Endress+Hauser Proline Promass Q 500, Руководство по эксплуатации

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Technical data Proline Promass Q 500 PROFIBUS PA
260 Hauser
testing. The corresponding type test declaration can be ordered with the device (order code
for "Additional Approval", option LN "Type test containment").
DN Secondary containment
pressure rating
(designed with a safety factor
≥ 4)
Secondary containment burst pressure
[mm] [in] [bar] [psi] [bar] [psi]
25 1 40 580 290 4 205
50 2 40 580 160 2 320
80 3 25 362 150 2 175
100 4 25 362 120 1 740
If a measuring tube fails (e.g. due to process characteristics like corrosive or abrasive
fluids), the fluid will be contained by the secondary containment.
If there is a need to drain the leaking medium into a discharge device, the sensor should be
fitted with a rupture disk. Connect the discharge to the additional threaded connection .
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 secondary containment can be filled
immediately with a dry, inert gas. Use only low pressure to purge. Maximum pressure:
5 bar (72.5 psi).
In case of a tube failure, the pressure level inside the secondary containment will rise
according to the operating process pressure. If the user judges that the secondary
containment pressure rating/burst pressure does not provide an adequate safety margin,
the device can be fitted with a rupture disk. This will prevent extensive pressure buildup
inside the secondary containment and is strongly recommended in high pressure gas
applications, especially where the process pressure is higher than the secondary
containment burst pressure.
For information on the dimensions: see the "Mechanical construction" section of the
"Technical Information" document
Rupture disk To increase the level of safety, a device version with a rupture disk with a trigger pressure
of … can be used (order code for "Sensor option", option CA "rupture disk").
Special mounting instructions: →  25
For information on the dimensions: see the "Mechanical construction" section
Flow limit 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 →  245
• The minimum recommended full scale value is approx. 1/20 of the maximum full scale
value
• In most applications, 20 to 50 % of the maximum full scale value can be considered ideal
• A low full scale value must be selected for abrasive media (such as liquids with entrained
solids): flow velocity < 1 m/s (< 3 ft/s).
Pressure loss To calculate the pressure loss, use the Applicator sizing tool →  242