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Operation
performed routinely, every 168 hours or less. The check can be initiated by any of the three methods
described below.
Upon Sensor Turn On
If the Sensor has not been powered for 15 minutes or more, a Calibration Check will be performed
after the unit is powered and warmed up and stabilized, approximately 15 to 20 minutes after
powering on.
Automatically
A Calibrate Check can be initiated every 168 hours using the Sensor Auto Calibrate HOUR function.
An OFF setting is also available. If the OFF is selected, Manual Calibrate Checks must be initiated
every at least every 168 hours.
Manually
Initiate a Manual Calibrate Check using the Sensor Rear Panel Keypad or Modline 5 accessory.
Accessories include the Model DPM Panel Meter, Model MSI multiple sensor interface, ModView
software or an RS-485 communication command.
Series 56 Manual and Automatic (HOUR Function) Initiated Calibration Check Summary
Calibration Check Initiation
Alarm
Condition
Display
RS485 and 20mA
Temperature Outputs
Manually Initiated Calibration Check
with Self Calibration, if required.
It is not recommended to perform a Manual
check more once than every 24 hours.
Alarms Off
CAL
(Sensor, ModView,
DPM, MSI)
Last Temperature
reading held
HOUR Parameter (168 Hours or OFF)
User Selected Time Interval 168 hours only.
(Factory default setting = 168)
Alarms Off
CAL
(Sensor, ModView,
DPM, MSI)
Last Temperature
reading held
Note 1
Note 1
OFF
User must perform Manual Cal every 168
hours or less.
The Calibrate Check function will not operate with Sensor Alarms X107, X106, X105,
X104, X103, X101. A Detector Hot or Cold alarm must be off for at least 15 minutes
before a Cal Check can be initiated. See Section 5.12 Out of Range Displays and
Error Codes, page 112 for error code explanations.
98
Rev. L4 12/2012
Modline 5