Filter
Top Products
Configuration
January 2009 UDA2182 Universal Dual Analyzer Product Manual 83
6.10 Monitors Configuration
Overview
Monitor 1, 2, 3, and 4
A Monitor Block is used to determine when a process value is greater or less than a
specified setpoint. Monitor blocks can be used for ON/OFF type control or, in
conjunction with switch and math blocks to change process gain based upon control
regions. The Monitor block provides a hysteresis value limit output transitions near the
set point value. The Monitor block can be configured as either a High or Low Monitor
type. There are four monitor blocks provided for general use.
Unlike Alarms, Monitor blocks do not create an event in the event history, nor do they
cause a status message to appear on the display.
Accessing Monitors Menu
• Press
Setup
to display the Main menu.
• Use the keys to select “Monitors” then press
Enter
to enter the sub-menu.
• Press to highlight the desired Monitor selection then press
Enter
to display
the group of parameters.
Refer to “Section 6.4.1 – “General Rules for Editing”.
Table 6-9 Monitors Configuration
Sub-menu
selection
Parameter Selection or
Range of Setting
Parameter Definition
Monitor Type
High (default)
Low
Alarm actions may be High or Low.
(See NOTE 2 on next page)
Source
Any Analog Signal
See Table 6-3
Analog Signal Source – Process signal to be
monitored by the Alarm. Any analog source such
as PV, Temperature, Pharma, Math, Function
Generator, Switch, PID, or Calculated Values*
*
units of measure between the two input boards must
be similar
Setpoint Value 0 to 99999.9 in
Engineering Units
default = 0.000
Setpoint Value in Engineering Units used for
activation of the output based upon the monitor
type
Hysteresis 0.0 to 99999.9 in
engineering units
default = 0.000
Hysteresis - A user-specified hysteresis value in
the engineering units of the process variable
source is provided. Hysteresis in engineering
units can be set from 0 to the input span of the
monitored variable.
Monitor 1
Monitor 2
Monitor 3
Monitor 4
On Delay 0 to 999 seconds
default = 0.0
An on-delay time value up to 999 seconds is
available to prevent momentary alarm actions.
Number of seconds the alarm is active before
activating the Output.
See Notes on next page