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Vaisala Drycap DMT142 Transmitter Manuals
Manuals and User Guides for Vaisala Drycap DMT142 Transmitter. We have
1
Vaisala Drycap DMT142 Transmitter manual available for free PDF download: User Manual
Vaisala Drycap DMT142 User Manual (50 pages)
Dewpoint Transmitter
Brand:
Vaisala
| Category:
Transmitter
| Size: 0.52 MB
Table of Contents
Chapter 1 General Information
7
Table of Contents
3
About this Manual
7
Contents of this Manual
7
Version Information
8
Related Manuals
8
General Safety Considerations
9
Feedback
9
Product Related Safety Precautions
9
Recycling
10
Regulatory Compliances
10
Electromagnetic Compatibility
10
Trademarks
10
Warranty
11
Vaisala
11
Chapter 2 Product Overview
13
Introduction to Dewpoint Transmitter DMT142
13
The Basic Features and Options
13
Vaisala
13
Figure 1 Dewpoint Transmitter DMT142 Components
14
Chapter 3 Functional Description
15
Advanced DRYCAP Technology
15
Auto-Calibration
15
Sensor Purge
16
Sensor Warming in High Humidities
16
Table 1 Manual Revisions
16
Table 2 Related Manuals
16
Chapter 4 Installation
17
Selecting Location
17
Figure 2 Mounting Dewpoint Transmitter DMT142
18
Wiring
19
Figure 3 Wiring of Voltage Output Version
19
Figure 4 Wiring of Current Output Version
19
Table 3 Wiring Table
19
Figure 5 Pin Order of DMT142 Connector (Transmitter Side)
20
Optional Connection Cable
20
Table 4 Description of DMT142 Connection Cable
20
Figure 6 Snap-On Type Cable
21
Figure 7 Screw Fitting Type Cable
21
Power Supply Requirements
21
Figure 8 Example of Sensor Purge Current (at Room Temperature with 24 VDC)
22
Figure 9 Example of Auto-Calibration Current (at Room Temperature with 24 VDC)
22
Mounting
23
Direct Measurement in Process Pipeline
23
Figure 10 DMT142 Installed Directly to Pipeline
23
Sampling from Pressurized Processes
24
DMT242SC Sampling Cell
24
Figure 11 DMT242SC Sampling Cell
24
DMT242SC2 Sampling Cell with Swagelok Connectors
25
DSC74 Sampling Cell with Quick Connector and Leak Screw
25
Figure 12 DMT242SC2 Sampling Cell with Swagelok Connectors
25
Figure 13 DSC74 Sampling Cell with Accessories
26
DSC74B Two-Pressure Sampling Cell
27
Figure 14 DSC74B
27
Figure 15 Removing the Leak Screw
27
DSC74C Two-Pressure Sampling Cell with Coil
28
Figure 16 Default Assembly of DSC74C
28
Figure 17 Alternative Assembly of DSC74C (for Tight Spaces)
29
DM240FA Duct Installation Flange
30
Figure 18 DM240FA with DMT142
30
Chapter 5 Serial Commands
31
Connecting Serial Interface
31
Table 5 DMT142 Serial Interface Setting
31
Commands for Basic Settings
32
Select Nonmetric Unit
32
Select Metric Unit
32
Scale Dewpoint Analog Output
32
Select Analog Output Quantity
32
Set Analog Output Mode
33
DMT142 Firmware Version Output
33
Pressure Compensation
34
Table 6 Pressure Conversion Coefficients
34
Test Analog Output Current
35
Test Analog Voltage Output
35
Restart Program
35
Serial Line Output Commands
36
Start Measurement Output
36
Stop Measurement Output
36
Set Output Interval
36
Polling Mode for DMT142 Transmitter
37
Set Transmitter Address
37
Set Serial Interface Mode
37
OPEN Opening the Transmitter in POLL-State
38
SEND Outputting a Reading Once
38
Chapter 6 Maintenance
39
Calibration and Adjustment
39
Filter Change
39
Vaisala Service Centers
40
Chapter 7 Troubleshooting
41
Error States
41
Technical Support
41
Chapter 8 Technical Data
43
Specifications
43
Table 7 Measured Variable
43
Figure 19 DMT142 Dewpoint Measurement Accuracy Graph
44
Table 8 Operating Environment Specifications
44
Table 9 Output Specifications
44
Table 10 General Specifications
45
Spare Parts and Accessories
46
Dimensions in MM (Inches)
47
Wiring Quick Reference
47
Figure 20 DMT142 Dimensions
47
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