Smartec CLD18

6

Endress+Hauser

Repeatability

Conductivity:

max. 0.5 % of measured value ± 5 µS/cm ± 2 digits

Cell constant

11.0 cm-1

Temperature compensation

Range

–10 to 130 °C (14 to 266 °F)

Types of compensation

• None

• Linear with user-configurable temperature coefficient

Reference temperature

25 °C (77 °F)

Installation

Mounting instructions

Hygienic requirements

‣ Easily cleanable installation of equipment according to the criteria of the EHEDG must be free of

dead legs.

‣ If a dead leg is unavoidable, it shall be kept as short as possible. Under no circumstances shall the

length of a dead leg L exceed the pipe’s inner diameter D minus the equipment’s enveloping

diameter d. The condition L ≤ D – d applies.

‣ Furthermore, the dead leg must be self-draining, so neither product nor process fluids are

retained therein.

‣ Within tank installations, the cleaning device must be located so that it directly flushes the dead

leg.

‣ For further reference, see the recommendations concerning hygienic seals and installations in

EHEDG Doc. 10 and the Position Paper: “Easy cleanable Pipe couplings and Process connections”.

For 3-A-compliant installation, please observe the following:

‣ After the device has been mounted, hygienic integrity must be guaranteed.

‣ The leakage hole must be located at the lowest point on the device.

‣ 3-A-compliant process connections must be used.

Orientations

The sensor must be completely immersed in the medium. Avoid air bubbles in the area of the sensor.

A0037970

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Orientation of conductivity sensors. Engineering unit: m (ft)

Changes in the flow direction (after pipe bends) can cause turbulence in the medium.

1. Install the sensor at a distance of at least 1 m (3.3 ft) downstream from a pipe bend.

2. When installing, align the sensor in such a way that the medium flows through the flow

opening of the sensor in the direction of medium flow. The sensor head must be completely

immersed in the medium.