Vaisala DMP248 Manuel de service Page 53
- Page / 145
- Table des matières
- MARQUE LIVRES
Noté. / 5. Basé sur avis des utilisateurs
CHAPTER 5________________________________________________________________ COMMANDS
VAISALA _________________________________________________________________________ 47
The 0D[G7GS parameter defines the maximum allowed change of the
dewpoint value during the pre-defined G7GS time. If the change in
dewpoint value exceeds the limit, the calibration is not started. The
auto-calibration is done only after process is stabilized. The
transmitter retries untill the calibration is succesfully complited. Note
that normally, this parameter does not have to be changed.
The G7GSWLPH defines the measuring time of the change in dewpoint
prior to the auto-calibration (see the parameter 0D[G7GS.
The Max corr. parameter defines the maximum correction (%RH) the
transmitter does during each auto-calibration cycle.
The 6HWWO WLPH defines the time the output values prior to the auto-
calibration are frozen after the calibration. The time is for sensor
temperature stabilization.
NOTE
Normally, the Max dTdp and the Max corr. parameters need not be
changed.
NOTE
Auto-calibration takes place only when the security lock jumper is
connected. With command <fst on>, the serial line printing indicates
the stages of the auto-calibration (n = no auto-calibration, w,h,s =
different phases in auto-calibration, S = settling time auto-calibration
is on).
DCAL<cr>
>dcal
Calibration...
any key to abort
> (appears when the auto-calibration
is completed in 60 - 70 seconds)
If you press any key, the calibration is interrupted. If no key is
pressed, the calibration takes place immediately. If the process is
unstable or relative humidity is over 10%, the prompt (>) appears
immediately. In that case the calibration is not performed. The
calibration is not performed again even if the maximum correction is
exceeded. (see Chapter Display/keypad commands)
- OPERATING 1
- Table of contents 3
- GENERAL INFORMATION 7
- PRODUCT DESCRIPTION 9
- FIGURE 2-2 shows the DRYCAP 11
- FIGURE 2-1. Now the RH 11
- Use in high pressure 12
- INSTALLATION 13
- PROBE UP 14
- DOWN 14
- Mounting; overview 15
- FIGURE 3-7 17
- R1/2 ISO 7/1 20
- VALVE OPEN 21
- PRESS TOOL 21
- VALVE CLOSED 21
- Sample cell 24
- SAMPLE CELL 25
- Grounding 27
- Connections 29
- Connection to an AC supply 30
- COMMISSIONING 31
- FIGURE 4-2 32
- RXWSXWVÕ6FDOH 33
- Spare jumpers 33
- COMMANDS 39
- LED commands 40
- Display/keypad commands 41
- Auto-calibration 42
- Forced auto-calibration 44
- Analogue output commands 44
- FIGURE 4-2) 45
- Output via serial bus 46
- Output modes 48
- Pressure compensation 50
- Setting the date 51
- Setting the time 51
- Serial commands 52
- Analogue outputs 55
- Output via the serial bus 56
- Outputting the reading once 57
- Serial bus settings 58
- Selecting the output units 58
- Resetting the transmitter 59
- Setting the serial interface 59
- OPEN & CLOSE 59
- 2 which is in POLL state 60
- CALIBRATION 61
- Using serial commands 62
- Using display/keypad commands 63
- Using LED commands 63
- Temperature calibration 65
- MAINTENANCE 73
- Adjustment using LED commands 75
- TECHNICAL DATA 79
- Temperature 80
- Relative humidity 80
- Electronics 82
- Serial interface modules 82
- Electromagnetic compatibility 83
- CHAPTER 9 OPTIONS 84
- SPARE PARTS AND 85
- ACCESSORIES 85
- APPENDIX 1 SERIAL COMMANDS 87
- Auto-calibration commands 89
- Calibration commands 93
- : 0.000 94
- FTIME Adding time to output 99
- FDATE Adding date to output 100
- SERI Serial bus settings 101
- Operation modes 103
- DATE Setting the date 106
- TIME Setting the time 107
- ?? <cr> 108
- APPENDIX 2 109
- Power supply module 110
- Technical specifications 111
- APPENDIX 3 113
- Installation 114
- Operation 114
- Network configuration 116
- RX GND TX 117
- Dual loop operation 118
- STOP mode 120
- POLL mode 121
- Specifications 122
- APPENDIX 4 123
- Dual loop wiring 129
- Current loop settings 131
- APPENDIX 5 133
- Errors after reset 134
- Errors during operation 135
- APPENDIX 6 137
- APPENDIX 7 139
- APPENDIX 8 145
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