Black Box EME102A User Manual
March 2004
EME102A
ServSensor JR
CE STATEMENT
This product carries the CE mark to indicate compliance with the
European Directive on Electromagnetic Compatibility
(89/336/EEC). It has been tested to EN55024:1998 and
EN55022:1998.
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ServSensor JR
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CONTENTS
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ServSensor JR
Contents
What is ServSensor JR?.............................................................. 6
1. Installation .................................................................................. 8
1.1 Installation steps .......................................................................... 8
1.2 Assigning IP address ................................................................. 10
2. Intelligent sensors................................................................... 14
2.1 Installing and configuring sensors............................................. 15
2.1.1 Temperature sensor............................................................. 19
2.1.2 Dual sensor (Temperature & Humidity)............................. 22
2.1.3 Water detector..................................................................... 26
2.1.4 Airflow sensor .................................................................... 28
2.1.5 AC voltage sensor............................................................... 31
2.1.6 DC voltage sensor............................................................... 33
2.1.7 Security sensor.................................................................... 36
2.1.8 Dry contact sensor .............................................................. 38
2.1.9 4-20mA converter............................................................... 41
2.1.10 Power relay board............................................................. 44
2.1.11 Smoke detector ................................................................. 46
2.1.12 Motion detector................................................................. 48
2.2 External sensor integration ........................................................ 50
3. Integration with network management systems ........ 51
3.1 HP OpenView............................................................................ 52
3.1.2 Loading the MIB to NNM .................................................. 52
3.1.3 NNM menu integration....................................................... 53
3.1.4 Polling SNMP, thresholds and alarm.................................. 55
3.1.5 Traps in NNM..................................................................... 57
3.1.6 Graphing with NNM........................................................... 58
3.1.7 Using the MIB browser ...................................................... 59
3.1.8 Testing alarms in NNM ...................................................... 60
3.2 WhatsUp Gold ........................................................................... 62
3.2.1 Monitoring ServSensor JR with WhatsUp Gold ................ 62
3.2.2 Browsing SNMP variables ................................................. 63
3.2.3 Graphing the values of SNMP variables ............................ 67
3.2.4 Receiving SNMP traps from the ServSensorJR ................. 71
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3.3 MRTG - free data graphing ....................................................... 78
3.3.1 MRTG installation.............................................................. 78
3.3.2 Sample MRTG graphs ........................................................ 82
3.4 Frequently used OID's ............................................................... 84
3.5 ServSensor JR MIB ................................................................... 88
CONTENTS
4. SNMP .......................................................................................... 89
4.1 MIB on the ServSensor JR ........................................................ 90
4.2 MIB II on the ServSensor JR.................................................... 91
4.3 SNMP traps................................................................................ 93
4.4 Trap thresholds .......................................................................... 93
4.5 Trap Var Bind information ........................................................ 94
4.6 Community string ...................................................................... 96
5. Web based User Interface................................................... 97
5.1 Login page ................................................................................. 99
5.2 Summary page ......................................................................... 100
5.3 Sensors setting ......................................................................... 102
5.4 Graphing .................................................................................. 103
5.5 Traps setting ............................................................................ 105
5.6 Mail page ................................................................................. 106
5.7 Network settings ...................................................................... 108
5.8 System page............................................................................. 109
5.9 Help menu................................................................................ 111
6. Utilities...................................................................................... 112
6.1 Utilities .................................................................................... 112
6.1.1 IP set ................................................................................. 112
6.1.2 Data collection.................................................................. 112
6.2 UCD Utilities........................................................................... 115
6.2.1 SNMP Get......................................................................... 115
6.2.2 SNMP Set ......................................................................... 119
6.2.3 SNMP Walk...................................................................... 123
7. FAQ's ....................................................................................... 127
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ServSensor JR
What is ServSensor JR?
The standalone ServSensor JR is a new intelligent device for
monitoring environmental variations, power, physical threats and
security. The ServSensor JR is a completely embedded host with a
proprietary Linux like Operating System, including TCP/IP stack, Web
server, email, SMS and full SNMP functionality.
