Vaisala DMT143 - Manual (Page 36)

USER'S GUIDE ____________________________________________________________________
34 ___________________________________________________________________ M211435EN-E
Operation with DM70 Hand-Held Dewpoint
Meter
You can connect the DMT143 to the MI70 indicator (the measurement
display that is included in the DM70 package) using the MI70 connection
cable (order code 219980SP). This allows you to view and use the
measurement data with the MI70 indicator. You can, for example,
perform a field check of the measurement accuracy. For instructions, see
section Field Check Using the DM70 Hand-Held Dewpoint Meter on
page 61.
When connecting or disconnecting the MI70 indicator, always make sure
the MI70 indicator is powered off. Connecting or disconnecting the MI70
when it is powered on may cause incorrect values to be displayed.
If you have altered the serial port settings of the DMT143, always make
sure you switch off the other power supply (disconnect the “Analog”
cable if in use) before powering up the MI70 indicator.
Note that when the transmitter’s power supply is disconnected, it will
carry out the startup sequence when powered on again (see section
DMT143 Startup Sequence on page 17).
You can adjust the following DMT143 settings in the MI70
Measurement settings menu:
- Type of measured gas. The options are:
- 0 for air
- 1 for SF
6
- Transmitter address in POLL mode.
- Alarm LED dew point limit (not shown if dew point alarm is disabled
or LED is completely turned off).
- Offset correction for dew point measurement. The maximum offset
you can set is ±5 °C.
1203-051, 1203-052
Figure 20 Measurement Settings Menu