Endress+Hauser Proline t-mass 65 - Safety Instructions

Proline t-mass 65 Safety instructions
Endress+Hauser
3
1 Safety instructions
1.1 Designated use
• The measuring device works based on the thermal measuring principle and is to be used
exclusively for measuring the mass flow of gases.
• The measuring device can be configured to measure pure gases (e.g. oxygen, nitrogen, carbon
dioxide, argon etc.) or gas mixtures (e.g. natural gas).
• Any use other than that described here compromises the safety of persons and the entire
measuring system and is, therefore, not permitted.
• The manufacturer is not liable for damage caused by improper or non-designated use.
1.2 Installation, commissioning and operation
• The measuring device must only be installed, connected, commissioned and maintained by
qualified and authorized specialists (e.g. electrical technicians) in full compliance with the
instructions in these Brief Operating Instructions, the applicable norms, legal regulations and
certificates (depending on the application).
• The specialists must have read and understood these Brief Operating Instructions and must
follow the instructions they contain. If you are unclear on anything in these Brief Operating
Instructions, you must read the Operating Instructions (on the CD-ROM). The Operating
Instructions provide detailed information on the measuring device.
• The measuring device may only be modified or repaired if such work is expressly permitted
in the Operating Instructions (on the CD-ROM).
• If performing welding work on the piping, the welding unit may not be grounded by means
of the measuring device.
1.3 Operational safety
• The measuring device is designed to meet state-of-the-art safety requirements, has been
tested, and left the factory in a condition in which it is safe to operate. Relevant regulations
and European standards have been observed.
• Observe the technical data on the nameplate!
• The specialists must ensure that the measuring device has been wired correctly in accordance
with the wiring diagrams. The measuring device must be grounded if special protective
measures have not been taken, e.g. galvanically isolated power supply, SELV or PELV! (SELV
= Safe Extra Low Voltage; PELV = Protective Extra Low Voltage)
•
W
ith regard to special fluids, including fluids used for cleaning, Endress+Hauser will be happy
to assist in clarifying the corrosion-resistant properties of wetted materials. However, minor
changes in temperature, concentration or in the degree of contamination in the process may
result in variations in corrosion resistance. For this reason, Endress+Hauser does not accept
any responsibility with regard to the corrosion resistance of wetted materials in a specific
application. The user is responsible for the choice of suitable wetted materials in the process.