Ametek TM2000 Pro, User Manual, Page: 69 / 148

Controller / User Interface | 4-21
set Current range option
Defines the range of readings that the 0-to-20 or 4-to-20 mA (milliamp) out -
put will represent.
You can also choose to set a reverse analog output range, so 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.
setting the current range
After selecting an analog output port, set the range of readings that the selected
current output represents as follows:
1. From the Analog Range Key menu, select Set Current Range .
2. If tracking oxygen, select whether you want to enter the 20 mA value using a
percent or PPM range.
3. Define the new value to correspond to the 20 mA analog output:
where y is the analog output port, and xx is the present value that the current
output represents (for example, 10 % O
2
).
4. If tracking oxygen, select whether you want to enter the 0 or 4 mA value us‑
ing a percent or PPM range.
Define the new value to correspond to the 0 or 4 mA analog output:
where y is the analog output port and xx is the value that the current output cur‑
rently represents.
Out # y 20 ma = xx
New Value?
Out # y 4 ma = xx
New Value?
See the Select Function
section later in this chapter
for the types of readings the
current output can represent.