Chapter 3 Operation
Sierra 240/241 Series Instruction Manual
3-10
IM-240
Totalizer #1 Menu
Password
ENTER
Use
keys to access menus
Totalizer
Menu
Totaling
Inactive
Mass
Volume
ENTER
Run Mode
(unit) / Pulse
xxxx
Reset Total ?
YES or NO
Example:
Maximum flow rate = 600 gallons per minute
(600 gallons per minute = 10 gallons per second)
If unit per pulse is set to 600 gallons per pulse,
the totalizer will pulse once every minute.
If unit per pulse is set to 10 gallons per pulse,
the totalizer will pulse once every second.
Energy
Use the Totalizer Menu to configure and monitor the totalizer. The totalizer output is a 50 millisecond
(.05 second) positive pulse (relay closed for 50 milliseconds). The totalizer cannot operate faster than
one pulse every 100 millisecond (.1 second). A good rule to follow is to set the unit per pulse value
equal to the maximum flow in the same units per second. This will limit the pulse to no faster than
one pulse every second.
Example for Setting the Totalizer
The following shows how to set the totalizer to track mass flow in kg/sec. (All outputs are disabled while using
the Setup Menus.)
First, set the desired units of measurement:
1.
Use
keys to move to the Units Menu (see to page 3-12).
2.
Press
key until Mass Flow Unit appears. Press
ENTER
.
3.
Press
key until kg appears in the numerator. Press
key to move the underline cursor to the
denominator. Press the
key until sec appears in the denominator. Press
ENTER
to select.
4.
Press
key until Units Menu appears.
Second, set the pulse output:
1.
Use
keys to move to the Totalizer Menu.
2.
Press the
key until Totaling appears.
3.
Press
ENTER
and press the
key to select Mass. Press
ENTER
.
4.
Press
key to set the pulse output in the units you have selected for mass flow of kg/sec. Press
ENTER
and use
keys to set the pulse value equal to the maximum flow in the same units per
second. Press
ENTER
.
5.
To reset the totalizer, press
key until Reset Total? appears. Press
ENTER
and the
key to reset the
totalizer if desired. Press
ENTER.
6.
Press the
EXIT
key and answer
YES
to permanently save your changes.
Содержание INNOVA-MASS 240-VT
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