40
1
2
3
Figure 65. How to set the Deviation and Time Alarm.
In this example the following settings are displayed (valid only after the system has reached
its stationary state): if the
Gas Deviation
from Setpoint is 0.5% or greater (i.e. if Setpoint gas is 5.0% and the
composition reaches a value equal or less than 4.5% or equal or more than 5.5%) for a period of time equal or
longer than 10 minutes (
Gas Time
set in this example) then the system triggers an Alarm.
Tip
►
After any change in the Setpoint value the device enters into a transient regime.
9.2.2.6
Data Logging
CO2-O2-UNIT-BL [0-10; 0-1] touch screen interface, OKO-TOUCH (see Figure 2), is equipped with on-
board memory for data logging and storage. A simple routine allows downloading data to USB drive or to PC.
In order to log and then download the logged data, connect a USB drive (not supplied) to OKO-TOUCH,
using MINI-USB-OTG cable (provided), as shown in Figure 66.
USB Port
USB Drive
MINI-USB-OTG
OKO-TOUCH
Figure 66. USB drive connection.
To activate the logging, follow the steps indicated below:
1.
Press on
Settings
icon
(see Figure 67 a) and press on
Touch screen
icon
on the window that opens
next (see Figure 67 b).