Endress+Hauser prowirl 77, Руководство по эксплуатации

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1 Safety Instructions
1.1 Correct usage
•
Prowirl 77 is only to be used for measuring the volumentric flowrate of saturated
steam, superheated steam, gases and liquids. If the process pressure and
temperature are constant, then Prowirl 77 can also indicate the flowrate in units of
mass, energy or corrected volume.
•
The manufacturer assumes no liability for damage caused by incorrect use of the
instrument.
•
Instruments which are ordered with hazardous area approvals are supplied with a
separate “Ex documentation”, which is an integral part of this Operating Manual.
The instructions and connected loads provided in this supplement must be closely
observed! An appropriate pictogram is shown on the front page of the
Ex documentation according to the approval given and the test centre.
1.2 Dangers and Notes
All instruments are designed to meet state-of-the-art safety requirements, have been
tested, and have left the works in an operationally perfectly safe condition.
The devices were developed according to EN 61010 “Protection Measures for
Electrical Equipment for Measurement, Control, Regulation and Laboratory Proce-
dures”. A hazardous situation may occur if the flowmeter is not used for the purpose it
was designed for or is used incorrectly. Please carefully note the information
provided in this Operating Manual indicated by the pictograms:
Warning!
A “warning” indicates actions or procedures which, if not performed correctly, may
lead to personal injury or a safety hazard.
Please strictly observe the instructions supplied and proceed carefully.
Caution!
A “caution” indicates actions or procedures which, if not performed correctly, may
lead to faulty operation or destruction of the instrument. Please strictly observe the
respective instructions.
Note!
A “note” indicates actions or procedures which, if not performed correctly, may indi-
rectly affect operation or lead to an unexpected instrument response.
1.3 Operational safety
•
The Prowirl 77 measuring system fulfills the general safety regulations according to
EN 61010 and the interference immunity regulations (EMC) according to European
standard EN 50081 Part 1 and 2 / EN 50082 Part 1 and 2 as well as NAMUR recom-
mendations.
•
Housing ingress protection IP 67 according to EN 60529.
•
A comprehensive self-monitoring feature of the measuring system ensures high
operational safety.
•
After loss of power supply (which is provided by the field bus), the configuration
data of the measuring system remain in the EEPROM (without batteries).
The totalizer remains on the value last shown.
Warning!
Caution!
Note!
Prowirl 77 PROFIBUS-PA 1 Safety Instructions
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