Endress+Hauser Proline Promass O 300, Техническая информация

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Proline Promass O 300
54 Hauser
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 →  62.
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).
Sensor housing nominal pressure rating and burst pressure
The following sensor housing nominal pressure ratings/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 nominal pressure is determined by the
purge system itself or by the device, depending on which component has the lower nominal 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 for the maximum nominal pressure .
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").
Pressure rating according to ASME BPVC.
DN Sensor housing nominal
pressure
(designed with a safety factor
≥ 4)
Sensor housing burst pressure
[mm] [in] [bar] [psi] [bar] [psi]
80 3 25 362 95 1 378
100 4 16 232 85 1 232
150 6 16 232 80 1 160
250 10 6 87 70 1 015
For information on the dimensions: see the "Mechanical construction" section→  57
Rupture disk 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 CA "rupture disk").
Information on the dimensions of the rupture disk: →  62
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 →  10
• 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).
• For gas measurement the following rules apply:
– The flow velocity in the measuring tubes should not exceed half the sound velocity (0.5 Mach).
– The maximum mass flow depends on the density of the gas: formula →  10
To calculate the flow limit, use the Applicator sizing tool →  91
Pressure loss
To calculate the pressure loss, use the Applicator sizing tool →  91