The ServSensor JR works with every intelligent sensor in the BLACK
BOX family. You can connect any of our sensors in any combination
to monitor temperature, humidity, water leakage, Airflow including
long term graphing, security, detect AC Power Line Voltage, Measure
DC Voltage, control relays, and many more. Our sensors include an
integrated data collection and graphing package to spot trends in the
airflow, temperature, and humidity.
Dry contacts and drivers are available for monitoring UPS status,
security systems, and air conditioning status.
Every sensor comes with our unique Autosense feature. Whenever a
new type of sensor is plugged in, the Autosense will recognize it and
reconfigure the ServSensor JR to begin monitoring it. In the event of
an alarm or temperature / humidity threshold being exceeded, it has
ability to send alert notification using Email, SMS and SNMP Traps.
The ServSensor JR ’s advanced encrypted micro code updating
program can update your firmware over the Internet.
A new web based interface with a user and administrator login feature
helps users to prevent unauthorized access to the device and a powerful
embedded system logging features is available.
The ServSensor JR is fully SNMP compliant and configurable.
Following initial configuration by the RJ45 port to set basic parameters
such as IP address, Subnet Mask, Default gateway, SNMP community
strings, trusted IP addresses and trap destinations, the unit is fully
configurable from any SNMP terminal or Network Management
product. Setup is easy with the embedded web server. There is a simple
graphing utility integrated into the ServSensor JR that can monitor
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every temperature, humidity sensor and other such factors and can
display you the graphical report.
The ServSensor JR is supplied with a MIB to allow its interface to
SNMP based Network Management systems such as HP Open View,
IBM Tivoli, CA Unicenter TNG and others.
CONTENTS
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ServSensor JR
1. Installation
1.1 Installation Steps
The ServSensor JR is a plug and play device you can easily connect to
your existing network set up.
Every ServSensor JR has the factory default IP address of
192.168.0.100, and you can change this address if so needed for your
network configuration.
Ensure the following items are available with you before installing the
ServSensor JR:
1. A crossover Category 5 or better network cable with RJ 45 male
connector
2. A PC with an Ethernet card installed and configured (you can also
plug ServSensor JR into your LAN)
3. A power socket to plug in the AC to DC adaptor for ServSensor JR
4. You can also assign the IP address using the web based user
interface of ServSensor JR. Go to any web browser such as Internet
Explorer, type the factory default IP address (192.168.0.100) and from
the system page enter the IP address and click set button. Use a
crossover cable connection to perform this step.
An overview of the installation process consists of:
1. Assign an IP address to the ServSensor JR.
2. Use the embedded web manager to set sensor thresholds, email and
trap information.
3. Use your management station or SNMP script to collect information
from the ServSensor JR.
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1.2 Assigning IP address
The ServSensor JR has a 10 Mb/s Ethernet LAN. It uses one 10BASET (RJ-45) connector. To set up the ServSensor JR you must connect it
to the network by plugging in the RJ-45 connector and assigning an IP
address.
The ServSensor JR can have its IP address assigned in several different
ways. The first way is to statically assign an IP address. This is the
simplest and most commonly used method.
The second method is to use DHCP. This stands for dynamic host
configuration protocol. This method requires you to have a DHCP
server.
Statically Assigning the IP Address.
Static IP Addresses are often used in equipment such as routers and
other network equipment. Once a static assignment of an IP address is
made, it never changes. All changes to the IP address are saved to
EEPROM and retain their values even if power is lost.
Connecting a host to the ServSensor JR.
In order to assign the IP address, the ServSensor JR needs to be on the
same LAN as the computer that is assigning the IP address. If the
ServSensor JR is on the other side of a router, the router will change
the MAC address and this method will not work. The surest way is to
use a crossover cable on the local computer, however you can also use
most hubs to connect to the ServSensor JR. From then on you can
change the IP address using IPSet.exe The IPSet.exe method cannot
traverse routers.
