Vaisala DRYCAP DMT346 Guide de l'utilisateur Page 33
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Chapter 3 ________________________________________________________________ Installation
VAISALA________________________________________________________________________ 31
Description of the Cooling Set
304
164 112.5
158
27.5
ø20
125
ø105
ø118
ø28
120
40.6
mounting
flan
g
e
sintered
filter
ø88.9
(fixed on top of
the cooling set)
cooling element
cooling fins
Figure 18 Cooling Set Dimensions in mm
The cooling set consists of a cooling element and removable cooling
fins. The cooling fins are meant to be installed in applications where
the process temperature and dewpoint are continuously in the range
indicated in Figure 19 on page 32 (Measurement Ranges for Using
and Not Using the Cooling Fins). However, if there is a possibility
that the dewpoint is above this range, the measurements have to be
taken without the cooling fins in order to avoid condensation. The
flow rate and ambient temperature have an effect on the cooling rate.
In Figure 19, it is assumed that ambient temperature is +25 °C. When
ambient temperature is raised by +10 °C, the measurement ranges
with and without cooling fins rise approximately +6 °C.
Correspondingly, every -10 °C change in ambient temperature
changes the ranges by approximately -6 °C. It is recommended that
after installing the transmitter without the cooling fins, the transmitter
is allowed to stabilize and then the SSR reading is checked either from
the local display or with a terminal connected to an RS line. If the
SSR reading is below 20 %, it is recommended that the cooling fins
are installed.
NOTE
Make sure that the upper limit of the dewpoint measurement range is
not exceeded in low temperatures as this would lead to condensation.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 5 6
- CHAPTER 6 6
- List of Figures 7
- List of Tables 8
- GENERAL INFORMATION 11
- Version Information 12
- Related Manuals 12
- WARNING 13
- CAUTION 13
- ESD Protection 14
- Recycling 14
- Feedback 14
- Trademarks 15
- License Agreement 15
- Warranty 16
- PRODUCT OVERVIEW 17
- Basic Features and Options 19
- Operating Principle 19
- Parts Description 20
- Transmitter Body 20
- 0604-006 21
- Probes and Cooling Set 22
- INSTALLATION 23
- 0604-008 24
- 0604-009 25
- 0604-010 25
- 0604-011 26
- 0604-012 27
- Kit for Pole or Pipeline 28
- Mounting Rain Shield with 29
- Installation Kit 29
- Panel Mounting Frame 30
- DMT345 Probe Mounting 31
- Installation with Flange 31
- 0604-020 32
- Parts of the Cooling Set 34
- Mounting Instructions 35
- 0604-024 36
- 0604-025 37
- Cable Bushings 38
- Cable Grounding 39
- Connections to 24 VAC Power 42
- Power Supply Module 43
- Installation 44
- Warnings 45
- Alarm Relays 48
- RS-422/485 Interface 50
- 1 (not connected) RxB 51
- 2 (not connected) RxA 51
- 4 B TxB 51
- 5 A TxA 51
- RS-485 master Data DMT346 52
- 8-Pin Connector 54
- OPERATION 55
- Basic Display 56
- Graphic History 57
- Menus and Navigation 58
- Display Backlight Setting 59
- Changing Language Setting 59
- Rounding Setting 59
- Display Contrast Setting 60
- Keypad Lock (Keyguard) 60
- Menu PIN Lock 60
- Factory Settings 61
- Serial Line Communication 62
- User Port Connection 63
- Service Port Connection 63
- Terminal Program Settings 64
- DMT346/2.01 65
- List of Serial Commands 66
- Table 22 Other Commands 67
- Getting Measurement Message 68
- FTIME and FDATE 69
- Resetting the Device 71
- Keypad/Menu Locks 71
- General Settings 72
- Modifier Description 73
- Using Buttons on Motherboard 76
- User Port Serial Settings 77
- >SERI 600 N 8 1 78
- 600 N 8 1 78
- Mode Output Commands used 79
- SEND [addr] 79
- >INTV 10 min 79
- Output intrv. : 10 min 79
- OFF No filtering 80
- Device Information 81
- Data Recording 83
- Selecting Data Recording 83
- Quantities 83
- View Recorded Data 84
- Deleting Recorded Files 87
- Analog Output Settings 87
- 0503-045 88
- Analog Output Quantities 89
- AMODE/ASEL 90
- Analog Output Tests 91
- Setting 92
- Relay Operation 93
- Quantity for Relay Output 93
- Relay Setpoints 93
- Hysteresis 94
- Enabling/Disabling Relays 95
- Indication Led Operation 95
- Setting Relay Outputs 95
- 0605-040 96
- Testing Operation of Relays 98
- RS-485 Module Operation 99
- OPEN [nn] 101
- Sensor Functions 102
- AutoCal 102
- Automatic AutoCal 103
- Manual AutoCal 103
- Sensor Purge 104
- Power-Up Purge 105
- Manual Sensor Purge 105
- Interval Purge 105
- 0504-051 106
- Sensor Warming 107
- CALIBRATION AND ADJUSTMENT 109
- Adjustment Information 111
- Using Display/Keypad 112
- Using Serial Line 113
- >a01 117
- Wait for Purge data...OK 117
- Adjusting Temperature 118
- Adjusting Temperature Using 118
- Display/Keypad 118
- Adjusting Analog Outputs 120
- Serial Line 121
- MAINTENANCE 123
- Error States 124
- Error Message Action 125
- Technical Support 126
- Return Instructions 126
- Vaisala Service Centers 127
- TECHNICAL DATA 129
- 0605-043 130
- Property Description / Value 131
- Models) 132
- Options and Accessories 133
- Technical Specifications of 133
- Optional Modules 133
- Description Specification 134
- Dimensions in mm (inches) 135
- Spare Parts 136
- APPENDIX A 137
- CALCULATION FORMULAS 141
- 99.621 ⋅= 142
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