Reset System To Factory Default Settings - Emerson MRLDS 450 User Manual

Switch locations above are referred to in this document as MAG#1 and MAG#2. Depending on the duration
the switch is held, a short "tap" or long "hold" will be detected.
• To carry out a tap function, tap the relevant switch location for one (1) second, until a single "chirp" is
heard and remove the wand to confirm a "tap."
• To carry out a hold function, do not remove the magnetic wand after the first "chirp" but continue
to hold for more than five (5) seconds, until a double "chirp" is heard, and remove wand to confirm a
"hold." If either switch is held for more than 30 seconds, a stuck switch fault will be indicated.
• To interact with the instrument without use of the magnetic wand, two internal push button tactile
switches may be used. Remove the lid without removing the ribbon cable to access. Internal switches
TACT#1 and TACT#2 mirror the functions of MAG#1 and MAG#2.
The function of each switch depends on the current state of the instrument. Refer to Table 4-1 for switch
functions in each instrument state.
State
Warm-up
Normal
Low Alarm
High Alarm
Offline
Fault
Negative Gas
Fault
Zero Cal. Fault
Span Cal. Fault

4.1.6 Reset System to Factory Default Settings

To reset system to factory defaults, remove lid and hold TACT#1 and TACT#2 simultaneously for 30 seconds.
Instrument will restart to confirm factory reset. Alternatively, see Section 4.2.3.4., Reset to Factory Defaults,
for instructions on resetting instrument configuration via the MRLDS-400 Series App.
Figure 4-1 - Magnetic Switches
Switch 1 Tap Switch 1 Hold
Calibration
Mute Buzzer
Mute Buzzer
Enable
Bluetooth®
Connectivity
Mute Buzzer
Mute Buzzer
Acknowledge
Table 4-1 - Switch Functions
Switch 2 Tap
Start Zero
Bluetooth®
Connectivity
Fault
Switch 2 Hold
Ack. Latched Alarm
Ack. Latched Alarm
Disable
Ack. Latched Fault
Acknowledge Fault
Start Span
Calibration
Start Zero
Calibration
13