Endress+Hauser HART Proline t-mass I 300, Руководство по эксплуатации

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Proline t-mass I 300 HART Installation
Hauser 27
NOTICE
Danger of overheating when heating
‣
Ensure that the temperature at the lower end of the transmitter housing does not
exceed 80 °C (176 °F).
‣
Ensure that sufficient convection takes place at the transmitter neck.
‣
When using in potentially explosive atmospheres, observe the information in the
device-specific Ex documentation. For detailed information on the temperature tables,
see the separate document entitled "Safety Instructions" (XA) for the device.
‣
Ensure that a sufficiently large area of the transmitter neck remains exposed. The
uncovered part serves as a radiator and protects the electronics from overheating and
excessive cooling.
Heating options
If a fluid requires that no heat loss should occur at the sensor, users can avail of the
following heating options:
• Electrical heating, e.g. with electric band heaters
• Via pipes carrying hot water or steam
Vibrations
NOTICE
Strong vibrations can damage the measuring device.
Can result in damage to the measuring device or the fastening units.
‣
Pay attention to information on the vibration and shock resistance →  178
5.1.3 Special mounting instructions
Zero point adjustment
All measuring devices are calibrated in accordance with state-of-the-art technology.
Calibration takes place under reference conditions . Therefore, a zero point adjustment in
the field is generally not required.
Experience shows that zero point adjustment is advisable only in special cases:
• If strict measuring accuracy requirements apply.
• Under extreme process or operating conditions (e.g. very high process temperatures or
light gases (helium, hydrogen)).
Weather protection cover
146 (5.75)
48 (1.9)
12 (0.47)
280 (11.0) 255 (10.0)
134 (5.3) 30 (1.18)
A0029553
 15 Engineering unit mm (in)