RMS-I-STH Temperature/Humidity Sensor

The dual sensor has both temperature and humidity measuring capabilities in a single sensor.This means a

single port can have two sensors, saving ports for additional sensors.A specially designed CAT 5 cable assures

a correct reading up to 100 feet, and is in standard length 30cm.When the dual sensor is plugged into the RJ-45

port, the system will auto detect the sensor, and it will display Temperature and Humidity for each port to which

a dual sensor is connected. A built in graph option is available on the system for graphing temperature and

humidity variations over a period of time.

The SNMP OID for the temperature sensor on RJ45#1 is .1.3.6.1.4.1.3854.1.2.2.1.16.1.3.0

The SNMP OID for the humidity sensor on RJ45#1 is .1.3.6.1.4.1.3854.1.2.2.1.17.1.3.0

Specifications & Features

Temperature

• Measurement range Celsius: -40°C to +75°C
• Measurement resolution Celsius: 1°C
• Measurement accuracy Celsius: ±0.2°C accuracy from -10°C to +75°C
• Measurement range Fahrenheit: -67°F to +167°F
• Measurement resolution Fahrenheit: 1°F increments.
• Measurement accuracy Fahrenheit: ±0.4°F accuracy from +14°F to +167°F

Humidity

• Measurement range: 0 to 100% Relative humidity
• Sensor element wettable without damage
• Resolution: 0.5 %
• Accuracy at 25°C ±5%,
• Working Range -20°C +60°C
• Communications cable: RJ-45 jack to dual sensor using UTP Cat 5 cable.
• Power source: powered by the RAMOS. No additional power needed.
• The RAMOS auto detects the presence of the dual sensor
• Up to 8 dual sensors per RAMOS Optima
• Up to 500 temperature sensors per RAMOS Ultra using expanders
• Full Autosense including disconnect alarm

Configuring the Dual sensor:

On the device click on “Sensors” tab and when you move with cursor on “Dual sensor” , the window shown below

will pop up. Then select the emperature or humidity sensor. Since all of Cone’s intelligent sensors are configured

similarly, not every field is described below. The descriptions below describe the fields which are specific to the

humidity sensor.

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 the temperature sensor on RJ45#1 is .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 read-only field. This is an integer SNMP OID field

which has a precision of 1 degree. The value can be polled via SNMP, and the data can be used to graph the

temperature variations. The value displayed can be in Fahrenheit or Celsius. If communication to the temperature

sensor is lost, the sensor value -512 will be returned by a snmpget.

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 system stores the thresholds for both Celsius and

Fahrenheit independently allowing you to switch between the two.

Reading Offset: The Reading Offset parameter can be used to calibrate temperature and humidity sensors

sensors. If for example the actual reading of a sensor is 28 degrees Celsius and the Reading Offset is set to 2

the temperature will be displayed as 30 degrees Celsius.