Instrument Configuration; Change Alias; Change Unlock Code - Emerson MRLDS 450 User Manual

State
Warm-up
Normal
Low Alarm
High Alarm
Offline
Fault
Negative Gas Fault
Zero Cal. Fault
Span Cal. Fault

4.2.3. Instrument Configuration

For security, access to configuration and calibration options are restricted to authorized users only. Access to
these functions require use of an unlock code.
To unlock instrument configuration, go to the Configure tab to set up the device. When prompted, enter
unlock code to access device configuration. (The instrument's default code is "1234"). Instrument will
remain unlocked until Bluetooth® connection has ended.

4.2.3.1. Change Alias

To allow easy identification of a given instrument, an alias can be assigned to each instrument. This alias is
displayed when searching for an instrument via Bluetooth®, on Calibration Cert and in the Home tab. To set
the alias:
• On the Configure tab select Alias. Enter the required alias for instrument and select OK.
• The instrument must be restarted for change to take effect. Selecting the Home tab then Restart will
reboot device.
• Reconnect to instrument to confirm the alias has been updated.

4.2.3.2. Change Unlock Code

To prevent unauthorized access to instrument configuration and calibration, the default instrument unlock
code should be changed during commissioning. To change unlock code:
• On the Configure tab select Modbus Unlock Code. Enter the new 4-digit unlock code for instrument
and select OK.
• The instrument must be restarted for changes to take effect. Selecting the Home tab, then Restart will
reboot the device.
• Reconnect to instrument to confirm the unlock code has been updated.
Status Ring
Green Gas detector stabilizing after power on or restart.
Green Normal Operation.
Yellow Gas measurement has exceeded low alarm setpoint.
Red Gas measurement has exceeded high alarm setpoint.
Gas Detector in maintenance mode and is not actively
Orange
monitoring gas.
Orange A fault has been detected.
Gas Detector calibration has drifted below zero, requires
Orange
zero calibration.
Error occurred during zero calibration. Zero calibration has
Orange
not be updated. Zero calibration required.
Error occurred during span calibration. Span calibration has
Orange
not be updated. Span calibration required.
Table 4-2 - Status Ring of Various Instrument States
NOTICE: Default alias, passkey, and unlock code can be changed via the
MRLDS-400 Series App's configuration menu. Default values should be changed
after instrument installation for security purposes.
NOTICE: If the custom unlock code is forgotten, the unlock code may be reset
to default value (1234) by resetting system to factory defaults. Refer to Section
4.1.6., Reset System to Factory Default Settings for the system reset procedure.
Note that a system reset will return all custom system configurations to defaults.
Description
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