Galvanic Applied Sciences 943-TGS-CE, Operation Manual

Page: 72 / 158

Revision 5 72 August 2021
parameter using the numerical keys and the decimal point key, then press
↵
to save. When
all desired changes have been made, use the F4 / F3 keys to highlight Save , then press
↵
to save all changes permanently to the analyzer. Alternatively, highlight Revert, and press
↵
to revert all changes made since the last time the Save button was pressed.
4.8.4.1 Timers
The parameters in the orange Timers box are described in Table 14.
Table 14: Timers Parameters
Parameter Normal
Value
Explanation
Auto Cal
Interval
240 (min)
The time period that elapses between subsequent zero-
calibration cycles. The interval is timed from the completion of
the previous calibration cycle, regardless of whether that
calibration cycle was automatically or manually initiated. The
maximum value is 16666.7 min. The minimum value is zero,
in which case the automatic zero calibration function is
disabled. The automatic zero calibration will NOT run when
there are any fault conditions present.
Zero Purge
Interval
≥ 15 (sec)
The time period that elapses after the analyzer is placed into
back purge mode for a zero calibration cycle (either manual or
automatic) prior to the initiation of the zero calibration cycle.
This value should be at least 10 seconds longer than the
minimum amount of time required to completely purge the
measurement cell of all sample gas and fill it completely with
zero gas. The final 10 seconds of this interval are used to
collect zero data used in the calculation of the new zero
baseline. The exact value of this parameter will depend on a
variety of analyzer conditions, including but not limited to
probe length and zero gas pressure / flow rate.
Zero Hold
Interval
≥30 (sec)
The amount of time the analog outputs and relay outputs are
held in the calibration state after the completion of the new
zero baseline calculation. During this time period, sample gas
is drawn through the measurement cell by the aspirator, and
measured concentration values climb up to normal process
values. At the completion of this interval, the analog outputs
are begin to update as normal, and the relay outputs are
returned to normal on-line state. The exact value of this
parameter will depend on a variety of analyzer conditions,
including but not limited to probe length and aspirator drive air
pressure / flow rate.
4.8.4.2 Temperature Control
The parameters in the green Temp. Control box are described in Table 15.