Vaisala DM70 - Manual (Page 77)

Chapter 9 _______________________________________ Calibration, Adjustment, and Maintenance
Two-Point Adjustment
1. After selecting 2-point adjustment, press Select to
continue.
2. Set the probe to a lower reference temperature. You can follow
the stabilization from the graphical display by pressing
Graph. When the reading has stabilized, press Ready.
3. Use the arrow buttons to give the lower reference temperature
value and then press OK.
4. Set the probe to a higher reference temperature. You can follow
the stabilization from the graphical display by pressing
Graph. When the reading has stabilized, press Ready.
5. Use the arrow buttons to give the higher reference temperature
value and then press OK.
6. Confirm the adjustment by pressing Yes. (If you press
No, the adjustment mode display returns and no changes are
made.) The adjustment has been completed.
NOTE If the difference between the two references is less than
30 ˚C, the adjustment cannot be done.
7. To exit the adjustment mode, press Back.
8. To return to the basic display, press Exit.
Temperature Adjustment of
DMT340 Series Using DM70
DM70 can be used for making the temperature adjustment of
DMT340 series transmitters.
To make dewpoint adjustment of DMT340, follow the six first steps
below and then continue according to the chosen adjustment method:
1. Turn off DM70.
2. Connect the cable 211339 between DMT340 (service port) and
DM70 (connector I or II). Turn on both the devices.
3. Press the ADJ button on the DMT340 motherboard to enable the
adjustment mode.
VAISALA _______________________________________________________________________ 75