Vaisala HUMICAP HMT310 Guía de usuario Pagina 65
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Chapter 5 _______________________________________________________________ Maintenance
VAISALA ________________________________________________________________________ 65
CHAPTER 5
MAINTENANCE
This chapter provides information that is needed in basic maintenance of
the HMT310.
Periodic Maintenance
Calibration Interval
HMT310 is fully calibrated and adjusted as shipped from factory. Typical
calibration interval is one year. In certain applications it may be
advisable to do more frequent checks. Calibration needs to be done
always when there is reason to believe that the device is not within the
accuracy specifications.
You can carry out calibration and adjustment by yourself, or you can
send the transmitter to Vaisala Service Centers for recalibration. For
more information on calibration, see section Calibration and Adjustment
on page 69.
Replacing Consumables
Changing the Filter
Replace the filter if it is contaminated. New filters are available from
Vaisala; see section Spare Parts and Accessories on page 93.
CAUTION
Be careful when changing the filter, since it is easy to break the sensor
when the filter is removed.
CAUTION
If the transmitter is installed in a pressurized chamber, always make sure
that the pressure of the chamber is equalized with the ambient pressure
prior to removing the transmitter. When the transmitter is removed for
maintenance, cap the hole with a capp
ed nut. This way, the chamber can
be pressurized although the transmitter is not in place.
Plugs are available from Vaisala for ISO threaded connections.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 4 4
- CHAPTER 5 5
- CHAPTER 6 5
- CHAPTER 7 6
- APPENDIX A 6
- List of Figures 7
- List of Tables 8
- GENERAL INFORMATION 9
- Version Information 10
- Related Manuals 10
- Documentation Conventions 10
- ESD Protection 11
- Recycling 12
- Regulatory Compliances 12
- Trademarks 13
- Software License 13
- Warranty 13
- PRODUCT OVERVIEW 15
- Output Quantities 16
- HMT310 Transmitter Parts 17
- Probe Options 18
- Filter Options 19
- Sensor Options 19
- INSTALLATION 21
- Transmitter Unit 22
- 0507-035 23
- Mounting the Probes 25
- 0507-024 26
- 0507-040 28
- 0507-041 30
- CAUTION 32
- Connections 33
- Power Supply Requirements 34
- OPERATION 35
- USB Connection 37
- Indicator 38
- Terminal Program Settings 39
- List of Serial Commands 40
- Measurement Output 42
- Output Reading Once 43
- Set Serial Interface Mode 43
- Serial Line Settings 43
- Output Formatting 45
- Set Time and Date 47
- Outputs 47
- Commands) 49
- Other Commands 50
- Addresses 51
- List Commands 51
- Set Result Filtering 52
- Reset Transmitter 53
- Display Error Messages 53
- Set Analog Output Mode 54
- Scale Analog Outputs 55
- Test Analog Outputs 56
- Readings 56
- Chemical Purge (Optional) 57
- Output signal 58
- Set Chemical Purge Interval 59
- Chemical Purge in Powerup 60
- Sensor Heating (Optional) 61
- Sensor Heating ON/OFF 62
- Setting Heating Parameters 62
- Example: 63
- MAINTENANCE 65
- Changing the Sensor 66
- Technical Support 67
- Product Returns 67
- CALIBRATION AND ADJUSTMENT 69
- Sensor Change 71
- Set Calibration Date 72
- Analog Output Calibration 72
- (in Two Points) 73
- Low End Adjustment 74
- High End Adjustment 75
- One Point) 76
- MPC Command Syntax 78
- Starting MI70 Adjustment 81
- Adjusting RH with MI70 82
- Adjusting T with MI70 83
- 1-point T adjustment 84
- 2-point T adjustment 84
- Environment Settings 85
- Last Adjustment Date 85
- TECHNICAL DATA 87
- 0507-021 88
- Calculated Variables 90
- Dewpoint Temperature 92
- Spare Parts and Accessories 93
- Dimensions in mm (inches) 94
- Rain Shield Dimensions 95
- 120 (4.72) 96
- 12 (0.47) 96
- Figure 26 HMT314 Dimensions 97
- Figure 27 HMT315 Dimensions 97
- Figure 28 HMT317 Dimensions 98
- Figure 29 HMT318 Dimensions 98
- PROBE INSTALLATION KITS AND 99
- INSTALLATION EXAMPLES 99
- HMT317) 100
- Cable Gland 101
- 0508-027 102
- *M210619EN* 105
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