Operating instructions

2. TECHNICAL DESCRIPTION

2.1 General

The entire EE300Ex transmitter can be installed directly in the explosion hazard area.

The EE300Ex is the ideal transmitter in challenging industrial applications. The housing and

measurement sensor made from stainless steel, as well as the proven E+E humidity sensors,

ensure reliable and stable measurement results over long periods.

The EE300Ex has a 2-wire design and has two individually scalable analogue outputs with

4…20mA. In addition to the measured values for relative humidity and temperature, the

transmitter also delivers the following calculated values:

• Absolute humidity dv

• Wet-bulb temperature Tw

• Specific enthalpy h

• Dew-point temperature Td

• Frost point temperature Tf

• Mixing ratio r

• Water vapour partial pressure e

• Water activity aw

• Water content in mineral transformer oil x [ppm]

• Water content in customer-specific oil x [ppm]

The EE300Ex-HT humidity / temperature transmitter is available in the following designs:

The EE300Ex-xT temperature transmitter is available in the following designs:

Model pressure range working range Ø-probe

A - wall mounting -40...60°C

(-40...140°F) 12mm (0.47“)

E -

remote sensing probe up to 20bar (300psi) 0.1...20 bar

(1.5...300 psi) -40...180°C (-40...356°F) 12mm (0.47“)

remote sensing probe up to 20bar (300psi) with move-

able fitting for assembly / disassembly under pressure

0.1...20 bar (1.5...300 psi) -40...180°C (-40...356°F) 13mm (0.51“)

M - remote sensing probe up to 300bar (4351psi) 0.01...300 bar (0.15...4351 psi) -40...180°C (-40...356°F) 12mm (0.47“)

U - remote sensing probe for sensor retraction tool PN250 0.01...300 bar (0.15...4351 psi) -40...180°C (-40...356°F) 12/15 (0.47/0.59)

Model pressure range working range Ø-probe

A - wall mounting -40...60°C

(-40...140°F) 6mm (0.24“)

M - remote sensing probe 0.1...20bar (1.5...300psi) -70...200°C (-94...392°F) 6mm (0.24“)