Proline Prosonic Flow P 500 HART
Safety function
Hauser
13
4.2.2
Useful lifetime of electric components
The established failure rates of electrical components apply for a useful lifetime of 12 years as
per IEC 61508-2: 2010, section 7.4.9.5, note 3.
The device's year of manufacture is coded in the first character of the serial number (→ table
below).
Example: serial number
L
5ABBF02000 → year of manufacture 2016
ASCII character
Meaning
ASCII character
Meaning
ASCII character
Meaning
D
2010
K
2015
R
2020
E
2011
L
2016
S
2021
F
2012
M
2017
T
2022
H
2013
N
2018
V
2023
J
2014
P
2019
W
2024
4.2.3
Suitability of the measuring device
1. Carefully select the frequency of the sensor set in accordance with the application's
expected flow rates.
The maximum flow rate during operation must not exceed the specified maximum
value for the sensor.
2. In safety-related applications, it is advisable to select the limit value for monitoring a
minimum flow such that this limit is at least twice the smallest specified flow that can
still be measured, with the actual medium.
For further information, see the Technical Information
3. The sound velocity of the medium must be in the 600 to 2
100 m/s range.
4. The additional measuring uncertainties in the event of an error apply for
Reynolds numbers > 10000. SIL mode is not recommended for
Reynolds numbers < 10000.
