Additional Measures For Devices In Hazardous Areas; Ex Px Safety Equipment - Siemens 7MB2531 Operating Instructions Manual

Commissioning

5.3 Additional measures for devices in hazardous areas

OXYMAT 6F
CALOMAT 6F
CALOMAT 62F
ULTRAMAT 6F
*) The test values have been defined under the assumption that the maximum volume between the
shutoff units (valves) and the containment system is 10 ml. This corresponds to a pipe with an inside
diameter of 4 mm and a length of approx. 80 cm.
5.3 Additional measures for devices in hazardous areas
The analyzers may only be used in hazardous areas if all required gas inlet and outlet lines have
been connected prior to startup and tested for leaks and tightness with 1.5 times the respective
maximum permissible operating pressure.
The operator is responsible for the required gas inlet and outlet lines. These must also
correspond to the requirements for "Pressurized enclosure" explosion protection type and must
be tested separately in accordance with EN 60079-2.
5.3.1

Ex px safety equipment

Prerequisite
• You operate the analyzer in one of the following Ex protection types:
– Pressurized enclosure with leakage compensation for Zone 1 in accordance with
– Pressurized enclosure with continuous purging for Zone 1 in accordance with certificate
• You have connected the analyzer to the Ex px safety equipment according to the connection
diagrams in section Connection diagrams (Page 37).
Prior to startup, you must still:
• Check the supply voltage
• Close all unused cable glands with the supplied plugs.
• Carefully screw down the used cable glands.
• Close the doors. You must tighten the screws evenly until the door frame touches the
enclosure surface.
48
Test pressure 200 kPa (2.0 bar)
(rel.)
Test pressure 50 kPa (0.5 bar)
(rel.)
Test pressure 10 kPa (0.1 bar)
(rel.)
Test pressure 50 kPa (0.5 bar)
(rel.)
certificate PTB 00 ATEX 2022 X
TÜV 01 ATEX 1708 X
Compact Operating Instructions in accordance with EN 61010-1 and EN 60079-0
Test value *) Δp = 3 hPa (mbar)
Test value *) Δp = 6 hPa (mbar)
Test value *) Δp = 9.5 hPa (mbar)
Test value *) Δp = 2 hPa (mbar)
Compact Operating Instructions, 09/2018, A5E45779389002-01