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Chapter 6 ___________________________________________________Calibration and adjustment
VAISALA ______________________________________________________________________ 125
CHAPTER 6
CALIBRATION AND ADJUSTMENT
The PTU300 is fully calibrated and adjusted as shipped from factory.
Typical calibration interval is two years. Depending on the application
it may be good to make more frequent checks. Calibration must be
done always when there is a reason to believe that the device is not
within the accuracy specifications.
When defining the calibration interval the long term specifications and
the requirements of the customer must be taken into consideration.
Contact Vaisala Service Centers for details.
It is recommended that calibration and adjustment should be carried
out by Vaisala. See section Vaisala Service Centers on page 155.
Calibration and adjustment is carried out either by using the push-keys
on the motherboard, through the serial port or with the optional
display/keypad.
(Vaisala portable instruments HM70 and HMI41 can also be used).
Pressure
The user can select a simple offset or a two-point offset and gain
adjustment and use the LCI command for adjustment of pressure
transducer. The MPCI command is used for the more sophisticated
multipoint correction capability at up to eight pressure levels.
Check first what linear corrections the transmitter is currently using
before attempt to readjust the transducer. As the previous linear
corrections will disappear when new linear corrections are input, the
user has to take into account the previous linear corrections when
deciding about the new ones.
- USER'S GUIDE 1
- Table of Contents 3
- CHAPTER 5 6
- CHAPTER 6 6
- List of Figures 8
- List of Tables 9
- GENERAL INFORMATION 11
- Feedback 12
- ESD Protection 12
- Recycling 13
- Regulatory Compliances 13
- Trademarks 13
- License Agreement 13
- Warranty 14
- PRODUCT OVERVIEW 15
- Basic Features and Options 16
- Pressure Measurement 17
- 0601-008 18
- Probe Options 20
- Warmed Probe PTU307 21
- INSTALLATION 23
- Standard Mounting without 24
- Mounting Plate 24
- 0503-004 25
- 0503-040 25
- Kit for Pole or Pipeline 27
- 0503-041 28
- 0509-151 28
- Cable Bushings 30
- Grounding the Cables 31
- Alternate Wiring Systems 33
- WARNING 34
- 8-Pin Connector 35
- D-9 Connector 36
- CAUTION 37
- Probe Mounting 38
- 0507-024 39
- 0507-022 40
- Temperature Probe (Optional) 42
- Power Supply Module 43
- Installation 44
- Warnings 44
- 0506-030 47
- Relays 49
- RS-422/485 Interface 51
- 1 (not connected) RxB 52
- 2 (not connected) RxA 52
- 4 B TxB 52
- 5 A TxA 52
- OPERATION 55
- Basic Display 56
- Reading 57
- 0604-055 58
- Graphic History 60
- Information Display 61
- Menus and Navigation 62
- Language Setting 63
- Rounding Setting 63
- Display Backlight Setting 63
- Display Contrast Setting 64
- Keypad Lock (Keyguard) 64
- Menu PIN Lock 64
- Factory Settings 65
- Serial Line Communication 66
- User Port Connection 66
- Service Port Connection 67
- Terminal Program Settings 68
- 0601-029 69
- 0601-030 69
- List of Serial Commands 70
- Getting Measurement Message 73
- Setting time and date 75
- General Settings 75
- NMEA Data Format 79
- GPS Commands 81
- User Port Serial Settings 85
- Pressure Average Calculation 88
- Device Information 89
- Serial Line 92
- Locking Menu/Keypad by Using 92
- Data Recording 93
- Selecting Data Recording 93
- Quantities 93
- View Recorded Data 94
- Deleting the Recorded Files 96
- Analog Output Settings 96
- 0503-045 97
- AMODE/ASEL 99
- Analog Output Tests 100
- Setting 101
- Operation of Relays 102
- Quantity For Relay Output 102
- Hysteresis 103
- Enabling/Disabling Relays 105
- Setting Relay Outputs 106
- Testing Operation Of Relays 108
- Operation of RS-485 Module 109
- Networking Commands 110
- Sensor Functions 113
- Chemical Purge (Optional) 113
- Manual Chemical Purge 114
- Chemical Purge in Power Up 115
- Using Buttons On Motherboard 115
- Using Serial Line 116
- Setting Sensor Heating 117
- MAINTENANCE 121
- Changing the Sensor 122
- Error States 123
- Table 18 Error Messages 124
- CALIBRATION AND ADJUSTMENT 127
- 0508-013 128
- Relative Humidity Adjustment 132
- Using Push-Buttons 132
- Using Display/Keypad 133
- Temperature Adjustment 137
- TECHNICAL DATA 143
- Relative Humidity 144
- Optional Temperature Probe 145
- Calculated Variables 146
- 1013 mbar) 147
- Dewpoint Temperature (PTU307 148
- Warmed Probe Option) 148
- Inputs and Outputs 149
- Mechanics 149
- Technical Specifications of 150
- Optional Modules 150
- Relay Module 151
- RS-485 Module 151
- Options and Accessories 151
- Item code 152
- Dimensions (in mm and inch) 153
- 12 (0.47) 154
- 120 (4.72) 154
- Temperature Probe 155
- Technical Support 155
- Return Instructions 156
- Vaisala Service Centers 157
- PROBE INSTALLATION KITS AND 159
- INSTALLATION EXAMPLES 159
- PTU307) 160
- RH Probe Installation 161
- 0508-016 162
- 0508-018 164
- 0508-015 164
- 0507-015 167
- 0601-044 168
- CALCULATION FORMULAS 169
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