Aplisens SGE-25 Benutzerhandbuch - Seite 12

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7. PLACE OF INSTALLATION

7.1.

The level probes installed in places where liquid levels are measured in wells, swimming pools, tanks,

boreholes etc. The probe is immersed in the medium being measured. A special cable extends above the

level of the medium; this can be connected directly to another device or to a terminal box.

7.2. High and Low Ambient Temperatures and Medium Temperatures.

When measuring liquids whose solidification point is above the ambient temperature, the medium should not

be allowed to freeze around the probe, this applies in particular to water in the case of open-air installations.

For maximum medium temperatures see sect. 5.

Data for versions Ex in accordance with Appendix Ex.03, Appendix Ex.04.

INSTALLATION AND CONNECTION

8.1. Mechanical Installation

The probe can be suspended from the power supply cable, but where there is a danger that it may catch on

protruding elements it is recommended that the probe be suspended on a steel cable using the supporting

handle(not applicable to SGE-16). If the cable is to be exposed to current or turbulence, it should be installed

in a protective tube, e.g. one made from PCV.

Directly before location the probe in measured medium to take off from diaphragm seals

SGE-25S, SGE-25S.SMART, SGE-25C the securing cover.

The probe with an additional Teflon shield suspend on a steel cable or on a internal cable (do not catch

for teflon).

The probe in Ex-version with a cord for earthing suspend on a steel cable using the lifting handle

8.2. Electrical Connection.

The method of making electrical connections is shown in figure 2, 3 (for Ex version in figure 3 „Appendix Ex").

If the transmission line leads to remote premises via the open air, it is recommended that a terminal box, be

fitted, e. g. the Aplisens type PP, in order to connect the probe's cable to the remaining section of the

transmission line. The box should have an IP65 ingress protection rating, and but should not be so airtight as

to prevent the probe's active sensing device from "breathing" via a capillary embedded in the cable.

The opening of the capillary should not be allowed to become dirty, and water should not be allowed to enter

the capillary.

Where the transmission line is very long, it is recommended that the section leading from the end of the probe

cable be made from twisted pair cable, and it is desirable that entry points to other devices be fitted with

excess voltage protection, e. g. the Aplisens UZ-2 system.

The cable of the probe and the remaining section of the transmission line should be protected from

mechanical damage.

9. SETTINGS AND REGULATION.

9.1. Settings of SGE-25, SGE-16, SG-25C and SGE-25S probes

The SGE-25, SGE-16, SGE-25C and SGE-25S are factory set to the range stated in the order. The user does

not have access to the "zero" and "range" potentiometers. Setting may be adjusted by the manufacturer only.

9.2. Settings of SGE-25.SMART, SGE-25S.SMART probes

In SGE-25.SMART and SGE-25S.SMART probes with smart electronic, user can make e.g. set „zero" and

measurement ranges.

9.3. SGE-25.SMART, SGE-25S.SMART. Measurement ranges. Definitions.

9.3.1.

The maximum range of level, while the probe can measure is called „basic range" (for specifications

of " basic range" see 5.1.1.).

The width of the basic range is the difference between the upper and lower limits of the basic range.

The internal characteristic conversion curve for the basic range is coded in the probe's memory.

This is the reference curve used when making any adjustments which affect the probe's output signal.

DTR.SG...04

(ENG)