EASZ-2 Manual v1.12 - 12.2.2018 Page 10 / 30
4.3. Mounting
4.3.1. Prior to mounting the EASZ-2 Unit check:
1) That all the project documentation (mounting points, cable specification, cable runs, junction boxes,
strain relief, configuration settings) is available and that the installation conforms to the
documentation.
2) That all the units are of the correct variant with the correct sensor pipe, sampling quill and insert mixer
according to the project documentation.
3) The cable glands supplied with the EASZ-2 are NPT ¾” HSK-Ex-D (Cable diameter 13-18 mm).
Alternative cable glands can be used providing they meet the approved level of safety. If using
alternative glands ensure they comply with the hazardous environment certificate.
4) If using NPT ¾”HSK-M-Ex-D glands both the EASZ-2 and cabling must be in a stationary installation.
5) That all unused cable glands are removed and replaced with special Ex plugs.
4.3.2. Actual Installation
When using EASZ-2Ex, the body is a flameproof enclosure and must NOT be modified in any way
(by drilling holes, milling surfaces or welding).
When mounting the unit care must be taken to avoid any physical damage and mechanical shocks to the
unit. Care must also be taken to avoid any damage to the viewing window.
Do NOT turn the Body of the unit against the Sensor Pipe, this connection is factory tested and any
damage will invalidate the warranty.
When installing the unit into an existing pipeline with petroleum products use protective rubber gloves and
protect your face using a safety visor.
If you have received a version with an integral Pre-mixer it is important to follow the arrow markings on
the case to ensure that the unit and mixer are in the same direction as the pipeline. When used in
conjunction with a static mixer ensure a minimum flow rate. If the unit is installed in a bypass engineered
by others, it is important to ensure that whatever is flowing through the bypass is adequately mixed and
that the design ensures a positive and minimum flow rate through the bypass. An incorrectly designed
bypass could restricted flow, if you require engineering assistance on bypass design, consult EESIFLO.
4.4. Electrical Connection and Configuration
WARNING: do NOT open the unit if energized!
The electrical connection must comply with local standards and regulations and persons carrying out the
work must be appropriately trained and qualified.
When using EASZ-2Ex, the installation of the unit must comply with EN 60079-14, in particular § 12.
When using EASZ-2Ex, the supply and input / output circuits can only be connected to intrinsically
safe circuits with equipment Ex marking “Ex db ia [ib Gb] IIB T4 Ga/Gb” or only to circuits which are in
accordance with standard IEC 60664-1 overvoltage category I/II for equipment with Ex marking “Ex
db ia IIB T4 Ga/Gb”. A combination of equipment is NOT permissible.
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