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2
Product Description
2.1
General
The EE300Ex-M1 and the EE300Ex-M3 intrinsically safe sensors are intended for the measurement of
relative humidity (RH) and temperature (T) or temperature alone, in the explosion hazard areas, in gas
and dust up to Zone 0/20. The entire device can be placed in the explosion endangered area.
The sensor may only be powered by an intrinsically safe power supply device or protective barriers.
It features a 2 wire 4...20 mA design and has two individually scalable analogue outputs.
In addition to the measured RH and T, the EE300Ex-M1 calculates also the following parameters:
• Absolute humidity
• Wet-bulb temperature
• Specific enthalpy
• Dew point temperature
• Frost point temperature
• Mixing ratio
• Water vapour partial pressure e
Besides measurement in the air, the EE300Ex-M1 with ATEX or IECEx approval is also suitable for
measuring water content (X) in ppm and water activity (aw) in isolation, lubrication and
hydraulic oils.
EE300Ex-M1 humidity and temperature sensor types:
Type
T1 Wall mount
T7 Remote probe with cut-in fitting, pressure tight
T9 Remote probe with cut-in fitting, pressure tight
T10 Remote probe with sliding fitting for assembly /
disassembly under pressure, pressure tight
T22 Remote probe for sensor retraction tool PN250,
pressure tight
EE300Ex-M3 temperature sensor models:
Type
T1 Wall mount
T24 Remote probe
Disclaimer
The manufacturer cannot be held responsible for damages as a result of incorrect handling, installation
and maintenance of the device. Unauthorized modifications of the product lead to loss of all warranty
claims.
The manufacturer or his authorized agent can be only be held liable in case of willful or gross negli-
gence. In any case, the scope of liability is limited to the corresponding amount of the order issued to
the manufacturer. The manufacturer assumes no liability for damages incurred due to failure to comply
with the applicable regulations, operating instructions or the operating conditions. Consequential dam-
ages are excluded from the liability.
6
dv
Tw
h
Td
Tf
r
Pressure range
ambient
0.1...20 bar
(1.5...300 psi)
0.01...300 bar
(0.15...4 351 psi)
0.1...20 bar
(1.5...300 psi)
0.01...250 bar
(0.15...3 626 psi)
Pressure range
ambient
0.1...20 bar
(1.5...300 psi)
Temperature range
-40...60 °C
(-40...140 °F)
-40...180 °C
(-40...356 °F)
-40...180 °C
(-40...356 °F)
-40...180 °C
(-40...356 °F)
-40...180 °C
(-40...356 °F)
Temperature range
-40...60 °C
(-40...140 °F)
-70...200 °C
(-94...392 °F)
User Manual EE300Ex Humidity / Temperature Sensor
Probe Ø)
12 mm
(0.47")
12 mm
(0.47")
12 mm
(0.47")
13 mm
(0.51")
12 mm
(0.47")
Probe Ø)
6 mm
(0.24")
6 mm
(0.24")
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