MSA MultiGard 5000, Руководство пользователя

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3103-1001 Rev. 0
Mode". Note that one of the span steps may be missing if the installed sensors do not require a
second span gas supply.
.
Dual MultiGard 5000 Systems
The multistate indicator showing all the various stages of auto standardization exists for both System
A and System B. All other items directly below these indicators apply to the
specific System that is called out by the indicator. Remember that Sensors 1 and 2 are associated
with System A and Sensors 3 & 4 are associated with System B.
Four columns consisting of ”Disable/Span 1/Span 2” Indicator, “Measured Zero”, “Measured Span”,
“Actual Zero Gas Value”, Span Type Indicator, “Span Gas Value”, and a Tolerance Indicator - These
seven items are duplicated for each sensor and are defined as follows: The "S[1-4] Disabled"
indicator will show for each sensor when auto standardization has not been MSA factory enabled.
When auto standardization is enabled the indicator will show “S[1-4]:Span 1” or “S[1-4]:Span 2”
depending on the span gas is required for each sensor. The “Measured Zero” is the real reading
captured during the zero phase of auto standardization. The “Measure Span” is the real reading
captured during the span phase of auto standardization. The Actual Zero Gas is the gas cylinder
concentration and is displayed as a reference. The Span Type Indicator reads "Actual" or "Synthetic"
depending on which type of span gas is being use. The Span Gas Value is the gas cylinder
concentration and is displayed as a reference. When the “Measured Zero” and “Actual Zero Gas”
values are equal and the “Measured Span” and “Span Gas” values are equal the sensor is in perfect
alignment. The Span Gas value may be converted if a synthetic span gas is being used and was MSA
factory configured. The tolerance indicator shows the combined status of any of the auto
standardization tolerances and is either "Tolerances OK" or "Tolerances Out !”.
When auto standardization tolerances are out, a manual calibration of the sensors is required to bring
the sensors back into tolerance limits. See Section 3 for specific details.
"Manual Calibration" & Annunciator Bar - This is an HMI navigation button which switches to the
Manual Calibration screen. The annunciator bar is normally an invisible indicator that will appear
and flash when a gas cylinder flow failure(s) exist.
"Start ASTD Now" - This is a push button that will trigger the auto standardization procedure. The
operator must
press and hold the button 3 seconds for the auto standardization to start. Watch the
multistate indicator at the top of the screen for when the procedure starts. This start requirement
serves to prevent accidental false starts. Once started, the auto standardization procedure cannot be
stopped.
"Timed ASTD Disabled" - This indicator shows that the Timed auto standardization feature has been
disabled by the user or was left default. This indicator shows "Next Timed ASTD In:" when timed
auto standardization is enabled.
"DAYS To ASTD" - The number of days until the next auto standardization is performed. This field
is zero if the timed auto standardization is disabled.
"HRS To ASTD" - The number of hours until the next auto standardization is performed. This field
is zero if the timed auto standardization is disabled.
"MIN To ASTD" - The number of minutes until the next auto standardization is performed. This
field is zero if the timed auto standardization is disabled.