Siemens sitrans PROBE LU User Manual

7ML19985JB02 SITRANS Probe LU (PROFIBUS PA) – INSTRUCTION MANUAL Page 7
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Specifications
Specifications
SITRANS Probe LU (PROFIBUS PA)
Power
• Bus powered On PROFIBUS PA, as per IEC 61158-2
• Current consumed 12, 13, 15, or 20 mA, depending on programming
1
Performance
Reference operating conditions according to IEC 60770-1
• ambient temperature +15 to +25 °C
• humidity 45 to 75 % relative humidity
• ambient pressure 860 to 1060 mbar
Measurement accuracy (measured in accordance with IEC 60770-1)
• non-linearity (accuracy) the greater of 6 mm (0.25") or 0.15% of span [including
hysteresis and repeatability]
• non-repeatability 3 mm (0.12") [included in non-linearity specification]
• deadband (resolution) 3 mm (0.12") [included in non-linearity specification]
• hysteresis error 0 mm
Frequency 54 KHz
Measurement range
2
• 6 m (20 ft) model: 0.25 m to 6 m (10" to 20 ft) liquid
• 12 m (40 ft) model: 0.25 m to 12 m (10" to 40 ft) liquid
Near Range (blanking)
3
0.25 m (10")
Note: Siemens makes every attempt to ensure the accuracy of these specifications
but reserves the right to change them at any time.
1.
See PROFIBUS Current Consumption on page 79 for details.
2.
Reference point for measurement is the transducer face.
3.
For details, see Near Range (Blanking) on page 37.

Siemens sitrans PROBE LU Specifications

General

Measuring Principle	Ultrasonic
Communication	HART
Output	4 to 20 mA
Power Supply	12 to 30 V DC
Process Temperature	-40 to 80 °C
Enclosure Rating	IP68
Material	PVDF
Ambient Temperature	-40 to 70 °C
Measurement Range	0.25 to 12 m (0.8 to 39 ft)