Druck STE Installation Guide
GE
Sensing
Druck STE
Installation and Operation Notes
K0255
These notes detail procedures to
install and maintain the Druck STE
with the minimum of work. Review
and become familiar with the whole
installation procedure before
beginning installation.
The Druck STE is a sensor
termination enclosure providing
connections between a ‘vented’
Druck sensor cable and a nonvented instrument cable. It allows
barometric pressure reference to
enter the enclosure while preventing
ingress of water/humidity.
© The General Electric Company. All
rights reserved.
DIN rail
Cable
gland
Terminal block
Goretex
filter
Cable
gland
Enclosure
Adhesive
pads
with
retaining arms
Desiccator can
do not remove
from plastic
packaging
Lid
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K0255 Issue No. 2
Installation Instructions
Preparation
1. Unscrew the four captive screws securing the lid. Remove the
lid.
2. Remove the desiccator can and leave it in the sealed plastic
bag.
3. The unit must be mounted vertically on a suitable surface and
secured by four M4 screws (not supplied). Use the template to
mark the surface for locating the screws.
4. Insert the sensor cable through the cable gland. Cut the cable
to the required length and cut back the outer sheath also to the
required length. Cut back the insulation on each wire enough to
fit the conductors into the terminal block.
5. Connect the wires into the terminal block in accordance with
the sensor installation instructions. Make sure the nylon vent
tube is not damaged or blocked.
6. Torque tighten the cable gland to 2.5 Nm. Alternatively, using
two 19 mm spanners, tighten the cable gland to just beyond
hand tight.
Note: Make sure the cable gland grips the cable securely.
7. Repeat steps 4 to 6 for the non-vented instrument cable.
Note: There must be good continuity between the earth (ground) cables
of the sensor and non-vented instrument cable to make sure of good RFI/
EMC protection.
8. Check the Goretex filter is free from debris and water.
9. Remove the desiccator can from the sealed plastic bag. Fit
the desiccator can in the lid.
10. Make sure the gasket is in the groove of the lid. Fit the lid on
the enclosure and secure with the four captive screws.
K0255 Issue No. 2
Maintenance
The following periodic checks should be made at the
recommended intervals of 90 days (four times per year).
Procedure
1. Visually inspect the window in the unit. If the window
changes from blue to pink, the desiccator can requires changing
or drying.
Note: The desiccator can absorbs moisture within the unit. It has a very
high capacity. The changing or drying requirement depends on the
environmental conditions and location of the unit. The recommended
interval may need to be changed.
Changing the desiccator can
2. Remove the desiccator can. Fit the adhesive pads to the new
desiccator can and locate in the lid.
Drying the desiccator can
CAUTION: U
DAMAGE THE DESICCANT.
SING A MICROWAVE OVEN OF 900 WATTS AND ABOVE CAN
3. Remove the desiccator can. Place the desiccator can in a
microwave oven and heat for intervals of three minutes at full
power until the indicator window turns blue. Fit the adhesive
pads to the desiccator can and locate in the lid.
Goretex filter
4. Inspect the outside face of the Goretex filter, make sure the
filter is free from dirt and moisture.
If necessary, remove any dirt or moisture.
Cleaning
5. Inspect the inside and outside of the unit and, clean if
necessary, using a dry, lint-free cloth.
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