Using Hold; Purpose; Using The Hold Function - Emerson Rosemount MCL-220 Manual

5.5

Using hold

5.5.1

Purpose

To prevent unwanted alarms and improper operation of control systems or dosing pumps,
place the alarms and outputs assigned to the sensor in hold before removing it for
maintenance.
Hold is also useful if calibration will cause an out of limits condition. During hold, outputs
assigned to the sensor remain at the last value, and alarms assigned to the sensor remain
in their present state.
Once in hold, the sensor remains in hold until hold is turned off. However, if power is loss
than restored, hold is automatically turned off.
5.5.2

Using the hold function

To put the sensor in hold, complete the following steps.
1.
2.
Instruction Manual
Press MENU.
The main Menu screen appears.
Choose Hold.
The screen shows the current hold status for each sensor.
Display and operation
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