Ametek CEM/Humox, User Manual

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Controller/User Interface
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4-17

Define analog output range as 0 to 20 mA or 4 to 20 mA (Set Current Mode).

Define what type of information the analog output should track (Select Func -
tion). Choices are percent moisture, oxygen (dry or wet), cell temperature (wet
or dry), cell millivolts (wet or dry), and thermocouple millivolts (wet or dry).

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 Current 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.
Enter a Password
System passwords are created using the Setup key. Please see the “Setup
Key” Chapter for information on defining or disabling a system
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
4% 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 % Moisture
% O
2
(wet or dry)
Cell temperature (wet or dry)
Cell Millivolts (wet or dry)
Thermocouple Millivolts (wet or dry)