Vaisala DRYCAP DMT340 SERIES Guide de l'utilisateur Page 144
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USER'S GUIDE____________________________________________________________________
144 _________________________________________________________________ M210704EN-E
Adjusting Dewpoint T
d/f
Before adjusting dewpoint, first carry out the two-point relative humidity
adjustment, which will ensure the basic adjustment level. After that,
continue with the actual T
d/f
adjustment.
Two-point Relative Humidity Adjustment
using Display/Keypad
For DMT340 M-sensor, the humidity references of 0 % (for example
Nitrogen) and 10 ... 20 % are required.
NOTE
For the DMT340 M-sensor both reference humidities must be below
20% RH.
To make the adjustment, follow the instructions below. Use preferably
the display keypad and let the display information guide you through the
two-point RH adjustment process.
1. Press the Adjustment button ADJ on the motherboard inside the
transmitter to enable adjustments.
2. Select Adjust Td measurement, press the ►arrow button.
3. Select 2-point RH adjustment, press Start. Press OK to perform
purge of point 1.
0706-018
Figure 74 Starting the Adjustment
0706-019
Figure 75 Performing Purge
- 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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