Owner's manual
Table Of Contents
- DMT345/346 USER'S GUIDE
- TABLE OF CONTENTS
- GENERAL INFORMATION
- PRODUCT OVERVIEW
- INSTALLATION
- OPERATION
- Getting Started
- Display/Keypad
- MI70 Link Program for Data Handling
- Serial Line Communication
- LAN Communication
- Communicating with a Transmitter in POLL Mode
- General Settings
- Serial Output Settings
- Data Recording
- Analog Output Settings
- Operation of Relays
- Sensor Functions
- MODBUS
- MAINTENANCE
- CALIBRATION AND ADJUSTMENT
- TECHNICAL DATA
- EXAMPLE INSTALLATION OF DMT346
- CALCULATION FORMULAS
- MODBUS REFERENCE
Chapter 7 ___________________________________________________ Calibration and Adjustment
VAISALA _______________________________________________________________________ 157
Adjusting Temperature
NOTE
Temperature
adjustment in process conditions is possible only with
DMT345. Temperature adjustment of DMT346 cannot be performed in
process conditions as the DMT346 measures a cooled temperature
whereas the reference instrument measures the actual process
temperature.
Adjusting Temperature Using
Display/Keypad
Use preferably the display/keypad to adjust the temperature.
1. Press the ADJ button on the motherboard to open the
ADJUSTMENT MENU.
2. Press the ► arrow button to select Adjust T measurement.
3. Select by pressing 1-point or 2-point adjustment. Press START
to start adjusting.
4. Remove the filter from the probe and insert the probe into a
reference temperature.
5. Wait at least 30 minutes for the sensor to stabilize. Follow the
stabilization from the GRAPH display.
6. Press READY when stabilized. Enter the reference temperature
using the arrow buttons.
When carrying out the two-point adjustment proceed to the next
adjustment point and carry out the procedure as described in the
previous steps. Note that the difference between the two
temperature references must be at least 30 ºC.
7. Press OK. Press YES to confirm the adjustment.
8. Press OK to return to the adjustment menu.
9. Press EXIT to return to the basic display.