822-1002-C01 datasheet(7/40 Pages) MAGNETROL

7 / 40 page

50-621 Kotron Sentinel Models 822, 832 and 842 RF Point Level Switches

1.4.1 Horizontal Mounting

Alarm (narrow differential) applications only

Horizontally mounted probes provide a high degree of sen-

sitivity for use with non-conductive liquids as only approx-

imately 0.5 inches (12 mm) of level change is required to

completely cover (or uncover) the probe.

Horizontally mounted probes should be installed so that

the probe is parallel to and at the level at which the

control point is desired. Refer to Figure 1.

Avoid any installation method in which the material may

become trapped in the mounting nozzle, thus preventing

the probe from signaling when the level recedes. Refer to

Figures 2 and 3.

NOTE: If nozzle mounting is unavoidable, the probe must be installed

with an inactive metal sheath having a length of at least 1 inch

(25 mm) greater than length of the nozzle. A sheath is required

to render the length of the probe within nozzle insensitive to

capacitance change. Refer to Figure 2.

Guarded Probe

Unit will signal at probe level. Refer to Figures 4 and 5.

NOTE: The guard element must be located outside of the nozzle.

Do not horizontally mount the unit in a nozzle deeper than

3 inches (75 mm). Refer to Figure 5. The medium may buildup

in the nozzle and cause false activation.

Alternate Horizontal Mounting

On applications involving viscous liquids or materials

which tend to cling or buildup, horizontally mounted

probes should be installed at a slight downward angle to

allow material to drain from probe rod. With this type of

installation, the packing gland face of probe assembly

should extend into the tank (or vessel). Refer to Figure 6.

1.4.2 Vertical Mounting

Vertically mounted probes provide the capability to adjust

the control point up or down a section of probe rod by

means of calibration adjustments within the unit.

Vertically mounted probes should be installed so that the

end of the probe rod is at least 2 inches (50 mm) below

the lowest desired level control point with conductive

materials or 4 inches (100 mm) below the lowest desired

level control point with non-conductive materials. Refer to

Figure 7 on page 5.

Figure 1

Recommended Horizontal Mounting

Figure 2

Recommended Mounting with Nozzle

Figure 3

Not recommended

Figure 4

Recommended Horizontal Mounting

Figure 5

Recommended Horizontal Mounting

Figure 6

Alternate Horizontal Mounting

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