Installation sensor humdity
Fig .: The precise humidity sensor (item no. 14012) is easily connected via Plug and Play to a Didactum branded network-enabled measuring and monitoring device.

Installation Instructions IP Sensor Humidity

The IP-capable humidity sensor is used to measure and monitor the relative humidity of the air (RH). This sensor is equipped with an SNMP OID and supports a measuring range in the range of 0 to 100 percent relative humidity. The measurement of the relative humidity takes place in real time. The accuracy of this sensor - installed in the sensor housing - is +/- 5% relative humidity (RH). This sensor manufactured in the EU is factory calibrated.

Upon request, this sensor can be subsequently fine-tuned with a calibrated hygrometer. The sensor is supported by all IP based remote measuring and monitoring devices of the manufacturer Didactum. Even the discontinued predecessor remote monitoring units can be equipped with this field-proven humidity sensor.

The scope of supply of the humidity sensor consists of the following components 

  • 1 x labeled IP sensor Humidity with RJ11 / RJ12 connection
  • 1 x sensor cable with 2 meter (6,5 ft) cable length
  • 1 x screw
  • 1 x double-sided mounting tape

Choosing a suitable installation location for humidity monitoring

The humidity sensor is mounted on the ceiling or on the wall of the room. Use the screw or alternatively the double-sided mounting tape for the attachment. In rooms with significant dust exposure, the opening of the sensor should show downwards. An installation in the immediate vicinity of a heater, a radiator or hot water pipe, etc., should be avoided. Also, the sensor should not be exposed to direct sunlight or installed in the near of heat producing lighting. When mounting the humidity sensor in the 19 inch server cabinet, it must be ensured that the humidity sensor is not mounted near heat-generating power supplies. This could affect the relative humidity (RH) readings.

Connection of the sensor to the IP-based measuring and monitoring system

After mounting the humidity sensor, it is easily connected to the supplied sensor cable.

To do this, insert the plug of the cable into the RJ11 / RJ12 connection of the sensor. The other plug of the sensor cable is plugged into a free sensor port of the network enabled remote measuring and monitoring device. With the support of the Auto Sensing feature, the humidity sensor will be automatically detected and displayed in the English-language Web interface.

Note from the technical editors:

The humidity sensor can be placed on request up to 50 meters (164 ft) away from the main sensor unit. Please use only high-quality RJ11 / RJ12 patch cable.

Humidity Monitoring Warehouse
Fig .: The humidity sensor can be individually configured in the web interface of the remote measuring and monitoring unit. Define an individual name (e.g. " Humidity Monitoring Pharmaceutical Warehouse Chicago").
Then we define the individual limits and threshold values ??in terms of humidity of the room air. This is done by mouse pointer or by direct input of the needed humidity values. Under ID, the SNMP OID of the humidity sensor is shown. The current state as well as the measured humidity value - measured in real time - are also displayed. After we have configured the sensor, we simply click on "Apply".

Configuration of the humidity sensor

After the humidity sensor has been connected to the main sensor unit, we log in with the web-based measuring and monitoring device using the web browser of our smartphone, tablet, PC or laptop.

automatic dew point calculation
Fig .: Each network-enabled remote measuring and monitoring device from manufacturer Didactum can automatically calculate the dew point and report a critical physical state via SNMP trap, e-mail, or SMS (* via GSM / LTE modem or via Web to SMS server) ,
Graphical visualization of humidity values
Fig .: Each networked remote measuring device of the manufacturer Didactum can even display the measured data values graphically. Recognize whether the temperature and humidity are within an optimal range. The measurement data required for checklists and reports, etc. can be exported directly and e.g. be edited with Microsoft Excel.

Automatic Dew Point Calculation

If you additionally connect the precise temperature sensor) to your network-enabled remote measuring and monitoring device. If desired, the dew point is calculated automatically. To do this, please click on the "+" sign in the upper left of the web interface and simply add the element "Dew point calculation". Here you select the temperature and humidity sensor required for the dew point calculation. Set individual threshold and warning values.

critical humidity alert
Fig .: In the "Logical Schemes" of the monitoring device, we set the desired alerts if the relative humidity in the warehouse is too low or too high. Then we name the rule as " Humidity Alert Pharmaceutical Warehouse Chicago".

Notifications and alerts in case of critical humidity

If the humidity of the air (RH) is critical, the responsible employees will receive a proactive notification by e-mail, SMS * or SNMP trap to the building or network management software. If desired, an impending static discharge of the air or an incipient condensation can also be reported via an optional alarm siren. All events are stored in the event log.