Tecsis PEX17 Betriebsanleitung Seite 23

7. Starting, operation
When mounting the instrument, ensure that the sealing faces of the instrument and
„
the measuring point are clean and undamaged.
Screw in or unscrew the instrument only via the flats using a suitable tool and the
„
prescribed torque. The appropriate torque depends on the dimension of the pressure
connection and on the sealing element used (form/material). Do not use the case as
working surface for screwing in or unscrewing the instrument.
When screwing the sensor in, ensure that the threads are not jammed.
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Do not torque the process controller with a force greater than 36,9 foot pounds
„
(50 Nm).
„
Warning
„
Observe the permissible surface temperature applicable for this range according to the
„
defined temperature classes.
Electrical connection
!
Warning
„
Warning
Connect the instrument to a power supply that is equipped with a protective measure to
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IEC 60364-4-41 (DN VDE 0100-410).
Betriebsanleitung/Operating instructions
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Protect the diaphragm against any contact with abrasive substances and
pressure peaks and do not touch it with tools. If you damage the diaphragm,
no intrinsic safety can be guaranteed (ATEX)!
Do not use the pressure sensor out of the temperature range from
-40 ... +105 °C / -40 ... +221 °F. Out of this range there is no explosion
protection ensured.
Earth the housing through the process connection to protect the sensor from
electromagnetic fields and electrostatic discharge.
Ground the cable screen at one end, preferably in the safe, thus non-Ex, area
(EN 60079-14). For sensors with flying leads, the screen is connected to the
case. The simultaneous connection of case and cable screen to ground is only
permitted if ground loop problems between the screen connection (e.g. at the
power supply) and case can be excluded (see EN 60079-14).
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