Concoa MEDICAL INTELLISWITCH 571 Series, Manual, Page: 13 / 28

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IntelliSwitch. This gives the user an opportunity to review and/or modify any value before the parameters
are permanently changed. The other buttons will be explained further along in this manual.
Pop-up messages are used throughout this screen to aid in setting parameters. Items 1-10 and buttons
“ZERO SET”, and “RESTORE DEFAULTS” have associated pop-up messages that will appear when the
mouse pointer is over them. The “SET” button and “UNDO” buttons will show pop-up messages after
they have been selected. Use these messages as guides to correctly set values on this screen.
Figure 7 and Table 2 describe the various parameters on the screen.
Table 2
Bullet Item Description
1 Switchover Pressure
This is a preset pressure in the IntelliSwitch used to determine
when an inlet can no longer provide enough gas pressure to the
delivery regulator. Data range: 50-500psi
2 Look Back
This is a preset time in minutes used for liquid cylinders to
determine when to look back at an inlet pressure to determine if
pressure has been restored above the switchover point. The
IntelliSwitch will look back at an inlet after the look back time has
expired to see if its pressure has built back up above the
switchover point. If it has, then the IntelliSwitch will switch back to
that side to try to use more of the gas. Data range: 10-60 min.
3 Switch back
A preset time in minutes used for liquid cylinders in conjunction
with the look back time. If the look back feature is invoked and
after time out has determine that it can switch back to a side
whose pressure has built back, a switch back timer will start. If the
inlet pressure on the same side drops again before the switchback
time has expired the IntelliSwitch determines that that side is truly
empty and will alarm and switch to the other inlet. Data range: 10-
60 min.
4 Hysteresis
This is a preset pressure value that is used to prevent the
IntelliSwitch from “dithering” at the switchover point. Data range:
10-50 psi.
5 Left Offset
This is a value that can be used to adjust the pressure transducer
reading for the left inlet. This value should only be changed if it is
necessary to recalibrate the transducer. Changing this value will
change the left inlet pressure reading. A (+) or (-) value may be
entered here. Refer to “Calibrating Transducers” section of the
IntelliSwitch user
’s manual. Data range: +/- 200 psi.
6 Right Offset
This is a value that can be used to adjust the pressure transducer
reading for the right inlet. This value should only be changed if it
is necessary to recalibrate the transducer. Changing this value
will change the right inlet pressure reading. A (+) or (-) value may
be entered here. Refer to “Calibrating Transducers” section of the
IntelliSwitch users manual. Data range: +/- 200 psi.
7 System ID
This is a number that can be assigned by the user to identify the
IntelliSwitch. Data range: 1-254.
8 GAS Type
Displays the gas type the IntelliSwitch is controlling. The pop-up
message will show the choices. The choices for gas type are
numbered. Enter the number next to the gas type in the text box.
The name of the gas will appear on the status screen next to units
of measure Data range:1-99 (refer to pop-up message for details)
9
Delivery Pressure
Tolerance
This is the variation in delivery regulator pressure that is allowed
before the IntelliSwitch switches regulators and alarms. The value
is +/- the pressure shown. Data range: 5-15psi.