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スイッチ Siemens SITRANS L Pointek ULS200のPDF 取扱説明書をオンラインで閲覧またはダウンロードできます。Siemens SITRANS L Pointek ULS200 47 ページ。 Ultrasonic non-contacting switch

6.4

Low level alarm switch

This application uses the device to provide one or two low level alarms.

If the material can fall below the unit's range, the device loses the echo, and if prolonged,

defaults to fail-safe operation. The fail-safe default should be set to suit the application.

Fail-safe = 1, 2, or 3

①

Low-low (e.g. 4.5 m)

②

Low (e.g. 3.5 m)

③

Blanking (e.g. 0.5 m)

④

Range limit (e.g. 5.5 m)

Application adjustments

Alarm function

Alarm setpoint

Fail-safe alarm

Pointek ULS200

Operating Instructions, 01/2019, A5E32268616-AB

Fail-safe = 2 or 3

①

Low-low (e.g. 4.5 m)

②

Low (e.g. 3.5 m)

③

Blanking (e.g. 0.5 m)

④

Range limit (e.g. 5.5 m)

3 - low/low-low alarm

•

5 - low/LOE alarm

•

Set the low and/or low-low alarms to the desired

values.

1 - high

•

2 - low

•

3 - hold

•