Endress+Hauser Proline Promass A 100 PROFINET Operating Instructions Manual page 23

Proline Promass A 100 PROFINET
Endress+Hauser
WARNING
L
Danger from medium escaping!
Medium escaping under pressure can cause injury or material damage.
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Take precautions to prevent danger to persons and damage if the rupture disk is
actuated.
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Observe the information on the rupture disk sticker.
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Make sure that the function and operation of the rupture disk is not impeded through
the installation of the device.
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Do not use a heating jacket.
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Do not remove or damage the rupture disk.
The position of the rupture disk is indicated by a sticker affixed beside it.
The transportation guard must be removed.
The existing connecting nozzles are not intended for the purpose of rinsing or pressure
monitoring, but instead serve as the mounting location for the rupture disk.
In the event of a failure of the rupture disk, a drain device can be screwed onto the internal
thread of the rupture disk in order to drain off any escaping medium.
1 Rupture disk label
2 Rupture disk with 1/2" NPT internal thread and 1" width across flats
3 Transportation guard
For information on the dimensions, see the "Technical Information" document,
"Mechanical construction" section (accessories).
Zero verification and zero adjustment
All measuring instruments are calibrated in accordance with state-of-the-art technology.
Calibration takes place under reference conditions →  137. Therefore, a zero adjustment
in the field is generally not required.
Experience shows that zero adjustment is advisable only in special cases:
• To achieve maximum measurement accuracy even with low flow rates.
• Under extreme process or operating conditions (e.g. very high process temperatures or
very high-viscosity fluids).
• For gas applications with low pressure
To achieve the highest possible measurement accuracy at low flow rates, the
installation must protect the sensor from mechanical stresses during operation.
To get a representative zero point, ensure that:
• any flow in the device is prevented during the adjustment
• the process conditions (e.g. pressure, temperature) are stable and representative
i
RUPTURE DISK
1
Installation
2 3
A0030346
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