Vaisala DRYCAP DMT340 SERIES Guide de l'utilisateur Page 19
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Chapter 2 __________________________________________________________ Product Overview
VAISALA _______________________________________________________________________ 19
CHAPTER 2
PRODUCT OVERVIEW
This chapter introduces the features, advantages, and the product
nomenclature of the Vaisala DRYCAP
®
Dewpoint and Temperature
Transmitter DMT340 Series.
Introduction to DMT340
The DMT340 transmitter measures dewpoint temperature accurately in a
measurement range from -60ºC to +80 ºC (-76 ... +176 ºF). The AutoCal
feature provides excellent long term stability of the measurement.
DMT340 incorporates the advanced DRYCAP
®
technology, which
enables reliable and high-performance dewpoint measurement.
Apart from the extended dewpoint measurement range the optional
modules provide for more flexibility. See Table 3 below for the
quantities that DMT340 measures and calculates. See Table 4 below for
the optional quantities measured by DMT340.
Table 3 Quantities and Their Abbreviations
Quantity Abbreviation Metric Unit Non Metric
Unit
Dewpoint/frost point
temperature (T
d/f
)
TDF ºC ºF
Mixing ratio (x) X g/kg gr/lb
Parts per million H2O ppm
v
/ ppm
w
ppm
v
/
ppm
w
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 5 6
- CHAPTER 6 6
- CHAPTER 7 7
- APPENDIX A 7
- List of Figures 9
- List of Tables 11
- GENERAL INFORMATION 13
- Version Information 14
- Feedback 14
- Recycling 15
- Regulatory Compliances 16
- Patent Notice 17
- Trademarks 17
- License Agreement 18
- Warranty 18
- PRODUCT OVERVIEW 19
- Basic Features and Options 20
- Structure of the Transmitter 21
- 0604-006 22
- INSTALLATION 25
- 0503-004 26
- 0804-065 26
- 0503-002 28
- Installation Kit 30
- Panel Mounting Frame 30
- 0704-002 31
- 0804-083 31
- Grounding the Cables 33
- 0605-028 34
- Probe Mounting 36
- Use with Sampling Cell 37
- CAUTION 38
- 0506-029 39
- 0503-034 40
- 0503-033 40
- 0503-021 42
- Standard 178 mm 120 mm 44
- Optional 400 mm 340 mm 44
- Tightening the Clasp Nut 45
- 0507-043 47
- Leak Screw Installation 49
- Process 50
- 0706-001 51
- 0503-022 53
- WARNING 55
- Warnings 55
- Installation 55
- Third Analog Output 59
- Alarm Relays 60
- RS-422/485 Interface 62
- LAN Interface 64
- WLAN Interface 65
- 0706-068 68
- OPERATION 71
- Graphic History 72
- 0706-030 73
- Changing the Language 75
- Rounding Setting 76
- Display Backlight Setting 76
- Display Contrast Setting 76
- Keypad Lock (Keyguard) 76
- Factory Settings 77
- Display Alarms 78
- 0802-069 79
- 0802-070 79
- Serial Line Communication 80
- User Port Connection 81
- Service Port Connection 82
- Using the Service Port 83
- LAN Communication 84
- Wireless LAN Configuration 87
- 0802-111 88
- 0802-110 88
- 0802-112 88
- Terminal Program Settings 91
- 0810-070 92
- List of Serial Commands 94
- Serial Line 96
- FTIME and FDATE 97
- General Settings 98
- Using Display/Keypad 101
- Using Serial Line 102
- Date and Time 103
- User Port Serial Settings 104
- Data Filtering 106
- Device Information 107
- Data Recording 111
- Analog Output Settings 114
- 0503-045 115
- AMODE/ASEL 117
- Analog Output Tests 118
- Operation of Relays 120
- Hysteresis 121
- 0610-077 123
- Networking Commands 127
- Sensor Functions 130
- Sensor Purge 131
- Manual Sensor Purge 132
- Interval Purge 132
- Power-up Purge 133
- Sensor Warming 134
- MAINTENANCE 135
- Error States 136
- Table 30 Error Messages 137
- Technical Support 138
- Return Instructions 138
- Vaisala Service Centers 139
- CALIBRATION AND ADJUSTMENT 141
- Adjustment Information 143
- Adjusting Dewpoint T 144
- 0706-020 145
- 0706-021 145
- 0706-022 145
- 0706-023 145
- 0706-024 147
- 0706-025 147
- 0706-026 147
- Adjusting Temperature 149
- Adjusting Analog Outputs 151
- TECHNICAL DATA 153
- Operating Environment 154
- Inputs and Outputs 154
- Mechanics 155
- Probe Specifications 155
- Modules 156
- RS-485 Module 157
- LAN Interface Module 157
- WLAN Interface Module 157
- Data Logger Module 157
- Options and Accessories 158
- Dimensions (mm/inch) 160
- 0804-035 161
- 0506-034 161
- 0804-129 163
- 0704-054 163
- CALCULATION FORMULAS 165
- 68.216 166
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