BRONKHORST®
9.17.051
MASS-VIEW®
series
Page 17
3.4.4 Sleep mode
To increase the lifetime of the display a sleep mode is built-in which displays the flow at a random place
on the screen. The sleep mode will become active when the readout screen is visible and no button is
pressed for a number of minutes.
The screensaver and the delay can be enabled in the settings menu.
In addition to the sleep mode the display contrast can be adjusted in 5 steps in the settings menu.
3.4.5
Counter
The counter in the
MASS-VIEW
®
can be set up in the “counter” menu and has 3 different modes which
can be selected via the “mode” parameter in the “counter” menu:
1.
Off
: counter disabled.
2.
Up
: counting upwards continuously.
3.
Up to..
: counting up to limit (batch counter).
When the counter mode is set to “Up” or “Up to..” the following parameters will be displayed
Unit:
The output unit in which the counter will be displayed on the screen. (FlowDDE parameter
123 or 128).
Limit:
Batch limit. This parameter is only active when counter mode “Up to..” is selected.
Reset:
Resets the counter.
3.4.6
Alarms
The alarms can be adjusted in the Alarms menu using the following parameters:
Activate (FlowDDE parameter 118)
This parameter sets one of the following alarm modes.
Name:
DDE Value:
Description:
None
0
Alarms Off.
Min + max
1
Alarm on absolute limits.
Response
2
Alarm on limits related to setpoint/marker.
When the alarm mode is set to “None”, the other alarm parameters are not visible in the menu.
Set max / Set min (FlowDDE parameter 116 and 117)
The minimum and maximum alarm values can be set between 0% and 130%.
An alarm can be disabled by setting the value to 0%.
When alarm mode “min + max” is selected, these are absolute values, when “Response” is selected
these values are relative to the setpoint or marker value. This enables the user to create a band around
the setpoint/marker.
Delay (FlowDDE parameter 182)
The delay parameter is the time in seconds the alarm action will be delayed when alarm limit has been
exceeded. This is also the time automatic reset will be delayed when sensor signal reaches the desired
level again.
