options for DMP501 124
- DMI500 User Interface Unit 124
- Electromagnetic Compatibility 125
- Dimensions (in mm) 125
- PPPPP +++= (1) 129
- Saturation Vapor Pressure 130
- Dewpoint Temperature (T 130
- Frost Point Temperature (T 130
- Relative Humidity (RH) 131
- Mixing Ratio (x) 132
- Absolute Humidity (a) 133
- Wet Bulb Temperature 133
- Enthalpy (h) 133
- // PwPtPwPt = (11) 134
Související produkty a manuály pro Měření, testování a kontrola Vaisala DEWCAP DM500
(157 stránky)© 2020, manymanuals.cz. Všechna práva vyhrazena. | 0.040 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Komentáře k této Příručce