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XA000146D
Safety instructions:
General
Safety instructions:
Mounting
Safety instructions:
Installation
16
• Compliance with national regulations relating to the installation, connection to the electricity supply,
commissioning and maintenance of devices in potentially explosive atmospheres is mandatory, if such
regulations exist (e.g. EN/IEC 60079-14).
• Installation, connection to the electricity supply, commissioning and maintenance of the devices must be
carried out by qualified specialists trained to work on Ex-rated devices.
• Compliance with all of the technical data of the device (see nameplate) is mandatory.
• Only open the device when it is de-energized (and after a delay of at least 10 minutes following shutdown
of the power supply) or in an area that does not have a potentially explosive atmosphere.
• It is not permissible to connect the service adapter whilst the atmosphere is considered to be explosive.
• Opening the transmitter housing is only permitted for a brief time. During this time, ensure that no dust or
moisture enters the housing.
• To guarantee resistance to dust, the transmitter housing and the cable entries must be tightly sealed.
• Use of the devices is restricted to mediums against which the process-wetted materials are adequately
resistant.
• The suitability of the device in the event of simultaneous occurrence of gas-air and dust-air mixtures requires
an additional assessment.
• The device must be integrated into the potential equalization system.
Turning the transmitter housing
The transmitter housing can be rotated counterclockwise continuously up to 360°.
1.
Loosen the Allen setscrew (1) partially, but do not unscrew it all the way.
2.
Rotate the transmitter housing into the desired position.
3.
Tighten the Allen setscrew (1).
1
Fig. 1:
Turning the transmitter housing
• For terminals No. 22 to No. 27 of the transmitter, only devices with ratings U
allowed to be connected.
• The measuring device must only be used in the permitted temperature class.
The values of the individual temperature classes can be found in the temperature tables: ä 18.
For 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 safe distance of 75 °C to the smolder temperature
of a dust layer of 5 mm.
Example: Operation in temperature class T4 (135 °C) is, therefore, suitable for dust with an ignition
temperature of 202.5 °C (1.5 · 135 °C or 135 °C = 2/3 of 202.5 °C) and a smolder temperature of 210 °C
(135 °C + 75 °C).
• The following applies when connecting the electronics housing in Ex d:
Only separately certified cable and pipe entries (Ex d IIC) must be used, which are suitable for an operating
temperature of up to 80 °C and for an ingress protection of IP 67. When using pipe entries, the associated
sealing equipment must be fitted directly at the housing.
Cubemass
A0013094
253 V and I
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