ACS Precont S, Техническое руководство

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Precont S
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Safety notes
Each person that is engaged with inauguration and operation of this device, must have read and
understood this technical manual and especially the safety notes.
Installation, electrical connection, inauguration and operation of the device must be made by a qualified
employee according to the informations in this technical manual and the relevant standards and rules.
The device may only be used within the permitted operation limits that are listed in this technical manual.
Every use besides these limits as agreed can lead to serious dangers.
The materials of the device must be chosen resp. checked for suitability to the respective application
requirements (contacting substances, process temperature). An unsuitable material can lead to damage,
abnormal behavior or destruction of the device and to the resulting dangers.
The device may not used as sole device for prevention of dangerous conditions in machines and plants.
This device meets article 3 (3) of the EC directive 97/23/EC (pressure equipment device directive) and is
designed and produced in good engineer practice.
The device meets the legal requirements of all relevant EC directives.
Safety notes for electrical operating supplies
for explosive hazardous areas
If a device is installed and operated in explosive hazardous areas, the general Ex construction standards
(EN/IEC 60079-14, VDE 0165), this safety notes and the enclosed EC conformity certificate incl. supplements
must be observed.
The installation of explosive hazardous systems must be carried out principally by specialist staff.
The device meets the classification
T
a Medium
T
a Housing
II 1/2 G Ex ia IIC T4 Ga/Gb -20... +60 °C -20…+85 °C
II 1/2 D Ex ia IIIC T60°C / T102°C (T57°C) Da/Db -20... +60 °C -20…+85 °C (+40 °C)
II 2 G Ex ib IIC T4 Gb -20…+85 °C -20…+85 °C
II 2 D Ex ib IIIC T102°C Db -20…+85 °C -20…+85 °C
II 2 G Ex ib IIC T4 Gb -20…+125 °C -20…+50 °C
II 2 D Ex ib IIIC T125°C Db -20…+125 °C -20…+50 °C
The highest surface temperature is determined inside the housing at complete fill up, that means thermal
isolation. The power at the sensor is negligible.
The devices are conceived for measuring of pressures in explosive hazardous areas.
The measured medium may also be combustible gases, vapors, liquids and dusts.
The permitted operating temperatures and pressures are type and variant dependent and can be found in this
technical manual.
For applications, which require devices of category 1/2 or category 1, the process pressure and temperature
range of the medium has to be between 0,8 bar and 1,1 bar and between -20 °C and 60 °C.
The permissible maximum values for U
i
, I
i
and P
i
are equal for variants A/B/C/D/E/F/G/H. To this there must be
paid especially attention in the case of combining more intrinsically safe circuits at the variants with voltage
output 0...10V (variants E/F/G/H) and at the variants with PNP switching outputs (variants A/E). The rules for
combination of intrinsically safe circuits must be applied.
The PA terminal inside the connection housing resp. the process connection must be connected to the potential
compensation of the explosive hazardous area.
At variants of the devices with chargeable plastic parts (e.g. cable resp. connection housing), a warning
marking points out to the safety measures, that must be applied because of the electrostatic charging in
operation and especially in the case of maintenance activities.
avoid friction - no dry cleaning - no assembling in pneumatic conveying stream
NAMUR
0158