3-4
Brooks
®
Models 0152/0154
Section 3 Operation
Installation and Operation Manual
X-SE-0152-0154-eng
Part Number: 541C052AAG
March, 2008
3-5 Changing the Setpoint Value
If the setpoint value of a certain channel has to be changed, this channel
has to be selected by the channel selection key first. After pushing one of
the
up and down
keys, the display read-out of that channel changes from
flow reading to the setpoint value.
If no other key is pressed within approximately 5 seconds, the display read-
out falls back into flow reading (no changes are made). If one of the up or
down keys is pressed several times, or held for a longer time, the setpoint
value changes. This change of setpoint value will be activated after
pressing the “Enter” key. The new setpoint will now be sent to the (liquid or
gas) MFC. The double arrow up / down keys change the setpoint in steps
of 2% of full scale. The single arrow up and down keys change the setpoint
in steps of 0.1% of full scale.
The setpoint after power up is determined in the “Setpoint at power up”
menu which is explained in Section 3-9.
3-6 Using the Blending Mode
In the blending mode, the setpoint of the blended channel depends on the
flow value of a master channel. All channels can be programmed to follow
any other (master) channel.
After pressing the
blending
key, a “B” appears on the display of the active
channel.
Behind the “B” a number is displayed. This number denotes the master
channel to which the current active channel will be related. A “0” denotes
that no blending on the current channel is required.
The “master” channel can be changed by using the up and down keys. If
the correct “master” has been selected, the “Enter” key must be pressed to
confirm this new situation. By doing this, the setting is memorized. When
the system is powered up again, the memorized blending configuration will
