4-20 | Thermox TM2000 Oxygen Analyzer
(Select Function). Choices are O
2
readings, cell temperature, cell mil-
livolts, and thermocouple millivolts.
Once you select what type of process readings the analog output
should track using the Select Function menu option, decide what
range of these readings the analog output range will cover (Set Cur-
rent Range).
Decide whether to enable output filtering, and if enabled, how much
to smooth out abrupt changes in readings (Output Filtering).
Analog Range Key menu options are presented in the order in which
they appear on your control unit screen, from top to bottom. Figure 4-5
provides an overview of the functions covered by each Analog Range Key
menu option.
Figure 4-5.
Overview of Analog
Range Key functions.
ANALOG KEY
MENU OPTIONS
FUNCTIONS/OPTIONS
Set Current Range Range of readings that the analog output represents
(for example: 4% O
2
= 4 mA; 10% O
2
= 20 mA).
Set Track/Hold Hold output at last process reading during a cal or
verify
Set Current Mode 0 to 20 mA
4 to 20 mA
Output Filtering Smooth out variations in readings
Select Function
O
2
Cell Temperature
Cell Millivolts
Thermocouple Millivots
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