MIP LM 3086 SE/EPA3 manual, rev2
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16.10.2018
Page 33 / 105
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2.2.6.15
Auto-window
This function allows the user to perform a dirty window check during the calibration sequence, or to disable
it. If ON is selected, the unit will perform a window check between the zero and the span in the calibration
sequence. Obviously, the OFF selection will disable the window check. By using the OFF feature, the window
is still checked, but not sent to an analogue out channel. The # 1 analogue output (pins 11 and 12) will reflect
the window value when the Auto-window is turned on. There is not a separate contact closure for the
window cycle; in fact the window check shares the relay with the zero key. This could be a problem for a DCS
that relies on a contact closure to record the zero. It is recommended that if the DCS used relies on a contact
closure to flag calibrations, the window check is disabled. Pushing the window check button can, still perform
window checks. See paragraph 2.2.7.4 for special information concerning manual mode outputs, a feature
that controls the relay closures.
2.2.6.16
Audit Output
The audit output mode simply selects whether the audit values are outputted to both analogue out loops, or
only one. If Channel 1 is selected, only channel 1 (pins 11 and 12) will output the audit filters. Channel 1 and 2
will output the audit filter value to channels 1 and 2 (pins 11 and 12, 13 and 14).
2.2.6.17
Dynamic Mode
The EPA 3 controller unit contains a special feature called Dynamic Mode. This feature only shows changes in
opacity readings.
The setting is either on or off, default being off.
Note that the dynamic mode is not in conformance to the EPA Performance
Specification 1 requirements and cannot be used on any monitors that are used for regulatory compliance in
the US. Not complying with this may result in a violation.
2.2.7
ADDITIONAL SUB MENUS FROM DYNAMIC MODE
For controllers with version 3.35 chips (new units built after 6/99) and up, the following sub-menus have
been added to customize the unit to meet the customers needs better. The sub-menus are accessed from the
Dynamic Mode. To access, push and hold the NO key for > 5 seconds until the next mode below is viewed.
2.2.7.1
Process On/Off
This is a dry input that is controlled by and external switch on a process control board. Similar to a
maintenance switch, however it only works in conjunction with the LaserTrax 2000 software to invalidate
data collected in maintenance mode. Default setting is off.
2.2.7.2
Trax Monitor
The Trax monitor feature is a way that the monitor unit can sense via the 9-pin RS 232, whether the PC
connected to the unit has crashed, or the data collection software has failed. A system fault displaying Trax
Alarm will occur if the PC or software has failed. If no 9-pin connection exists, the Trax Monitor should be
turned off, as it will give an alarm. The default setting is off.