Endress+Hauser HART Proline Promass 500, Special Documentation

Page: 17 / 52

Proline Promass 500 Safety function
Hauser 17
5.2.2 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
5.2.3 Suitability of the measuring device
1. Carefully select the nominal diameter of the measuring device 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 a limit value for monitoring the
minimum flow that is not less than 5 % of the specified maximum value of the sensor.
NOTICE
Use the measuring device according to the specifications.
‣
Pay attention to the medium properties and the environmental conditions.
‣
Carefully follow instructions pertaining to critical process situations and installation
conditions.
Detailed information on:
• Installation
• Electrical connection
• Medium properties
• Environment
• Process
Operating Instructions and Technical Information →  11