Vaisala DM500 - Manual (Page 79)

Chapter 14 _________________________________________________________ Output Interfaces
VAISALA _______________________________________________________________________ 77
WAIT: output is enabled when dewpoint measuring status is
WAIT
All the modes selected: output activity is not dependent on any
measurement status.
None of the modes selected (never): output is not enabled
(invalid output).
You can select any combination to control the output.
12. Select Invalid output to set the output reading when the output is
not enabled. Press SET (setting can be done also by using serial
line, see command AERR).
13. Press CLEAR and give the invalid value by using numerical
buttons. The value of the invalid output shall be 4...20 mA.
Press
OK .
14. Press EXIT to return to the main view.
15. Set the other outputs similarly.
Analog outputs can be configured also by using the serial line (see
command ASEL).
Relay Outputs (Optional)
The DMI500 user interface can be equipped with two configurable
single pole double throw relays. The maximum voltage connected to
relay terminals is 42 V DC/60 V Peak. Select the quantity, setpoints,
and hysteresis and set the criteria for enabling the function.
1. Open MENU : press .
2. Select ► Interfaces , press .
3. Select ► Relay outputs , press .
4. Select ► Relay 1 , press .
5. Select Quantity , press SET , select the quantity for the relay
output and press SELECT .
6. Select Active above: xx , press SET . Set the value above which you
want the relay to be activated. Use the numeric buttons. Press
OK .