Assigning the IP Address using IPSet.exe
The CD you have received with ServSensor JR comes with a program
called IPSet.exe. The IPSet.exe program is designed to run on a
Microsoft host. Once the program has started enter the MAC address in
the section labeled "Client's Mac Address". The Mac address can be
located on the sticker on the ServSensor JR. Next enter the IP address
that you wish to assign to the ServSensor JR. Then press set.
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IPSet.exe first checks the IP address to see if it already assigned. Next
it will assign the IP address and then it will check that the address was
successfully assigned. If all is well then IPSet.exe will report that the
assignment is Complete.
You can verify the IP assignment by using ping or by using a browser
to access the ServSensor JR. To use a browser enter the address:
http://<ip_address>
depending on the IP address that you have assigned.
Using a Web browser to assign the IP address.
The ServSensor JR is shipped with the IP address 192.168.0.100
You can enter this IP address into your web browser and use the
browser to change the IP address to the new address. For example enter
http://192.168.0.100
into the URL of the web browser and hit return. Once the page has
loaded you can press the Network tab and enter a new IP address for
the ServSensor JR.
However, before you can load the web page you usually have to set up
the routing table in the host computer. This is because the IP address
192.168.0.100 is probably on a different subnet than the PC. In the
usual case the PC will try to connect to 192.168.0.100 using the default
gateway, which is not what you want.
To set up the routing table, open a DOS window and at the command
prompt enter
route add 192.168.0.100 10.1.1.20
where 10.1.1.20 is the IP address of the Ethernet interface that the
ServSensor JR is plugged into using the crossover cable (basically your
PC). Now ping 192.168.0.100 to see if the connection was successful
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ServSensor JR
Using ARP to Assign the IP Address.
You can assign a new IP address to the ServSensor JR through the use
of ARP. The ARP method may be preferable if you do not have access
to a Microsoft host or if you prefer to use another host such as Linux to
assign the IP address. You can use this method to assign the initial IP
address or if you have forgotten the IP address that was assigned to the
ServSensor JR.
To assign a static IP address to the ServSensor JR, use ARP. Enter the
following from the command prompt:
arp -s <ipaddress> <EthernetMACAddress>
where <EthernetMACAddress> is the Ethernet MAC address located
on the sticker on the ServSensor JR and <ipaddress> is the IP address
you wish to assign.
For example:
arp -s 192.189.207.2 00-40-17-03-b2-04
To check that you have entered this command correctly, enter:
arp -a
Now ping the ServSensor JR from the DOS prompt. For Example:
ping 192.189.207.2
It is the ping that actually sets the new IP address.
Testing the new IP Address
You have now assigned your ServSensor JR a new IP address. You can
check that this is the case by using ping or by using a web browser.
Whenever a new IP address is assigned to a ServSensor JR that new IP
address is saved in EEPROM. This means that the ServSensor JR will
retain its new IP address even after power is recycled. You can test that
is the case by cycling power to the ServSensor JR.
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Assigning the IP Address using DHCP
The ServSensor JR is shipped with DHCP disabled. So if you want to
use DHCP, you must first enable this using either SNMP or the web
interface. To use the web interface, press the “Network” tab, select
“Use DHCP” and then press set.
With DHCP the ServSensor JR puts out a request to the DHCP server
to be assigned an IP address. This is a broadcast message and is
forwarded by routers to the DHCP server. The DHCP server responds
by sending the ServSensor JR a new IP address and a lease period.
When the lease period reaches the renew time, which is normally one
half of the lease period the ServSensor JR will send a message to the
DHCP server that loaded it to renew its lease. If the server responds,
then the lease is renewed for a period of time chosen by the DHCP
server.
If the DHCP server does not respond the ServSensor JR periodically
resends the request until the rebind period, which is normally 7/8 of the
lease period. At this time the ServSensor JR puts out a broadcast
message for any DHCP server in the enterprise. If the server responds,
then the lease is renewed. If the server does not respond then at the end
of the lease the ServSensor JR will voluntarily take its IP address off of
the network while continuing to periodically broadcast a request to any
DHCP server.
