Purging unit FM (Class I Div 2) Siemens

Область применения



The Ex purging unit MiniPurge FM is used to monitor the pressure during continuous purging of an analyzer with purging or inert gas. If the pressure falls below the set value, an optical display is triggered and the relay is activated. This monitoring unit is driven by the purging gas pressure and therefore does not require an additional power supply.

Чертеж



MiniPurge, dimensions in mm

Схема подключения



MiniPurge, purging unit, Class I, Div 2, gas connection diagram

Технические данные


  

Classification

Class I Division 2

Enclosure dimensions (in mm)

444 x 438 x 275

Enclosure volume (I)

Approx. 50 l

Enclosure pressure (normal)

1 hPa

FM certificate

Certificate of compliance 1X8A4.AE / 0B3A3.AE

Reaction upon failure of pressure

Opening of switching contact, and alarm via signal indicator (red display)

System type

MiniPurge complete system

Operating mode

Continuous purging

Type of enclosure

Reinforced polycarbonate

Enclosure surface

RAL 7035 gray with transparent cover

Pressure supply

Dry, oil-free air or inert gas with regulated pressure of approx. 2000 hPa (30 psi) at inlet of MiniPurge

Supply connections

Pressure via ¼ BSPP connection, pressure hose at least ½" or 12 mm

Display (signal indicator)

Pneumatically driven color signal: green/red

Switching contact

Via SPCO switch approved for Class 1 Division 2

Settings

Lower response limit 0.5 hPa set relative to purging gas flow of 1 … 2 l/min

Prepurging time

Is defined by operator, and controlled manually

Enclosure pressure limitation

By means of stainless steel with integrated flame arrestor; opens at 10 hPa ± 10%