Temperature & Humidity Monitoring Sensor Probe

Power Over Ethernet (PoE) - Web - Modbus - SNMP - SNMP Traps - Email - SMS - Voice Call - Rack Mountable - Industrial Grade
Temperature & Humidity Sensor

external temperature & humidity probe

Click for a 360 virtual tour of the temperature & humidity sensor
no pc required for the ServersCheck to operate once configured Not only temperature affects systems performance but also humidity can cause rapid deterioration of systems. Monitoring humidity in a data center is as important as monitoring temperature! Too low humidity may result in ESD causing immediate permant equipment damage. Too high humidity could create corrosion on components, a slow and often irrevirsible process.

ServersCheck offers a sensor for monitoring not only humidity but also temperature 24x7. It is a digital thermometer and hygrometer with a high acurracy as per specs below. The sensors are factory calibrated.
The ENV-THUM sensor connects to the Sensorgateway, the base unit. This makes the device an ethernet temperature & humidity sensor. The temperature & humidity sensor measures the relative humidity (0 and 100 % RH) and temperature (-40 C and +75 C, -40 F to +167 F) with improved resolution. This sensor is designed to monitor conditions in server rooms and other sensitive area's. Humidity reading is done through the external probe. Alerts can be generated via email, SMS, voice call, SNMP and Modbus TCP.

Technical Specifications - Temperature & Humidity Sensor Probe (ENV-THUM)
Temperature & Humidity sensor small Temperature Resolution: 0.1C (0.18)F precision
Temperature Accuracy: +/- 0.5C (+/- 0.9 F) over 0C to +60C
Readings in Celsius or Fahrenheit
Relative Humidity Measurement Range: 0 to 100 % RH
Relative Humidity Resolution or precision: 0.1 % RH and 1 % RH
Relative Humidity Accuracy: +/- 2 % RH between 10 % RH to 90 % RH and +/- 4 % RH below 10 % RH and above 90 % RH
Relative Humidity Long Term Stability: < 1 % RH/year
Operating temperature range: 0C to +75C (32F to +167F) in PoE mode
Operating humidity range: < 90% rH (non-condensating)
Dimensions: 74 mm (2.9") x 66 mm (2.59") x 22 mm (0.8")
Housing: Orange metal case with status led
SensorGateway small Sensor connects to & is managed by the SensorGateway. Requires the latest generation of SensorGateway (v5.1)
Communication protocols to probe through SensorGateway: SNMPv2,v3 XML HTTP and Modbus TCP
RJ45 small Connects via regular straight RJ45 cable to the SensorGateway.
Maxmimum distance between probe and SensorGateway is 10m/33ft
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Tips For Avoiding Humidity-Related Server Damage

While most servers will support non-operating humidity in the range of 90%, actual operating tolerances are quite a bit lower. And while humidity in the air isn't necessarily a problem, "condensing humidity", which is water vapor that turns to actual water droplets, can short out a server as quickly as if you had squirted it with a water hose.

Too low humidity levels allow for the build up of static electricity. This static electricity can result in permanent equipment damage by simply touching the equipment and causing an ESD discharge.

Humidity conditions are directly related to the temperature in the server room. Water vapor begins to condense once the ambient temperature reaches the "dew point". Because temperatures can vary widely during the day and night, your computer room's dew point changes regularly. This means that you can go from normal operations, to "meltdown" in a matter of minutes.

That's why it's important to have a 24/7 humidity monitoring and reporting system running in your NOC.

One of the easiest ways to ensure that condensing humidity does not take your network down is to install a humidity monitoring device and pair it up with the current generation of monitoring and reporting tools, like our ENV-THUM sensor.

When the base unit with attached sensor detects humidity levels that are above your pre-defined tolerances, it can alert multiple people via email, SMS and voice calls. Via Modbus TCP it will integrate with Building Management Systems. Through SNMP the sensor can be integrated with NOC network management systems.