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2. Safety
2.3 Additional safety instructions for instruments per ATEX
WARNING!
Non-observance of these instructions and their contents may
result in the loss of explosion protection.
EC type-examination certificate
Directive: 94/9/EC
Electrical, mechanical and thermal parameters for connection to an intrinsi-
cally safe circuit with the following maximum values:
Voltage U
: DC 9.2 V
i
Strength of current I
Max. power
for temperature class T4: 0.133 W
■
for temperature class T5: 0.133 W
■
for temperature class T6: 0.066 W
■
Effective internal inductance L
Effective internal capacitance C
Specific conditions for safe use.
The indicator is suitable for use in the following ambient temperature ranges:
Temperature class T4: -20 ... +70 °C
■
Temperature class T5 and T6: -20 ... +60 °C
■
The mounting of the indicator to intrinsically safe electrical equipment must
be tested and certified; after mounting, an ingress protection of IP 20 in
accordance with EN 60529 must be ensured for the entire equipment.
WIKA operating instructions unitrans
: 115 mA
i
: Negligible
i
: 2 µF
i
indicator module model A-IUR-1
GB
7
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