Vaisala PTU300 - Manual (Page 7)

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VAISALA _________________________________________________________________________ 5
Chemical Purge in Power Up ....................................... 142
Starting and Configuring Chemical Purge ......................... 142
Using Buttons On Motherboard ................................... 142
Using Display/Keypad (Optional) ................................. 143
Using Serial Line .......................................................... 143
PURGE ................................................................... 143
PUR......................................................................... 144
RGLIMIT ................................................................. 145
Setting Sensor Heating ..................................................... 145
Setting Humidity Sensor Heating using Display/Keypad
..................................................................................... 146
Using Serial Line .......................................................... 146
XHEAT .................................................................... 146
CHAPTER 5
MODBUS .................................................................................................... 147
Overview of Modbus Protocol Support .............................. 147
Taking Modbus into Use ................................................... 148
Enabling Serial Modbus....................................................... 149
Using Display/Keypad (Optional) ...................................... 149
Using Serial Line ............................................................... 149
Enabling Ethernet Modbus .................................................. 150
Using Display/Keypad (Optional) ...................................... 150
Using Serial Line ............................................................... 152
Diagnostic Modbus Counters ............................................. 153
Viewing Counters using Display/Keypad .......................... 153
Viewing Counters using Service Port ................................ 153
Disabling Modbus ................................................................ 154
CHAPTER 6
MAINTENANCE ......................................................................................... 155
Periodic Maintenance .......................................................... 155
Cleaning ............................................................................ 155
Changing the Probe Filter ................................................. 155
Changing the Sensor ........................................................... 156
Error States ....................................................................... 157
Technical Support ................................................................ 159
Product Returns ................................................................... 159
CHAPTER 7
CALIBRATION AND ADJUSTMENT ......................................................... 161
Pressure ................................................................................ 161
Opening and Closing the Adjustment Mode ..................... 162
Pressure Adjustment ........................................................... 163
One-Point Adjustment Using Display/Keypad ................... 163
One-Point Adjustment using Serial Line ........................... 164
LCI........................................................................... 164
LC............................................................................ 164
MPCI ....................................................................... 165
MPC ........................................................................ 166