If the ServSensor JR has a static IP address assigned, it will no longer
send out DHCP requests. If you later wish to turn DHCP back on you
can do that using the Web Based Manager.
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2. Intelligent Sensors
You can use any of our intelligent sensors with the ServSensor JR .
The following intelligent sensors are available:
• Temperature sensor
• Dual Sensor (Temperature & Humidity)
• Water Detector
• Airflow Sensor
• AC Voltage Detector
• DC Voltage Sensor
• Security Sensor
• Dry Contact Sensor
• Power Relay Board
• 4-20mA Converter
• Smoke Detector
• Motion Detector
• External Sensor
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2.1 Installing and Configuring Sensors
Installing the sensors
Simply open a web browser, plug in the sensor and the device will
automatically configure itself. The ServSensor JR will recognize the
sensor and begin monitoring it.
Navigating the interface
Choose the page titled Sensors. On the left hand side of the Sensors
page is a list of the different types of sensors. Click on type of sensor
and your sensor will appear with its port number. Click on the sensor
that you want and you will open the Sensor settings screen.
NOTE
After you plug in the sensor and then refresh the summary screen, your sensor
will automatically appear in the list of online sensors. If you click on the link under
the type column you will be taken immediately to the Sensor settings screen.
Entering data
To change any of the data fields you must press set after inputting the
change. The data will not be entered into the ServSensor JR until the
set button is pressed. After you press set, the web page will be
refreshed with the new data. Once you see the new data on the web
page, it indicates the ServSensor JR has accepted the data. The
ServSensor JR will have saved this data to nonvolatile memory and it
will be protected in case of power failure.
Sensor status color indicator
The colors red, orange and green indicate at a glance the status, red is
critical, orange is warning and green is in the normal field.
Disable Autosense
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You can disable the Autosense for any port by click on Advanced
Setting link at bottom, left of the Sensors page. Use the list box to pick
either Enable or Disable the Autosense for a particular port and then
click the Set button.
Configuring the sensors
Description: The description identifies this sensor and appears in
several places. The description of the sensor appears in the summary
page when this sensor is online. The description field is also included
in traps and Email for this sensor so that you can identify the reporting
sensor.
Status: The Status field shows the current status of the sensor. When
the sensor is offline the status is “noStatus”. When the sensor is online
the possible status values are “normal”, “WarningLow”,
“CriticalHigh”, “WarningHigh”, “CriticalLow” and “sensorError”.
When the sensor is online, the status is formed by comparing the
reading from the sensor to the thresholds. In the case of a switch, the
status is formed by comparing the value from the sensor with the
Normal State. It is recommended that they not be set too narrow as this
may cause unneeded messages to be generated.
Online: This is a read only field that can either be online or offline.
When the sensor is offline the status is not updated.
Go Online: You place the sensor online or offline by setting this field.
Use the single choice list box to pick either GoOnline or GoOffline.
Press the Set button below to implement your choice. When the sensor
is offline the status is not updated. It may be convenient to take a
sensor offline if it is reporting a large number of errors.
Critical High, Warning High, Warning Low, Critical Low: These
thresholds are compared to the sensor value several times a second and
the status set accordingly. Some sensors such as the temperature and
humidity sensors use these thresholds, whereas other sensors such as
dry contact inputs only use the Normal State to formulate the status.
Rearm: The Rearm parameter is useful for sensors whose values can
vary such as the temperature and humidity sensor.
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The Rearm is used to prevent the sensor from flickering between two
states. For example if the Warning High threshold for the temperature
sensor is set to 80 degrees and the sensor were to vary between 79 and
80 you could be faced with a very large number of emails, traps, and
events logged. The Rearm parameter prevents this by forcing the
temperature to drop by the Rearm before changing the state back to
normal. In this example if Rearm is set to 2 then the sensor would have
to drop from 80 down to 77 before the status would change from
Warning High back to normal.
