Vaisala MI, Инструкция по эксплуатации

Страница: 72 / 92

64
MI instruction manual
Document/Revision No. IM-EN-MI /2.00 Effective: September 2, 2019
Tap to save all settings
Tap for test page
Change I/O 1
parameters
Clear I/O 1
settings
Figure 6.16 General I/O module card configuration
Parameters LIMIT and HYSTERESIS are used to switch the digital output based on con-
centration or temperature measurement values by the functions CONC - HIGH LIMIT,
CONC - LOW LIMIT, T - HIGH LIMIT and T - LOW LIMIT. Switching on high limit activates
when the measured value exceeds HIGH LIMIT + HYSTERESIS. The output switches off
on high limit when the measured value goes below HIGH LIMIT - HYSTERESIS. Respec-
tively, switching on low limit activates when the measured value goes below LOW LIMIT
- HYSTERESIS. The output switches off on low limit when the measured value exceeds
LOW LIMIT + HYSTERESIS.
Important: When you have chosen the settings for the inputs or outputs, tap
DONE
to
save changes and exit the setup.
6.5.2.1 Using the general I/O module to trigger prism wash
Prism wash can be started by configuring the general input for external wash request.
To activate the wash system a relay must be configured to be a wash relay. Select the
wash function on the relay display, see figure 6.6. To configure the general input, select
the function "IN: EXT WASH" on the I/O module display.