Siemens SITRANS LT500 - User Interfaces; Outputs

Technical specifications
8.3 User Interfaces
SITRANS LT500 with ultrasonic transducer inputs
104 Compact Operating Instructions, 02/2024, A5E52021877-AA
8.3 User Interfaces
Configuration
Local buttons
Display (local)
Advanced graphical liquid crystal display
Connectors
• USB Service port
– USB version: V2.0
– USB socket: Mini-B
• Accessory port
USB port used for
SIMATIC PDM/SITRANS DTM, FW up-
date, Data log extract
8.4 Outputs
mA analog active output
• Single-point version includes one mA output
• Dual-point version includes two mA outputs
• 0 to 20 mA
• 4 to 20 mA
• Accuracy
– ± 20 uA, over 3.5 to 22.6 mA
– ± 40 uA, below 3.5 mA
• Resolution 3 uA, over 0.1 to 22.6 mA maxi-
mum
• 750 ohm maximum
• Isolated (500 V DC)
Relays
1)
• Six, maximum
2)
• 4 control
• 2 alarm control
• All relays rated 5A at 250 V AC, non-inductive
Control relay
4 Form A, NO relay (numbers 1, 2, 4, 5)
Alarm relay
2 Form C, NO, or NC relay (numbers 3, 6)
Optional analog channel on the HART communi-
cation card
0 to 20 mA without HART
4 to 20 mA with HART:
• Passive - 14 to 30 V (at the terminals),
500 ohm maximum
• Active - 350 ohm maximum
1)
All relays are certified only for use with equipment that fails in a state at or under the rated
maximums of the relays.
2)
Orderable with 1, 3, or 6 relays