Trap/Email Filter
Send Trap/Email On Normal Disable Feature: If not needed this
feature can be disabled by choosing 'disable' in the choice box, some
people may not want messages to signify normal conditions. Certain
applications and special projects may warrant messages being
generated when the sensor returns to a normal condition.
Delay Before Sending Trap/Email On Normal: There is also a delay
before sending Trap/Email on normal and is set in the same manner as
above. In this case the sensor is in the error state and will ignore
momentary fluctuations into the normal state.
Continuous time sensor is normal to report: This is for the elimination
of unnecessary messages during minor fluctuations. Enter the time in
seconds and press the set button. The amount of time that can be
entered is between 0 and 65535 seconds, which equals approximately
18 hours.
Example: an airflow or water flow sensor may have temporary drops in
readings that are normal operating characteristics, a logical time limit is
set to show abnormal conditions.
Minimum time between each Trap/Email: This is the time in minutes
between each Trap/Email. This is to prevent sending of multiple
Traps/Email, for a same event over a period of time.
Day of week Filter: With this option you can either enable or disable
the time period at which the ServSensor JR should send emails or
Traps. The time limit schedule can be configured so that the
ServSensor JR can send Mails/Traps during a fixed time interval. The
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settings can be made for every day of the week. The time interval range
can be from 00:00 hrs to 24:00 hrs. Mails/Traps will not be sent during
the time interval set.
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2.1.1 TEMPERATURE SENSOR
Temperature sensors are important where optimum temperature control
is paramount. If there is an air conditioning malfunction or abnormal
weather conditions, damage to information, delicate electronic
equipment or warehouse stock may occur.
Up to 2 temperature sensors can be plugged into RJ-45 jacks on the
ServSensor JR. Optional temperature sensors can be purchased with 15
or 60 feet of cable, allowing the sensors to be positioned in hot spots.
The ServSensor JR auto detects the presence of the sensor. Each sensor
has its own SNMP OID so that data can be collected over the network
and graphed.
A commonly used SNMP OID for the temperature sensor is the
number of degrees. This information can be used for graphing the
sensor.
The SNMP OID for temperature sensor degrees on RJ45 #1:
.1.3.6.1.4.1.3854.1.2.2.1.16.1.3.0
Specifications & Features:
• Never needs Calibration
• Measurement range Celsius: -55°C to +125°C
• Measurement resolution Celsius: 0.5°C increments.
• Measurement accuracy Celsius: ±0.5°C accuracy from -10°C
to +85°C
• Measurement range Fahrenheit: -67°F to +257°F
• Measurement resolution Fahrenheit: 0.9°F increments.
• Measurement accuracy Fahrenheit: ±0.9°F accuracy from
+14°F to +185°F
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ServSensor JR
• Communications cable: RJ45 jack to temperature sensor using
UTP Cat 5 cable.
• Sensor type: semiconductor microprocessor controlled
• Power source: powered by the ServSensor JR. No additional
power needed.
• ServSensor JR autodetects the presence of the temperature
sensor
• Measurement rate: one reading every second
• Up to 2 temperature sensors per ServSensor JR
• Full Autosense including disconnect alarm
• The ServSensor JR Temperature Detail page allows you to set
and get the working parameters of a specific temperature
sensor in the ServSensor JR.
Configuring the Temperature Sensor
Since all of BLACK BOX's intelligent sensors are configured similarly
not every field is described below. The descriptions below describe the
fields that are special to the temperature sensor.
For a general description about configuring all sensors including
information regarding common configuration parameters please see the
Installing and Configuring Sensors page.
Current Reading: The number of Degrees is displayed in this field.
This is a read-only field. This is an integer SNMP OID field. This
value can be polled via SNMP and the data can be used to graph the
temperature. The value displayed can be in Fahrenheit or in Celsius. If
communication to the temperature sensor is lost, the sensor value -512
will be returned by an SNMP get.
Status: If at any time communications with the temperature sensor are
lost, the status of the temperature sensor is changed to “sensorError”.
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If the communication with the temperature sensor is reestablished, the
status will be formed by comparing the Degree to the high and low
thresholds.
