User's Manual

7ML19985KB01 SITRANS LR560 (mA/HART) – INSTRUCTION MANUAL Page 7
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Specifications
Specifications
Power
• Maximum 30 V DC
• 4 to 20 mA loop power
Performance
Reference operating conditions according to IEC 60770-1
• ambient temperature +15 to +25 °C (+59 to +77 °F)
• humidity 45% to 75% relative humidity
• ambient pressure 860 to 1060 mbar g (86 000 to 106 000 N/m
2
g)
Measurement Accuracy
1)
(measured in accordance with IEC 60770-1)
• Maximum measured error - Greater of 25 mm (1") or 0.25 % of range from
minimum detectable distance to full range
Frequency 78 to 79 GHz FMCW
Max. measurement range
2)
• 40 m version 40 m (131 ft)
• 100 m version 100 m (328 ft)
Min. detectable distance 300 mm (11.8") from sensor reference point
3)
Update time
4)
maximum 10 seconds, depending on setting for
Response Rate (2.4.1.)
Influence of ambient temperature < 0.003%/K (average over full temperature range,
referenced to maximum range)
Dielectric constant of material measured
• for ranges up to 20 m (65.6 ft) minimum dK = 1.6
• for ranges up to 100 m (328 ft) minimum dK = 2.5
Note: Siemens Milltronics makes every attempt to ensure the accuracy of these
specifications but reserves the right to change them at any time.
Nominal 24 V DC with
max. 550 Ohm loop resis-
tance:
For other configurations, see the chart under Loop
power on page 132
1)
Reference conditions: Position Detect (2.7.3.3.) set to Center and Algorithm (2.7.3.1.) set to
True First Echo.
2)
From sensor reference point.
3)
See Dimensions on page 11.
4)
Reference conditions: Response Rate (2.4.1.) set to FAST