Special Instructions; Installation Instructions - Endress+Hauser Proline Promag 53 P Ex-Dokumentation Zu Den Betriebsanleitungen

Proline Promag 53
Endress+Hauser
Notified body
The Promag measuring system was tested for approval by the following named entity:
DMT: Deutsche Montan Technologie GmbH
Fachstelle für Sicherheit elektrischer Betriebsmittel
Bergbau-Versuchsstrecke

Special instructions

1. The flowmeter must be integrated into the potential equalisation system.
Potential must be equalized along the intrinsically safe sensor circuits.
2. Devices connected to terminals Nos. 20 to 27 of the Promag 53 transmitter must be
rated for U = 260 V and I
m
(Does not apply to Promag 53***-***********S/T with intrinsically safe output circuits).
3. The specified temperature class in conjunction with the ambient temperature and the
medium temperature must be in compliance with the tables on Page 4.
4. The following rules apply for connecting the electronics housing of the EEx d rated
version:
Use only specially approved cables and cable entries (EEx d IIC), suitable for oper-
ating temperatures up to 80 °C. If conduit entries are used, the seals must be posi-
tioned immediately adjacent to the housing.
5. The following rules apply for connecting the electronics housing of the EEx e rated
version:
Use only specially approved cables and cable entries (EEx e), suitable for operating
temperatures up to 80 °C and having an IP 67 protection rating.
6. Use of the devices is restricted to mediums against which the process-wetted mate-
rials are adequately resistant.
7. The service adapter must not be connected in explosive atmospheres.
8. Seal cable entries tight.

Installation instructions

• If the category "ia" intrinsically safe circuits of the flowmeters are connected to certi-
fied intrinsically safe category "ib" circuits with explosion group IIC resp. IIB ratings,
the ignition protection rating changes to EEx ib IIC resp. EEx ib IIB, as applicable.
Intrinsically safe category "ib" circuits are suitable for use in environments that require
category 2 equipment.
• Zone 21:
The surface temperature of the measuring device must not exceed 2/3 of the ignition
temperature of a dust cloud. The maximum surface temperature must maintain a
safety distance of 75K for the glow temperature of a dust layer of 5 mm.
Example: a configuration of temperature class T4 (135 °C) is thus suitable for dust with
an ignition temperature of 202.5 °C (1.5 x 135 °C) and a glow temperature of 210 °C
(135 °C + 75 °C).
• Active intrinsically safe communication circuits (I/O-option S, terminals 26/27); if they
are led into areas, which require electrical equipment of category 1D or 2D, the con-
nected equipment has to be approved and certified accordingly.
= 500 mA.
m
7