Degree Type: The Degree Type can be set to Fahrenheit or Celsius.
When the Degree Type is changed all the threshold fields will change
their values automatically. The ServSensor JR stores the thresholds for
both Celsius and Fahrenheit independently allowing you to switch
between the two.
CONTENTS
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ServSensor JR
2.1.2
DUAL SENSOR (TEMPERATURE & HUMIDITY)
A new sensor from the BLACK BOX family of sensors, the dual
sensor has both temperature and humidity measuring capabilities in a
single sensor. Now a single port can have two sensors, saving ports for
additional sensors. This extends the capability of the ServSensor JR to
measure up to 2 temperature and 2 humidity sensing parameters, just
by connecting 2 dual sensors on ServSensor JR, and 8 temperature and
8 humidity sensing parameters, just by connecting 8 dual sensors on
ServSensor JR 8.
Up to 2 dual sensors can be plugged into RJ-45 jacks on the
ServSensor JR. Optional dual sensors can be purchased with 15 or 60
feet of cable, allowing the sensors to be positioned in hot spots. The
ServSensor JR auto detects the presence of the dual sensor. Each
sensor in the dual sensor has its own SNMP OID so that data from the
temperature and the humidity sensors can be collected over the network
and graphed simultaneously.
When the dual sensor is plugged into the RJ45 port, the ServSensor JR
will auto detect the sensor, and it will display Temperature & Humidity
for each RJ45 port. The user can click the links for Temperature &
Humidity and can enter the settings page to configure the sensors.
Specifications & Features:
Temperature
• Measurement range Celsius: -40°C to +125°C
• Measurement resolution Celsius: 0.04°C
• Measurement accuracy Celsius: ±0.5°C accuracy from -10°C
to +85°C
• Measurement range Fahrenheit: -67°F to +257°F
• Measurement resolution Fahrenheit: 0.9°F increments.
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• Measurement accuracy Fahrenheit: ±0.9°F accuracy from
+14°F to +185°F
Humidity
• Measurement range: 0 to 100% Relative humidity
• Sensor element wettable without damage
• Resolution: 0.5 %
• Accuracy at 25°C ±3%,
• Working Range -20°C +60°C
• Communications cable: RJ45 jack to dual sensor using UTP
Cat 5 cable.
• Power source: powered by the ServSensor JR. No additional
power needed.
• ServSensor JR autodetects the presence of the dual sensor
• Up to 2 dual sensors per ServSensor JR
• Full Autosense including disconnect alarm
Configuring the Dual sensor
Since all of BLACK BOX's intelligent sensors are configured similarly
not every field is described below. The descriptions below describe the
fields that are special to the humidity sensor.
For a general description about configuring all sensors including
information regarding common configuration parameters please see the
Installing and Configuring Sensors page.
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Temperature
A commonly used SNMP OID for the temperature sensor is the
number of degrees. This information can be used for graphing the
sensor.
The SNMP OID for temperature sensor degrees on RJ45#1:
.1.3.6.1.4.1.3854.1.2.2.1.16.1.3.0
Current Reading: The number of Degrees is displayed in this field.
This is a read-only field. This is an integer SNMP OID field. This
value can be polled via SNMP and the data can be used to graph the
temperature. The value displayed can be in Fahrenheit or in Celsius. If
communication to the temperature sensor is lost, the sensor value -512
will be returned by an SNMP get.
Status: If at any time communications with the temperature sensor are
lost, the status of the temperature sensor is changed to “sensorError”.
If communications with the temperature sensor are reestablished, the
status will be formed by comparing the Degree to the high and low
thresholds.
Degree Type: The Degree Type can be set to Fahrenheit or Celsius.
When the Degree Type is changed all the threshold fields will change
their values automatically. The ServSensor JR stores the thresholds for
both Celsius and Fahrenheit independently allowing you to switch
between the two.
Humidity
A commonly used OID for the Humidity sensor is the percentage,
which can be graphed.
