Galvanic Applied Sciences 943-TGX, Руководство по эксплуатации

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Revision 4 46 August 02, 2019
a) Timers
Auto Cal Interval - The time period between automatic calibrations. The range is
0 – 16,666 minutes. This parameter defines the integer time interval, in minutes, between
autocalibration cycles. A value of zero (0) disables the auto-calibration function. An auto-
calibration is simply an automated Manual Zero sequence. Typical values are between
60 (once every hour) and 1440 (once every day). The auto-calibration will not run if the
analyzer is in a fault condition.
Zero Purge Interval
- The length of time (integer number of seconds) that zero gas is
allowed to flush the measurement cell during the purging part of the calibration sequence,
before a new Reference value is computed. The interval must be at least ten (10)
seconds longer than the time typically required to flush the measurement cell of the
sample. During the last ten (10) seconds of this interval, data is accumulated for the
computation of the new ‘Reference’ value. The interval is typically greater than fifteen
(15) seconds.
The Auto Cal Interval is timed from the completion of the last zero
sequence, whether manually or automatically initiated.
Zero Hold Interval
-
The length of time (integer number of seconds) that the relay outputs
and indicators are held in a calibration state after a new zero has been established.
During this time interval, process sample gas is aspirated into the measurement cell and
the concentration outputs climb to actual readings. At the expiration of this interval, relay
outputs and indicators are returned to a valid data state. This value is typically fifteen (15)
seconds.
b) Temperature Control
Cell Setpoint
-This parameter specifies the temperature control setpoint of the
measurement cell in degrees C (ºC). This set point is typically 150
o
C.
Cell Prop Band -This parameter specifies the proportional term (in percent) used in the
PID temperature control algorithm for the measurement cell heater. This value is typically
1.0%.
Cabinet Set Point (ºC) - This parameter specifies the set point temperature, in degrees C
(ºC), of the control cabinet. This value is typically 35ºC. If the cabinet set point
temperature is exceeded, the cabinet cooling air solenoid is energized to deliver air to the
cabinet Vortec cooler.
Cabinet Deadband (ºC)
- This parameter specifies the control cabinet set point deadband
in degrees C (ºC). This parameter is typically set to 5 or more to reduce the number of
solenoid cycles.
Probe Set Point (ºC)
- This parameter specifies the set point temperature, in degrees C
(ºC), at which the gas sample at the probe outlet is to be maintained by the probe cooler.
This value is typically 110-120ºC. This parameter is used only when a probe RTD is
installed and the Control with RTD function is selected.
Probe Deadband (ºC)
- This parameter specifies the probe set point deadband, in
degrees C (ºC). This parameter is typically set to 5 or more to reduce the number of