YSI IQ SensorNet 2020 XT Terminal - Manual (Page 44)

Installation System 2020 XT USB
3 - 14 ba76019e01 12/2012
3.5.2 Stacked mounting of MIQ modules:
Caution
For optimum stability, a maximum of three MIQ modules can be
mounted in any one stack. Only one MIQ power supply module
may be mounted per module stack.
Mounting direction MIQ modules can be stacked on top of one another from both sides. All
the required installation materials are contained in the scope of delivery
of the MIQ modules.
Which variant is suitable for a specific case depends on whether and
how an MIQ module is already permanently installed at a location (e.g.
on a wall or in a panel), among other factors.
Note
In the case of panel mounting, the front MIQ module can only be
installed individually in the switch cabinet aperture. Only then can
further MIQ modules be added to its back (variant 2). If necessary,
dismantle the front MIQ module from an already mounted stack before
mounting.
Materials required  2 x ISO blind nuts M4
 2 x cheese-head screws M4x16 with plastic washer
 1 x contact base with two plastic tapping screws.
Tools  Phillips screw driver.
Variant 1 - stack expansion
forwards.
The back of an MIQ module is
attached to the lid of another
MIQ module
(page 3-15).
Variant 2: - stack expansion
backwards.
The lid of an MIQ module is
attached to the back of another
MIQ module (page 3-18).