SNMP OID for Humidity sensor on RJ45#1
OID .1.3.6.1.4.1.3854.1.2.2.1.17.1.3.0
Percent: The relative Humidity Percent is displayed in this field. This
is a read-only field. This integer OID and can be polled. The data can
be used to graph the Humidity.
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Status: If at any time communications with the humidity sensor are
lost, the status of the Humidity sensor is changed to “sensorError”.
When communications with the humidity sensor are reestablished, the
status will be formed by comparing the percentage to the high and low
thresholds.
CONTENTS
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2.1.3
WATER DETECTOR
Water can enter a building in many different ways and in some cases
remain undetected, causing damage and problems to sensitive
electronic equipment. Computer and mainframe rooms have a false
floor and many instances of undetected water laying in these areas has
only been detected after a problem occurred. The Water detector is an
important addition to your BLACK BOX Sensor inventory.
The Water detector is an exclusive patent pending design capable of
detecting the presence of even distilled water. The water detector
contains a microprocessor-controlled capacitance measuring circuitry.
This is far more precise than standard commercially available water
detectors, which measure the resistance of water. The resistance of
water can vary depending upon the impurities in the water. Normal
resistance type monitors are unable to detect the presence of distilled
water due to its high resistance.
The entire circuit is encased in epoxy allowing the water detector to
function while submerged in water.
The water Detector detects water leaks and flooding with a WET/DRY
indication in software. The ServSensor JR will retain any error
condition until it is read via an SNMP Get. Therefore if a water
detector encounters a critical condition at any time it will report that
condition before it returns to a normal state.
The value of the Status for the OID for switch sensors can be
“normal”, “noStatus”, “critical” or “sensorError”.
For a switch type sensor on RJ45#1 the OID for the status is.
.1.3.6.1.4.1.3854.1.2.2.1.18.1.3.0
Features:
• On/Off alarm signal of Water detected
• Accurate, cost effective Water detecting system
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• Electronics are encased in epoxy and submersible
• Electronic circuitry capable of detecting distilled water
• Sensor type - open/closed contact switch
• Power source: powered by the ServSensor JR. No additional
power needed.
• ServSensor JR autodetects the presence of the Water Detector
• Up to 2 Water Detectors per ServSensor JR
• Includes disconnect alarm that checks that the sensor is
securely plugged into the ServSensor JR
Configuring the Water Detector
Since all of BLACK BOX's intelligent sensors are configured similarly
not every field is described below. The descriptions below describe the
fields that are special to the water detector.
For a general description about configuring all sensors including
information regarding common configuration parameters please see the
Installing and Configuring Sensors page.
Status: If the sensor is offline the status is “noStatus”. If the sensor is
online and there is no water detected the status is normal. If water is
detected then the status is critical. If at any time communications with
the Water Detector are lost, the status of the Water Detector is changed
to “sensorError”.
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2.1.4
AIRFLOW SENSOR
The airflow sensor is a device that registers airflow in areas where
consistent flow is needed, for example in cabinets and racks where the
consistent operation of a fan is critical to the operational safety of
electronic equipment.
The airflow sensor is placed in the air stream, where the user can
monitor the status and the amount of flowing air. In addition to an
on/off indication, it also graphs the analog values over a period of time,
although not a precision airspeed measurement device. If for example,
the fan slows down the user will be given an indication of the change
over time. This may happen if the fan is close to failure or the air filter
is clogged. The ServSensor JR shows this information using a graph
via the web interface.
The value of the Status for the OID for switch sensors can be
“normal”, “noStatus”, “critical” or “sensorError”.
The recognized OID for switch Sensors is 1 or 0, for RJ45 #1 it is
OID .1.3.6.1.4.1.3854.1.2.2.1.18.1.3.0
Features:
• On/Off alarm signal of airflow
• Airflow data graphically displayed over time
• Accurate, cost effective flow sensing
• 2 LEDs indicate the status of Airflow and that the sensor is
securely plugged into the ServSensor JR
• Electronics are mounted in a small plastic case
• Sensor type - open / closed contact switch
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