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HP Environmental Base Station installed on a CRAH/CRAC 25

HP Environmental Base Station installed on a

CRAH/CRAC

Overview: Installing a base station on a CRAH/CRAC

The base station is a wireless device that collects temperature data from the external sensor arrays and sends

the information to the gateway. The base station also has its own internal temperature and humidity sensors

and collects data of its own to send to the gateway.

When the base station is installed on a CRAH/CRAC, it is attached to the HP Plenum Rated Sensor Array,

and sends its own internal temperature readings and the external temperature reading from the sensor arrays

to the gateway.

The sensor array is composed of sensor pods, each with a thermistor that collects temperature data for a

specific location. The sensor array is connected to the HP Environmental Base Station, which collects the

thermistor readings and sends the readings to the gateway.

The HP Plenum Rated Sensor Array is composed of two sensor pods, one that measures the temperature at the

supply side of the CRAH/CRAC, and one that measures the temperature at the return side of the

CRAH/CRAC.

There are two CRAH/CRAC installation configuration options:

• Single—(Standard installation configuration) The base station measures temperature and humidity on

the supply side of the CRAH/CRAC and measures only temperature on the return side of the

CRAH/CRAC.

• Dual—(Optional installation configuration) The base station measures temperature and humidity on

both the supply and return side of the CRAH/CRAC. The return air temperature is an average of six

thermistor readings.

Installing the HP Environmental CRAH/CRAC (Single)

Base Station

WARNING:

The CRAH/CRAC must be powered down and the fans must be stopped before you

access the return plenum for hardware installation.

Installing the HP Plenum Rated Sensor Array

1. Ensure the desired installation locations around the CRAH/CRAC are free of dust before installing the

sensor array.

NOTE: The sensor array has labels that indicate the location where the array string must be

installed. Before installation, verify that you are installing the array string to the correct location.

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HP Data Center Environmental Edge Manual de instalación Pagina 25