Ametek Thermox Series 2000 WDG-IV, Руководство пользователя

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Controller / User Interface | 4-15
Analog Output Port
Before you can define any Analog Range key functions, you must
choose whether they will apply to analog output ports 1 or 2 on the
rear of the control unit. If you have the combustibles option, you can
also use analog output ports 3 and 4.
Analog output port 1 is labeled I OUT 1 ; analog output port 2 is labeled I
OUT 2 . If you have the combustibles card option, analog output port 3 is
labeled IOUT3 and analog output port 4 is labeled IOUT4 . Analog output
ports 3 and 4 can only be used for combustibles or methane sensor options.
Selecting an analog output port
1. Select the Analog Range key.
2. Select Current Output #1 or Current Output # 2 . If you have the
combustibles option, you can also select Current Output # 3 or Cur-
rent Output # 4 .
You can then select any of the menu options described in the remainder of
this chapter, and they will apply to the analog output port you selected.
Set Current Range
Define the range of readings that the 0-to-20 or 4-to-20 mA output will
represent. You can also choose to set a reverse analog output range. For
example, 0 mA can correspond to the high end of the oxygen range, and
20 mA can correspond to the low end of the oxygen range.
The range of readings the current output represents is also a function of
the type of process readings the analog output port tracks (see the “Select
Function” section later in this chapter for the types of readings the current
output can represent).
See the “Set Current Mode” section for help on choosing either a 0-to-
20 mA or 4-to-20 mA scale.
Setting the current range
1. Select an analog output port.
2. From the Analog Range key menu, select Set Current Range .
NOTE
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NOTE
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