Liebert MPXIPC-NXH30XXX User Manual

Page of 40
Liebert
®
 MPX
 Installation and Assembly
18
3.3
Temperature/Humidity Sensor Installation—Optional
Optional Liebert
®
 SN temperature/humidity sensors are available to assist in monitoring conditions 
in the rack. Liebert SN sensors are designed for installation in a Knurr
®
 Miracel
 without tools, but 
each may be placed in any area to monitor temperature and humidity levels. Each connects to the 
Liebert RPC
, which makes readings available to Liebert MPX
 monitoring methods.
Only one mounting method is addressed in this manual: attaching a single sensor with a bracket to a 
Knurr Miracel frame member. For details on other mounting locations and methods, refer to the 
Liebert SN quick-start guide, SL-20840, or to the Liebert RPC user manual, SL-20825. Each is 
available at Liebert’s Web site, 
To install a sensor on a Knurr
®
 Miracel
 frame member:
1. Assemble the Liebert SN and sensor bracket:
a. Insert the sensor bracket base into one end of the sensor support as shown in Figure 16.
b. Snap the sensor into the other end of the sensor support.
2. Choose where in the rack to install the sensor assembly. Emerson recommends placing the sensor 
in the area that is likely to be warmest.
3. Hold the sensor bracket on a T-slot on the Knurr Miracel frame where the sensor will be placed.
4. Insert the included quarter-turn fastener through the rectangular hole in the sensor bracket base 
and into the T-slot (see Figure 16).
5. Turn the fastener clockwise 90 degrees, a quarter of a turn.
6. Route the sensor cable to the Liebert RPC and insert it into the card’s external sensor port.
For further details, refer to the Liebert RPC user manual, SL-20825, which shipped with the card 
and is available at Liebert’s Web site: 
Figure 16 Temperature/humidity sensor mounting
Sensor Bracket Base
Quarter-Turn Fastener
Rectangular protrusion passes 
through bracket slot (above) and 
into T-slot on Knurr Miracel frame 
member (below).
Sensor Support
Liebert SN Sensor
Liebert SN 
Sensor Cable