Hydrocont K
page 6 of 16
Installation
The installation of the device at locations where high pressure blows can occur should be avoided.
The installation of the device should be made if possible at temperature calmed places to get a reliable
measuring result. Large temperature steps, e.g. at filling of a hot medium into a cold system, can produce a
short-time higher measuring signal deviation at the variants with ceramic measuring membrane.
At a large amplification of the measuring signal this deviation will be also amplified accordingly.
The deviation will be completely neutralized after the adaptation of the measuring membrane of the filling level
transmitter to the temperature.
At a step from +20°C ...+80°C this neutralization can wile up to 3 minutes.
The use of a process diaphragm seal can cause an essential improvement.
The installation position has influence on the measuring result of the kind of a zero value shift because of the
deadweight of the measuring membrane and a possible pressure transmitting liquid. This deviation can be
eliminated by an offset adjustment. Zero and end value must be shifted by the same amount.
Drive the system pressure free prior installation resp. deinstallation of the sensor.
The tightening of the process connection with screw-in thread may only be done at the hexagon by a suitable
spanner.
The maximum permitted torque strength is 50 Nm.
The screw in of the process connection by using the housing tube is not permitted.
Avoid the pollution of the pressure compensation vent. The hindrance of the pressure compensation can lead to
faulty measuring results.
For simplifying the system sided cable run the connection head can be arbitrary rotated after installation of the
device.
After the opening of the housing at first the electronic module must be removed.
By this the two screws, that fixes the electronic module must be released.
At pulling out the electronic module take care that the sensor cables that are connected at the bottom side of
the electronic module will not be damaged or detached.
Loosen now the three screws below and rotate the connection head into the desired orientation.
After that, fix the three screws again.
The electronic module must be inserted now and fixed with the two screws.
The correct function of the device within the specific technical data can only be guaranteed, if the permitted
temperature in the area of the connection housing (see technical data) will not be exceeded.
This can be achieved by the using a process diaphragm seal (high temperature variant – type H), by isolation of
the liquid carrying part of the plant or by other constructive measures to reduce the transferring of an extreme
temperature to the connection housing.
A process diaphragm seal (high temperature variant – type H) together with the measuring transmitter forms a
closed, calibrated system, that is filled by openings in the process diaphragm seal and in the measuring system
of the measuring transmitter. These openings are sealed and may not be opened.
Maintenance
The device is free of maintenance.
Special substances can lead to solid coatings on the membrane.
Such depositions can lead to faulty measurement results of the device.
In the case of coat forming liquids the membrane must be regularly cleaned e.g. with clear water.
Don’t use sharp tools or aggressive chemicals for cleaning.
Repair
A repair may only be carried out by the manufacturer.
If the device must be sent back for repair, the following informations must be enclosed:
An exact description of the application.
The chemical and physical characteristics of the product.
A short description of the occurred error.
Before returning the device for repair, the following measures must be proceeded:
All stick product residues must be removed. This is especially important, if the product is unhealthily, e.g.
caustic, toxic, carcinogenic, radioactive etc.
A returning must be refrained, if it is not possible by 100% to remove the unhealthily product completely,
because e.g. it is penetrate into cracks or is diffused through plastic.
