Vaisala DPT145 User's Guide download pdf (Page 55)

Chapter 8 _____________________________________________________________ Technical Data

VAISALA ________________________________________________________________________ 55

1107-032

Figure 12 DPT145 Dewpoint Measurement Accuracy

Table 15 Operating Environment

Property

Description / Value

Operating temperature of electronics

-40 … +60 °C (-40 ... +140 °F)

Pressure

0 … 50 bar (0…725 psi)

Relative humidity

0 ... 100 %

Measured gases

mixture

Table 16 Outputs

Property

Description / Value

Digital output

RS-485, non-isolated, Vaisala protocol

Connector

4-pin M8

0 20

10 30

0 5

0 6

Dew

int

mpera

ture (°

Temperature of meas

s (°C)

-40 -30 -20 -10 7

0 8

-4

-50

-60

Not recommended for

ontinuous measurement

Dewpoint measurement low limit

-70

Accurac

t s

Accurac

3 °

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 61 62 63

USER'S GUIDE 1
Table of Contents 3
CHAPTER 5 4
CHAPTER 6 4
CHAPTER 7 5
CHAPTER 8 5
APPENDIX A 5
List of Figures 6
List of Tables 6
GENERAL INFORMATION 7
Version Information 8
Related Manuals 8
Documentation Conventions 8
Recycling 10
Regulatory Compliances 11
Patent Notice 11
Trademarks 11
Software License 12
Warranty 12
PRODUCT OVERVIEW 13
Basic Features and Options 14
Transmitter Parts 15
Weather Shield 16
FUNCTIONAL DESCRIPTION 17
Sensor Technology 18
BAROCAP® Technology 19
DPT145 Start-up Sequence 20
INSTALLATION 21
Selecting the Location 22
CAUTION 23
Standard Wiring 28
Installation 29
OPERATION 30
Serial Communication 31
List of Serial Commands 33
Device Information 34
Show Currently Active Errors 35
Show Command List 35
Serial Line Output Commands 36
Set Output Interval 37
Output a Reading Once 37
Set Mixing Ratio 38
Select Unit 41
Set Serial Line Settings 42
Set Transmitter Address 42
Other Commands 43
Show Transmitter Uptime 44
Reset Transmitter 44
Restore Factory Settings 44
Modbus Communication 45
MAINTENANCE 47
1108-039 48
TROUBLESHOOTING 50
Error Messages 51
Unknown Serial Settings 52
Technical Support 52
Product Returns 53
TECHNICAL DATA 54
Table 16 Outputs 55
Table 17 General 56
Spare Parts and Accessories 57
Dimensions in mm 57
1311-249 58
1108-018 58
MODBUS REFERENCE 60
Modbus Register Map 61
*M211371EN* 63

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