Siemens SITRANS Probe LU240 Ultrasonic Level Transmitter Operating Instructions

Operating instructions for the Siemens SITRANS Probe LU240 ultrasonic level transmitter with mA/HART communication, covering installation, commissioning…

Brand: Siemens
Category: Other device
Document type: User Manual
Language: English
Pages: 60
File format: PDF
File size: 582 KB
Published: 01 October, 2026
Updated: 01 October, 2026
MD5 checksum: 330272C886C7F3742970685C77E486BA
PDF: Siemens SITRANS Probe LU240 Ultrasonic Level Transmitter Operating Instructions PDF

About this manual

The SITRANS Probe LU240 is an ultrasonic level transmitter designed for industrial process measurement. This manual provides the information needed to install, connect, and commission the device safely and efficiently.

It includes safety notes, detailed installation and mounting guidance, wiring instructions, commissioning wizards, service and maintenance procedures, technical specifications, HART communication setup, and information on certificates and support.

What's inside

Getting started
Safety notes
Description
Installing/mounting
Connecting
Commissioning
Service and maintenance
Technical data
HART communication
Certificates and support

Specifications

Power supply voltage	30 V DC maximum
Signal range	4 to 20 mA
Startup current	3.6 mA maximum
Nominal power	24 V DC at maximum 550 Ω
Input current (Ii)	120 mA DC maximum
Input power (Pi)	0.8 W

Frequently asked questions

How is the device activated during commissioning?

Activation is performed in the local commissioning step 7.2.1, where the SITRANS Probe LU240 is turned on and initialized.

Download PDF (582 KB)