Proline Promass E 500 PROFIBUS PA Installation
Endress+Hauser 27
Hygienic compatibility
When installing in hygienic applications, please refer to the information in the
"Certificates and approvals/hygienic compatibility" section → 288
Rupture disk
Process-related information: → 279.
L
WARNING
Danger from medium escaping!
Medium escaping under pressure can cause injury or material damage.
‣
Take precautions to prevent danger to persons and damage if the rupture disk is
actuated.
‣
Observe the information on the rupture disk sticker.
‣
Make sure that the function and operation of the rupture disk is not impeded through
the installation of the device.
‣
Do not use a heating jacket.
‣
Do not remove or damage the rupture disk.
‣
After the rupture disk is actuated, do not operate the measuring device any more.
The position of the rupture disk is indicated on a sticker applied over it. If the rupture disk
is triggered, the sticker is destroyed. The disk can therefore be visually monitored.
RUPTURE DISK
i
1
DN 8 ( ")... ( ")!⁄# 50 2 DN ( ")80 3
A0029956
1 Rupture disk label
Zero verification and zero adjustment
All measuring instruments are calibrated in accordance with state-of-the-art technology.
Calibration takes place under reference conditions → 273. 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
To Next Page
Loading...
