Vaisala DM70 - Manual (Page 47)

Chapter 6 ____________________________________ Field Calibration Check of Fixed Transmitters
1. Connect the cable between DMP248 (connector X5,
6-pin connector on the left of the motherboard) and DM70
(connector I or II). Turn on both the devices.
2. Open the menu by pressing Open.
3. Select Functions and press .
4. Select Calibrate transmitters and press .
5. Select 1. Baud rate and 2.Serial format. To change the serial
settings, press Set. The serial settings of DMP248 and DM70
must be the same. As a default, the DMP248 serial settings are
4800 bps, 7 Even.
6. Select 3. Start calibration and press
Start. If the serial settings of DM70 are not compatible with
the settings of DM248, or the cable connection is not working,
the following message appears:
0405-007
Figure 19 Calibrate Transmitters Message
Check that the serial settings of DMP248 and the settings of
DM70 are the same. Check the cable connection. Then retry
from step 6.
7. After the connection has been established, press
OK.
8. Select the quantity to check (T
d
or T) and press
Select.
9. Check the environment settings of the DM70 probe, if needed.
Press Yes or No.
10. The measurement value of DMP248 is shown on the upper row
and the value of DM70 on the second row. The third row shows
the difference between the measurements of DMP248 and
DM70.
VAISALA _______________________________________________________________________ 45