Emerson MRLDS-450 Installation And Operation Manual page 20

Figure 4-1 - Magnetic Switches
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 4-5 for switch functions in each instrument state.
16 • MRLDS-450 Refrigerant Gas Detection I&O Manual 026-1316 Rev 0