Vaisala HMT140 Guide de l'utilisateur télécharger pdf (Page 27)

Wiring Diagrams

M21488EN-C 19

Installing the entire probe in the measurement environment

prevents heat conduction to the sensor, and is the

recommended installation method.

Figure 8: Optional Probe Mounting Clamp

CAUTION: Attaching the probe mounting clamp to a con-

ductive wall material should be avoided, since

the potential galvanic connection to the power

supplies and uncontrolled earth current loops

could cause measurement errors or even dam-

age to an HMT140 transmitter (not the HMT141).

Wiring Diagrams

The following figures outline the components, wiring and

connections of the HMT140.

Figure 9: HMT140 Components Diagram

1 2 ... 22 23 24 25 26 27 28 29 30 31 32 ... 75 76

USER'S GUIDE 1
Copyright 3
Trademarks 3
Technical Support 3
Contents 5
M211488EN-C iii 7
GENERAL INFORMATION 9
Getting Help 10
Batteries 11
ESD Protection 11
License Agreement 12
Warranty 12
Regulatory Compliances 13
6 VAISALA 14
PRODUCT OVERVIEW 15
Introduction to the HMT140 16
Fixed or Remote Probe 17
Interchangeable Probe 17
Transmitter Components 18
Installation Kit 19
12 VAISALA 20
INSTALLATION 21
Mounting 22
Duct Installation 23
1 Tension screw 24
M21488EN-C 17 25
Optional Mounting Accessories 26
Wiring Diagrams 27
Figure 10: RTD Wiring Diagram 28
M21488EN-C 21 29
22 VAISALA 30
SETUP AND OPERATION 31
Connecting to your Network 32
Set up the HMT140 33
26 VAISALA 34
Setup Consideration 35
Custom Settings 36
M211488EN-C 29 37
30 VAISALA 38
Modify HMT140 Description 39
Check Transmission status 39
32 VAISALA 40
HMT140 Function Modes 41
Transmission of Data 42
Transmit Attempts 42
Additional Settings 43
Battery Usage 44
Units and Temperature 45
Connection Performance 46
Advanced Options 47
40 VAISALA 48
Passwords 49
Set Up a New Channel 50
Find Additional Networks 50
Test Network Connectivity 51
Additional Program Parameters 52
MAINTENANCE 53
Fixed and Remote Probe Models 54
Fixed Probe Model 54
Remote Probe Model 55
Calibration and Adjustment 56
Battery Replacement 57
50 VAISALA 58
SPECIFICATIONS AND 59
TROUBLESHOOTING 59
54 VAISALA 62
HMT140 User’s Guide 55 63
Troubleshooting 66
Indicator Lights 67
Access Points 67
Transmitter Cycle 67
60 VAISALA 68
HMT140 User’s Guide 61 69
62 VAISALA 70
HMT140 User’s Guide 63 71
Workaround: 72
HMT140 User’s Guide 65 73
66 VAISALA 74
HMT140 User’s Guide 67 75
*M211488EN* 76

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Vaisala HMT140 Guide de l'utilisateur Page 27

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