pen as with typical felt pen type recorders. Chart ranges and scales are factory programmed, per applicable
PMO requirements, but may easily be re-ranged in the field. Charts are plain paper, and pre-printed only
with circular ring divisions. Division spacing meets PMO requirements. User defined scales and chart
ranges are printed in one of four available colors.
1.3.5. Cold Product Record - Control
The AV-9900 may be configured to receive an input from an RTD, or mA transmitter, measuring the Cold
Product temperature as it exits the pasteurization loop. This function may be specified at time of order, or
upgraded in the field at a later date. A factory set, field modifiable scale has been programmed for the
recording pen. Data will be recorded in color allowing easy interpretation when reviewing chart
information.
An additional option exists for controlling the Cold Product Cooling within the AV-9900. An optional
PID Loop Control function can be specified at time of order, or upgraded at a later date in the field. This
function will receive its input from the same probe measuring the Cold Product temperature. In turn, a
desired set-point may be programmed, with output signals interfacing to the cooling loop. The PID, or
control functions, will vary the resulting output signal based on rising above or falling below the desired
Cold Product set-point.
1.3.6. Hot Water Loop Control
The AV-9900 may be configured to receive an input from an RTD, or mA transmitter, measuring the Hot
Water Loop temperature. This function may be specified at time of order, or upgraded in the field at a later
date. In turn, a desired set-point may be programmed, with output signals interfacing to the Hot Water
Loop. The PID, or control functions, will vary the resulting output signal based on rising above or falling
below the desired Hot Water set-point.
If various products are being processed, up to five Hot Water Controllers are available (one for each STLR
diversion set-point). Each controller may have it’s own set-point and PID tuning parameters. When the
operator selects a new STLR diversion set-point, the corresponding Hot Water Controller is automatically
selected. Again, Hot Water Control set-points and PID tuning parameters would have been pre-
programmed
1.3.7. Safety Flow Limit Record - Control
The AV-9900 may be configured to receive an input from a Sanitary Flow Meter for the purpose of
controlling the pasteurization loop flow rate via Meter Based Timing. This function may be specified at
time of order, or upgraded in the field at a later date. A factory set scale has been programmed for the
recording pen per FDA (Food & Drug Administration) guidelines. Data will be recorded in color allowing
easy interpretation when reviewing chart information. In addition to the recorded flow rate on the chart, an
event pen is also present on the outer chart area. This event pen indicates when the system has gone below
“Loss of Signal” setpoint, “High Flow” setpoint or is in proper flow. These alarm conditions directly
switch on-board mechanical relays. Contacts of the relays interface with the Legal Flow Control unit,
allowing for auto system divert in the event of an alarm condition.
An optional PID Loop Control function can be specified at time of order, or upgraded at a later date in the
field. This function will receive its input from the same flow meter signal feeding the recording pen. In
turn, a desired set-point may be programmed, with output signals interfacing to the pump controlling the
system flow rate. The PID, or control functions, will vary the resulting output signal based on rising above
or falling below the desired Flow Rate set-point.
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