Endress+Hauser Proline Promass A 100 PROFINET Operating Instructions Manual page 143

Proline Promass A 100 PROFINET
Rupture disk
Flow limit
Endress+Hauser
If the sensor is to be purged with gas (gas detection), it should be equipped with purge
connections.
Do not open the purge connections unless the containment can be filled immediately
with a dry, inert gas. Use only low pressure to purge.
Maximum pressure: 5 bar (72.5 psi)
Burst pressure of the sensor housing
The following sensor housing burst pressures are only valid for standard devices and/or
devices equipped with closed purge connections (not opened/as delivered).
If a device fitted with purge connections (order code for "Sensor option", option CH "Purge
connection") is connected to the purge system, the maximum pressure is determined by the
purge system itself or by the device, depending on which component has the lower
pressure classification.
If the device is fitted with a rupture disk (order code for "Sensor option", option CA "Rupture
disk"), the rupture disk trigger pressure is decisive .
The sensor housing burst pressure refers to a typical internal pressure which is reached
prior to mechanical failure of the sensor housing and which was determined during type
testing. The corresponding type test declaration can be ordered with the device (order code
for "Additional approval", option LN "Sensor housing burst pressure, type test").
DN
[mm]
1
2
4
For information on the dimensions: see the "Mechanical construction" section of the
"Technical Information" document
To increase the level of safety, a device version with a rupture disk with a trigger pressure
of 10 to 15 bar (145 to 217.5 psi)can be used (order code for "Sensor option", option
"rupture disk").
The use of rupture disks cannot be combined with the separately available heating jacket.
For information on the dimensions of the rupture disk: see the "Mechanical
construction" section of the "Technical Information" document
Select the nominal diameter by optimizing between the required flow range and
permissible pressure loss.
For an overview of the full scale values for the measuring range, see the "Measuring
range" section →  130
Sensor housing burst pressure
[in] [bar]
¹⁄₂₄ 175
¹⁄₁₂ 155
¹⁄₈ 130
Technical data
[psi]
2 538
2 248
1 885
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