Intrinsically Safe Humidity and Temperature Sensor
EE100Ex
The EE100Ex intrinsically safe sensor is dedicated for measurement of relative humidity [RH] and temperature [T] in explosion hazard areas. It complies with the ATEX (Europe), IECEx (international), Korea (KCs) and Japan (CSA) classifications for application in gas up to Zone 1.
Measurement Performance
With the very robust sensing head, the proprietary sensor protection and the encapsulated measurement electronics inside the probe, the EE100Ex stands for best accuracy and long term stability.
Reliable in Harsh Environment
Due to the robust metal IP65 enclosure and the wide choice of filter caps, the EE100Ex performs reliably in demanding applications such as utility tunnels, hazardous storage rooms or pharmaceutical industry.
Power Supply and Outputs
Besides measurement of relative humidity and temperature, the EE100Ex calculates dew point [Tf] and frost point temperature [Td]. The intrinsically safe humidity and temperature sensor features two galvanically isolated 4-20 mA outputs in 2-wire technology.
Typical Applications
- Explosive, hazardous storage rooms
- Utility tunnels
- Pharmaceutical industry
- Approved for installation in gas Zone 1
- Robust sensing head
- IP65 aluminum enclosure
- Measuring range
- 0...100% RH-40...60 °C (-40…140 °F)
- Accuracy
- ±2% RH±0.2 °C (±0.36 °F)
- Output
- 4-20 mA (2-wire)
- Supply
- 24 V DC
Custom solutions for precise results
For more than 40 years, E+E Elektronik has been developing and manufacturing its highly precise and long-term stable sensors exclusively at its headquarters in Engerwitzdorf, Austria. The high level of vertical integration – from the sensor element to the precisely calibrated measuring device – ensures compliance with the highest quality standards and enables a quick response to customer-specific requirements.
E+E Elektronik offers:
- Accredited sensor calibration for the highest quality standards
- Efficient service – worldwide through local offices
- Short delivery times

FAQ
Transmitter with "two-wire" technology receive the power from the process, and the signal is carried on return wire (closed current loop). With "three-wires" technology the power supply is separate from current output: 2 wires are the power supply and the third carries the signal.
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